Result of the cross between a White Cornish rooster and a White Plymouth Rock hen.
Ornamental Birds
[{'start': '1.910', 'end': '6.879', 'text': '[Music]'}, {'start': '5.120', 'end': '8.559', 'text': 'Have you ever wondered where those super'}, {'start': '6.879', 'end': '10.639', 'text': 'fast growing broiler chickens that'}, {'start': '8.559', 'end': '13.320', 'text': 'dominate the markets come from? Like the'}, {'start': '10.639', 'end': '15.920', 'text': 'famous Cobb 500 or the efficient Ross'}, {'start': '13.320', 'end': '17.920', 'text': '7008? Get ready because the answer will'}, {'start': '15.920', 'end': '20.640', 'text': 'surprise you and today we are going to'}, {'start': '17.920', 'end': '22.640', 'text': 'unveil the secret behind their origin.'}, {'start': '20.640', 'end': '24.400', 'text': 'In this video, I will guide you through'}, {'start': '22.640', 'end': '26.039', 'text': 'the fundamental crosses you can make at'}, {'start': '24.400', 'end': '28.960', 'text': 'home to produce your own broiler'}, {'start': '26.039', 'end': '31.199', 'text': 'chickens. Behind poultry genetics giants'}, {'start': '28.960', 'end': '32.960', 'text': 'like Cobb and Ross, the two leading'}, {'start': '31.199', 'end': '35.520', 'text': 'companies worldwide in the development'}, {'start': '32.960', 'end': '38.640', 'text': 'of hybrid broiler lines, lies a key'}, {'start': '35.520', 'end': '41.360', 'text': 'concept, the Cornish cross. But what'}, {'start': '38.640', 'end': '43.360', 'text': 'exactly is it? Generally speaking, the'}, {'start': '41.360', 'end': '45.360', 'text': 'Cornish cross represents the type of'}, {'start': '43.360', 'end': '47.200', 'text': 'strategic cross that they have perfected'}, {'start': '45.360', 'end': '49.440', 'text': 'to achieve those impressive results in'}, {'start': '47.200', 'end': '51.680', 'text': 'chicken meat production. Traditionally,'}, {'start': '49.440', 'end': '53.960', 'text': 'the basis of this success lies in the'}, {'start': '51.680', 'end': '56.239', 'text': 'union of two breeds with complimentary'}, {'start': '53.960', 'end': '58.559', 'text': 'characteristics. And today we will focus'}, {'start': '56.239', 'end': '60.239', 'text': 'on the heart of this process, the'}, {'start': '58.559', 'end': '62.000', 'text': 'fascinating cross between a white'}, {'start': '60.239', 'end': '62.920', 'text': 'Cornish rooster and a white Plymouth'}, {'start': '62.000', 'end': '65.760', 'text': 'Rock'}, {'start': '62.920', 'end': '67.840', 'text': 'hen. This cross, which we will explore'}, {'start': '65.760', 'end': '69.680', 'text': 'in depth in this video, is the pillar'}, {'start': '67.840', 'end': '72.000', 'text': 'upon which the foundations were built to'}, {'start': '69.680', 'end': '74.880', 'text': 'obtain chickens with remarkably fast'}, {'start': '72.000', 'end': '77.439', 'text': 'growth and exceptional musculature. Over'}, {'start': '74.880', 'end': '79.680', 'text': 'time, genetics titans such as Cobb'}, {'start': '77.439', 'end': '81.759', 'text': 'Vantress and Avagen, the mastermind'}, {'start': '79.680', 'end': '83.759', 'text': 'behind the Ross brand, have taken this'}, {'start': '81.759', 'end': '85.759', 'text': 'fundamental principle and elevated it to'}, {'start': '83.759', 'end': '88.240', 'text': 'new heights through decades of rigorous'}, {'start': '85.759', 'end': '90.640', 'text': 'genetic selection. Companies like Cobb'}, {'start': '88.240', 'end': '93.680', 'text': 'Vantress have developed iconic lines'}, {'start': '90.640', 'end': '94.880', 'text': 'such as the Cobb 500 and the Cobb 700,'}, {'start': '93.680', 'end': '96.720', 'text': 'which are nothing more than'}, {'start': '94.880', 'end': '98.880', 'text': 'ultraimtimized versions of the Cornish'}, {'start': '96.720', 'end': '101.280', 'text': 'Cross concept, fine-tuned for even'}, {'start': '98.880', 'end': '104.240', 'text': 'faster growth, superior feed efficiency,'}, {'start': '101.280', 'end': '107.200', 'text': 'and unsurpassed meat yield. Similarly,'}, {'start': '104.240', 'end': '110.880', 'text': 'Avagen offers us the renowned Ross lines'}, {'start': '107.200', 'end': '112.799', 'text': 'such as the Ross 3008 and the Ross 7008.'