China Animal Husbandry and Veterinary Medicine ›› 2022, Vol. 49 ›› Issue (1): 98-108.doi: 10.16431/j.cnki.1671-7236.2022.01.011

• Nutrition and Feed • Previous Articles     Next Articles

Effects of Compound Probiotics Added to Drinking Water on Growth Performance and Intestinal Microflora in Lingnan Yellow Feather Broilers

LIU Shi1, LIU Jing1,2, CHEN Zhuang1, YU Ting1, BEI Jinlong1, WANG Lei1, LI Zhengmin3, WANG Zhilin1   

  1. 1. Guangdong Provincial Key Laboratory of Crop Germplasm Resources Conservation and Utilization, Agro-Biological Gene Research Center, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China;
    2. College of Animal Science, South China Agricultural University, Guangzhou 510642, China;
    3. Jiangmen Xinhui Haotian Biotechnology Co., Ltd., Jiangmen 529000, China
  • Received:2021-08-11 Online:2022-01-05 Published:2021-12-29

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Abstract: [Objective] To study the effects of compound probiotics added to drinking water on growth performance and intestinal microflora in Lingnan Yellow feather broilers. [Method] 270 healthy and fast-sized Lingnan Yellow feather broilers at 21 days old were selected and randomly divided them into 3 groups. The control group was fed basal diet, the antibiotic group was fed basal diet+300 g/t 15% chlortetracycline and 40 g/t 50% virginiamycin, and the probiotics group fed with basic diet+drinking water supplemented with compound probiotics. Among them, the compound probiotic preparation was 1:1:1 compatible Lactobacillus reuteri, Lactobacillus plantarum and Saccharomyces cerevisiae, and the addition amount of each strain was 1.0×106 CFU/mL. The test period was 5 weeks, and the whole process was free to eat and drink. [Results] ①At 22-42 days of age, compared with control group, the feed-to-weight ratio (F/G) of probiotic and antibiotic groups were significantly reduced (P<0.05);At 22-56 days of age, compared with control group, the average daily gain (ADG) of probiotic and antibiotic groups were significantly increased (P<0.05), and the probiotic group had the lowest mortality, and the uniformity was better than that of control and antibiotic groups. ②At 42 days of age, the ileal Observed Species index, Shannon index and Ace index of antibiotic group were significantly higher than that of control and probiotic groups (P<0.05), and the cecal Observed Species index of antibiotic group was significantly lower than that of control and probiotics groups (P<0.05). ③In terms of relative abundance of species, the probiotic group had an advantage in the relative abundance of Firmicutes and Lactobacillus, while the antibiotic group in the other phylums and genus all showed higher relative abundance, the probiotic and control groups showed the same trend. [Conclusion] Adding compound probiotics to drinking water could significantly improve the growth performance of Lingnan Yellow feather broilers at 22-56 days of age, and effectively reduce mortality, the overall effect was significantly better than that of control group, closed to the antibiotic group, and had part of the high-efficiency replacement function. In terms of the intestinal microbiome, the probiotic group showed greater similarity with control group as a whole, indicated that the addition of compound probiotics in drinking water had little effect on the intestinal microbes.

Key words: compound probiotics; Yellow feather broilers; growth performance; microbiomics

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