China Animal Husbandry and Veterinary Medicine ›› 2022, Vol. 49 ›› Issue (2): 548-558.doi: 10.16431/j.cnki.1671-7236.2022.02.016

• Nutrition and Feed • Previous Articles     Next Articles

Effects of Barley Worm Meal on Growth Performance, Intestinal Structure and Microflora Composition of Yellow-feathered Broilers

YU Qinping1, HUANG Jingyu2, ZHANG Cuiping3, LIU Jing1, HUANG Yuanbin4, YU Ting1, ZHANG Xiaoai1, WANG Lei1, CHEN Jinsheng5, CHEN Wenqing5, WANG Zhilin1, CHEN Zhuang1, RONG Ting6   

  1. 1. Key Laboratory of Conservation and Utilization of Crop Germplasm Resources in Guangdong Province, Agricultural Biological Gene Research Center, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China;
    2. Guangzhou Zhiteqi Biotechnology Co., Ltd., Guangzhou 510700, China;
    3. Guangdong Haida Group, Guangzhou 511400, China;
    4. Guangdong Chongchong Biotecnology Co., Ltd., Guangzhou 511462, China;
    5. Raoping Animal Health Supervision Institute, Chaozhou 515700, China;
    6. State Key Laboratory of Livestock and Poultry Breeding, Key Laboratory of Animal Nutrition and Feed Science in South China, Ministry of Agriculture and Rural Affairs, Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangdong Key Laboratory of Animal Breeding and Nutrition, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
  • Received:2021-06-30 Published:2022-01-27

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Abstract: 【Objective】 This study was conducted to investigate the effects of barley worm meal on growth performance, intestinal structure and microflora composition of Yellow-feathered broilers.【Method】 A total of 216 one-day-old healthy Yellow-feathered broilers with an average body weight (BW) of (30.03±0.23) g were randomly divided into 3 groups with 6 replicates and 12 broilers per replicate.The animals were fed with the following diets: basal diet (control group), basal diet +1% barley worm meal and basal diet +3% barley worm meal groups.The nutrient level of each group was the same, and the experimental period was 63 days.The average daily gain (ADG), average daily feed intake (ADFI), body weight (BW), feed weight ratio (F/G) and death rate of 21, 42 and 63 days old treatments were counted respectively.At 63 days old, duodenum, jejunum and ileum were slaughtered to measure the length and structure of intestinal segment, and the contents of ileum and cecum were taken for flora composition analysis.【Result】 Compared with control group, there was no significant difference in ADG of 1 to 21 days old, as well as BW, ADFI, F/G and death rate of 21 days old (P > 0.05).ADG of 22 to 42 days old and BW of 42 days old were increased significantly in 1% and 3% barley worm meal groups (P < 0.05), while F/G was decreased significantly (P < 0.05).At 43-63 days old, BW was increased significantly at 63 days in 1% barley worm meal group (P < 0.05), and ADFI was decreased significantly in 3% barley worm meal group (P < 0.05).Compared with control group, the length of cecum in 1% and 3% barley worm meal groups was increased significantly at 21 days od (P < 0.05), the length of duodenum in 3% barley worm meal group increased significantly at 42 days old (P < 0.05), there was no significant difference in the length of duodenum, jejunum, ileum and cecum among the treatment groups at 63 days old (P > 0.05), the villus height, recess depth and villus ratio of duodenum, jejunum and ileum in 1% barley worm group were not significantly different (P > 0.05).In terms of the composition of intestinal microbiota, the dominant bacteria in ileum of control group and 1% barley worm meal group were Lactobacillus, Rochebacillus and Bacteroides, and the dominant bacteria in the cecum were Bacteroides, Alistipes and Lactobacillus. Compared with control group, the proportion of Lactobacillus, Bacteroides and Alistipes in the ileum of 1% barley worm meal group increased, and the proportion of Roche decreased.The proportion of Bacteroides and Alistipes in cecum increased, while Lactobacillus and Roche decreased in the 1% barley worm meal group.【Conclusion】 Adding appropriate amount of barley worm meal could improve the production performance and digestive tract development of Yellow-feathered broilers, which could regulate the composition of intestinal microflora and bacteriostasis.

Key words: barley worm meal; Yellow-feathered broiler; growth performance; intestinal structure

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