نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه علوم دامی، دانشکده علوم دامی و صنایع غذایی، دانشگاه علوم کشاورزی و منابع طبیعی خوزستان، اهواز، ایران
2 گروه مهندسی طبیعت، دانشکده کشاورزی شیروان، دانشگاه بجنورد، بجنورد، ایران
3 گروه علوم پایه، دانشکده دامپزشکی، دانشگاه شهید چمران اهواز، اهواز، ایران.
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
the use of different additives can partially reduce the negative effects caused by NSP of cereals. Objective: The present study was conducted to investigate the effect of different additives in the diet containing barley with different particle sizes on microbial population of the cecum and the morphology of the small intestine of broiler chickens. Methods: 400 one-day-old broilers of strain Ross 308 were used in the completely randomized design with a factorial arrangement of 2x4 and with 8 treatments. Treatments included the type of additive (without additive, multi-enzyme, autolyzed yeast and autolyzed yeast with multi-enzyme) and particle size of barley (fine, 2 mm and coarse, 8 mm). Results Additives decreased the pH of the gizzard and jejunum compared to the control treatment. Autolyzed yeast with multi-enzyme increased the number of lactobacillus bacteria colonies and decreased the number of E. coli and coliform caecum bacteria colonies compared to other treatments. Autolyzed yeast with multi-enzyme reduced the viscosity of ileum digestive compared to other treatments. The digesta transit time was less in diets with additives than in diets without additives. The addition of autolyzed yeast with multienzyme and also the size of large barley particles improved the morphological characteristics of the small intestine. Conclusion: In general, it is possible to recommend the use of autolyzed yeast with multienzyme in diets containing barley, considering the stimulation and development of the beneficial intestinal bacterial population, the reduction of digestive viscosity, and the improvement of the morphological characteristics of the small intestine.
کلیدواژهها [English]