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    Effects of dietary black cumin seed (Nigella sativa L.) on performance, egg traits, egg cholesterol content and egg yolk fatty acid composition in laying hens
    (Wiley, 2009) Yalcin, Sakine; Yalcin, Suzan; Erol, Handan; Bugdayci, K. Emre; Ozsoy, Buelent; Cakir, Serkan
    BACKGROUND: The objective of this study was to determine the effects of dietary black cumin seed on performance, egg traits, egg cholesterol content and egg yolk fatty acid composition in laying hens during a 12 week period. For this purpose a total of 160 Lohmann Brown laying hens 36 weeks of age were allocated to four dietary treatments with one control group and three treatment groups. Black cumin seed (Nigella sativa L.) was used at the level of 5, 10 and 15 g kg(-1) in the diets of the first, second and third treatment groups, respectively. RESULTS: Dietary treatments did not significantly affect body weight, feed intake, egg production, egg quality characteristics and blood parameters. Diets containing 10 and 15 g kg(-1) black cumin seed increased egg weight (P < 0.01), improved feed efficiency (P < 0.01) and decreased egg yolk cholesterol, saturated fatty acids (% of total fatty acid methyl esters) and the ratio of saturated to unsaturated fatty acids (P < 0.05) compared to the diet of control group. CONCLUSION: Dietary black cumin seed at the level of 10 and 15 g kg(-1) had beneficial effects on egg weight, feed efficiency, egg cholesterol content and egg yolk fatty acid composition. Therefore it can be used at the level of 10 and 15 g kg(-1) in the diets of laying hens. (C) 2009 Society of Chemical Industry
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    Effects of glycerol on performance, egg traits, some blood parameters and antibody production to SRBC of laying hens
    (Elsevier Science Bv, 2010) Yalcin, Sakine; Erol, Handan; Ozsoy, Bulent; Onbasilar, Ilyas; Yalcin, Suzan; Uner, Aykut
    This study was designed to investigate the effects of the usage of glycerol from biodiesel production from soybean oil in laying hen diets on laying performance, egg traits, heterophils to lymphocytes ratio (H/L), sonic blood parameters and antibody production to SRBC. A total of 180 Lohmann Brown laying hens 39 weeks of age were allocated to four dietary treatments with one control group and three treatment groups and fed for 16 weeks. Each group was divided into five replicates as subgroups, comprising of 9 hens each. Glycerol was used at the level of 2.5, 5 and 7.5% in the diets of the first, second and third treatment groups, respectively. The diets were formulated to be isocaloric and isonitrogenous. Dietary treatments did not significantly affect body weight, egg production, egg weight, feed efficiency, mortality, egg albumen index, egg yolk index and egg Haugh unit, yolk weight percentage, exterior egg quality characteristics, excreta moisture, H/L. ratio, blood parameters and antibody production to SRBC. Hens fed diets with 7.5% glycerol consumed significantly less feed than those of the other groups. Egg yolk cholesterol concentration was significantly higher for hens fed diets with 5 and 7.5% glycerol as compared to those of the other groups (P < 0.01). The ratio of monounsaturated fatty acids (MUFA) to saturated fatty acids (SFA) in eggs was decreased (P < 0.01) with dietary glycerol supplementation. The inclusion of glycerol had no significant effects on blood parameters, H/L ratio, antibody titers to SRBC and excreta moisture. It is concluded that glycerol can be used at 2.5% in the diets of laying hens without adverse effects on the measured parameters. Dietary glycerol at the levels of 5 and 7.5% increased egg yolk cholesterol and decreased the ratio of MUFA/SFA without affecting performance, other egg traits, immune response, H/L ratio, blood parameters and excreta moisture. (C) 2010 Elsevier B.V. All rights reserved.
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    Effects of Kefir on Blood Parameters and Intestinal Microflora in Rats: An Experimental Study
    (Kafkas Univ, Veteriner Fakultesi Dergisi, 2021) Ozsoy, Bulent; Cantekin, Zafer; Yalcin, Sakine; Bayraktar, Hamdullah Suphi
    A probiotic product of kefir is widely consumed by human beings. The purpose of this research was to investigate the effects of kefir on blood parameters and intestinal flora in rats. A total of 24 female rats were used in this study. During 35 days of experimental period, rats were fed with a commercial diet and water was provided ad libitum. Kefir was given at the levels of 10 mL/kg, 20 mL/kg and 30 mUkg with oral gavage to the first, second and third treatment groups, respectively. Kefir was not given to the control group. The number of yeast was found to be 1.65x10(8) and the number of lactobacilli was found to be 4x10(8) in kefir. At the end of the experiment, blood samples were taken from all rats. Blood plasma parameters and were investigated. The intestinal microflora was investigated by classical colony counting method. No differences were observed among the groups in total protein, albumin, uric acids, SGPT, SGOT, alkaline phosphatase and phosphorus in blood plasma. The plasma triglyceride and cholesterol levels in the second and third groups were lower than control group (P<0.05). No differences were observed in the intestinal pH levels among groups. Although total bacteria number of intestinal microflora was not different in groups, the number of Enterobactericeae and coliform bacteria in the third group was lower than the other groups (P<0.001). The number of Lactobacilli and the yeast level in the intestinal contents were increased by the usage of kefir (P<0.001). It was concluded that positive effects of the kefir were observed in intestinal microflora with increasing the number of beneficial bacteria and decreasing harmful bacteria and therefore kefir has a positive effect on the health of the animals.
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    Effects of L-carnitine supplementation to the diets containing different levels of energy on performance and some blood parameters of quails
    (Ankara Univ Press, 2007) Yalcin, Sakine; Bugdayci, K. Emre; Oezsoy, Buelent; Erol, Handan
    This experiment was carried out to determine the effects of the usage of L-carnitine in diets with different levels of energy on some productive characteristics and blood parameters of Japanese quail. A total of 204 quail chicks aged one week (Coturnix coturnix Japonica) were used. They were divided into four groups each containing 51 quail chicks. Diets having normal (3000 kcal/kg) and low (2700 kcal/kg) metabolizable energy level were supplemented with 0 and 100 mg/kg L-carnitine. Diets were formulated to be isonitrogenic. The experimental period lasted five weeks. L-carnitine supplementation to the diets having normal energy level did not affect the live weight at the end of the experiment, total live weight gain, feed intake per one kg live weight gain and carcass yield but increased total feed intake (p<0.01) and decreased serum cholesterol level (p<0.01). The values of live weight at the end of the experiment were increased (p<0.01) and feed intake per one kg live weight gain (p<0.01), the serum levels of cholesterol (p<0.01) and triglyceride (p<0.05) were decreased by L-carnitine supplementation to the low energy diets. As a result, L-carnitine supplementation to the diets of low energy level have positive effects on the performance and decrease the levels of serum cholesterol and triglycerides of Japanese quails.