Effects of vitamin E and selenium on performance, digestibility of nutrients, and carcass characteristics of Japanese quails reared under heat stress (34 degrees C)


Sahin K., KÜÇÜK O.

JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION, vol.85, pp.342-348, 2001 (Journal Indexed in SCI) identifier

  • Publication Type: Article / Article
  • Volume: 85
  • Publication Date: 2001
  • Doi Number: 10.1046/j.1439-0396.2001.00340.x
  • Title of Journal : JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION
  • Page Numbers: pp.342-348

Abstract

This study was conducted to determine the effects of vitamin E (dL-alpha -Tocopheryl acetate) and selenium (Se; Na-2-SeO3) on performance, digestibility of nutrients and carcass characteristics of Japanese quails reared under chronic heat stress (34 degreesC). A total of 120 10-day-old Japanese quails were randomly assigned to four treatment groups, three replicates of 10 birds each. The birds with a 2 x 2 factorial design received either two levels of vitamin E (125 and 250 mg/kg of diet) or two levels of Se (0.1 or 0.2 mg/kg of diet). A 250-mg vitamin E/kg of diet compared with that of 125 mg/kg of diet and higher dietary Se inclusions (0.1 vs. 0.2 mg/kg) resulted in a better performance (p = 0.001). The interaction between vitamin E and Se for feed intake (p = 0.03), final body weight change (p = 0.03) and feed efficiency (p 0.001) was detected. Carcass yield increased with increasing both dietary vitamin E and Se (p = 0.001). The interactions on carcass characteristics were all non-significant (p > 0.06). Digestibility of nutrients (DM, OM, CP and ether extract) was higher with higher dietary vitamin E (p = 0.03), and DM digestibility was also higher with higher dietary Se (p = 0.05). There were no interactions detected for digestibility of nutrients (p = 0.28). From the results of the present study, it was concluded that a combination of 250 mg of vitamin E and 0.2 mg of Se provides the greatest performance in Japanese quails reared under heat stress and this combination can be considered as a protective management practice in Japanese quail diets, reducing the negative effects of heat stress.