China Animal Husbandry and Veterinary Medicine ›› 2025, Vol. 52 ›› Issue (5): 2140-2148.doi: 10.16431/j.cnki.1671-7236.2025.05.018

• Nutritionand Feed • Previous Articles    

Effect of Dietary Probiotics Supplementation on Growth Performance, Slaughter Performance,Immune Organ Index and Apparent Metabolic Rate of Nutrients in Broilers

BIAN Zhiyao1,2, LIU Guohua1, HAN Shuaijuan2, CHEN Zhimin1, ZHENG Aijuan1   

  1. 1. Key Laboratory of Feed Biotechnology of Ministry of Agriculture and Rural Affairs, Risk Assessment Laboratory of Animal Product Quality Safety Feed Source Factors of Ministry of Agriculture and Rural Affairs, Feed Research Institute of Chinese Academy of Agricultural Sciences, Beijing 100081, China;
    2. College of Animal Science and Technology, Hebei Agricultural University, Baoding 071000, China
  • Received:2024-10-17 Published:2025-04-27

Abstract: 【Objective】 This study was conducted to evaluate the effects of Lactobacillus acidophilus (LA) E,Pediococcus pentosaceus (PP) JQ-M3 and Lactobacillus plantarum (LP) FRT4 on AA broilers.【Method】 Two hundred and forty 1-day-old AA broilers were selected and randomly divided into four groups with six replicates in each group and 10 chickens in each replicate.The broilers in control group were fed a basal diet,and in three experimental groups were fed diets supplemented with Lactobacillus acidophilus E (LA group),Pediococcus pentosaceus JQ-M3 (PP group),and Lactobacillus plantarum FRT4 (LP group),respectively,at a level of 5×106 CFU/g in the basal diet.The experimental period was 42 d.The effects of three probiotics on growth performance,slaughter performance,immune organ index and nutrient apparent metabolic rate of broilers were studied.【Result】 ①There was no significant difference in BW,ADG,ADFI and F/G among all the groups in 1-21,22-42 and 1-42 d (P>0.05).②Compared with control group,the rate of total clean rump was significantly higher in LA group (P<0.05),the rate of belly fat was significantly lower in LP group (P<0.05),and other slaughtering performance indicators had no significant difference among all the groups (P>0.05).③Bursa of Fabricius index was significantly higher in PP group than that in control group (P<0.05),and spleen index had no significantl difference among all the groups (P>0.05).④The apparent metabolic rate of crude protein in broilers of LA group and the corresponding indicator of ether extract in LP group were significantly higher compared with control group (P<0.05),and there was no significant difference in the apparent metabolic rate of total energy and dry matter between the groups (P>0.05).【Conclusion】 Adding Pediococcus pentosaceus JQ-M3 to the feed could improve the bursa of Fabricius index in AA broilers.Adding Lactobacillus acidophilus E and Lactobacillus plantarum FRT4 were beneficial for improving the digestive capacity and slaughter performance of AA broilers.

Key words: probiotics; AA broilers; growth performance; slaughter performance; immune organ index; apparent metabolic rate

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