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۱Comparison of different levels of zeolite on serum characteristics, gut pH,apparent digestibility of crude protein and performance of broiler chickens
اطلاعات انتشار: همایش بین المللی ژئولیت ایران، سال
تعداد صفحات: ۴
One expriment with 375 one–day–old Ross male broiler chicks was conducted to determine the effects of
zeolite on the broiler’s performance. Three experimental diets: control, zeolite 2.5 percent and zeolite 5
percent were tested in a completely randomized design with 5 replicates and 25 chicks per replicate. All diets
were formulated to meet NRC (1994) requirements. During the experiment feed consumption (FC), weight
gain (WG) and feed conversion ratio (FCR) were measured weekly. At 21 and 42 days of age, two chicks
per replicate were slaughtered to determine gut pH and ileal apparent digestibility of crude protein (AD of
CP) respectively. Also, serum parameters determined at 42 days of age. The results indicated that adding 2.5
percent zeolite to diet, WG was increased (P<0.05), But there were no significant differences (P>0.05) in FC
and FCR, among treatments. Also, there were no significant differences in serum calcium and phosphorus
levels at 42 days of age (P>0.05). The addition of 2.5 and 5 percent zeolite, increased AD of CP (P<0.05).
Also, adding 2.5 percent zeolite increased duodenal pH at 21 days of age (P<0.05).<\div>

۲Broiler chicken growth performance, ileal microbial population and serum enzyme activity affected by dietary source of non–starch polysaccharides as supplemented with or without enzymes
اطلاعات انتشار: Global Journal of Animal Scientific Research، دوم،شماره۳، ۲۰۱۴، سال
تعداد صفحات: ۶
An experiment was conducted to evaluate the effect of different dietary source of Non–starch polysaccharides with or without enzymes on growth performance, ileal microbial population, and serum enzyme activity of broiler chickens. A total number of 625 unsexed broiler chicken (Ross–308) were randomly assigned to 5 treatments with 5 replicates and 25 birds per each unit, using a CRD statistical design. Treatments were included control, wheat (W), wheat+ enzyme (WE), barley (B), and barley+ enzyme (BE). Feed intake and body weight gain were significantly increased, as well as feed conversion ratio decreased by diets supplemented with enzymes rather diets without enzymes (P0.05). The inclusion of W and B in diets led to significantly increased the total intestinal bacteria or gram negative and coliform bacteria as well as decreased the\number of lactic acid bacteria at 42 days of age (P0.05). Serum enzyme activity of amylase and lipase were significantly increased after feeding chickens by diets contained W and B rather control or WE and BE at 42 days of age (P0.05). The results of present study have shown that supplementation of W and B with enzymes completely restored the situation and neutralized the negative effects of W and B on growth performance, intestinal microbial population and serum enzyme activity of broiler chickens.

۳Different Dietary Source of Non–Starch Polysaccharides Supplemented with Enzymes Affected Growth and Carcass Traits, Blood Parameters and Gut Physicochemical Properties of Broilers
نویسنده(ها): ، ،
اطلاعات انتشار: Global Journal of Animal Scientific Research، سوم،شماره۲، ۲۰۱۵، سال
تعداد صفحات: ۷
An experiment was conducted to evaluate the effect of different dietary source of Non–starch polysaccharides supplemented with enzymes on growth, carcass and physiological characteristics of broilers. A total number of 625 unsexed broiler chicken (Ross 308) were randomly assigned to 5 treatments, 5 replicates and 25 birds per each unit, using a CRD statistical design. Treatments were included control, wheat (W), wheat+ enzyme (WE), barley (B), and barley+ enzyme (BE). Total feed intake and body weight gain were significantly increased, but feed conversion ratio decreased by diets supplemented with enzymes rather diets without enzymes (P0.05). The inclusion of W and B in diets led to significantly decreased in carcass yield and the percentage of breast, leg, fat pad, and liver compare to the control (P0.05). The percentage of pancreas was higher in W and B diets than control or enzyme supplemented diets (P0.05). Serum levels of glucose (GLU), triglyceride (TG), and cholesterol (CHO) significantly decreased in diet contained W and B (P0.05). Digesta viscosity significantly increased, but pH decreased after feeding the chickens by W and B diets rather control (P0.05). The results of present study have shown that supplementation of W and B with multi–enzymes completely restored the situation and neutralized the negative effects of W and B on growth and carcass traits, blood parameters and gut physicochemical properties of broiler chickens.
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