Performance, carcass characteristics and non-carcass components of Texel × Santa Inês lambs fed fat sources and monensin
Open Access
- 1 February 2012
- journal article
- Published by FapUNIFESP (SciELO) in Revista Brasileira de Zootecnia
- Vol. 41 (2), 421-431
- https://doi.org/10.1590/s1516-35982012000200027
Abstract
Performance, carcass, non-carcass and commercial cuts and components of Texel × Santa Inês crossbred lambs, managed in confinement and fed diets based on soybean oil, soybeans and a conventional diet, with or without the use of monensin (78 ppm dry matter basis) were evaluated. Thirty-six Texel × Santa Inês lambs (18 males and 18 females) were managed in intensive systems. Animals were slaughtered after 87 days of confinement, and performance, carcass characteristics, weight and percentages of carcass and non-carcass components were evaluated. The animals fed the control diet had heavier carcass and parts than animals fed soybean, while the oil diet did not differ from the controls in most parameters. The animals fed soybean showed lower intake kg dry matter (DM), organic matter (OM), crude protein (CP), neutral detergent fiber (NDF) and metabolizable energy (ME) compared with animals fed the control diet, increased ether extract (EE) intake in kg, % body weight (BW) and metabolic weight (MW) and did not differ from the soybean oil diet. Animals receiving monensin had lower DM intake, OM, CP, EE, NDF, gross energy (GE) regardless of the expression, % kg BW, or % PM, than the animals that did not receive the additive. Males produced better and had heavier cuts than the females; the latter deposited subcutaneous fat earlier. Animals that received oil or soybean showed greater body weight and small intestine percentage. Soybean oil intake did not improve performance, carcass weights or parts of Santa Ines × Texel lambs in confinement. Soybeans at 15% dry matter reduced energy intake and lamb performance. The use of monensin at 78 ppm on a dry matter basis is not recommended for lambs in confinement, especially if associated with oil or soybeans that may harm animal performanceKeywords
This publication has 20 references indexed in Scilit:
- Grãos de girassol ou gordura protegida em dietas com alto concentrado e ganho compensatório de cordeiros em confinamentoRevista Brasileira de Zootecnia, 2010
- Monensina sódica e Saccharomyces cerevisiae em dietas para bovinos: fermentação ruminal, digestibilidade dos nutrientes e eficiência de síntese microbianaRevista Brasileira de Zootecnia, 2010
- Características quantitativas da carcaça e qualitativas do músculo Longissimus dorsi de cabritos ¾ Boer + ¼ Saanen confinados recebendo rações contendo grãos de oleaginosasRevista Brasileira de Zootecnia, 2009
- Fontes de lipídeos na dieta de búfalas lactantes: consumo, digestibilidade e N-uréico plasmáticoRevista Brasileira de Zootecnia, 2009
- Efeitos da enramicina e monensina sódica sobre a digestão de nutrientes em bovinos alimentados com dietas contendo alto nível de concentradosRevista Brasileira de Zootecnia, 2008
- Desempenho de vacas de descarte recebendo dietas com ou sem monensinaCiência Rural, 2008
- Perfil de ácidos graxos e conteúdo de ácido linoléico conjugado no leite de vacas alimentadas com a combinação de óleo de soja e fontes de carboidratos na dietaRevista Brasileira de Zootecnia, 2006
- Avaliação da monensina sódica em vacas leiteirasScientia Agricola, 1995
- Effect of Roasting Temperatures on Soybean Utilization by Young Dairy CalvesJournal of Dairy Science, 1993
- Relative Contributions of Ruminal Bacteria and Protozoa to the Degradation of Protein in VitroJournal of Animal Science, 1987