Influence of low-protein diet with different levels of amino acids on laying hen performance, quality and egg composition



Título del documento: Influence of low-protein diet with different levels of amino acids on laying hen performance, quality and egg composition
Revista: Anais da Academia Brasileira de Ciencias
Base de datos: PERIÓDICA
Número de sistema: 000436239
ISSN: 0001-3765
Autores: 1
1
1
2
3
Instituciones: 1Zagazig University, Faculty of Agriculture, Zagazig, Sharqiya. Egipto
2University of Sargodha, University College of Agriculture, Sargodha, Punjab. Pakistán
3Zagazig University, Faculty of Veterinary Medicine, Zagazig, Sharqiya. Egipto
Año:
Volumen: 92
Número: 1
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Aplicado, descriptivo
Resumen en inglés 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
Disciplinas: Medicina veterinaria y zootecnia
Palabras clave: Aves de corral,
Nutrición animal,
Dietas hipoproteicas,
Aminoácidos,
Gallinas ponedoras,
Producción de huevo,
Calidad del huevo
Keyword: Poultry,
Animal nutrition,
Laying hens,
Low protein diets,
Amino acids,
Egg production,
Egg quality
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