Data/hora: 17/06/2024 00:35:50

Biblioteca(s): | Embrapa Caprinos e Ovinos.
Data corrente: | 28/11/2000
Data da última atualização: | 20/07/2023
Autoria: | MANSO, T.; MANTECON, A. R.; GIRALDEZ, F. J.; LAVIN, P.; CASTRO, T.
Título: | Animal performance and chemical body composition of lambs fed diets with different protein supplements.
Ano de publicação: | 1998
Fonte/Imprenta: | Small Ruminant Research, v. 29, n. 2, p. 185-191, Jun. 1998.
DOI: | https://doi.org/10.1016/S0921-4488(97)00122-3
Idioma: | Inglês
Conteúdo: | Abstract: Thirty six Merino lambs with average initial live weight of 13.5 kg (SE±0.56 kg) were used in a 3×3 factorial arrangement (4 lambs per group). The treatments were three concentrate supplements (barley [B], barley 82.5% plus soybean meal 14.5% [BSM] and barley 82.5% plus meat meal 14.5% [BMM]) and three slaughter weights (20, 25 and 30 kg live weight). The lambs fed the B diet consumed less concentrate supplement (0.701 vs. 0.780b and 0.758b kg DM day?1, P<0.05) gained weight less rapidly (217 vs. 304b and 304b g day?1, P<0.01) and had a greater food conversion ratio (3.29 vs. 2.64b and 2.57b g DM supplement kg?1 LW gain, P<0.01) than the lambs on the BSM and BMM treatments respectively. Lambs supplemented with B were characterised by the highest fat and energy deposition (P<0.01) in both components of the empty body weight (carcass and `non-carcass'). Although diet protein concentrations were different between supplements (B: 165.5, BSM: 219.3 and BMM: 237.2 g kg?1 DM), there were no differences (P>0.05) in crude protein intake between BSM and BMM. (171.0 vs. 179.7 g crude protein day?1). The source of dietary protein (soybean meal vs. meat meal) did not have a significant influence (P>0.05) on performance and chemical body composition of lambs. The interactions between the effect of slaughter weight and the concentrate supplement were non-significant (P>0.05). This study suggests that meat meal can successfully replace soybean meal as a protein supplement for growing lambs from weaning to 30 kg live weight and offer an alternative to soybean meal as a regional protein source for lamb diets.
Palavras-Chave: | Composicao corporal; Suplementacao.
Thesagro: | Crescimento; Ovino.
Thesaurus Nal: | Animal growth; Body composition; Lambs; Meat meal; Sheep feeding; Soybean meal.
Categoria do assunto: | L Ciência Animal e Produtos de Origem Animal
Registro original: | Embrapa Caprinos e Ovinos (CNPC)
Exemplares: | CNPC - (10315-1) - ADD - AP - DD -  -  -  - DIS