}, {'start': '110.880', 'end': '114.720', 'text': 'Like their Cobb counterparts, these'}, {'start': '112.799', 'end': '116.799', 'text': 'hybrid chickens share that genetic'}, {'start': '114.720', 'end': '118.719', 'text': 'heritage of the Cornish cross, but with'}, {'start': '116.799', 'end': '121.200', 'text': 'the innovations and patented genetic'}, {'start': '118.719', 'end': '123.040', 'text': 'improvements by Adogen. It is important'}, {'start': '121.200', 'end': '124.799', 'text': 'to understand that although both'}, {'start': '123.040', 'end': '126.960', 'text': 'lineages descend from this type of'}, {'start': '124.799', 'end': '128.879', 'text': 'cross, the Cobb and Ross lines present'}, {'start': '126.960', 'end': '130.640', 'text': 'subtle but significant differences in'}, {'start': '128.879', 'end': '132.160', 'text': 'aspects such as the growth curve at'}, {'start': '130.640', 'end': '134.080', 'text': 'their different stages of development,'}, {'start': '132.160', 'end': '136.160', 'text': 'the final carcass confirmation with'}, {'start': '134.080', 'end': '137.760', 'text': 'variations in breast size, for example,'}, {'start': '136.160', 'end': '139.920', 'text': 'the efficiency with which they convert'}, {'start': '137.760', 'end': '142.400', 'text': 'feed into meat, and their adaptability'}, {'start': '139.920', 'end': '144.640', 'text': 'to various farm management conditions.'}, {'start': '142.400', 'end': '147.200', 'text': 'As producers, the choice between these'}, {'start': '144.640', 'end': '149.440', 'text': 'lines becomes a strategic decision based'}, {'start': '147.200', 'end': '151.200', 'text': 'on our specific needs, our production'}, {'start': '149.440', 'end': '153.360', 'text': 'objectives, and the particular'}, {'start': '151.200', 'end': '155.120', 'text': 'conditions of our breeding environment.'}, {'start': '153.360', 'end': '157.200', 'text': 'So, if you are interested in discovering'}, {'start': '155.120', 'end': '158.480', 'text': 'the secrets behind broiler production,'}, {'start': '157.200', 'end': '160.800', 'text': 'and how you can start your own'}, {'start': '158.480', 'end': '162.640', 'text': 'experience, get ready to dive into the'}, {'start': '160.800', 'end': '164.800', 'text': 'fascinating world of the cross between'}, {'start': '162.640', 'end': '167.120', 'text': 'the white Cornish rooster and the white'}, {'start': '164.800', 'end': '169.519', 'text': 'Plymouth Rock Hen, the basis of much'}, {'start': '167.120', 'end': '171.840', 'text': 'more than you imagine. The Cornish cross'}, {'start': '169.519', 'end': '173.760', 'text': "didn't just pop up overnight. Its"}, {'start': '171.840', 'end': '176.000', 'text': 'history goes back to the early 20th'}, {'start': '173.760', 'end': '178.400', 'text': 'century when an ideal chicken for meat'}, {'start': '176.000', 'end': '181.120', 'text': 'production was being sought. The basis'}, {'start': '178.400', 'end': '183.840', 'text': 'of this hybrid lies in two main breeds.'}, {'start': '181.120', 'end': '185.760', 'text': 'The Cornish or Indian game originally'}, {'start': '183.840', 'end': '188.400', 'text': 'from England was initially developed as'}, {'start': '185.760', 'end': '190.640', 'text': 'a fighting bird. However, its breeders'}, {'start': '188.400', 'end': '193.280', 'text': 'realized its exceptionally muscular and'}, {'start': '190.640', 'end': '195.519', 'text': 'broad body confirmation, especially in'}, {'start': '193.280', 'end': '197.360', 'text': "the breast. Although they weren't good"}, {'start': '195.519', 'end': '199.200', 'text': 'layers or fast growing in their pure'}, {'start': '197.360', 'end': '201.519', 'text': 'form, their potential to contribute'}, {'start': '199.200', 'end': '203.519', 'text': 'muscle mass was evident. And the white'}, {'start': '201.519', 'end': '205.599', 'text': 'plumth rock this American breed was'}, {'start': '203.519', 'end': '208.120', 'text': 'appreciated for its good growth rate,'}, {'start': '205.599', 'end': '210.879', 'text': 'good overall size, and decent laying'}, {'start': '208.120', 'end': '212.879', 'text': 'abilities. Its white plumage was also an'}, {'start': '210.879', 'end': '215.200', 'text': 'advantage for meat production, as it'}, {'start': '212.879', 'end': '216.720', 'text': 'resulted in a cleaner appearance. The'}, {'start': '215.200', 'end': '218.560', 'text': 'discovery of the potential of their'}, {'start': '216.720', 'end': '220.640', 'text': 'cross occurred by observing that the'}, {'start': '218.560', 'end': '222.560', 'text': "combination of the Cornish's musculature"}, {'start': '220.640', 'end': '224.879', 'text': "with the white Plymouth Rock's growth"}, {'start': '222.560', 'end': '226.799', 'text': 'and size produced offspring with a'}, {'start': '224.879', 'end': '229.280', 'text': 'significantly faster growth rate and'}, {'start': '226.799', 'end': '230.959', 'text': 'excellent feed conversion. This initial'}, {'start': '229.280', 'end': '233.040', 'text': 'hybrid laid the foundation for the'}, {'start': '230.959', 'end': '234.799', 'text': 'modern Cornish cross we know today.'