Browsing by Author "Koyuncu, Mehmet Ali"
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Item Effect of castration on growth and carcass traits in hair goat kids under a semi-intensive system in the south-Marmara region of Turkey(Elsevier, 2007-09) Koyuncu, Mehmet Ali; Duru, Serdar; Uzun, Şebnem Kara; Öziş, Şeniz; Tuncel, Erdoğan; Uludağ Üniversitesi/Ziraat Fakültesi/Hayvan Bilimleri Bölümü.; 0000-0001-5243-4458; I-9517-2017; 16156692300; 7003939054; 15064551600; 8622951900; 7006929824The effect of castration on growth and carcass composition of Turkish hair kids was studied from weaning at 160-216 days (56 days total). Average daily weight gain did not differ between intact males and castrates (102 and 77 g, respectively). Dressing percentage based on full weight and empty body weight was lower (P < 0.01) for intact males than castrates. Castration had no significant effect on percentage contributions to the whole carcass of priminal cuts, excluding the long leg and ribs. Castration did not affect tissue distribution in the carcass except for intermuscular fat. It was concluded that castration on hair kids of Turkey improves carcass value by increasing dressing percentage, eye muscle area and intermuscular fat.Item Effect of different dietary energy levels on the reproductive performance of Kivircik sheep under a semi-intensive system in the South-Marmara region of Turkey(Kielanowski Inst Animal Physiology Nutrition, 2009) Koyuncu, Mehmet Ali; Canbolat, Önder; Uludağ Üniversitesi/Ziraat Fakültesi/Hayvan Bilimleri Bölümü.; 16156692300; 7004338636The objective of the study was to determine the effects of four dietary energy levels (L(1) - 10.3, L(2) - 11.0, L(3) - 11.6 and L(4) - 12.2 MJ ME per kg DM) on oestrus synchronization and fertility in Kivircik ewes. Eighty Kivircik ewes were randomly allocated in equal numbers to the four dietary energy treatments. The groups were treated with intra vaginal sponges containing 40 mg FGA (fluorogestone acetate) for a period of 14 days and 500 IU pregnant mare serum gonadotropin was injected intramuscularly after sponge withdrawal. The proportion of ewes exhibiting overt oestrus within 96 h after the injection was significantly lower (P<0.05) in the L(1) and L(2) eves (86 and 89 %) than in those on the L(3) (100%) and L(4) (100%) treatments, respectively. Mean litter size and fecundity were higher (P<0.05) in the L(3) (1.95) and L(4) (2.05) compared with the L(1) (1.45 and 1.25) and L(2) (1.63 and 1.55) ewes. It is concluded that short-term (21 days) in the level of dietary energy supplementation pre-mating can have a beneficial effect on reproductive performance in ewes.Item Effect of selenium-vitamin E injections of ewes on reproduction and growth of their lambs(South African Journal of Animal Sciences, 2007-11-28) Koyuncu, Mehmet Ali; Yerlikaya, Hümeyra; Uludağ Üniversitesi/Ziraat Fakültesi/Bahçe Bitkileri Bölümü.; 16156692300; 8622952000The experiment was conducted on 90 Karacabey Merino ewes divided into three groups. The first group of ewes was treated with 5 mL 0.1% sodium selenate, the second with 5 mL 0.1% sodium selenate and 250 mg vitamin E, while the third one was a control group. The effect of intra-muscular injection of selenium (Se) and Se plus vitamin E on oestrus, fertility, prolificacy, number of lambs reared the weight of lambs at birth and the live weight gain for 60 days was investigated. The injections of Se plus vitamin E significantly increased the incidence of oestrus, fertility and prolificacy in ewes, lamb body weight at day 60 and daily weight gain of ewes for 60 days postpartum compared with the control group.Item Growth performance of Karacabey Merino and Kivircik lambs under semi-intensive management in Turkey(Elsevier, 2009-05) Koyuncu, Mehmet Ali; Uzun, Şebnem Kara; Uludağ Üniversitesi/Ziraat Fakültesi/Hayvan Bilimleri Bölümü.; 16156692300; 15064551600Growth performances of 202 Kivircik (K) and Karacabey Merino (KM) lambs reared under semi-intensive management in Turkey were evaluated. The aim of this study was to compare the performance of K and KM lambs in terms of weights at birth and at 30-day intervals from birth to 150 days of age and of average daily gain between these intervals. Data were collected in 2005, and analyzed by GLM procedures of SAS. The effects of genotype, type of birth, sex of lamb, linear regression of lambs' age, and dam Postpartum body weights were significant. Sex variation became unimportant as lambs grew older. Male lambs were heavier than females at birth and at all ages. Lambs born to older dams were heavier than those born to younger dams at all ages. Average daily weight gains during the growth period were significantly affected by genotype, sex, type of birth and age of dam.