| Autor: |
Alba HDR; Department of Animal Science, Universidade Federal da Bahia, Salvador, 40170110 Bahia, Brazil., Freitas Júnior JE; Department of Animal Science, Universidade Federal da Bahia, Salvador, 40170110 Bahia, Brazil., Leite LC; Department of Animal Science, Universidade Federal do Recôncavo da Bahia, Cruz das Almas, 44380000 Bahia, Brazil., Azevêdo JAG; Department of Animal Science, Universidade Estadual de Santa Cruz, Ilhéus, 45662900 Bahia, Brazil., Santos SA; Department of Animal Science, Universidade Federal da Bahia, Salvador, 40170110 Bahia, Brazil., Pina DS; Department of Animal Science, Universidade Federal da Bahia, Salvador, 40170110 Bahia, Brazil., Cirne LGA; Department of Animal Science, Universidade Federal da Bahia, Salvador, 40170110 Bahia, Brazil., Rodrigues CS; Department of Animal Science, Universidade Federal da Bahia, Salvador, 40170110 Bahia, Brazil., Silva WP; Department of Animal Science, Universidade Federal da Bahia, Salvador, 40170110 Bahia, Brazil., Lima VGO; Department of Animal Science, Universidade Federal da Bahia, Salvador, 40170110 Bahia, Brazil., Tosto MSL; Department of Animal Science, Universidade Federal da Bahia, Salvador, 40170110 Bahia, Brazil., Carvalho GGP; Department of Animal Science, Universidade Federal da Bahia, Salvador, 40170110 Bahia, Brazil. |
| Abstrakt: |
This study aimed to evaluate the effect of the inclusion of protected or unprotected fats in the diet of feedlot lambs on feeding behavior, productive characteristics, carcass traits, and meat quality. Forty male Dorper × Santa Inês lambs (22.27 ± 2.79 kg) were randomly assigned to treatments in a completely randomized design. The experimental treatments consisted of five diets: no added fat (NAF), whole soybeans (WSB), calcium salts of fatty acids (CSFA), soybean oil (SO), and corn germ (CG). The total intake of dry matter (DMI) ( p < 0.001) and neutral detergent fiber (NDFI) ( p = 0.010) were higher in the CSFA and NAF diets. Feeding behavior, morphometric measurements, physicochemical characteristics, and centesimal composition of the Longissimus lumborum muscle were similar between treatments ( p > 0.05). The CSFA diet provided higher production ( p < 0.05) and better-quality carcasses. The inclusion of fat sources increased the concentration of polyunsaturated fatty acids ( p < 0.05). The use of calcium salts of fatty acids in feedlot lambs' diets provides better quantitative and qualitative characteristics of the meat and carcass. |
