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  • Küçük Resim
    Öğe
    Effects of supplemental feeding on performance of Kilis goats kept on pasture condition
    (Taylor & Francis Ltd, 2016) Gul, Sabri; Keskin, Mahmut; Gocmez, Zeynel; Gunduz, Zuhal
    In this study, the effects of supplemental feeding to extensive pasture condition on some reproductive and milk yield characteristics in Kilis goats have been investigated. For this study, 180 Kilis goats were used. These goats were assigned into two groups as control and treatment. Control goats were allowed to graze pasture, while treatment goats were additionally fed 750 g/day with concentrated feed per head plus pasture facility. At the end of the study the average fertility rate, marketable milk yield, lactation length and lactation milk yield were determined as 115.56%, 215.5 +/- 5.28 I, 212.5 +/- 1.09 days 293.7 +/- 5.76 I, respectively, in the control goats; 131.1%, 304.1 +/- 6.48 I, 256.5 +/- 1.79 days, 408.3 +/- 7.21 I, respectively, in the treatment goats. To conclude, supplementary feeding plus pasture improved reproductive and milk yield performance in Kilis goats.
  • Küçük Resim
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    The genetic structure of the goat breeds belonging to Northwest part of Fertile Crescent
    (Elsevier, 2020) Gul, Sabri; Yilmaz, Onur; Gunduz, Zuhal; Keskin, Mahmut; Cemal, Ibrahim; Ata, Nezih; Onel, Suleyman Ercument
    The present study was performed to reveal genetic diversity and population structure of four native Turkish goat breeds (Hatay, Kilis, Shami and Hair), raised in Hatay and Kilis provinces located in northwest part of Fertile Crescent, using twenty-two microsatellite markers. Animal material for the study was consisted of 246 goats from Hair (60), Shami (62), Kilis (64) and Hatay (60) breeds. A total of 458 alleles were detected from twenty two markers studied. Results obtained for the mean number of alleles (20.82), expected heterozygosity (0.89) and polymorphic information content (0.88) indicated that the total analyzed population is characterized by noticeable genetic variability. The value obtained for the global coefficient of gene differentiation showed that the majority of the total genetic variation is due to individual differences (97.50%). Clustering analysis divided native goat breeds raised in Fertile Crescent into two clusters. The first cluster was consisted by Kilis and Hatay goat breeds, the second cluster was formed by Shami and Hair goat breeds. Results indicated that Kilis goat and Hatay goats are genetically closer than the other studied breeds. The results obtained from the present study will be helpful for constructing suitable selection program for indigenous goat breeds studied. On the other hand, obtained information on genetic relationships between other goat breeds raised in the region and Hatay goat is very valuable to be registered as a national breed.
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    Öğe
    Milk-y Way: the impact of single-nucleotide polymorphisms on milk production traits in Kilis dairy goats
    (Copernicus Gesellschaft Mbh, 2023) Gunduz, Zuhal; Bicer, Osman
    This study aimed to investigate the impact of single-nucleotide polymorphisms (SNPs) on milk production traits in Kilis dairy goats by analyzing the genotypes of POU1F1, PRLR, beta -Lg, GH1, and GH2 genes and their association with lactation milk yield (LMY), lactation length (LL) and average daily milk yield (ADMY). Blood samples were collected from 227 goats, and genotyping was performed using polymerase chain reaction restriction fragment length polymorphism (PCR-RFLP). The results revealed that the frequencies of the genotypes varied among the genes. The polymorphisms were found to be significantly linked with milk production traits. These findings suggest that SNPs of POU1F1/AluI, PRLR/RsaI and beta -Lg/SacII are significantly associated with LMY and that the POU1F1-TC genotype, PRLR-TT genotype and beta -Lg-AB genotype are associated with higher LMY and ADMY. Additionally, the POU1F1-TC genotype was found to have a longer LL. However, no significant association was found between the GH1 and GH2 genotypes and LMY, LL and ADMY. Overall, this study provides valuable insights into the genetic factors influencing milk production traits in Kilis dairy goats, which can be utilized for the selection of high-yielding animals in breeding programs.