Electrolyte balance and crude protein requirement of laying Japanese quail / Níveis de balanço eletrolítico e proteína bruta para codornas japonesas na fase de postura
Vieira, Danilo Vargas Gonçalves; Bonaparte, Talita Pinheiro; Vargas Júnior, José Geraldo de; Barboza, Walter Amaral; Soares, Rita da Trindade Ribeiro Nobre; Pastore, Silvana Marques; Vieites, Flávio Medeiros.
Semina Ci. agr.
; 36(6): 3965-3976, nov.-dez. 2015. tab
Artículo
en Inglés
| VETINDEX | ID: vti-30296
The objective of this study was to evaluate the effects of two levels of crude protein and five levels of electrolyte balance on the performance and egg-quality of laying Japanese quail. Six hundred 45-day-oldquails were distributed in a randomized-block design with a 5 × 2 factorial arrangement comprising ten treatments, five replicates, and 12 birds per experimental unit. The electrolyte balance levels were 50, 125, 200, 275, and 350 mEq kg1of diet, and crude protein (CP) levels were 210 and 240 g kg-1. The performance and egg-quality variables assessed were feed intake, feed conversion, egg-laying percentage, egg weight and mass, and albumin, yolk and shell weight. There were no interactions among the studied factors. The electrolyte balance and crude protein levels did not significantly affect the performance variables. However, increased shell weight of eggs stored for seven days was observed at an electrolyte balance level of 200 mEq kg1. With regard to the CP levels, increased egg weight was observed at 28 days at a level of 210 g kg-1, whereas increased albumin weight was observed at 35 days of storage at a level of 240 g kg-1. A tendency toward an increase in egg albumin weight during the storage period of 14 days was observed. Based on the findings of this study, it is recommended that the diet for Japanese quails in the laying phase be formulated with an...(AU)
Biblioteca responsable:
BR68.1
Ubicación: BR68.1
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