Reproductive performance of sexed versus conventional semen in Holstein heifers in various semiarid regions of Iran
نویسندگان
چکیده
منابع مشابه
A field study on the reproductive efficiency of sex-sorted semen in Holstein heifers
Sex-sorted semen can increase the profitability of dairy cattle by producing offspring of the desired sex. The objective of the present study was to compare conception rate, stillbirth, calving difficulty and sex ratios from sexed and conventional semen in a commercial dairy herd in Isfahan province, Iran. Data were collected from April 2009 until December 2015 on 13,343 inseminations in 8,011 ...
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Effect of insemination-related factors on pregnancy rate using sexed semen in Holstein heifers
The objectives were to determine the effects of insemination with sexed semen at spontaneous and induced estrus, fixed-time insemination at synchronized estrus, the deposition site, estrous intensity, housing, age, body weight, and bull on the pregnancy rate in Holstein heifers, and to compare the quality traits of sexed sperm with those of unsexed semen. The study was conducted on 3206 heifers...
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ژورنال
عنوان ژورنال: Italian Journal of Animal Science
سال: 2017
ISSN: 1828-051X
DOI: 10.1080/1828051x.2017.1321473