Search results with tag "Reproductive performance"
ANIMAL WELFARE AND DAIRY CATTLE PRODUCTION …
www.oie.int5. Reproductive efficiency Reproductive efficiency can be an indicator of animal health and animal welfare status. Poor reproductive performance, compared with the targets expected for a particular breed, can indicate animal welfare problems. Examples may include: – anoestrus or extended post-partum interval, – low conception rates,
Diseases causing reproductive losses in breeding cattle
www.dpi.nsw.gov.aureproductive performance. If you use a restricted mating season, then analysis of the calving pattern can help narrow down the possible causes. If herd fertility is normal, the majority of calves (65 to 70 per cent) should be born within the first 6 weeks of the start of calving. If this calving peak does not occur, and births are
乳牛の繁殖性低下の現状と子宮環境
kachikukansen.orgCurrent situation of fertility decline in dairy cattle and its relation to the uterine environment ― Strategies for improving the reproductive performance in high yielding dairy cows ― 図2．ホルスタイン種の乳量と分娩間隔
Breeding Strategies for Maintaining Colonies of Laboratory ...
ko.cwru.edu• Replace breeders before their reproductive performance declines. Maintain breeder pairs of various ages by replacing a percentage of them monthly or weekly. A colony of mixed-aged breeders produces a more consistent number of pups than does a colony of even-aged breeders. • Replace non-productive breeders.