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Effects of Candida krusei on Growth Performance, Immune Function, Blood Indices and Manure Deodorization of Broilers

  • SI Yanpei ,
  • LIU Guohua ,
  • CAI Huiyi ,
  • CHANG Wenhuan ,
  • ZHENG Aijuan ,
  • ZHANG Shu
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  • Key Laboratory of Feed Biotechnology of Agricultural Ministry, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China

Received date: 2016-01-18

  Online published: 2016-07-28

Abstract

Candida krusei (LSA) is a kind of yeast with ammonia nitrogen degradation ability that our research team screened out from chicken manure. This study was to evaluate the effects of different dietary supplementation levels of LSA on growth performance, immune function, blood indices and manure deodorization of broilers. A total of 240 one-day-old healthy Arbor Acres male broilers were randomly allotted to 4 groups with 6 replicates per group and 10 birds per replicate. The four diets included a basal diet without antibiotic and 3 experimental diets supplemented with 1.0×107, 1.0×108 and 1.0×109 CFU/kg LSA based on the basal diet, respectively. The experiment lasted for 42 d and feed and water were accessed ad libitum. The results showed as follows: 1) average daily feed intake, average daily gain, average body weight and ratio of feed to gain of broilers among all groups were not significantly different (P>0.05). 2) Dietary LSA supplementation had no significant influence on thymus index and bursal index of broilers (P>0.05), but 1.0×108 CFU/kg LSA significantly increased spleen index (P<0.05). 3) Dietary LSA supplementation significantly reduced the contents of serum uric acid and plasma ammonia (P<0.05), but had no significant influence on biochemical indices such as serum total protein, albumin and globulin (P>0.05). 4) Dietary LSA supplementation had no significant influence on contents of water and total nitrogen of manure (P>0.05), but 1.0×108 CFU/kg LSA significantly decreased the ammonia nitrogen content of manure (P<0.05). In conclusion, dietary LSA supplementation has no adverse effect on growth performance, immune organs and blood indices, and can enhance the immune function of broilers, improve their nitrogen metabolism, decrease the ammonia nitrogen content in the manure, and reduce environmental pollution.

Cite this article

SI Yanpei , LIU Guohua , CAI Huiyi , CHANG Wenhuan , ZHENG Aijuan , ZHANG Shu . Effects of Candida krusei on Growth Performance, Immune Function, Blood Indices and Manure Deodorization of Broilers[J]. Chinese Journal of Animal Nutrition, 2016 , 28(7) : 2228 -2234 . DOI: 10.3969/j.issn.1006-267x.2016.07.029

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