Dietary levels of potassium for broiler chickens

Revista Brasileira de Ciência Avícola

Je Oliveira²  Lft Albino²  Hs Rostagno²  Le Páez¹  Dco Carvalho¹ 

[1],Universidade Federal de Viçosa Department of Animal Science Viçosa Minas Gerais ,Brazil

关键词: Broiler chickens;    ion;    mineral;    potassium;    requirement;    weight gain;   

DOI  :  10.1590/S1516-635X2005000100006

来源: SciELO

【 摘 要 】

Three experiments were conducted to determine the nutritional requirements of potassium (K) for male Ross broiler chickens, from 8 to 21, 22 to 42 and 43 to 53 days of age. The following parameters were evaluated: body weight gain (BWG), feed intake (FI) and feed conversion ratio (FCR). In each experiment, a completely randomized experimental design was used, with six treatments (K levels), and six, eight and eight numbers of replicates, and eight, five and four birds per pen, respectively. The experimental diets were basal diets deficient in K but supplemented with K carbonate to result in levels of 0.30, 0.44, 0.58, 0.72, 0.86 and 1.00% K. Estimated requirements for BWG were 0.628, 0.714 and 0.798% K, for the periods 8-21, 22-42 and 43-53 d, respectively.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License