Sürdürülebilir Kalkınma Amaçları
Yayınlar
- MakaleAçık Erişim2018Relationships between GH/AluI Polymorphism and Some Performance Traits in Holstein Cows
Aksakal, Vecihi; Sönmez, Zeynep; Bayram, Bahri; Özdemir, Memiş
The aim of this study is to determine the genotype and allelic frequencies of Growth Hormone (GH) gene, to present the genetic variation, and to research the relationships between the GH genotypes and some milk production traits of 115 organically grown Holstein cows. It was seen that GH gene LL, LV ve VV genotype frequencies is 0.41, 0.49, ve 0.10 respectively, and is stable according to Hardy-Weinberg equilibrium genetic balance test in the cattle population. Moreover, Lactation milk yield averages were found to be 7136 kg, 7470 kg and 8017 kg for the LL, LV and VV genotypes, respectively. There was no statistically significant relationship between the actual lactation milk yield, 305d milk yield, peak daily yield, lactation length averages of different genotypes. In the study, GH/AluI polymorphism was found to be insufficient for improvement of the milk yield traits alone
- MakaleYalnız künye2017Effect of Growth Hormone Genetic Polymorphism on Calf Birth Weight
Sonmez, Zeynep; Aksakal, Vecihi; Özdemir, Memiş
The aim of study were to present relationships between birth weight of 94 Holstein calves with genotype structures of each sample’s Growth Hormone (GH) determined through PCR-RFLP method and to detect the population’s genetic variation by determining the genotype and allel frequency distribution. In the study, according to the analysis result, it was determined that Growth Hormone gene LL genotype was 41.9 kg, LL was 40.8 kg, and VV was 42.2 kg for the birth weight. A significant relationship between birth weight with GH genotypes could not be found. It was seen that the calf population is not stable according to Hardy-Weinberg genetic balance test.