TY - JOUR T1 - Effect of Low-Level Administration of Aflatoxin B1 into Diet on Performance and Activity of Some Blood Enzymes in Broiler Chickens TT - اثر افزودن سطوح پایین آفلاتوکسین B1 در جیره بر عملکرد و میزان فعالیت آنزیم‌های خون‏ در جوجه‌های گوشتی JF - JSTNAR JO - JSTNAR VL - 11 IS - 1 UR - http://jstnar.iut.ac.ir/article-1-675-en.html Y1 - 2007 SP - 443 EP - 450 KW - Aflatoxin B1 KW - Performance KW - Blood enzymes KW - Internal organ weights KW - Broiler. N2 - A feeding trail was conducted to evaluate the effects of diets contaminated with Aflatoxin B1 (AFB1) on the performance and blood enzymes of broiler chickens. In a randomized complete-block design with 4 blocks and 4 treatments, 112 day-old male broiler chicks were divided into 16 groups, 7 chicks per. Treatments consisted of three levels of AFB1 in starter diet (0.4, 0.8, and 1.2 ppm) along with a control group (no AFB1). Feed intake and body weight gain were recorded on a weekly basis. On days 7, 14, 21, and 28, one bird from each replicate was weighed, and killed to collect the blood samples, and to weigh its proventriculus, gizzard, duodenum and pancreas, heart, liver, spleen, bursa of fabricius, and brain. Feeding AFB1 significantly decreased feed intake and body weight gain and increased relative weight of liver (p M3 ER -