Effects of Lactobacillus on Growth Performance, Digestive Enzyme Activities and Nutrient Apparent Digestibility of Broilers

GUAN Leqi; YU Xiaorong; DAI Zhenglie; LIU Jinsong; DAI Bing; YANG Caimei; ZHANG Ruiqiang; WU Yanping

doi:10.3969/j.issn.1006-267x.2022.09.027

2022 , Vol. 34 >Issue 9: 5721 - 5729

DOI: https://doi.org/10.3969/j.issn.1006-267x.2022.09.027

RESEARCH PAPER

Effects of Lactobacillus on Growth Performance, Digestive Enzyme Activities and Nutrient Apparent Digestibility of Broilers

GUAN Leqi ,
YU Xiaorong ,
DAI Zhenglie ,
LIU Jinsong ,
DAI Bing ,
YANG Caimei ,
ZHANG Ruiqiang ,
WU Yanping

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1. College of Animal Science and Technology·College of Veterinary Medicine, Zhejiang Agricultural and Forestry University, Hangzhou 311300, China;
2. Zhejiang Vegamax Biotechnology Co., Ltd., Anji 313300, China

Received date: 2022-03-22

Online published: 2022-10-17

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Abstract

This experiment was conducted to study the effects of Lactobacillus plantarum (LPM) and Lactobacillus casei (LPI) on growth performance, digestive enzyme activities and nutrient apparent digestibility of broilers. A total of 480 one-day-old healthy yellow feather broilers were randomly selected and classified into four groups, with eight replicates each group, each replicate contained 15 broilers. Control group (CON) was fed a basal diet, experimental groups were fed the basal diets supplemented with 1 000 mg/kg LPI (LPI group, number of viable bacteria was 3×10⁹ CFU/g), 1 000 mg/kg LPM (LPM group, number of viable bacteria was 3.5×10⁸ CFU/g) and 2 000 mg/kg complex-probiotic-preparation (CL group, number of viable bacteria LPI was 1.5×10⁹ CFU/g, number of viable bacteria LPM was 1.75×10⁸ CFU/g), respectively. The feeding trial lasted for 56 days. The results showed as follows:compared with CON group, LPM significantly increased the final weight and average daily gain (P<0.05), enhanced the 28 and 56 days of age amylase activities and 28 days of age trypsin activity of pancreatic (P<0.05), upregulated the apparent digestibilities of 54 to 56 days of age organic matter and 23 to 25 days of age and 54 to 56 days of age crude protein (P<0.05). Adding CL could improve the apparent digestibility of 54 to 56 days of age crude protein (P<0.05). LPM or CL increased 56 days of age pancreas index (P<0.05), enhanced the 56 days of age amylase activity and 28 days of age trypsin activity of jejunum chyme (P<0.05), and decreased the 28 and 56 days of age serum urea nitrogen content (P<0.05). Diet supplemented with LPI, LPM and CL could increase the 56 days of age trypsin activity of pancreatic chyme (P<0.05), and increased the 56 days of age trypsin activity of jejunal chyme (P<0.05). In conclusion, LPM and LPI added to the diet can improve the growth performance and digestive organ indexes, enhance digestive enzyme activities, increase the apparent digestibilities of nutrients, and decrease serum urea nitrogen content. And, data show that LPM has better effect on improving the growth and nutrient metabolism in broilers. The LPM or LPI combination shows no significant synergistic effects in this study.

Key words： Lactobacillus; broilers; growth performance; digestive enzyme activity; nutrient apparent digestibilities

Cite this article

GUAN Leqi , YU Xiaorong , DAI Zhenglie , LIU Jinsong , DAI Bing , YANG Caimei , ZHANG Ruiqiang , WU Yanping . Effects of Lactobacillus on Growth Performance, Digestive Enzyme Activities and Nutrient Apparent Digestibility of Broilers[J]. Chinese Journal of Animal Nutrition, 2022 , 34(9) : 5721 -5729 . DOI: 10.3969/j.issn.1006-267x.2022.09.027

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