Laboratory of Improvement and Integrated Development of Animal Productivity and Food Resources,
Higher School of Agriculture of Mateur, University of Carthage, Tunis, Tunisia
Mohamed Amine Ferchichi
National Agronomic Institute of Tunisia, 43 Charles Nicoles street 1082, Tunis-Mahrajène, Tunisia
Hajer Jeljeli
Laboratory of Improvement and Integrated Development of Animal Productivity and Food Resources,
Higher School of Agriculture of Mateur, University of Carthage, Tunis, Tunisia
Rekik Boulbaba
Laboratory of Improvement and Integrated Development of Animal Productivity and Food Resources,
Higher School of Agriculture of Mateur, University of Carthage, Tunis, Tunisia
Abderrahmane Ben Gara
Laboratory of Improvement and Integrated Development of Animal Productivity and Food Resources,
Higher School of Agriculture of Mateur, University of Carthage, Tunis, Tunisia
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Genetic polymorphims in the growth hormone (GH) gene were studied in 410 Holstein dairy cows. Genotyping was carried out using PCR-RFLP. Data were analyzed by the MIXED procedure to reveal the effect of GH genotypes on reproductive traits. GH-AluI had a favorable effect on exanimate traits except for the age at the first calving. The homozygous LL genotype seemed to be advantageous for calving interval and days open. A significant effect of different GH-AluI–MspI combined genotypes was found.
Genetic polymorphims in the growth hormone (GH) gene were studied in 410 Holstein dairy cows....