Relationship of transferrin gene genotype with the reproductive performance in Holstein cows | ||
| journal of kerbala university | ||
| Article 1, Volume 12, Issue 1, March 2016, Pages 161-169 PDF (0 K) | ||
| Abstract | ||
| This study was conducted in Dairy Cattle Farm, the Physiology laboratory, college, Abu-Ghraib and in a laboratory dealing with the analysis of molecular genetic from the period of 1/11/2013 to 1/11/2014. The objective of this study is to investigate the relationship of genotypes for transferrin gene (Tf) with the reproductive traits of 40 Holstein cows and their birth calves mortality until the weaning age.The effect of genotype of Tf gene was highly significant (P<0.01) with the services per conception and days open, being cows with TT genotype gave the better reproductive performance.The variation in non return rate and calving interval was significant (P<0.05) towords the genotype of TT .The results shows that the percentage of birth calves mortality in cows of TT genotype lacked significance,while it the highest (P<0.05) in the cows with CC genotype (10.00 ± 0.05%), The percentage of birth calves mortality until weaning was not affected with the genotype differences.In conclusion polymorphism of Tf gene can adopted for the improvement is the reproductive performance of Holestein cows.Moreover,the selection of TT cows can be done to maximize the economic gain of their breeding projects. | ||
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