Person: ÜSTÜNER, HAKAN
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ÜSTÜNER
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HAKAN
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Publication Growth, fattening performance, and carcass characteristics of Saanen, Turkish Hair x Saanen, and Honamli x Saanen crossbred kids(TÜBİTAK, 2020-10-01) Akbaş, Aykut Asım; Elmaz, Özkan; Sarı, Mehmet; Üstüner, Hakan; Kuleasan, Şukran; Saatcı, Mustafa; ÜSTÜNER, HAKAN; Bursa Uludağ Üniversitesi/Veteriner Fakültesi/Hayvan Bilimi Anabilim Dalı.; 0000-0002-4341-5842; AAG-9127-2021The study was carried out to investigate the possibilities of obtaining slaughtered kids using indigenous breeds in Saanen flocks, which does not require breeding. The birth weights were 3.22 kg, 3.05 kg, and 3.18 kg for the Saanen, Turkish Hair x Saanen (F-1), and Honamli x Saanen (F-1) crossbred kids, respectively. The mean live weight values of the same genotypes at the end of fattening (146th day) were determined as 25.96 kg, 27.11 kg, and 29.57 kg for the male kids, respectively. The cold carcass weights and dressing percentage (%) of the same genotypes were determined to be 10.95 kg, 12.40 kg, and 13.21 kg and 43.59%, 44.43%, and 44.48%, respectively for the male kids. M. Longissimus dorsi (MLD) cross-sectional areas were 9.42 cm(2), 9.94 cm(2), and 11.44 cm(2) for the genotypes among the examined factors, which was statistically significant (P < 0.05). It might be thought that the study was important as it was among the first studies on the use of different genotypes as a sire line on the Saanen goats. The study also focused on a rarely tried pattern of commercial crossbreeding and kid production in a time when the Saanen farms do not need to breed kids. This attempt was a new concept for Saanen rearing.Publication Association of the caprine calpastatin Msp polymorphism with growth and reproduction traits in Saanen goats(Hellenic Veterinary Medical Soc, 2021-07-01) Ardıçlı, Sena; Üstüner, Hakan; Arslan, Oğuzhan; ARDIÇLI, SENA; ÜSTÜNER, HAKAN; ARSLAN, OĞUZHAN; Bursa Uludağ Üniversitesi/Veteriner Fakültesi/Genetik Anabilim Dalı; Bursa Uludağ Üniversitesi/Veteriner Fakültesi/Zootekni Anabilim Dalı; 0000-0003-2758-5945; 0000-0002-1439-8502; O-3394-2019; GRY-9670-2022; JHO-8192-2023This study was designed to evaluate the effects of calpastatin (CAST) Mspl polymorphism on some growth and reproduction traits, including birth weight, first breeding weight, litter size, and average daily weight gain in Saanen goats. In this sense, blood samples obtained from 73 purebred female Saanen goats were used for genotyping. Genomic DNA was isolated by the phenol-chloroform method and used to determine CAST genotypes, including MM, MN, and NN, by means of the PCR-RFLP method. The population genetic parameters were estimated based on allelic distribution and the data were statistically analysed using analysis of variance (ANOVA) using a general linear model (GLM). Results revealed that N allele frequency was remarkably high (0.64) and the MM genotype was not present. The frequency of the heterozygous genotype was 59.62%. Concerning ANOVA results, significant differences were found between genotypes of the CAST locus concerning birth weight (P<0.05). In this respect, animals with the NN genotype were associated with higher birth weight means (2.85 +/- 0.29 kg) compared to heterozygous animals (2.53 +/- 0.24 kg). There was no significant association between the CAST marker and any of the remaining phenotypic traits evaluated. The present results suggest that focusing on this genomic region may be particularly useful in improving birth weight in goats which can be considered as an early indicator of post-weaning animal growth and survival.Publication Fattening performance and carcass traits of imported simmental bulls at different initial fattening age(Sivar-soc Italiana Veterinari Animali Reddito, 2020-08-01) Ustuner, Hakan; ÜSTÜNER, HAKAN; Ardicli, Sena; ARDIÇLI, SENA; Arslan, Oznur; Brav, Fahir Cankat; Bursa Uludağ Üniversitesi/Veteriner Fakültesi; 0000-0003-2758-5945; O-3394-2019; AAG-9127-2021Fattening performance is one of the most important traits in cattle breeding. These traits are closely associated with adequate initial weights and slaughter endpoints. In this context, the aim of this study was to investigate optimum initial fattening age of imported Simmental young bulls and to provide a detailed analysis of initial fattening age effects on fattening performance and carcass characteristics. Seventy five animals were purchased from a single commercial farm where they had been reared under identical production conditions and were allocated into four groups according to age and live-weight as follows: Group I (4 months of age), Group II (6 months of age), Group III (8 months of age), and Group IV (10 months of age). All animals were housed in semi-open pens and were fed ad libitum with the same appropriate diet for 12 months. The animals were slaughtered in a commercial abattoir according to standard routines and carcass traits including hot and chilled carcass weights, dressing percentage, and chiling loss were determined. Morever, performance traits including total weight gain, feed conversion rate, average daily weight gain, and dry matter intake were estimated. Results revealed that the initial fattening age of bulls showed significant effects on total weight gain and chilled carcass dressing. In this context, Group I was characterized by the highest total weight gain, whereas, Group IV had the highest values for chilled carcass dressing. During early fattening periods, first three periods, average daily weight gain was significantly different among the treatments. This study pointed out that, concerning importation, younger Simmentals with the initial fattening age of four months may be more suitable and profitable for medium-term fattening. The present results may have a potential to influence adequate management practices in Simmental farms, and moreover, the recent strategies for importation of cattle.