Progesterone concentrations during estro
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J. F. Burchard; D. H. Nguyen; E. Block
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Article
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1998
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John Wiley and Sons
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English
⚖ 122 KB
👁 2 views
Sixteen multiparous nonpregnant lactating Holstein cows (each weighing 662 +/- 65 kg in 150.4 +/- 40 day of lactation) were confined to wooden metabolic cages with 12:12 h light:dark cycle during the experiment. The cows were divided into two sequences of eight cows each and exposed to electric and