Abstract. In this study, we aimed to determine the slaughter-carcass characteristics, meat quality, and fatty acid composition in lambs raised under intensive and extensive conditions. The animal material consisted of 30 Norduz male lambs, with an average age of 171 days. The lambs were divided into two groups: concentrate-fed lambs (CO) and pasture-fed lambs (PS). The results showed that the CO lambs had heavier carcasses (p< 0.001), a higher dressing percentage (p< 0.001), and higher intramuscular fat (p< 0.01) than the PS lambs. It was determined that the longissimus thoracis muscle of the CO lambs had a lower ultimate pH and higher L * and water-holding capacity than the PS lambs. In this study, intramuscular fat (longissimus thoracis, semimembranosus, triceps brachii), subcutaneous and tail fat samples were used to evaluate the effect of feeding system on fatty acid composition. The polyunsaturated fatty acid to saturated fatty acid ratio (PUFA / SFA) of intramuscular fat was found to be significantly higher in the CO group than in the PS lambs, while similar subcutaneous and tail fat results were found in both groups. Moreover, the PS lambs had a lower n6 / n3 ratio and higher percentage of omega-3 than the CO lambs in all tissues studied (p< 0.05). Overall, the CO lambs have heavier and fattier carcasses with better meat quality traits than the PS lambs. However, the effects of feeding system have varying results based on the fatty acid composition of different types of fat deposits.

Total number of 104 canned soft drinks collected from several regions in Turkey were analysed. The purpose of this study was to determine the levels of heavy metals in the drinks commonly consumed in Turkey. Quantitative determination of heavy metals: arsenic, copper, zinc, cadmium, and lead in all samples was carried out by ICP-OES (Inductively Coupled Plasma-Optical Emission Spectrometry) method. The mean levels (&plusmn; SE) of arsenic, copper, zinc, cadmium, and lead were found to be 0.037 &plusmn; 0.002 mg/kg, 0.070 &plusmn; 0.009 mg/kg, 0.143 &plusmn; 0.012 mg/kg, 0.005 &plusmn; 0.0003 mg/kg, and 0.029 &plusmn; 0.002 mg/kg, respectively, in soft drinks. Our data revealed that arsenic, copper, zinc, cadmium, and lead mean levels found in all soft drinks, collected from several regions in Turkey, were within the Turkish Food Codex (TFC) values.

This is the first study and report in which some ewe reproductive and lamb growth performances of Zom sheep were investigated and described in Turkey. The research was carried out on three different flocks randomly chosen among the Zom sheep flocks in the district of Karacadağ surrounded by Diyarbakır, Şanlıurfa and Mardin provinces, and lasted for two years, 2010 and 2011. The data consisted of 242 and 254 heads of lamb born from 226 and 214 heads of ewe in 2010 and 2011, respectively. Lambing rate (LR), twinning rate (TW), fecundity (FEC) and litter size (LITS) were found as 94%, 17%, 1.09 and 1.17 on average, respectively. There was no significant difference among flocks within years or among years within flocks in terms of ewe reproductive performance, except for the flock 2 in terms of TW. Average means of the birth weight (BWT), weaning weight (WWT) at 90 th day and 6 th month live weight (SMLW) were 4.00 kg and 22.06 kg, 36.11 kg, respectively. The effects of age of dam, type of birth and sex of lambs were significant on BWT, WWT and SMLW (P<0.05). Besides the WWT was also significantly affected by the year (P<0.05), every 1 kg increase in BWT caused 2.02±0.281 kg increase on average in WWT of lambs (P<0.01). In addition, it was observed that the havier lambs at birth were havier in terms of SMLW (P<0.01). The average daily weight gain (ADWG1) and survival rate (SR) of lambs at weaning were 200 g/day and 90%, respectively. Keywords: Zom sheep, Reproductive performance, Lamb growth, Lamb survival Karacadağ Yöresinde Yetiştirilen Zom Koyunlarının Üreme Performansı ve Kuzularının Büyüme Özellikleri ÖzetBu araştırma, Zom koyunlarında bazı döl verimi ve kuzularda büyüme özelliklerini araştıran ve tanımlayan Türkiye'deki ilk çalışmadır. Araştırma, 2010 ve 2011 yıllarında, Diyarbakır, Şanlıurfa ve Mardin şehirlerinin çevrelediği Karacadağ bölgesinde Zom koyunu yetiştiriciliği yapan işletmeler arasından rastgele belirlenen 3 sürüde yürütülmüştür. Veriler, 2010 ve 2011 yıllarında doğum yapan sırasıyla 226 ve 214 baş koyun ve bunlardan doğan 242 ve 254 baş kuzularadan elde edilmiştir. Kuzulama oranı (KO), ikizlik oranı (İO), koçaltı koyun başına doğan kuzu sayısı (KKKS) ve doğuran koyun başına kuzu sayısı (DKKS) ortalamaları sırasıyla %94, %17, 1.09 ve 1.17 olarak tespit edilmiştir. İkinci sürüdeki İO hariç, koyun üreme performansı bakımından değişik yıllarda sürü içinde ya da aynı yılda sürüler arasında farklılık gözlemlenmemiştir. Ortalama doğum ağırlığı (DA), sütten kesim ağırlığı (SKA) ve altıncı ay canlı ağırlık (AACA) ortalaması sırasıyla 4.00, 22.06 ve 36.11 kg olarak tespit edilmiştir. DA, SKA ve AACA, ana yaşı, doğum tipi ve cinsiyet faktörlerinden önemli derecede etkilenmişlerdir (P<0.05). SKA üzerine yıl faktörünün de önemli etkisi tespit edilmiş (P<0.05), bunun yanında, DA'da meydana gelen her 1 kg'lık artışa karşılık SKA'da ortalama olarak 2.02±0.281 kg'lık bir artışın meydana geldiği gözlenmiştir (P<0.01). Buna ek olarak, doğumda daha ağır olan kuzuların AACA bakımından da daha ağır oldukları tespit e...

The study was conducted to determine the effect of feeding systems on fattening performance, slaughter, and carcass characteristics of male Norduz kids. In the study, 20 male Norduz kids weaned at 2.5 months of age were divided into two groups after weaning. The first group was reared under semi-intensive conditions (SI) on a mixture of pasture and concentrate, and the second group was reared under extensive conditions (E) on pasture only. SI group had higher final weight (35.30 kg versus 32.81 kg), daily weight gain (153.10 g versus 132.14 g), and warm carcass yield (44.84% versus 46.55%) compared to the E group although there were no significant differences. Body organs, carcass parts, prime cuts, and chemical composition of the chop area did not also differ in two groups significantly. As a conclusion, this study showed that semi-intensive feeding systems improved kid fattening performance and carcass characteristics.

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