Articles | Volume 59, issue 2
https://doi.org/10.5194/aab-59-209-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/aab-59-209-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Original study
| 
19 May 2016
Original study |
| 19 May 2016
Genetic parameters of reproductive traits in Tunisian Holsteins
Hafedh Ben Zaabza
CORRESPONDING AUTHOR
Institut National Agronomique 43, Avenue Charles Nicoles, 1082 Tunis Mahrajène, Tunisia
Abderrahmen Ben Gara
Département des productions animales, Ecole
supérieure d'Agriculture de Mateur, 7030 Mateur, Tunisia
Hedi Hammami
Animal Science Unit, Gembloux Agricultural University,
5030 Gembloux, Belgium
Borni Jemmali
Département des productions animales, Ecole
supérieure d'Agriculture de Mateur, 7030 Mateur, Tunisia
Mohamed Amine Ferchichi
Institut National Agronomique 43, Avenue Charles Nicoles, 1082 Tunis Mahrajène, Tunisia
Boulbaba Rekik
Département des productions animales, Ecole
supérieure d'Agriculture de Mateur, 7030 Mateur, Tunisia
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Hafedh Ben Zaabza, Abderrahmen Ben Gara, Hedi Hammami, Mohamed Amine Ferchichi, and Boulbaba Rekik
Arch. Anim. Breed., 59, 243–248, https://doi.org/10.5194/aab-59-243-2016, https://doi.org/10.5194/aab-59-243-2016, 2016
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A Bayesian and REML analyses were used on Tunisian dairy cattle data. Genetic parameters for 305-day milk, fat, and protein yields were estimated. Heritability estimates by using Bayesian method ranged from 0.187 to 0.273, and slightly higher than the corresponding REML. Large genetic correlations (> 0.88) among milk, fat, and protein yields were found for the two methods. This study suggests that results from both methods were reasonably similar to suggest both methods can be used.
Sihem Amiri, Bayrem Jemmali, Mohamed Amine Ferchichi, Hajer Jeljeli, Rekik Boulbaba, and Abderrahmane Ben Gara
Arch. Anim. Breed., 61, 481–489, https://doi.org/10.5194/aab-61-481-2018, https://doi.org/10.5194/aab-61-481-2018, 2018
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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.
Mohamed Amine Ferchichi, Bayrem Jemmali, Sihem Amiri, Abderrahmane Ben Gara, and Boulbaba Rekik
Arch. Anim. Breed., 61, 305–310, https://doi.org/10.5194/aab-61-305-2018, https://doi.org/10.5194/aab-61-305-2018, 2018
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This study aims to investigate the screening of leptin genetic polymorphism and its effect on lameness prevalence. Prevalence of lameness was evaluated and results showed that genotypes and other factors included in the logistic regression model significantly affect the prevalence of lameness in Holstein cows (P < 0.01). The probability of lameness incidence varied between 37 % and 99 % with parity. This recorded incidence is greater in winter and autumn than in the summer and spring.
Bayrem Jemmali, Mohamed Mezir Haddad, Nawel Barhoumi, Syrine Tounsi, Faten Lasfer, Amira Trabelsi, Belgacem Ben Aoun, Imen Gritli, Soufiene Ezzar, Abdelhak Ben Younes, Mohamed Habib Ezzaouia, Boulbaba Rekik, and Hatem Ouled Ahmed
Arch. Anim. Breed., 60, 153–160, https://doi.org/10.5194/aab-60-153-2017, https://doi.org/10.5194/aab-60-153-2017, 2017
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This study aimed at screening genetic diversity and differentiation in four horse breeds raised in Tunisia: the Barb (BA), Arab-Barb (AB), Arabian (AR), and English Thoroughbred (TS) breeds. A total of 200 blood samples were collected and genomic DNA was extracted. The average number of alleles per locus was 7.52 (0.49), 7.35 (0.54), 6.3 (0.44), and 6 (0.38) for the AB, BA, AR, and TS, respectively. Results showed that the important amount of genetic variation was within population.
Hafedh Ben Zaabza, Abderrahmen Ben Gara, Hedi Hammami, Mohamed Amine Ferchichi, and Boulbaba Rekik
Arch. Anim. Breed., 59, 243–248, https://doi.org/10.5194/aab-59-243-2016, https://doi.org/10.5194/aab-59-243-2016, 2016
Short summary
Short summary
A Bayesian and REML analyses were used on Tunisian dairy cattle data. Genetic parameters for 305-day milk, fat, and protein yields were estimated. Heritability estimates by using Bayesian method ranged from 0.187 to 0.273, and slightly higher than the corresponding REML. Large genetic correlations (> 0.88) among milk, fat, and protein yields were found for the two methods. This study suggests that results from both methods were reasonably similar to suggest both methods can be used.
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Sena Ardicli, Hale Samli, Deniz Dincel, Bahadir Soyudal, and Faruk Balci
Arch. Anim. Breed., 60, 303–313, https://doi.org/10.5194/aab-60-303-2017, https://doi.org/10.5194/aab-60-303-2017, 2017
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The impact of polymorphisms of the calpain 1 (CAPN1), calpastatin (CAST), leptin (LEP) and growth hormone receptor (GHR) on carcass characteristics and meat quality traits in 400 purebred Holstein bulls was examined using polymerase chain reaction and restriction fragment length polymorphism method. In the current study, the CAPN1, CAST and GHR genotypes confirmed significant associations with important traits in adequate numbers of animals.
