Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 4 of 4 for “"days to conception"”.
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Genomics of heifer pregnancy, days open, and days to conception in Red Angus heifers
Although it is challenging to collect information on reproductive traits, fertility traits are believed to play a significant role in the growth of the beef industry and bring revenue to the producers. It has been challenging to make genetic improvement of fertility traits because of scarce records …
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Relationships among nutritional regimen, metabolic disorders, reproduction, and production in dairy cows during the transition period
… in dairy cows. A meta-analysis approach was used to investigate the association between prepartum energy feeding regimen, productive parameters, health, and reproductive performance. Days to conception (DTC) was used as the dependent variable to assess reproductive performance. The database was …
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Artificial Induction of Lactation in Nonbreeder Dairy Cows
… cows (26 Holsteins and 8 Jerseys) were subjected to an estrous synchronization protocol administering 2 PGF2Æ Ã injections 11 d apart prior to beginning the lactation-induction protocol. Artificial induction of lactation yielded a 92% success rate for Holstein cows with success defined as …
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Initiation of Parturition in Dairy Cows with Dexamethasone and Dexamethasone Plus Estradiol Benzoate
… 2) had average gestation lengths of 280 and 281 days, respectively. In Trial 1, calving difficulty was greater (P <.05) while birth weight of calves was 3.0 kg less (P<.05) for the induced cows compared to controls. In Trial 2, no differences in calving difficulty were found, while calf birth …