Factors affecting number of services per conception of Holstein cattle in Syrian coast
published by Damascus University
in 2014
in Animal Production
and research's language is
العربية
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Abstract in English
This study was conducted at Fedio Dairy Station using 2189 records for 790
Holstein cattle to study the effect of frozen–thawed bull semen, inseminator,
calving year (CY), calving season (CS) and parity (P) on the number of services
per conception (S/C). Data were obtained between the period 2003 and 2013
and evaluated according to GLM procedure (SAS 9). Analysis of variance was
used to determine the effect of studied factors on S/C.
References used
Al-Hassan, M. J. 2003. Assessment of the reproductive performance of a Holstein dairy herd as affected by the efficiency of the inseminator .J. King Saud. Univ. 15.Agric.Sci., 2:79-88
Beever, D. E. 2006. The impact of controlled nutrition during the dry period on dairy cow health, fertility and performance. Animal Reproduction Science. 96 (3-4): 212-226
Berry, D. P., J. F. Kearney, K. Twomey and R. D. Evans. 2013. Genetics of reproductive performance in seasonal calving dairy cattle production systems. Irish, J. Agric.Food Res., 52: 116