Sena Ardicli, Deniz Dincel, Hale Samli, and Faruk Balci
Arch. Anim. Breed., 60, 61–70, https://doi.org/10.5194/aab-60-61-2017, https://doi.org/10.5194/aab-60-61-2017, 2017
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The present study was based on the association of polymorphisms at LEP, CAST, CAPN1, GHR, FABP4 and DGAT1 genes with fattening performance and carcass traits in Simmental bulls. Results indicated that final weight, fattening period, total weight gain and average daily gain differentiated the CAST and CAPN1 marker genotypes. Moreover, a novel effect of the LEP A80V on carcass weight and dressing percentage was observed. The results could be indicative for future studies on beef production.
Hamed Amirpour Najafabadi, Saeid Ansari Mahyari, Mohammad Ali Edriss, and Eva Strapakova
Arch. Anim. Breed., 59, 387–393, https://doi.org/10.5194/aab-59-387-2016, https://doi.org/10.5194/aab-59-387-2016, 2016
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This study aimed to use survival analysis and examine the factors affecting functional herd life (FHL) of cows in Isfahan using the Weibull proportional risk model in Isfahan to estimate of breeding values for functional herd life. The SC, milk production, age at first calving and milk period showed significant effects on LPL (P < 0.001) according to the likelihood ratio test. Although there were some fluctuations in genetic trends, an overall increase was observed which leads to a longer FHL
Eva Strapáková, Juraj Candrák, and Peter Strapák
Arch. Anim. Breed., 59, 329–335, https://doi.org/10.5194/aab-59-329-2016, https://doi.org/10.5194/aab-59-329-2016, 2016
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The advantages of increasing lactation persistency in dairy cattle are indisputable on the practical herd level. More persistent lactation brings a longer high-production period. In this study estimate the breeding values of lactation persistency, test day of milk yield, somatic cell score, reproductive traits (calving interval, days open), and longevity in Slovak Holstein dairy cattle were estimated and the relationship between persistency of lactation and other selected trait was analyzed.
Xiaojuan Long, Xibi Fang, Ping Jiang, Hang Xiao, Haibin Yu, Mengjiao Zhou, Yunzhi Pan, Chunyan Lu, Zhihui Zhao, and Runjun Yang
Arch. Anim. Breed., 59, 301–307, https://doi.org/10.5194/aab-59-301-2016, https://doi.org/10.5194/aab-59-301-2016, 2016
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AGPAT6 is a key candidate gene in the lipid metabolism pathway. We detected two single nucleotide polymorphisms (SNPs) in bovine AGPAT6 exons, and we analyzed 33 traits associated with meat quality and the carcass of Chinese Simmental cattle. SNP1 was significantly associated with back fat thickness and fat coverage rate. SNP2 was significantly associated with fat coverage rate and marbling score. Thus, the SNPs of AGPAT6 may be genetic factors influencing carcass composition of beef cattle.
Hafedh Ben Zaabza, Abderrahmen Ben Gara, Hedi Hammami, Mohamed Amine Ferchichi, and Boulbaba Rekik
Arch. Anim. Breed., 59, 243–248, https://doi.org/10.5194/aab-59-243-2016, https://doi.org/10.5194/aab-59-243-2016, 2016
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A Bayesian and REML analyses were used on Tunisian dairy cattle data. Genetic parameters for 305-day milk, fat, and protein yields were estimated. Heritability estimates by using Bayesian method ranged from 0.187 to 0.273, and slightly higher than the corresponding REML. Large genetic correlations (> 0.88) among milk, fat, and protein yields were found for the two methods. This study suggests that results from both methods were reasonably similar to suggest both methods can be used.
K. Abfalter, W. Brade, and O. Distl
Arch. Anim. Breed., 59, 71–77, https://doi.org/10.5194/aab-59-71-2016, https://doi.org/10.5194/aab-59-71-2016, 2016
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Estimated breeding values (EBVs), relative breeding values (RBVs), and daughter yield deviations of Holstein cows with exceptional longevity (more than nine lactations completed) and the RBVs of their sires were analyzed. Exceptional cows had on average significantly lower EBVs for yield traits but significantly higher RBVs for somatic cell score (RZS) and functional longevity (RZN). Correlations among the proportion of exceptional cows per sire and RZN, RZS as well as fitness were positive.
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Short summary
Genetic parameters for 11 456 Tunisian Holstein cows were estimated for the following five reproductive traits: calving interval (CI), calving to first service interval, calving to conception interval (CCI), first service to conception interval and number of services per conception. Low heritabilities were estimated for these traits, and genetic correlation estimates between them were moderately high. The CCI–CI genetic correlation was 0.85, indicating that they are the same trait genetically.
Genetic parameters for 11 456 Tunisian Holstein cows were estimated for the following five...
