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.
An experiment was conducted to study the effects of L-Glutamic acid (L-Glu) and vitamin D3 on the performance of one-day-old male Hubbard broiler chicks, reared in heated batteries, for a 14 days period. The chicks were fed purified diets containing all essential L-amino acids, minerals, and vitamins (except Vitamin D3) and were supplemented with three levels of L-Glu (5, 10 and 15%) and with four levels of vitamin D3 (0; 5,000; 10,000 and 15,000 IU). The experimental design was a factorial 3 x 4 with four replicates with seven chicks each. The weight gains increased up to an estimated level of 8.56% of L-Glu and 15,000 IU of vitamin D3. The highest feed intake was obtained at an estimated level of 8.48% of L-Glu and 15,000 IU of vitamin D3. There was a reduction of leg problems with 10% of L-Glu and 15,000 IU of vitamin D3. L-Glu, at 8.56% estimated and 15.000 IU of vitamin D3 improved performance and reduced to a minimum the incidence of leg problems.
Effects of L-Glutamic Acid and Vitamin D3 on Performance and Incidence of Leg Problems of Broilers Chicks
Silva,Fernanda Alvares da and Moraes,George Henrique Kling de and Rodrigues,Ana Cláudia Peres and Oliveira,Maria Goreti de Almeida and Rostagno,Horacio Santiago and Albino,Luiz Fernando Teixeira and Fonseca,Cláudio César and Minafra,Cibele Silva. Effects of L-Glutamic Acid and Vitamin D3 on Performance and Incidence of Leg Problems of Broilers Chicks. R. Bras. Zootec. [online]. 2001, vol.30, 6 suppl., [cited 2026-04-24], pp.2059-2066. Available from: <https://rbz.org.br/article/effects-of-l-glutamic-acid-and-vitamin-d3-on-performance-and-incidence-of-leg-problems-of-broilers-chicks/>. ISSN 1516-3598. https://doi.org/10.1590/S1516-35982001000800015.
Silva,Fernanda Alvares da; Moraes,George Henrique Kling de; Rodrigues,Ana Cláudia Peres; Oliveira,Maria Goreti de Almeida; Rostagno,Horacio Santiago; Albino,Luiz Fernando Teixeira; Fonseca,Cláudio César; Minafra,Cibele Silva. Effects of L-Glutamic Acid and Vitamin D3 on Performance and Incidence of Leg Problems of Broilers Chicks. R. Bras. Zootec., v.30, 6 suppl., p. 2059-2066. Dec. 2001. Available from: <https://rbz.org.br/article/effects-of-l-glutamic-acid-and-vitamin-d3-on-performance-and-incidence-of-leg-problems-of-broilers-chicks/>. acess on 24 Apr. 2026. https://doi.org/10.1590/S1516-35982001000800015.
Silva,Fernanda Alvares da, & Moraes,George Henrique Kling de, & Rodrigues,Ana Cláudia Peres, & Oliveira,Maria Goreti de Almeida, & Rostagno,Horacio Santiago, & Albino,Luiz Fernando Teixeira, & Fonseca,Cláudio César, & Minafra,Cibele Silva. (2001). Effects of L-Glutamic Acid and Vitamin D3 on Performance and Incidence of Leg Problems of Broilers Chicks. R. Bras. Zootec., 30(6 suppl.) , 2059-2066. https://doi.org/10.1590/S1516-35982001000800015.
SilvaFernanda Alvares da, MoraesGeorge Henrique Kling de, RodriguesAna Cláudia Peres, OliveiraMaria Goreti de Almeida, RostagnoHoracio Santiago, AlbinoLuiz Fernando Teixeira, FonsecaCláudio César, MinafraCibele Silva. Effects of L-Glutamic Acid and Vitamin D3 on Performance and Incidence of Leg Problems of Broilers Chicks. R. Bras. Zootec. [Internet]. 2001 Dec [cited 2026 Apr 24]; 30(6 suppl.): 2059-2066. Available from: https://rbz.org.br/article/effects-of-l-glutamic-acid-and-vitamin-d3-on-performance-and-incidence-of-leg-problems-of-broilers-chicks/. https://doi.org/10.1590/S1516-35982001000800015.
Figure 6
Differential abundance for the species Faecalibacterium prausnitzii (A) and Megamonas funiformis (B).
