Nutritional potassium requirement for laying Japanese quails

Revista Brasileira de Zootecnia

Fernando Guilherme Perazzo Costa²  Ladyanne Raia Rodrigues²  Cláudia De Castro Goulart¹  Cleber Franklin Santos De Oliveira²  Valéria Pereira Rodrigues²  José Humberto Vilar Da Silva¹ 

[1] ,Universidade Federal da Paraíba Departamento de Zootecnia Centro de Ciências AgráriasAreia PB

关键词: egg production;    electrolyte balance;    mineral;   

DOI  :  10.1590/S1516-35982011001200020

来源: SciELO

【 摘 要 】

The objective of this study was to evaluate the potassium requirement for laying Japanese quails. Two hundred and forty quails were distributed in a randomized block design, with five treatments and six replicates, with eight birds each. The treatments consisted of a basal diet deficient in potassium (K) (2.50 g/kg), supplemented with potassium carbonate, to replace the inert, to reach levels of 2.50, 3.50, 4.50, 5.50 and 6.50 (g/kg) of K in the diet. There was a quadratic effect of K levels on feed intake, egg production, egg mass and feed conversion per egg mass and per egg dozen, estimating the requirements of 4.26, 4.41, 4.38, 4.43 and 4.48 (g/kg) of K diet, respectively. There was no significant effect on the levels of K in the diet on egg weight, albumen weight, percentage of yolk or shell and yolk color. However, yolk and shell weights reduced and the albumen percentage increased linearly with increasing levels of K in the diet. Despite the reduction of shell weight, the increased levels of K did not influence the specific gravity and shell thickness. The use of 4.41 g/kg of potassium is recommended in the diet for laying Japanese quails.

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