Sfoglia per Soggetto "BEEF-COWS"
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Reproductive efficiency of three estrus synchronization schemes comprising fixed-time insemination in dairy cows
(2000)The objective of this field trial was to compare the odds of pregnancy at 25 days (P25) and at 60 days (P60), of embryonic death (ED) between 25 and 60 days, and of non-pregnant cows returning to heat 20-25 days after ...