26608
document
Milk production of dairy cows fed wet corn gluten feed during the dry period and lactation . An experiment was conducted with 36 primiparous and 40 multiparous Holstein cows to examine the effects of feeding wet corn gluten feed ( WCGF ) on 305-d milk production , dry matter ( DM ) intake , body condition score ( BCS ) , and health . The experimental treatments included : 1 ) control -- WCGF not fed ( n = 27 ) ; 2 ) WCGF-L-cows received diets containing WCGF ( 38 % DM basis ) during lactation ( n = 23 ) ; and 3 ) WCGF-DL -- cows received diets containing WCGF ( 38 % DM basis ) during the dry period and lactation ( n = 26 ) . During the dry period , cows consuming WCGF were observed to have a significant gain in BCS ( 0.07 +/- 0.06 ) compared with a loss in BCS in cows fed the control diet ( control = -0.11 +/- 0.06 and WCGF-L = -0.04 +/- 0.06 ) . During lactation , there were no differences by treatment on BCS . Cows consuming WCGF during lactation consumed more feed compared with the control : 25.4 , 23.8 , and 21.2 +/- 0.76 kg/d for WCGF-L , WCGF-DL , and the control , respectively . Milk production was higher for cows consuming WCGF : 35.0 , 34.7 , and 31.1 +/- 2.1 kg/d for WCGF-L , WCGF-DL , and the control , respectively . No differences were found in either DM intake or actual milk yield between the WCGF-L and WCGF-DL treatments , indicating that prepartum diets did not influence lactational performance . The WCGF diets resulted in significant reductions in the concentration of milk fat ( 3.94 , 3.74 , and 4.15 +/- 0.08 % for WCGF-L , WCGF-DL , and the control , respectively ) , but because total milk yield was increased , there were no differences in total milk fat yield . In addition , 3.5 % of fat-corrected milk tended to be affected by diet : 38.9 , 36.3 , and 34.7 +/- 1.93 kg/d for WCGF-L , WCGF-DL , and the control , respectively . The increasing effect of DM intake and milk yield in cows consuming WCGF resulted in a similar efficiency of 3.5 % fat-corrected milk production for all treatments , averaging 1.5 +/- 0.09 . Total protein yields were significantly higher for cows consuming WCGF diets during lactation : 1.15 , 1.10 , 1.00 +/- 0.06 kg/d for WCGF-L , WCGF-DL , and the control , respectively . These results indicate that diets may be formulated to contain as much as 37.5 % WCGF ( DM basis ) .
26609
Intervention_Other
wet corn gluten feed ( WCGF )
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Intervention_Physical
control -- WCGF not fed ( n = 27 ) ; 2 ) WCGF-L-cows received
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Intervention_Other
diets containing WCGF
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Intervention_Physical
( 38 % DM basis ) during lactation ( n = 23 ) ; and 3 ) WCGF-DL -- cows received
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Intervention_Other
diets containing WCGF
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Intervention_Physical
( 38 % DM basis ) during the dry period and lactation ( n = 26 )
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Outcome_Physical
Milk production
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Outcome_Physical
milk production , dry matter ( DM ) intake , body condition score ( BCS ) , and health .
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Outcome_Other
feed
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Outcome_Mental
actual milk yield
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Outcome_Physical
concentration of milk fat
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Outcome_Physical
total milk yield
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Outcome_Physical
Total protein yields
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Participant_Sample-size
36 primiparous
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Participant_Sample-size
40 multiparous