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Articles | Volume 61, issue 4
Articles | Volume 61, issue 4
https://doi.org/10.5194/aab-61-481-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/aab-61-481-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 61, issue 4
Original study
 | 
19 Dec 2018
Original study |  | 19 Dec 2018

Assessment of growth hormone gene polymorphism effects on reproductive traits in Holstein dairy cattle in Tunisia

Sihem Amiri, Bayrem Jemmali, Mohamed Amine Ferchichi, Hajer Jeljeli, Rekik Boulbaba, and Abderrahmane Ben Gara

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Latest update: 20 Nov 2024
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Short summary
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.
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