}, {'start': '233.040', 'end': '236.319', 'text': 'Although current commercial lines have'}, {'start': '234.799', 'end': '238.319', 'text': 'been refined through decades of'}, {'start': '236.319', 'end': '240.879', 'text': 'intensive genetic selection by companies'}, {'start': '238.319', 'end': '243.200', 'text': 'such as Cobb and Aviaen. Productive'}, {'start': '240.879', 'end': '245.280', 'text': 'qualities of the modern Cornish cross'}, {'start': '243.200', 'end': '246.799', 'text': "Cobb and Ross. It's crucial to"}, {'start': '245.280', 'end': '248.560', 'text': 'understand that when we talk about the'}, {'start': '246.799', 'end': '250.239', 'text': 'productive qualities, weight gain, and'}, {'start': '248.560', 'end': '252.560', 'text': 'growth, we are mainly referring to'}, {'start': '250.239', 'end': '255.120', 'text': 'modern commercial lines such as the Cobb'}, {'start': '252.560', 'end': '257.199', 'text': '500 and the Ross 7008, which are the'}, {'start': '255.120', 'end': '259.440', 'text': 'pinnacle of optimization of the original'}, {'start': '257.199', 'end': '261.680', 'text': 'Cornish Cross concept. Exceptional'}, {'start': '259.440', 'end': '264.000', 'text': 'weight gain and growth. This is the most'}, {'start': '261.680', 'end': '265.840', 'text': 'distinctive characteristic. Modern'}, {'start': '264.000', 'end': '268.960', 'text': 'Cornish cross are designed to reach'}, {'start': '265.840', 'end': '272.240', 'text': 'market weight, typically between 4.4 and'}, {'start': '268.960', 'end': '275.520', 'text': '6.6 6 lb in a remarkably short period,'}, {'start': '272.240', 'end': '277.440', 'text': 'usually between 6 and 9 weeks. Their'}, {'start': '275.520', 'end': '279.360', 'text': 'growth rate is exponential during this'}, {'start': '277.440', 'end': '281.520', 'text': 'time. Thanks to their genetics and'}, {'start': '279.360', 'end': '284.320', 'text': 'proper management, balanced feed in the'}, {'start': '281.520', 'end': '285.919', 'text': 'early stages. Excellent feed conversion.'}, {'start': '284.320', 'end': '287.680', 'text': 'They are extremely efficient at'}, {'start': '285.919', 'end': '290.080', 'text': 'converting the feed they consume into'}, {'start': '287.680', 'end': '292.160', 'text': 'muscle mass. This means they require'}, {'start': '290.080', 'end': '294.000', 'text': 'less feed per pound of meat produced'}, {'start': '292.160', 'end': '296.080', 'text': 'compared to other less specialized'}, {'start': '294.000', 'end': '298.240', 'text': 'breeds or crosses. Their body'}, {'start': '296.080', 'end': '300.639', 'text': 'confirmation with broad breasts and'}, {'start': '298.240', 'end': '302.479', 'text': 'well-developed thighs results in a high'}, {'start': '300.639', 'end': '305.199', 'text': 'meat yield in relation to their live'}, {'start': '302.479', 'end': '306.960', 'text': 'weight. Egg production in modern Cornish'}, {'start': '305.199', 'end': '309.280', 'text': 'cross is practically nil at the'}, {'start': '306.960', 'end': '311.520', 'text': 'commercial level. Their energy and'}, {'start': '309.280', 'end': '313.600', 'text': 'development are directed almost entirely'}, {'start': '311.520', 'end': '315.520', 'text': 'towards muscle growth. They are not'}, {'start': '313.600', 'end': '318.320', 'text': 'considered laying birds and their life'}, {'start': '315.520', 'end': '319.840', 'text': 'cycle focuses on meat production. Due to'}, {'start': '318.320', 'end': '322.000', 'text': 'their short life cycle for meat'}, {'start': '319.840', 'end': '323.440', 'text': 'production, sexual maturity is not a'}, {'start': '322.000', 'end': '325.440', 'text': 'relevant factor in their commercial'}, {'start': '323.440', 'end': '327.160', 'text': 'management. They are generally'}, {'start': '325.440', 'end': '329.360', 'text': 'slaughtered before reaching sexual'}, {'start': '327.160', 'end': '331.520', 'text': 'maturity. Since they are rarely allowed'}, {'start': '329.360', 'end': '333.520', 'text': 'to live to adulthood, talking about an'}, {'start': '331.520', 'end': '335.600', 'text': 'average adult weight is not a standard'}, {'start': '333.520', 'end': '337.680', 'text': 'metric in commercial production.'