›› 2016, Vol. 43 ›› Issue (12): 3206-3213.doi: 10.16431/j.cnki.1671-7236.2016.12.018

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Effects of Compounded Plant Feed Additives on the Growth Performance, Immune Function and Morphology of Internal Organs and Tissues in Yellow-feathered Broilers

TIAN Lang1,2, HE Yan-xia1, HOU Yue-e1, GUO Ji-yu1, QIAN Xue-qiao1, WANG Lin-chuan2   

  1. 1. Animal Husbandry and Fisheries Research Center, Guangdong Haid Group Co., Ltd., Guangzhou 511400, China;
    2. College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
  • Received:2016-05-13 Online:2016-12-20 Published:2016-12-22

Abstract:

The present study was aimed to study the effects of plant additives on growth performance, immune function and morphology of internal organs and tissues in Yellow-feathered broilers. 400 Yellow-feathered broilers at 10-day-old were divided into 4 groups. The broilers in control group were fed with basal diets, while in experimental group A,B and C were fed with basal diets added 3,5 and 8 g/kg plant additives, respectively. Each group had 10 replicates (10 birds per replicates), and the experiment lasted for 50 d. The results showed that group C got the best experimental results of all groups:ADG increased by 5.53% (P<0.05), F/G was decreased by 6.11% (P<0.05), the survival rate was increased by 2.16%(P<0.05), and immune organ index, duodenal villous length and serum antibody titer were significantly increased (P<0.05) compared with the control group. All the experimental groups supplemented with the plant additives could enhance development of the duodenum, liver and kidney, and NDV antibody titer. In conclusion, adding the plant additives in the diet could improve the growth performance, immune function and development of internal organs in Yellow-feathered broilers, and the recommended amount was 5 g/kg.

Key words: plant feed additives; Yellow-feathered broilers; growth performance; immune function; internal organs and tissues

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