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Öğe 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, SerkanBACKGROUND: 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 IndustryÖğe The effects of dietary supplementation of L-carnitine and humic substances on performance, egg traits and blood parameters in laying hens(Asian-Australasian Association of Animal Production Societies, 2006) Yalçin, Sakine; Ergün, Ahmet; Özsoy, Bülent; Yalçin, Suzan; Erol, Handan; Onbaşilar, IlyasThis experiment was carried out to determine the effects of supplementation of L-carnitine and humic substances alone or in combination in laying hen diets on performance, egg traits and blood parameters. A total of 180 IGH type brown laying hens aged 22 weeks were employed in a completely randomized block design with one control group and three treatment groups. Each group was divided into five replicates as subgroups, each comprising 9 hens. The diets of the first, second and third treatment groups were supplemented with 0.1 g/kg L-carnitine, 1.5 g/kg humic substances (Farmagülator® Dry Plus) and 0.1 g/kg L-carnitine+1.5 g/kg humic substances, respectively. The experimental period lasted 18 weeks. Feeding supplemental carnitine, humic substances or carnitine+humic substances resulted in increases in body weight gain (p<0.05). Dietary treatments did not significantly affect daily feed intake, daily metabolizable energy intake, egg production, egg weight, feed efficiency, mortality, egg shape index, egg breaking strength, egg shell thickness, egg albumen index, egg yolk index, egg Haugh unit and the percentages of egg shell, albumen and yolk. Supplementation of humic substances reduced egg yolk cholesterol as mg per g yolk and mg per yolk (p<0.05). Blood serum parameters were not affected by the supplementation of carnitine, humic substances or carnitine+humic substances. The results in this study demonstrated that humic substances supplementation reduced egg cholesterol without adverse effects on performance, egg traits and blood parameters of laying hens. It was concluded that the usage of L-carnitine alone or in combination with humic substances in diets had no beneficial effects in laying hens.Öğe 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, AykutThis 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.Öğe 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, HandanThis 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.Öğe Farklı enerji düzeylerindeki rasyonlara L-karnitin ilavesinin bıldırcınlarda performans ve bazı kan parametreleri üzerine etkisi(2007) Yalçın, Sakine; Buğdaycı, Kadir Emre; Özsoy, Bülent; Erol, HandanBu araştırma, farklı enerji düzeylerindeki rasyonlarda L-karnitin kullanımının Japon bıldırcınlarında performans özellikleri ve bazı kan parametreleri üzerine etkilerini belirlemek amacıyla yapılmıştır. Denemede toplam 204 adet bir haftalık Japon bıldırcın civcivi (Coturnix coturnix Japonica) kullanılmıştır. Her biri 51 adet bıldırcın civcivi kapsayan 4 grup düzenlenmiştir. Normal (3000 kcal/kg) ve düşük (2700 kcal/kg) metabolize olabilir enerji düzeyine sahip karma yemlere 0 ve 100 mg/kg L-karnitin ilave edilmiş ve ham protein düzeyleri eşit olacak şekilde düzenlenmiştir. Deneme 5 hafta sürdürülmüştür. Normal enerji düzeyine sahip rasyona L-karnitin ilavesi ile bıldırcınlarda deneme sonu canlı ağırlık, toplam canlı ağırlık artışı, bir kg canlı ağırlık artışı için tüketilen yem miktarı ve karkas randımanı etkilenmemiş, fakat toplam yem tüketimi artmış (p<0.01), serum kolesterol düzeyi azalmıştır (p<0.01). Düşük enerjili rasyona L-karnitin ilavesinin ise bıldırcınlarda deneme sonu canlı ağırlığı arttırdığı (p<0.01), bir kg canlı ağırlık artışı için tüketilen yem miktarı (p<0.01), serum kolesterol (p<0.01) ve trigliserit (p<0.05) düzeylerini azalttığı bulunmuştur. Sonuç olarak düşük enerji düzeylerindeki rasyonlara L-karnitin ilavesinin Japon bıldırcınlarında performansı olumlu yönde etkilediği, serum kolesterol ve trigliserit düzeylerini düşürdüğü gözlenmiştir.