}, {'start': '335.600', 'end': '339.680', 'text': 'However, if they were allowed to grow,'}, {'start': '337.680', 'end': '341.680', 'text': 'males would be significantly larger and'}, {'start': '339.680', 'end': '343.440', 'text': 'heavier than females, reflecting the'}, {'start': '341.680', 'end': '345.600', 'text': 'influence of the Cornish breed on their'}, {'start': '343.440', 'end': '348.080', 'text': 'structure. These birds tend to be'}, {'start': '345.600', 'end': '350.080', 'text': 'relatively docile and have low levels of'}, {'start': '348.080', 'end': '352.639', 'text': 'activity, especially as they gain'}, {'start': '350.080', 'end': '354.800', 'text': 'weight. This characteristic also'}, {'start': '352.639', 'end': '357.440', 'text': 'contributes to better feed conversion as'}, {'start': '354.800', 'end': '359.360', 'text': 'they expend less energy on movement. It'}, {'start': '357.440', 'end': '360.960', 'text': 'is important to note that by crossing a'}, {'start': '359.360', 'end': '363.120', 'text': 'white Cornish rooster with a white'}, {'start': '360.960', 'end': '365.280', 'text': 'Plymouth Rock hen at home, you will not'}, {'start': '363.120', 'end': '368.720', 'text': 'obtain a chicken identical to the modern'}, {'start': '365.280', 'end': '370.639', 'text': 'commercial Cornish cross, Cobb or Ross.'}, {'start': '368.720', 'end': '372.639', 'text': 'Commercial lines are the result of many'}, {'start': '370.639', 'end': '374.960', 'text': 'generations of specific genetic'}, {'start': '372.639', 'end': '377.520', 'text': 'selection and controlled crosses by'}, {'start': '374.960', 'end': '379.600', 'text': 'these companies. However, this homemade'}, {'start': '377.520', 'end': '381.440', 'text': 'cross will produce broiler chickens with'}, {'start': '379.600', 'end': '384.319', 'text': 'improved characteristics compared to the'}, {'start': '381.440', 'end': '386.160', 'text': 'purebred parent breeds, showing faster'}, {'start': '384.319', 'end': '388.240', 'text': 'growth and better carcass confirmation'}, {'start': '386.160', 'end': '390.000', 'text': 'than a pure Plymouth Rock, although'}, {'start': '388.240', 'end': '392.560', 'text': 'perhaps not at the same extreme rate as'}, {'start': '390.000', 'end': '394.319', 'text': 'a cob or Ross. Next, we will delve into'}, {'start': '392.560', 'end': '396.160', 'text': 'the specific characteristics of the'}, {'start': '394.319', 'end': '398.479', 'text': 'white Cornish rooster and the white'}, {'start': '396.160', 'end': '400.240', 'text': 'Plymouth Rock hen, understanding what'}, {'start': '398.479', 'end': '402.880', 'text': 'each contributes to the offspring of'}, {'start': '400.240', 'end': '404.639', 'text': 'this homemade cross for meat production.'}, {'start': '402.880', 'end': '407.240', 'text': 'Characteristics of the White Cornish'}, {'start': '404.639', 'end': '409.199', 'text': 'rooster. Robust and muscular body'}, {'start': '407.240', 'end': '411.600', 'text': 'confirmation. This is its most'}, {'start': '409.199', 'end': '413.840', 'text': 'distinctive characteristic. Cornish'}, {'start': '411.600', 'end': '415.680', 'text': 'roosters have a broad and deep body with'}, {'start': '413.840', 'end': '418.720', 'text': 'an exceptionally wide and prominent'}, {'start': '415.680', 'end': '420.800', 'text': 'breast as well as well-developed thighs.'}, {'start': '418.720', 'end': '422.639', 'text': 'This structure is the main contribution'}, {'start': '420.800', 'end': '424.720', 'text': 'to the good carcass confirmation of'}, {'start': '422.639', 'end': '427.280', 'text': 'their offspring. Compared to modern'}, {'start': '424.720', 'end': '429.759', 'text': 'hybrids, the growth of pure Cornish is'}, {'start': '427.280', 'end': '432.479', 'text': 'relatively slow. They do not reach'}, {'start': '429.759', 'end': '434.479', 'text': 'market weight as quickly. Cornish hens'}, {'start': '432.479', 'end': '436.639', 'text': 'and by extension roosters do not'}, {'start': '434.479', 'end': '438.880', 'text': 'directly influence laying, but the breed'}, {'start': '436.639', 'end': '441.440', 'text': 'in general has this characteristic are'}, {'start': '438.880', 'end': '444.479', 'text': 'not known for high egg production. Their'}, {'start': '441.440', 'end': '446.319', 'text': 'genetic focus is on muscle development.'