Influence of low-protein diet with different levels of amino acids on laying hen performance, quality and egg composition.
An Acad Bras Cienc
; 92(1): e20180230, 2020.
Article
em En
| MEDLINE
| ID: mdl-32267303
The present study aimed to investigate the consequences of dietary levels of crude protein (CP) and total sulfur amino acids (TSAA, Met+Cys) on productive performance, egg quality and egg components for Lohmann Brown laying hens through 18-34 weeks of age. A 2×3 factorial design experiment was conducted using two levels of CP (16 and 18 %) and three levels of Met+ Cys (0.67, 0.72 and 0.77 %). A total of 144 Lohmann Brown laying hens at 18 weeks of age were randomly divided into 6 treatment groups. The best values of final body weight and body weight change were recorded by the hens fed 18 % CP diet. Increasing dietary CP up to 18 % accompanied with the best (P> 0.01) feed conversion, egg weight and egg mass. The combination between low-CP diet (16 %) and 0.72 % Met+ Cys gave the best percentage of egg production. The majority of egg quality traits were not significantly altered by dietary treatments. The interaction between CP and Met+Cys levels had a statistical (P>0.01) impact on egg content of moisture and total solids only. It could be concluded that the best production criteria could be obtained by using 0.72% Met+Cys. Moreover, dietary level of 16 or 18 % CP with 0.72% Met+Cys is recommended for feeding Lohmann hens.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Galinhas
/
Dieta com Restrição de Proteínas
/
Ovos
/
Aminoácidos Sulfúricos
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Ração Animal
Limite:
Animals
Idioma:
En
Revista:
An Acad Bras Cienc
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
Egito
País de publicação:
Brasil