| Journal: | Anais da Academia Brasileira de Ciencias |
| Database: | PERIÓDICA |
| System number: | 000436239 |
| ISSN: | 0001-3765 |
| Authors: | Alagawany, Mahmoud1 El-Hindawy, Mohamed M1 El-Hack, Mohamed E. Abd1 Arif, Muhammad2 El-Sayed, Sabry Abd3 |
| Institutions: | 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 |
| Year: | 2020 |
| Volumen: | 92 |
| Number: | 1 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Aplicado, descriptivo |
| English abstract | 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 |
| Disciplines: | Medicina veterinaria y zootecnia |
| Keyword: | 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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