}, {'start': '444.479', 'end': '448.960', 'text': 'Cornish can be temperamental and even'}, {'start': '446.319', 'end': '451.199', 'text': 'aggressive birds, especially the males.'}, {'start': '448.960', 'end': '454.479', 'text': 'An adult white Cornish rooster can weigh'}, {'start': '451.199', 'end': '456.639', 'text': 'between 8.8 and 11 lb. In the white'}, {'start': '454.479', 'end': '458.800', 'text': 'variety, their plumage is completely'}, {'start': '456.639', 'end': '461.120', 'text': 'white without spots or feathers of'}, {'start': '458.800', 'end': '463.199', 'text': 'another color. Characteristics of the'}, {'start': '461.120', 'end': '465.120', 'text': 'white Plymouth rock hen. They are'}, {'start': '463.199', 'end': '467.680', 'text': 'good-sized birds, although not as'}, {'start': '465.120', 'end': '470.080', 'text': 'muscular as the Cornish. They have a'}, {'start': '467.680', 'end': '472.479', 'text': 'strong constitution and are adaptable to'}, {'start': '470.080', 'end': '474.879', 'text': 'many adverse conditions. Growth is'}, {'start': '472.479', 'end': '476.879', 'text': 'faster than the Cornish. Plymouth Rock'}, {'start': '474.879', 'end': '479.039', 'text': 'chickens grow at a faster rate than pure'}, {'start': '476.879', 'end': '481.599', 'text': 'Cornish, although not as fast as'}, {'start': '479.039', 'end': '483.759', 'text': 'commercial hybrids. Plymouth Rock hens'}, {'start': '481.599', 'end': '486.080', 'text': 'are known for being good layers of large'}, {'start': '483.759', 'end': '487.840', 'text': 'brown eggs. This is a valuable'}, {'start': '486.080', 'end': '490.000', 'text': 'characteristic that they transmit to'}, {'start': '487.840', 'end': '492.280', 'text': 'their offspring. Although in the broiler'}, {'start': '490.000', 'end': '494.560', 'text': 'cross, egg production is not the main'}, {'start': '492.280', 'end': '496.560', 'text': 'objective. Generally, this white'}, {'start': '494.560', 'end': '498.560', 'text': 'Plymouth Rock breed has a calm and'}, {'start': '496.560', 'end': '501.120', 'text': 'manageable temperament like the other'}, {'start': '498.560', 'end': '503.039', 'text': 'varieties of Plymouth Rock. An adult'}, {'start': '501.120', 'end': '507.360', 'text': 'white Plymouth Rock hen can weigh'}, {'start': '503.039', 'end': '509.759', 'text': 'between 6.6 and 8.8 lb. Their plumage,'}, {'start': '507.360', 'end': '511.759', 'text': 'like the Cornish, is completely white.'}, {'start': '509.759', 'end': '513.839', 'text': 'Why the cross in this order? White'}, {'start': '511.759', 'end': '516.159', 'text': 'Cornish rooster with white Plymouth Rock'}, {'start': '513.839', 'end': '518.000', 'text': 'hen. Making the cross with a white'}, {'start': '516.159', 'end': '520.320', 'text': 'Cornish rooster as the father and a'}, {'start': '518.000', 'end': '522.240', 'text': 'white Plymouth rock hen as the mother is'}, {'start': '520.320', 'end': '524.120', 'text': 'the most common and recommended strategy'}, {'start': '522.240', 'end': '526.560', 'text': 'for several genetic and practical'}, {'start': '524.120', 'end': '528.560', 'text': 'reasons. Muscle contribution from the'}, {'start': '526.560', 'end': '530.640', 'text': 'Cornish father. The white Cornish'}, {'start': '528.560', 'end': '533.240', 'text': 'rooster contributes the genetics for'}, {'start': '530.640', 'end': '535.519', 'text': 'superior muscle development and carcass'}, {'start': '533.240', 'end': '538.480', 'text': 'confirmation, broad breast and meaty'}, {'start': '535.519', 'end': '540.399', 'text': 'thighs to the offspring. As the male,'}, {'start': '538.480', 'end': '542.000', 'text': 'his genetic influence on these growth'}, {'start': '540.399', 'end': '544.720', 'text': 'and structure characteristics is'}, {'start': '542.000', 'end': '546.800', 'text': 'dominant in the chicks. fast growth and'}, {'start': '544.720', 'end': '548.959', 'text': 'size