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    Effects of dietary sepiolite on performance, egg quality and some blood parameters in laying hens
    (ANKARA UNIV PRESS, 2016) Yalcin, Sakine; Eser, Handan; Onbasilar, Ilyas; Yalcin, Suzan; Karakas Oguz, Fatma
    The aim of this study was to determine the effects of dietary sepiolite on performance, egg quality, egg yolk cholesterol content and some blood parameters of laying hens during 22 weeks period. For this purpose a total of 135 Lohmann Brown laying hens, 38 weeks of age, were allocated to one control group and two treatment groups. Sepiolite was used at the level of 0, 0.5 and 1% for the diets of control group and the first and second treatment groups, respectively. Dietary sepiolite supplementation did not significantly affect feed intake, egg production, egg weight and feed conversion ratio. The values of egg breaking strength (p<0.01) and egg shell thickness (p<0.05) were increased, egg yolk cholesterol was decreased (p<0.05) by the usage of 1% sepiolite in the diet. Dietary treatments did not significantly affect egg shape index, egg albumen height, egg albumen index, egg yolk index and egg Haugh unit. Dietary sepiolite at 1% reduced cholesterol and triglyceride in serum (p<0.05) and increased total protein in serum (p<0.01). It was concluded that dietary supplementation of 1% sepiolite was effective feed additive in layer feeding due to the reduction in egg yolk cholesterol and improvement in egg shell quality.
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    Effects of dietary yeast cell wall on performance, egg quality and humoral immune response in laying hens
    (ANKARA UNIV PRESS, 2014) Yalcin, Sakine; Yalcin, Suzan; Onbasilar, Ilyas; Eser, Handan; Sahin, Aydin
    The objective of this study was to determine the effects of dietary yeast cell wall (YCW) on performance, egg quality, some blood parameters and humoral immune response of laying hens during 26 wks period. For this purpose a total of 225 Hyline Brown laying hens, 39 wks of age, were allocated to one control group and four treatment groups. Basal diet was supplemented with YCW derived from bakers yeast Saccharomyces cerevisiae (InteMOS) at the level of 1, 2, 3 and 4 g/kg in the diets of the first, second, third and fourth treatment groups, respectively. Dietary treatments did not significantly affect body weight, feed intake, egg production, egg weight, feed conversion, and egg internal and external quality characteristics. YCW supplementation at the level of 1 and 2 g/kg decreased egg yolk cholesterol level as mg per g yolk (P < 0.05). Blood serum levels of cholesterol and triglyceride were decreased with the dietary inclusion of YCW at the level of 2, 3 and 4 g/kg (P < 0.01). Dietary YCW supplementation increased antibody titres to SRBC (P < 0.01). As a result dietary YCW at the level of 1 and 2 g/kg had beneficial effects in the production of low cholesterol eggs and improvement in humoral immunity response.
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    Effects of grit supplementation to diets containing maize and barley as cereal grains on performance and slaughter characteristics in broilers
    (KAFKAS UNIV, VETERINER FAKULTESI DERGISI, 2019) Eser, Handan; Yalcin, Sakine; Onbasilar, Ilyas; Burcak, Ender; Yalcin, Suzan
    The aim of this study was to determine the effects of grit supplementation to the diets containing maize and barley as cereal grains on performance and slaughter characteristics in broilers. In the experiment, a total of 160 Ross 308 male broiler chicks were allocated to 2 experimental groups with 4 replicate pens containing 20 birds per each for 5 weeks of experimental period. Granite grit was added at the level of 0 and 0.8% to the basal diets containing barley and maize as cereal grains for control and treatment groups, respectively. Granite grit supplementation had no significant effect on final body weight and body weight gain. Feed intake during the experiment was significantly reduced by grit supplementation (P<0.05). However, no significant differences were observed with the feed conversion ratio. Granite grit supplementation to the diets of broilers increased the relative weight of gizzard (P=0.001) and decreased the relative weight of abdominal fat (P <0.05). Dietary treatments did not affect blood serum total cholesterol and triglyceride. In conclusion, granite grit supplementation might be used in broiler nutrition due to having increment in the relative weight of gizzard and reduction in relative weight of abdominal fat.