Using native bull sperm for insemination HF breed and shortening service period of temporary sterility of dairy cows and increase in the percentage of pregnancy | Korišćenje nativne sperme bikova HF rase za osemenjavanje i skraćivanje servis perioda kod privremenog steriliteta mlečnih krava i povećanje procenta steonosti
2011
Petrujkić, T., Fakultet veterinarske medicine, Beograd | Vaić, D., PKB Korporacija, Beograd - Padinska Skela (Serbia) | Petrujkić, B., Fakultet veterinarske medicine, Beograd | Ivković, B., Vetagra-Jugohemija, Beograd (Serbia) | Bojkovski, J., Fakultet veterinarske medicine, Beograd (Serbia) | Jeremić, I., Veterinarska stanica PKB, Beograd - Padinska Skela (Serbia) | Katić, M., PKB Korporacija, Beograd - Padinska Skela (Serbia) | Kojić, M., PKB Korporacija, Beograd - Padinska Skela (Serbia)
On large farms of dairy cattle HF breed, very rarely achieved fertility in a herd of over 80% of cows, per year. On farms in Serbia are very few dairy farms are able to achieve fertility of over 75-77% in one year. This is related to herd of cows sterility, which is caused by multiple factors such as nutrition diet, posture, height of lactation, an organization monitoring the animals on the farm insemination procedure, training of veterinary and other staff as well as the interest of workers, motivation of workers to produce milk at the farm. In this study, with the native sperm of two bulls from the Center for reproduction, PKB Corporation, Belgrade (Serbia) in the fall of 2010 was inseminated a number of cows (568) and examined the fertility of cows on two dairy farms with the use of lists to track production and reproductive status of cows on farms PKB Corporation (Serbia).
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