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document
Supplementation effect with slow-release urea in feed blocks for Thai beef cattle -- nitrogen utilization , blood biochemistry , and hematology . Four Thai male native beef cattle , initial body weight ( BW ) of 100 ± 3.0 kg were randomly assigned in a 4 × 4 Latin square design to receive four dietary treatments with inclusion of urea calcium sulphate mixture ( U-cas ) in feed block ( FB ) at 0 , 120 , 150 , and 180 g/kg dry matter ( DM ) . Total intakes were increased with the increasing level of U-cas supplementation in FB and the result obtained the highest when supplementation of U-cas in FB at 180 , followed by 150 , 120 , and 0 g/kg DM , respectively . Moreover , supplementation of U-cas in FB at 180 g/kg DM could reduce total N excretion ( 4.1 g/day ) , as compared to others treatments , while N retention and proportion of N retention to N intake were increased up to 6.9 g/day and 14.9 % , respectively . On the other hand , the blood biochemistry and hematological parameters were not different among treatments except concentration of plasma urea N , plasma glucose , and total blood protein were improved especially with U-cas supplementation at 180 g/kg DM in FB . In conclusion , supplementation of U-cas at 180 g/kg in FB improved feed intake , N utilization , and blood biochemistry in Thai native beef cattle fed on rice straw .
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Intervention_Physical
Supplementation effect with slow-release urea
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Outcome_Other
effect
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Outcome_Physical
reduce total N excretion
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Outcome_Physical
to N intake
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Outcome_Physical
the blood biochemistry and hematological parameters
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Outcome_Physical
except concentration of plasma urea N , plasma glucose , and total blood protein
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Outcome_Physical
improved feed intake , N utilization , and blood biochemistry
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Participant_Condition
blood biochemistry
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Participant_Sex
male
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Participant_Condition
initial body weight ( BW ) of 100 ± 3.0 kg