Journal Article

Effect of astaxanthin produced by Phaffia rhodozyma on growth performance, meat quality, and fecal noxious gas emission in broilers

Jin Suk Jeong and In Ho Kim

in Poultry Science

Volume 93, issue 12, pages 3138-3144
Published in print December 2014 | ISSN: 0032-5791
Published online November 2014 | e-ISSN: 1525-3171 | DOI: https://dx.doi.org/10.3382/ps.2013-03847
Effect of astaxanthin produced by Phaffia rhodozyma on growth performance, meat quality, and fecal noxious gas emission in broilers

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  • Zoology and Animal Sciences
  • Animal Pathology and Diseases
  • Animal Physiology
  • Ornithology
  • Veterinary Medicine

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A prospective alternative to antibiotics currently being evaluated is yeast and its derivative products. Phaffia rhodozyma is a species of yeast that produces the carotenoid pigment, astaxanthin (AST), which exhibits a wide variety of biological activities, including antioxidation in animals. A total of 432 one-day-old male broilers (Arbor Acres) were used in a 4-wk feeding experiment and each dietary treatment consisted of 9 replicate cages, with 16 broilers per replicate. Birds were randomly allotted to 1 of 3 corn-soybean meal-based diets supplemented with 0 mg (CON, basal diet), 1,000 mg (CON + AST production 0.1%), or 2,000 mg (CON + AST production 0.2%) of P. rhodozyma yeast per kg of feed, giving an intake of approximately 0, 2.3, and 4.6 mg of AST/kg of feed, respectively. The inclusion of AST linearly improved weight gain in the finisher period (linear, P = 0.0264) and during the overall experimental period (linear, P = 0.0194) and linearly decreased feed conversion ratio in the finisher period (linear, P = 0.0422) and tended to decrease during the overall experimental period (linear, P = 0.0568). No significant effects were observed with red blood cell, white blood cell, and lymphocyte numbers in response to 2.3 or 4.6 mg of AST/kg of feed (P > 0.05). The ammonia emission from samples treated with 2.3 and 4.6 mg of AST/kg was significantly lower than that of CON (linear, P = 0.0110). Taken together, these results indicate that supplementation with AST could improve BW gain and decrease feed conversion ratio and fecal noxious gas emission of ammonia in broilers.

Keywords: astaxanthin; broiler; growth performance; noxious gas emission; Phaffia rhodozyma

Journal Article.  5195 words. 

Subjects: Zoology and Animal Sciences ; Animal Pathology and Diseases ; Animal Physiology ; Ornithology ; Veterinary Medicine

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