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Table 8 Lactation performance of lactating Holstein dairy cows with different total milk solids yields1

From: Characterization and mitigation option of greenhouse gas emissions from lactating Holstein dairy cows in East China

Items2 LTMSY MTMSY HTMSY SEM P-value
Total milk solid yield, g/d 3789c 4714b 5512a 20.3 0.031
Milk yield, kg/d 31.0c 37.6b 44.5a 2.36 0.021
Milk fat, % 3.74 3.73 3.73 0.20 0.916
Milk protein, % 3.27 3.31 3.29 0.22 0.871
Total milk solids, % 12.4 12.6 12.4 0.86 0.893
FCM yield, kg/d 29.5c 36.0b 42.7a 2.34 0.036
ECM yield, kg/d 29.9c 36.9b 43.6a 2.35 0.041
  1. 1LTMSY low total milk solids yield (< 4325, n = 33); MTMSY medium total milk solids yield (4325–5115, n = 39); HTMSY high total milk solids yield (> 5115, n = 39); n, number of observations in the data set
  2. 2FCM Fat-corrected milk (kg/d) = 0.4 × milk yield (kg/d) + 15 × fat yield (kg/d). ECM Energy-corrected milk (kg/d) = milk yield (kg/d) × [(38.3 × fat (%) × 10 + 24.2 × protein (%) × 10 + 16.54 × lactose (%) × 10 + 20.7) ÷ 3140]
  3. a-cMeans in the same row with different superscripts are significantly different (P < 0.05)