reproductive consequences of using sexed semen in holstein dairy herds of isfahan province
نویسندگان
چکیده
the objective of this study was to explore the reproductive consequences of using sex-sorted semen on sex ratio, conception rate and reproductive disorders (dystocia, abortion, stillbirth) in holstein heifers. reproduction performances records which were collected during 2006 to 2013 from 4 large dairy herds in isfahan province of iran were used and analyzed by genmod procedure of sas software. rate of female born of sexed semen (86.3%) was 1.8 times higher than those of conventional semen (48.5%). conception rate was generally decreased in three first services from 61.0% to 47.2% (p0.05). the results of this study can used for analyses of cost- revenue for using sex-sorted semen dairy herds.
منابع مشابه
Genetic and Phenotypic Trends of Productive and Reproductive Traits in Iranian Holstein Dairy Cattle of Isfahan Province
Productive and reproductive traits have great importance in international dairy cattle breeding objectives. Production, reproduction (days open and calving interval) and pedigree data of Iranian Holstein dairy cattles were collected between 2002 and 2012 from 47 herds in Isfahan province. The data set consisted of 30179 records from 18837 registered IranianHolstein dairy cattles. Single trait r...
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عنوان ژورنال:
علوم دامی ایرانجلد ۴۶، شماره ۳، صفحات ۲۷۱-۲۷۶
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