contribution from the Plymouth Rock'}, {'start': '546.800', 'end': '551.040', 'text': 'mother. The white Plymouth Rock hen'}, {'start': '548.959', 'end': '553.760', 'text': 'contributes a faster growth rate and'}, {'start': '551.040', 'end': '555.760', 'text': 'good overall size to the chicks. In'}, {'start': '553.760', 'end': '557.760', 'text': 'addition, her more docel temperament'}, {'start': '555.760', 'end': '560.320', 'text': 'tends to positively influence the'}, {'start': '557.760', 'end': '562.320', 'text': 'manageability of the offspring. Plymouth'}, {'start': '560.320', 'end': '564.080', 'text': 'rock hens are usually good mothers and'}, {'start': '562.320', 'end': '566.000', 'text': 'contribute vigor and hardiness to the'}, {'start': '564.080', 'end': '568.560', 'text': 'chicks, improving their survival rate'}, {'start': '566.000', 'end': '570.560', 'text': 'and adaptability. By using a white'}, {'start': '568.560', 'end': '572.320', 'text': 'Cornish and a white Plymouth rock, the'}, {'start': '570.560', 'end': '574.320', 'text': 'probability of obtaining chicks with'}, {'start': '572.320', 'end': '576.160', 'text': 'white plumage is increased, which is'}, {'start': '574.320', 'end': '578.320', 'text': 'preferred for meat production due to the'}, {'start': '576.160', 'end': '580.360', 'text': 'clean appearance of the carcass. What'}, {'start': '578.320', 'end': '582.720', 'text': 'does this specific order contribute'}, {'start': '580.360', 'end': '585.040', 'text': 'genetically? Dominance of confirmation'}, {'start': '582.720', 'end': '586.959', 'text': 'genes. The genes responsible for the'}, {'start': '585.040', 'end': '589.080', 'text': 'pronounced musculature of the Cornish'}, {'start': '586.959', 'end': '591.519', 'text': 'tend to be dominant or'}, {'start': '589.080', 'end': '593.680', 'text': 'semi-dominant. As the father, the white'}, {'start': '591.519', 'end': '595.680', 'text': 'Cornish rooster has a higher probability'}, {'start': '593.680', 'end': '598.080', 'text': 'of transmitting these characteristics to'}, {'start': '595.680', 'end': '600.720', 'text': 'his offspring. The mother on the other'}, {'start': '598.080', 'end': '603.600', 'text': 'hand contributes mitochondrial DNA to'}, {'start': '600.720', 'end': '605.120', 'text': 'the offspring. A robust mother with good'}, {'start': '603.600', 'end': '607.519', 'text': 'general health such as the white'}, {'start': '605.120', 'end': '610.160', 'text': 'Plymouth Rock can positively influence'}, {'start': '607.519', 'end': '611.839', 'text': 'the initial vitality of the chicks. The'}, {'start': '610.160', 'end': '614.000', 'text': 'combination of the genes from both'}, {'start': '611.839', 'end': '616.000', 'text': 'breeds results in a synergy where the'}, {'start': '614.000', 'end': '618.320', 'text': 'chicks exhibit a combination of the best'}, {'start': '616.000', 'end': '620.160', 'text': 'characteristics of both parents. The'}, {'start': '618.320', 'end': '621.839', 'text': 'musculature of the Cornish and the'}, {'start': '620.160', 'end': '624.800', 'text': 'growth and size of the white Plymouth'}, {'start': '621.839', 'end': '626.720', 'text': 'Rock. In addition, the F1 daughters will'}, {'start': '624.800', 'end': '628.560', 'text': 'inherit a good ability to lay eggs from'}, {'start': '626.720', 'end': '630.160', 'text': 'the White Plymouth Rock, although their'}, {'start': '628.560', 'end': '632.160', 'text': 'production will not be as high since'}, {'start': '630.160', 'end': '634.160', 'text': 'they have not been bred specifically for'}, {'start': '632.160', 'end': '636.320', 'text': 'laying as energy will be directed more'}, {'start': '634.160', 'end': '637.920', 'text': 'towards muscle growth. What would happen'}, {'start': '636.320', 'end': '640.480', 'text': 'if the cross were made the other way'}, {'start': '637.920', 'end': '642.880', 'text': 'around, white Plymouth Rock rooster with'}, {'start': '640.480', 'end': '644.880', 'text': 'white Cornish hen. While broiler'}, {'start': '642.880', 'end': '647.040', 'text': 'chickens would be obtained, the result'}, {'start': '644.880', 'end': '649.920', 'text': 'could be slightly different. Less'}, {'start': '647.040', 'end': '651.920', 'text': 'emphasis on musculature. The influence'}, {'start': '649.920', 'end': '654.000', 'text': "of the Cornish's muscle