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. 2023 Jun;102(6):102610.
doi: 10.1016/j.psj.2023.102610. Epub 2023 Feb 27.

Effects of Lactobacillus plantarum and its fermentation products on growth performance, immune function, intestinal pH, and cecal microorganisms of Lingnan yellow chicken

Jingyi Wang  1 , Lan Yao  2 , Jun Su  2 , Runran Fan  1 , Jiaqi Zheng  2 , Yuzhu Han  3
Affiliations

Effects of Lactobacillus plantarum and its fermentation products on growth performance, immune function, intestinal pH, and cecal microorganisms of Lingnan yellow chicken

Jingyi Wang et al. Poult Sci. 2023 Jun.

Abstract

The present research was conducted to investigate the effects of dietary supplementation of Lactobacillus plantarum and its fermentation products on growth performance, specific immune function, intestinal pH, and cecal microorganisms in yellow-feather broilers. A total of 1,200 yellow-feather broilers of similar weight and good health condition at 1 d of age were selected and randomly divided into 5 groups. The CK group was fed the basal diet, and the experimental group (I, II, III, IV) were supplemented with 0.1, 0.15% L. plantarum and 3, 4% L. plantarum fermentation products. The results showed that each treatment could improve the growth performance (P < 0.05) and feed conversion rate of yellow-feather broilers. Besides, the pH value of the gastrointestinal tract of yellow-feather broilers (P < 0.05) was significantly reduced through the use of L. plantarum and its fermentation products as additives, which also facilitated the animals to regulate the balance of cecal microorganisms. The immune function assay showed that the bursal index (P < 0.05), spleen index (P < 0.05), and the content of serum immunoglobulins IgA and IgG (P < 0.05) were significantly increased in yellow-finned broilers aged 1 to 21 d by supplementing the diet with L. plantarum. In conclusion, adding L. plantarum or its fermentation products to the diet can improve the growth performance of yellow-feather broilers, and the direct addition of L. plantarum is better than adding fermentation products.

Keywords: Cecal microorganism; Growth performance; Immune function; Lactobacillus plantarum; Yellow-feather broiler.

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Figures

Figure 1
Figure 1
Effect of Lactobacillus plantarum and its fermentation products on the growth performance of yellow-feather broiler. (A) Average daily weight gain (ADG); (B) Average daily feed intake (ADFI); (C) Feed conversion ratio (FCR). Different letters in the same column diagram indicate significant difference at P < 0.05 level. *CK: Normal feeding group; I: Additional 0.1% L. plantarum; II: Additional 0.15% L. plantarum; III: Additional 3% L. plantarum fermentation product; IV: Additional 4% L. plantarum fermentation product.
Figure 2
Figure 2
Effect of Lactobacillus plantarum and its fermentation products on the number of intestinal microorganisms in yellow-feather broiler. (A) Lactobacillus; (B) Bifidobacterium; (C) Escherichia coli. Different letters in the same column diagram indicate significant difference at P < 0.05 level. *CK: Normal feeding group; I: Additional 0.1% L. plantarum; II: Additional 0.15% L. plantarum; III: Additional 3% L. plantarum fermentation product; IV: Additional 4% L. plantarum fermentation product.
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