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Table 4 Impacts of neonatal vitamin A administration on cattle growth performance

From: Vitamin A administration at birth promotes calf growth and intramuscular fat development in Angus beef cattle

Response 0 IU (n = 9) 150,000 IU (n = 7) 300,000 IU (n = 9) SE P-value
Birth to weaning
 Birth weight, kg 35.1 35.6 35.6 0.58 0.932
 Average daily gain, kg/d 0.88b 0.98a 1.00a 0.02 0.034
Backgrounding
 Weaning weight at 210 d, kg 219.2b 248.7ab 246.0a 5.98 0.018
 Dry matter intake, kg/(head·d) 9.09 8.89 9.25 0.39 0.320
 Average daily gain, kg 1.35 1.37 1.47 0.17 0.784
 Gain: Feed ratio, kg 0.149 0.153 0.156 0.031 0.944
Finishing
 Weight at 308 d, kg 312.1b 333.0ab 339.7a 8.65 0.040
 Dry matter intake, kg/(head·d) 8.95 9.45 9.09 0.85 0.829
 Average daily gain, kg 2.06 1.99 1.90 0.17 0.627
 Feed: Gain ratio, kg 4.35 4.76 4.79 0.13 0.219
Pre-harvest
 Actual body weight (438 d), kg 581.8 610.4 588.3 10.97 0.116
  1. a-bMeans in the same row with different letter differ significantly