confirmation"}, {'start': '651.920', 'end': '656.000', 'text': 'would be less pronounced as the mother'}, {'start': '654.000', 'end': '658.640', 'text': 'contributes half of the genes,'}, {'start': '656.000', 'end': '660.240', 'text': 'potentially slower growth rate. Although'}, {'start': '658.640', 'end': '662.160', 'text': 'the white Plymouth Rock rooster'}, {'start': '660.240', 'end': '664.160', 'text': 'contributes faster growth than the pure'}, {'start': '662.160', 'end': '666.000', 'text': 'Cornish, the strong influence of the'}, {'start': '664.160', 'end': '667.760', 'text': "white Cornish mother's moderate growth"}, {'start': '666.000', 'end': '670.800', 'text': 'could slightly slow down the overall'}, {'start': '667.760', 'end': '672.720', 'text': 'rate. Less predictable temperament. The'}, {'start': '670.800', 'end': '674.320', 'text': "influence of the white Cornish hen's"}, {'start': '672.720', 'end': '676.880', 'text': 'stronger temperament could result in'}, {'start': '674.320', 'end': '678.959', 'text': 'less docil chickens. Remember that the'}, {'start': '676.880', 'end': '682.120', 'text': 'hen contributes more genetic information'}, {'start': '678.959', 'end': '684.720', 'text': 'to the offspring. Lower hybrid vigor'}, {'start': '682.120', 'end': '686.480', 'text': 'potentially. In some crosses, the'}, {'start': '684.720', 'end': '688.800', 'text': 'direction of the cross can influence'}, {'start': '686.480', 'end': '690.240', 'text': 'hybrid vigor, the improvement in the'}, {'start': '688.800', 'end': '692.640', 'text': 'characteristics of the offspring'}, {'start': '690.240', 'end': '694.560', 'text': 'compared to the parents. I mean that'}, {'start': '692.640', 'end': '696.480', 'text': 'crosses of the same breeds but in the'}, {'start': '694.560', 'end': '698.240', 'text': 'opposite direction, such as a white'}, {'start': '696.480', 'end': '700.399', 'text': 'Plymouth rock rooster with a white'}, {'start': '698.240', 'end': '702.480', 'text': 'Cornish hen, result in chickens with'}, {'start': '700.399', 'end': '705.200', 'text': 'less hybrid vigor than if the opposite'}, {'start': '702.480', 'end': '706.959', 'text': 'cross were made. In short, the cross of'}, {'start': '705.200', 'end': '709.120', 'text': 'a white Cornish rooster with a white'}, {'start': '706.959', 'end': '710.959', 'text': 'Plymouth Rock hen is carried out in this'}, {'start': '709.120', 'end': '712.640', 'text': 'strategic order to maximize the'}, {'start': '710.959', 'end': '714.640', 'text': 'inheritance of the excellent muscle'}, {'start': '712.640', 'end': '716.959', 'text': 'confirmation of the Cornish and combine'}, {'start': '714.640', 'end': '718.560', 'text': 'it with the good growth, size, and docel'}, {'start': '716.959', 'end': '720.480', 'text': 'temperament of the Plymouth Rock,'}, {'start': '718.560', 'end': '722.160', 'text': 'seeking to obtain homemade broiler'}, {'start': '720.480', 'end': '724.480', 'text': 'chickens with a good balance of these'}, {'start': '722.160', 'end': '727.120', 'text': 'desirable characteristics. What would be'}, {'start': '724.480', 'end': '730.320', 'text': 'the potential for crosses after the F1,'}, {'start': '727.120', 'end': '732.560', 'text': 'I mean the F2 generations and beyond? If'}, {'start': '730.320', 'end': '734.240', 'text': 'you decide to cross the F1 generation'}, {'start': '732.560', 'end': '737.440', 'text': 'chickens with each other to produce a'}, {'start': '734.240', 'end': '739.480', 'text': 'second generation F2 and so on, you'}, {'start': '737.440', 'end': '741.279', 'text': 'should expect the following greater'}, {'start': '739.480', 'end': '743.440', 'text': 'variability. The most notable'}, {'start': '741.279', 'end': '745.760', 'text': 'characteristic of subsequent generations'}, {'start': '743.440', 'end': '748.160', 'text': 'is a significant increase in variability'}, {'start': '745.760', 'end': '750.240', 'text': 'among individuals. The genes of the'}, {'start': '748.160', 'end': '752.399', 'text': 'grandparents will recombine in various'}, {'start': '750.240', 'end': '755.040', 'text': 'ways, resulting in a wide range of'}, {'start': '752.399', 'end': '757.040', 'text': 'characteristics in the F2 chickens. Some'}, {'start': '755.040', 'end': '758.959', 'text': 'may look more like the Cornish, others'}, {'start': '757.040', 'end': '760.839', 'text': 'more like the white Plymouth Rock, and'}, {'start': '758.959', 'end': '764.240', 'text': 'others will show unpredictable'}, {'start': '760.839', 'end': '766.800', 'text': 'combinations. Decrease in hybrid vigor.'