The Revista Brasileira de Zootecnia (RBZ) is a publication dedicated to the broad field of Animal Science. We publish high-quality, original scientific research that spans across diverse areas within the discipline. The scope of RBZ encompasses a wide range of topics, including aquaculture, biometeorology and animal welfare, forage crops and grasslands, animal and forage plants breeding and genetics, animal reproduction, ruminant and non-ruminant nutrition, meat science and muscle biology, precision livestock, and animal production systems and agribusiness.
The Revista Brasileira de Zootecnia (RBZ) is a publication dedicated to the broad field of Animal Science. We publish high-quality, original scientific research that spans across diverse areas within the discipline. The scope of RBZ encompasses a wide range of topics, including aquaculture, biometeorology and animal welfare, forage crops and grasslands, animal and forage plants breeding and genetics, animal reproduction, ruminant and non-ruminant nutrition, meat science and muscle biology, precision livestock, and animal production systems and agribusiness.
The Revista Brasileira de Zootecnia (RBZ) is a publication dedicated to the broad field of Animal Science. We publish high-quality, original scientific research that spans across diverse areas within the discipline. The scope of RBZ encompasses a wide range of topics, including aquaculture, biometeorology and animal welfare, forage crops and grasslands, animal and forage plants breeding and genetics, animal reproduction, ruminant and non-ruminant nutrition, meat science and muscle biology, precision livestock, and animal production systems and agribusiness.
The objective of this experiment was to evaluate the effect of two digestible lysine levels and four digestible arginine levels on laying hens from 24 to 48 weeks of age. Three hundred and twenty Lohmann LSL laying hens were allotted in a completely randomized design in a 2 × 4 factorial arrangement, with two levels of digestible lysine (700 and 900 mg/kg of diet) and four digestible arginine levels (700, 800, 900 and 1000 mg/kg of diet). Results indicated requirement of 884 and 830 mg of digestible arginine/kg of diet, considering an average feed intake of 95 g/hen/day and an average hen weight of 1.5 kg, aiming at lesser feed intake and better nutritional balance of nitrogen, respectively. High digestible lysine levels in the diet require higher digestible arginine supplementation for a better performance of hens.
Performance and nitrogen balance of laying hens fed increasing levels of digestible lysine and arginine
Carvalho,Fabyola Barros de and Stringhini,José Henrique and Matos,Maíra Silva and Filho,Roberto Moraes Jardim and Café,Marcos Barcellos and Leandro,Nadja Susana Mogyca and Andrade,Maria Auxiliadora. Performance and nitrogen balance of laying hens fed increasing levels of digestible lysine and arginine. R. Bras. Zootec. [online]. 2012, vol.41, 10, [cited 2026-04-23], pp.2183-2188. Available from: <https://rbz.org.br/article/performance-and-nitrogen-balance-of-laying-hens-fed-increasing-levels-of-digestible-lysine-and-arginine/>. ISSN 1516-3598. http://doi.org/10.1590/S1516-35982012001000007.
Carvalho,Fabyola Barros de; Stringhini,José Henrique; Matos,Maíra Silva; Filho,Roberto Moraes Jardim; Café,Marcos Barcellos; Leandro,Nadja Susana Mogyca; Andrade,Maria Auxiliadora. Performance and nitrogen balance of laying hens fed increasing levels of digestible lysine and arginine. R. Bras. Zootec., v.41, 10, p. 2183-2188. Oct. 2012. Available from: <https://rbz.org.br/article/performance-and-nitrogen-balance-of-laying-hens-fed-increasing-levels-of-digestible-lysine-and-arginine/>. acess on 23 Apr. 2026. http://doi.org/10.1590/S1516-35982012001000007.
Carvalho,Fabyola Barros de, & Stringhini,José Henrique, & Matos,Maíra Silva, & Filho,Roberto Moraes Jardim, & Café,Marcos Barcellos, & Leandro,Nadja Susana Mogyca, & Andrade,Maria Auxiliadora. (2012). Performance and nitrogen balance of laying hens fed increasing levels of digestible lysine and arginine. R. Bras. Zootec., 41(10) , 2183-2188. http://doi.org/10.1590/S1516-35982012001000007.
CarvalhoFabyola Barros de, StringhiniJosé Henrique, MatosMaíra Silva, FilhoRoberto Moraes Jardim, CaféMarcos Barcellos, LeandroNadja Susana Mogyca, AndradeMaria Auxiliadora. Performance and nitrogen balance of laying hens fed increasing levels of digestible lysine and arginine. R. Bras. Zootec. [Internet]. 2012 Oct [cited 2026 Apr 23]; 41(10): 2183-2188. Available from: https://rbz.org.br/article/performance-and-nitrogen-balance-of-laying-hens-fed-increasing-levels-of-digestible-lysine-and-arginine/. http://doi.org/10.1590/S1516-35982012001000007.
Figure 6
Differential abundance for the species Faecalibacterium prausnitzii (A) and Megamonas funiformis (B).
