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标题：Effects of supplementation of probiotics instead of antibiotics to broiler diet on growth performance, nutrient retention, and cecal microbiology
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作者：Md. Mustafijur Rahman ; Mohammad Mehedi Hasan Khan ; Md. Matiar Rahman Howlader 等
期刊名称：Journal of Advanced Veterinary and Animal Research
印刷版ISSN：2311-7710
出版年度：2021
卷号：8
期号：4
页码：534-539
DOI：10.5455/javar.2021.h543
语种：English
出版社：Bangladesh Agricultural University, Faculty of Veterinary Science
摘要：Objectives: The research was carried out on broilers to determine the efficacy of probiotics ( Bacillus subtilis and Saccharomyces boulardii combined) supplementation on growth performances, nutrient retention (metabolizable energy, dry matter, and crude protein), and cecal microbiology ( Bifidobacteriaspp., Clostridiumspp., and coliforms). Materials and Methods: A total of 160 broiler chicks (day-old) were selected and differentiated randomly into 4 groups (T 0, T 1, T 2, and T 3) (40 × 4) comprising 40 birds in every single group. The control group (T 0) was fed commercial broiler feed only and the other three groups, referred to as treatment groups (T 1, T 2, and T 3), were treated with 1 gm ciprofloxacin, 1 gm probiotic, and 1 gm probiotic plus 0.5 gm enzyme, respectively, in per liter of fresh dietary water 8 h daily for 7 days in each phase. Experimental trials were divided into 2 phases, the starter phase from day 0 to 21 and the finisher phase from day 22 to 35. Results: Bodyweight gain and nutrient retention in experimental broiler birds in treatment groups were significantly ( p< 0.05) higher than the control group. Overall body weight gain and nutrient retention of broiler chicks in treatment groups T 2and T 3 were better than T 1. From day 22 to 35, cecal Clostridiumand coliform bacterial load counts were significantly lower p< 0.01, p< 0.05, and p< 0.01, respectively, in T 1, T 2, and T 3treatments than T 0. Overall, Clostridiumand coliform bacterial counts in the birds of treatment group T 2 were significantly lower ( p< 0.05) than T 0. Conclusion: The probiotics, in addition to enzyme supplementation, had suitable influence effects on growth performance of broilers, birds retention of nutrient, and microfloral count in birds’ cecum.
关键词：Probiotics; Bacillus subtilis; Saccharomyces boulardii; growth performance; nutrient retention; cecal microbiology