“Sustained fertility in dairy cows: problems and suggestions” Reproductive performance in high-producing dairy cows: Can we sustain it under current practice?
نویسندگان
چکیده
Division of Reproduction, Dept of Clinical Sciences, Faculty of Veterinary Medicine and Animal Science (FVMAS), Swedish University of Agricultural Sciences (SLU), PO Box 7054, 75007 Uppsala, Sweden Dept of Animal Environment and Health, FVMAS, SLU, PO Box 234, 532 23 Skara, Sweden Division of Ruminant Diseases and Epidemiology, Dept of Clinical Sciences, FVMAS, SLU, Uppsala, Sweden Dept of Animal Breeding and Genetics, FVMAS, SLU, PO Box 7023, 75007 Uppsala, Sweden VikingGenetics, Örnsro, PO Box 64, SE-532 21 Skara, Sweden Swedish Dairy Association, PO Box 210, SE-101 24 Stockholm, Sweden * Corresponding author: [email protected]
منابع مشابه
Factors affecting reproductive performance in high milk-producing Holstein cows.
Although the number of dairy farms is decreasing, that of large farms is increasing in Japan. Milk production in Japanese dairy cows has increased from 62 kg/year to 88 kg/year over the last 2 decades. However, Japanese dairy cows are experiencing a sustained decline in reproductive performance, calving intervals, and days open; further, the number of inseminations required for conception have ...
متن کاملStudy on serum glucose, insulin, NEFA, BHBA and lipid profile in different productive status of high producing Holstein dairy cows
Background: Metabolic profiles have been used in efforts to predict pre parturient problems and fertility, to diagnose metabolic diseases, and to assess nutritional status in dairy cows. These profiles may help to confirm the diagnosis of sub clinical diseases, to be aware of possible causes of infertility in the herds, or to monitor improvement in herd animals. OBJECTIVES: This study investiga...
متن کاملCirculating metabolic hormones in different metabolic states of high producing Holstein dairy cows
Background: Information regarding the metabolic hormones in different metabolic states of high producing dairy cows can aid high producing herds to manage and resolve the metabolic and production problems. Furthermore, it can be considered as a tool to evaluate metabolic status of dairy cows. Herd managers can also evaluate the energy input-output relationships by assessing the metabolic profil...
متن کاملAnimal Factors Condition Milk Performance and Quality of Grazing Dairy Cows
The base of this review is to consider the relevant role that animal factors (potential milk yield, body weight, body condition score, state of lactation, parity and fertility) play on milk performance (considering the energy balance and the rumen function across the full lactation curve of animals) and milk quality (milk protein content, milk fat content, milk lactose content, vitamins, minera...
متن کاملThe effect of administration of gonadotropin releasing hormone analogue at estrus or during luteal phase on reproductive performance of dairy cows maintained under sub-temperate climate
Overall, 531 dairy cows were inseminated with the aim to study their reproductive performance following administration of GnRH analogue on different days of estrous cycle with different doses. These cows were divided into six treatment and one control group. Depending upon different treatment groups, Buserelin acetate was injected at a dose of 10.5 µg or 21.0 µg on different days (0, 5 or 12) o...
متن کامل