Document Type : Research Paper
Authors
1 Department of Pathobiology, Faculty of Veterinary Science, Bu-Ali Sina University, Hamedan, Iran.
2 Razi Vaccine & Serum Research Institute, Agricultural Research, Educationa and Extension Organisation (AREEO), Karaj, Iran.
3 Department of Clinical Sciences, Faculty of veterinary science, Bu Ali Sina University, Hamedan, Iran.
Abstract
The effect of Betaplus probiotic levels in the diet on growth performance and histomorphometry of Japanese quail jejunum was investigated by using 288 broiler chicks with six treatments of four replications and 12 birds per each in a completely randomized design from one to 42 days of age. Treatments included: control group (without additives); three diets containing levels of 0.5, 1 and 1.5 g/kg of Betaplus probiotic; diet with deficient in protein, and diet with deficient in protein and contained 1 g/kg of Betaplus. Feed intake, body weight and increase body weight were measured weekly and conversion factor was calculated. At 42 days of age, two birds were randomly selected from each replicate and the traits related to carcass dissection were assessed. For histomorphometrical evaluation of the intestine, the jejunum samples were collected. The utility of betaplus probiotic at level 1 g/kg improved food intake, weight gain, conversion factor and some histomorphometrical parameters of jejunum (p <0.05), In birds were feed with level of 1.5 g/kg Betaplus, the villi thickness and crypt diameter and number of the goblet cells were decreased (p <0.05). According to the results, the use of Betaplus probiotic at level 1 g/kg in the diet improves the growth performance and histological parameters of the jejunum in Japanese quail.
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