Your browser doesn't support javascript.
loading
Protease Supplementation in the Diet of Light Laying Hens
Barbosa, S. A. P. V; Corrêa, G. S. S; Corrêa, A. B; Figueiredo, E. M; Vieira, B. S; Oliveira, C. F. S; Tavares, J. M. N; Lima Neto, H. R.
Afiliação
  • Barbosa, S. A. P. V; Instituto Federal de Educação, Ciência e Tecnologia de Mato Grosso. São Vicente. BR
  • Corrêa, G. S. S; Universidade Federal de Mato Grosso. Cuiabá. BR
  • Corrêa, A. B; Instituto Federal de Educação, Ciência e Tecnologia de Mato Grosso. Alta Floresta. BR
  • Figueiredo, E. M; Universidade Federal de Mato Grosso. Cuiabá. BR
  • Vieira, B. S; Instituto Federal de Educação, Ciência e Tecnologia de Mato Grosso. Alta Floresta. BR
  • Oliveira, C. F. S; Universidade Federal de Mato Grosso. Cuiabá. BR
  • Tavares, J. M. N; Grupo Mantiqueira. Primavera do Leste. BR
  • Lima Neto, H. R; Alltech- Evanscrest Gardens NW. Alberta. CA
Rev. bras. ciênc. avic ; 24(4): eRBCA-2021-1582, 2022. tab
Article em En | VETINDEX | ID: biblio-1416066
Biblioteca responsável: BR68.1
ABSTRACT
This work was developed to evaluate the impact of the addition of proteases on the performance characteristics, egg quality, relative weight of digestive organs, and intestinal morphometry of laying hens. 390 Hy Line W36® hens were allocated into five treatments and six replicates with 13 animals. The treatments were 1) Control (standard formulation), 2) Negative control A - NCA (nutritional reduction according to protease A matrix), 3) Negative control B - NCB (nutritional reduction according to protease B matrix), 4) NCA+protease A (0.250 g/kg of feed) and 5) NCB+protease B (0.125 g/kg of feed). Hens fed the NCA, NCB, and NCA+protease A diets showed reductions in feed intake and egg mass. The addition of protease B provided better results for egg production in both percentage and per dozen as compared to the group fed with the NCA+protease A diets. The hens subjected to diets NCA and NCB showed eggs with a reduced eggshell and thickness percentage. However, supplementation with proteases A and B improved these parameters to values similar to the controls. There was no significant effect of the treatments on the relative weight of the liver, proventricle, gizzard, pancreas, and small intestine. However, the addition of protease A resulted in a decreased value for the relative weight of the large intestine. The jejunum and ileum crypt depths were, respectively, smaller in hens fed the control diet in relation to the NCB diet and the NCA and NCB diets. As it can be concluded, Protease B supplementation provided the best performance results.(AU)
Assuntos
Palavras-chave

Texto completo: 1 Base de dados: VETINDEX Idioma: En Revista: Rev. bras. ciênc. avic Ano de publicação: 2022 Tipo de documento: Article

Texto completo: 1 Base de dados: VETINDEX Idioma: En Revista: Rev. bras. ciênc. avic Ano de publicação: 2022 Tipo de documento: Article