جستجوی مقالات مرتبط با کلیدواژه "villus surface" در نشریات گروه "علوم دام"

This study was conducted to evaluate the effects of algal fucoidan and probiotic Bacillus subtilison growth performance, blood metabolites and intestinal morphology in broiler chickens. A total of 250 one-day-old Ross 360 male broiler chickens were randomly distributed into 5 treatments (6 replication pens/treatment) and reared for 42 d. The 5 dietary treatments were as follow: 1) a corn-soybean meal basal diet (control treatment); 2) a basal diet supplemented with antibiotic oxytetracycline; 3) a basal diet supplemented with the prebiotic fucoidan; 4) a basal diet supplemented with a probiotic product containing Bacillus subtilis spores; and 5) a basal diet supplemented with both the prebiotic and probiotic (served as a synbiotic). Birds received antibiotic and probiotic exhibited greater body weight gain (about 5.42% and 4.80%, respectively) than control treatment. The percentage of thigh and abdominal fat in birds fed probiotic diet were lower compared to the antibiotic treatment. The use of fucoidan and probiotic resulted lower (P< 0.05) serum concentration of triglyceride than those of antibiotic treatment. Supplementing of synbiotic increased villus height and villus height to crypt depth ratio in the jejunum (P< 0.05). Present study revealed that supplementing of probiotics with fucoidan could be advised as an effective synbiotic, instead of antibiotics, to improve the performance and health of broiler chickens.

This experiment was conducted to compare the effects of multi-strain probiotic inclusion levels on performance, intestinal morphology, gut microflora and hematological changes in Salmonella typhimurium (ST) infected broiler chickens. A total of 120 day old Ross 308 broiler chickens were distributed into 20 floor pens and reared for 10 days under 5 experimental treatments including a corn-soy basal diet with no probiotic (Control), or 0.5 g (0.05%), 1 g (0.1%), 1.5 g (0.15%) and 2 g (0.2%) probiotic/kg diet. Chickens were infected orally with ST at second day of experiment. Broilers under 0.15% of probiotic had higher body weight gain compared to other treatments. Probiotic supplementation, except at 0.05%, significantly improved feed conversion ratio. The use of 0.1 and 0.15% of probiotic reduced the population of Salmonella in ileum. The lowest heterophil:lymphocyte ratio was observed in 0.15% of probiotic, although 0.1 and 0.2% of probiotic significantly reduced this ratio compared to control group. Adding 0.15% of probiotic to the basal diet increased (P .