Data/hora: 01/06/2024 16:21:23

Provedor de dados: | 96
País: | Brazil
Título: | Performance and metabolic pattern of feedlot lambs using soyabean hulls associated to different non-protein nitrogen sources
Autores: | Ziguer,Evaneo Alcides; Roll,Victor Fernando Büttow; Bermudes,Rogério Fôlha; Montagner,Paula; Pfeifer,Luiz Francisco Machado; Del Pino,Francisco Augusto Burkert; Corrêa,Marcio Nunes; Dionello,Nelson José Laurino.
Data: | 2012-02-01
Ano: | 2012
Palavras-chave: | Biochemical analysis; Feeding; Performance; Urea.
Resumo: | The aim of this study was to evaluate the metabolic profile of the use of soyabean hulls associated with two sources of non-protein nitrogen (NPN) on the finishing of feedlot lambs. Eighty crossbred Suffolk non-castrated lambs aging 69±6 days and weighing 23.11±1.78 kg were used. Lambs were randomly allocated into 4 experimental groups according to the NPN source: conventional urea (1%); protected urea; 1% protected urea + 0.5% conventional urea; and a control group, which did not receive urea supplementation. Blood samples were collected weekly to determine the plasma concentrations of urea, albumine, γ-glutamiltransferase (GGT), calcium and phosphorus. The control group had higher average daily gain and final weight than protected urea and protected urea + conventional urea groups; however, it did not differ from the conventional urea group. No differences between the groups were observed for dry matter intake, feed conversion or warm carcass yield and carcass finishing. Regarding the serum protein profile, the o group fed conventional urea had higher serum concentration of urea than that of protected + conventional urea. Urea supplementation did not improve the performance of feedlot lambs fed diets with high level of soybean hulls.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000200030
Editor: | Sociedade Brasileira de Zootecnia
Relação: | 10.1590/S1516-35982012000200030
Formato: | text/html
Fonte: | Revista Brasileira de Zootecnia  v.41 n.2 2012
Fonte: | info:eu-repo/semantics/openAccess