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Öğe Carcass Yield, Non-Carcass Parts, Internal Organs and Meat Quality Characteristics of Karayaka Male Lambs with Different Birth Weight Fed Free-Choice Feeding(UNIV KEBANGSAAN MALAYSIA, 2017) Yildirim, Arda; Ulutas, Zafer; Ocak, Nuh; Kaptan, MuhammetIn order to investigate the changes in meat quality characteristics and some serum metabolites as well as carcass yield, non-carcass parts, internal organs of lambs as influenced by birth weight (BtW) and feeding system (FS), 28 Karayaka male lambs (150 days of age) obtained from four comparable groups that consisted of seven replicates according to a 2 x 2 factorial arrangement for 2 BtW (low, 4.1 perpendicular to 0.06 kg and high, 5.0 perpendicular to 0.09 kg) and 2 FS (total mixed ration, TMR and free choice feeding, FCF) were used. After weaning (90 days of age), lambs with low BtW and high BtW were fed individually a TMR ad libitum or fed on the same ingredients (FCF) as that of TMR. The TMR was consisted of 80% of a compound feed and 20% of roughage based on a dry matter basis (140 g crude protein and 10.7 MEMJ/kg). The carcass weight and yield of lambs were not affected by the BtW, FS and BtWxFS interaction. The slaughter body weight, cold carcass weight and yield of FCF-fed lambs were higher than those of TMR-fed animals. The pH(45) and shear force of semitendinosus muscle decreased and increased by the FCF systems, respectively. These results showed that BtW of lambs did not affect the studied parameter and that feeding system created more differences in terms of some parameters due to the fact that the FCF lead to improvement in carcass and some meat quality traits.Öğe Effects of omega-3 and omega-6 fatty acids on some reproductive parameters in ewes(Sivar-Soc Italiana Veterinari Animali Reddito, 2020) Soydan, Ercan; Kuran, Mehmet; Ocak, Nuh; Yildiz, Sedat; Ulutas, Zafern-6 and n-3 fatty acid families act as nutraceuticals to complement the sequential processes of follicle and embryo development. However, there is a lack of information on effect of dietary supplementation of n-6 and n-3 fatty acids on different reproductive events in the sheep. Accordingly, in this study, the effect of supplementation of n-6 PUFA rich SoyPreme (SP) or n-3 PUFA rich Flaxtech (FT) on plasma hormone concentrations and some ovarian activity in the sheep were studied. Following the first detected estrus, a total of 44 ewes were allocated into either bazal diet (C, n = 22) or SP (n = 22) treatments until next estrus (pre-mating). At the second estrus, the ewes were mated and again randomly allocated to either the C or FT allowance until day 15 (post-mating; mating = day 0). Hence, there were four nutrition treatments; CC (n = 11), SPC (n = 11), SPFT (n = 11) and CFT (n = 11). Blood samples were collected to monitor plasma hormon levels. Ewes were slaughtered on 16th day after mating, and the numbers and weights of corpora lutea (CL) and follicles were recorded. Plasma progesterone (P<0.05) and PGFM (P<0.01) concentrations including basal and peak PGFM in the SP ewes during pre-mating period were higher than those of the C ewes. The number of CL were higher in the SPFT ewes compared to the CC and SPC ewes (P<0.05). While the number of small follicules in the SPC, CFT and SPFT ewes were lower than those of CC, large follicles in the SPC and CFT ewes were lower than those of CC (P<0.05). It was concluded that short-term (15-17 days) changes in dietary n-6 and n-3 supplementation can have a beneficial effect on plazma hormon consentration and ovarian activity during pre-mating and post-maing, respectively, in ewes.Öğe Some Gastrointestinal Tract Characteristics of Karayaka Ram Lambs Slaughtered at Different Weights(HINDAWI PUBLISHING CORPORATION, 2014) Yildirim, Arda; Aksoy, Yuksel; Ocak, Nuh; Ulutas, ZaferThirty-one Karayaka ram lambs were slaughtered at different body weights (30 (n = 7), 35 (n = 6), 40 (n = 7), 45 (n = 6), and 50 (n = 5) kg of body weight at fast) to evaluate the growth of their gastrointestinal tract (GIT) characteristics, to determine the relationship among slaughter body weight (SBW) and empty body weight (EBW), whole GIT and segments, and the influence of slaughter weight on the pH of rumen, jejunum, and cecal contents. The effects of the SBW on GIT weight (P < 0.05), stomach (P < 0.001), and intestine (P < 0.05), the body length (P < 0.001) and caecum (P < 0.05), and the relative weights of GIT(P < 0.05), stomach (P < 0.001), and intestine (P < 0.001) were linear whereas that for the length of intestine were quadratic. The effect of SBW were quadratic (P < 0.05) on ratios of stomach to GIT weight and intestine length to intestine weight and rumen pH while, for the intestine to GIT weight ratio (P < 0.001) and caecum pH (P < 0.05), this effect was linear. The results indicated that for all parameters studied, with the exception of intestinal length and cecal pH, linear relationships were observed with SBW indicating steady growth rates for these tissues.