Effects of Lactobacillus-Based Probiotic on Performance, Gut Microflora, Hematology and Intestinal Morphology in Young Broiler Chickens Challenged with Salmonella Typhimurium
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...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Gorgan University of Agricultural Sciences and Natural Resources
2016-12-01
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| Series: | Poultry Science Journal |
| Subjects: | |
| Online Access: | http://psj.gau.ac.ir/article_3271_37fafb3108cb6d709b852a73c666e2d0.pdf |
| Summary: | 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 |
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| ISSN: | 2345-6604 2345-6566 |