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Table 2 Effect of different diets on milk production performance in dairy cows

From: Feeding a high-concentrate corn straw diet increased the release of endotoxin in the rumen and pro-inflammatory cytokines in the mammary gland of dairy cows

Items Diets1 P-value
LCF HCS LCS
Dry matter intake (kg/d) 20.74 ± 1.87a 20.33 ± 2.23a 18.52 ± 0.97b 0.022
Milk yield (kg/d) 25.64 ± 4.71A 21.75 ± 3.89B 16.84 ± 4.60C <0.001
4% fat corrected milk (kg/d) 26.27 ± 3.99A 20.38 ± 3.72B 16.74 ± 5.00C <0.001
Milk fat content (%) 4.23 ± 0.69a 3.58 ± 0.42b 3.95 ± 0.52b <0.001
Milk protein content (%) 3.18 ± 0.19a 3.07 ± 0.22b 3.04 ± 0.13b 0.012
Milk fat yield (kg/d) 1.07 ± 0.18a 0.78 ± 0.16b 0.67 ± 0.22c <0.001
Milk protein yield (kg/d) 0.81 ± 0.13A 0.66 ± 0.11B 0.51 ± 0.14C <0.001
Milk synthesis efficiency (g/g) 1.23 ± 0.18a 1.08 ± 0.16ab 0.98 ± 0.22b 0.019
4% fat corrected milk synthesis efficiency (g/g) 1.23 ± 0.18a 1.01 ± 0.14b 0.95 ± 0.25b 0.011
Milk fat synthesis efficiency (%) 4.91 ± 0.97a 3.83 ± 0.58b 3.74 ± 1.16b 0.016
Milk protein synthesis efficiency (%) 3.86 ± 0.42a 3.30 ± 0.38ab 2.94 ± 0.67b 0.001
  1. 1LCF is low-concentrate mixed forage diet with a concentrate to roughage ratio of 46 : 54; HCS is high-concentrate corn straw diet with a concentrate to roughage ratio of 65 : 35; LCS is low-concentrate corn straw diet with the same concentrate to roughage ratio (46 : 54) as LCF.
  2. A-CMeans within a row differ (P < 0.01).
  3. a-cMeans within a row differ (P < 0.05).