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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 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.