Nutrition, Metabolic Status and Reproductive Efficiency in Dairy Herds
نویسندگان
چکیده
منابع مشابه
Nutrition, Metabolic Status and Reproductive Efficiency in Dairy Herds
Nutrition of transition period in dairy cows dramatically increases requirements for energy, glucose, amino acids and other nutrients in dairy cows and, parallel to that, feed intake is depressed. An insufficient or imbalanced nutrient intake might lead to the malfunction of organs, causing reproductive failure. To minimize the metabolic/reproductive damage caused by negative energy balance (NE...
متن کاملRecent studies on nutritional factors affecting reproductive efficiency in U.S. dairy herds
Reproductive efficiency is declining on U.S. dairy herds. There are numerous factors that affect reproductive efficiency on individual farms. These include heat detection rate, heat stress, semen quality, bull fertility, AI technique, nutrition, body condition score, clinical and subclinical mastitis, cow comfort, and many other factors related to whole farm management, individual farm managers...
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A number of reviews have highlighted the importance of nutrition in regulating bovine reproductive efficiency (Cardoso et al., 2013; Grummer et al., 2010; Santos et al., 2010; Wiltbank et al., 2006). The effects of nutrition in the embryo donor cow have been particularly emphasized (Santos et al., 2008; Sartori et al., 2010; Sartori et al., 2013; Velazquez, 2011; Wu et al., 2013). This review w...
متن کاملReproductive performance of repeat breeders in dairy herds.
The objectives were to characterize repeat breeding in dairy cows, including reproductive performance and risk factors. Data from 613 Holstein Friesian cows in nine dairy herds across Japan were enrolled. A repeat breeder was defined as a cow that did not become pregnant after three inseminations, despite no clinically detectable reproductive disorders. In contrast, cows that became pregnant wi...
متن کاملThe Evaluation of Reproductive Performance in Dairy Herds
The routine monitoring of the efficiency of reproductive programs is necessary in large-scale dairy herds in the 21 century. The importance of the economic evaluation of these programs is increasing, as well, since many thousands of euros are spent on reproductive management on a farm. However, different interpretations of reproductive indices cause difficulties among professionals when compari...
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ژورنال
عنوان ژورنال: Open Journal of Animal Sciences
سال: 2016
ISSN: 2161-7597,2161-7627
DOI: 10.4236/ojas.2016.61010