The effects of plane of nutrition and diet type on metabolic hormone concentrations, growth and milk production in high genetic merit dairy herd replacements
作者： A.F. Carson , A.R.G. Wylie , J.D.G. McEvoy , M. McCoy , L.E.R. Dawson
DOI: 10.1017/S1357729800054813
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摘要: Seventy high genetic merit Holstein heifers were used in two experiments to investigate (1) the effects of plane nutrition and diet type during pre-pubertal period (2) post-pubertal on metabolic hormone concentrations, growth milk production. In experiment 1, treatment 1 2 given food achieve a live-weight gain 0·70 0·95 kg/day from 3 10 months age grass silage based diet, while barley straw/concentrate diet. During period, reared had significantly higher hormone(GH) concentrations (ng/ml per h) than ( P
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