}, {'start': '764.240', 'end': '769.079', 'text': 'Generally, generations after the F1'}, {'start': '766.800', 'end': '771.440', 'text': 'experience a decrease in hybrid'}, {'start': '769.079', 'end': '773.360', 'text': 'vigor. This means that the overall'}, {'start': '771.440', 'end': '775.440', 'text': 'performance in characteristics such as'}, {'start': '773.360', 'end': '778.079', 'text': 'growth rate, feed efficiency, and'}, {'start': '775.440', 'end': '780.600', 'text': 'carcass confirmation tends to be lower'}, {'start': '778.079', 'end': '783.639', 'text': 'and more inconsistent compared to the F1'}, {'start': '780.600', 'end': '785.680', 'text': 'generation. Reappearance of recessive'}, {'start': '783.639', 'end': '787.760', 'text': 'characteristics. Characteristics that'}, {'start': '785.680', 'end': '789.839', 'text': 'may not have been evident in the F1'}, {'start': '787.760', 'end': '791.760', 'text': 'generation if they were recessive in one'}, {'start': '789.839', 'end': '794.040', 'text': 'of the parents may reappear in'}, {'start': '791.760', 'end': '796.320', 'text': 'subsequent generations. Lower'}, {'start': '794.040', 'end': '798.160', 'text': 'predictability. In general, subsequent'}, {'start': '796.320', 'end': '799.720', 'text': 'generations are less predictable in'}, {'start': '798.160', 'end': '801.920', 'text': 'terms of their productive'}, {'start': '799.720', 'end': '803.880', 'text': 'characteristics. A uniform performance'}, {'start': '801.920', 'end': '806.480', 'text': 'for broiler production cannot be'}, {'start': '803.880', 'end': '808.480', 'text': 'guaranteed due to the decrease in hybrid'}, {'start': '806.480', 'end': '810.880', 'text': 'vigor and the greater variability in'}, {'start': '808.480', 'end': '813.120', 'text': 'subsequent generations. I do not'}, {'start': '810.880', 'end': '814.720', 'text': 'recommend using the F1 chickens to cross'}, {'start': '813.120', 'end': '816.240', 'text': 'them with each other if the main'}, {'start': '814.720', 'end': '817.800', 'text': 'objective is the efficient and'}, {'start': '816.240', 'end': '820.480', 'text': 'consistent production of broiler'}, {'start': '817.800', 'end': '822.639', 'text': 'chickens. To maintain the advantages of'}, {'start': '820.480', 'end': '824.240', 'text': 'hybrid vigor and obtain chickens with'}, {'start': '822.639', 'end': '826.560', 'text': 'the desired characteristics for'}, {'start': '824.240', 'end': '828.720', 'text': 'fattening, it is necessary to repeat the'}, {'start': '826.560', 'end': '831.040', 'text': 'cross between the purebred parents,'}, {'start': '828.720', 'end': '834.160', 'text': 'white Cornish rooster and white Plymouth'}, {'start': '831.040', 'end': '836.560', 'text': 'Rock hen in each production cycle. This'}, {'start': '834.160', 'end': '839.519', 'text': 'ensures that the F1 generation with its'}, {'start': '836.560', 'end': '842.639', 'text': 'associated benefits is always obtained.'}, {'start': '839.519', 'end': '845.040', 'text': 'In summary, the initial cross F1 called'}, {'start': '842.639', 'end': '846.800', 'text': 'Cornish cross offers a significant'}, {'start': '845.040', 'end': '849.760', 'text': 'improvement for meat production compared'}, {'start': '846.800', 'end': '851.839', 'text': 'to the purebred parent breeds. However,'}, {'start': '849.760', 'end': '853.440', 'text': 'to maintain that advantage, it is'}, {'start': '851.839', 'end': '855.360', 'text': 'crucial to understand the genetics'}, {'start': '853.440', 'end': '857.279', 'text': 'behind the crosses and repeat the'}, {'start': '855.360', 'end': '860.000', 'text': 'original cross instead of breeding'}, {'start': '857.279', 'end': '861.760', 'text': 'subsequent generations. This information'}, {'start': '860.000', 'end': '864.320', 'text': 'is vital for those seeking to produce'}, {'start': '861.760', 'end': '866.800', 'text': 'broiler chickens consistently at home.'}, {'start': '864.320', 'end': '869.710', 'text': 'For your success, fellow breeder. Until'}, {'start': '866.800', 'end': '877.109', 'text': 'next time.'}, {'start': '869.710', 'end': '877.109', 'text': '[Music]'}]