reproductive performance for holstein friesian × arsi and holstein friesian × boran crossbred cattle
نویسندگان
چکیده
the study was carried out at agarfa atvet college dairy farm to evaluate the reproductive performance of holstein friesian× arsi and holstein friesian ×boran cattle. for the study, records compiled from 1983 to 2012 at the agarfa dairy farm were used as original data. the effects of breed, bloodlines, season and parity on the reproductive traits were evaluated. data were analyzed using the general model of the sas program. the overall mean ± se of age at first service (afs), age at first calving (afc), days open (do), calving interval (ci), number of service per conception (nspc), breeding efficiency (be) and longevity were 32.05 ± 0.57 months, 41.16 ± 0.56 months, 194.62 ± 3.42 days, 475.92 ± 3.44 days, 1.35 ± 0.03 service, 68.67 ± 0.01% and 7.77 ± 0.25 years, respectively. breed had significant effect (p
منابع مشابه
Reproductive Performance for Holstein Friesian × Arsi and Holstein Friesian × Boran Crossbred Cattle
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عنوان ژورنال:
iranian journal of applied animal scienceناشر: islamic azad university - rasht branch
ISSN 2251-628X
دوره 5
شماره 1 2015
کلمات کلیدی
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