RESUMO
It was aimed to evaluate the effects of replacement of wheat bran in lambs' diets with spineless cactus (0, 33, 66, and 100%) in a lamb's diet on the physicochemical parameters, fatty acids and sensory analyasis of meat. The evaluation utilized 36 loins and legs from F1 ½ Dorperâ¯×⯽ Santa Inês lambs, with an average initial body weight of 19.5⯱â¯1.6â¯kg, were slaughtered after 70â¯days of confinement. Were found average values of 5.70, 11.27â¯N, 55.44â¯mg/100â¯g, of meat pH, shear force, and cholesterol, respectively. However, stearic acid, linoleic, linolenic, eicosatrienoic and eicosapentaenoic which linearly decreased. The color, aroma, texture, flavor, juiciness and global acceptance of meat were acceptable by the evaluators, additionally, they said they would buy meat coming of animals fed with 100% replacement. It is recommended that wheat bran is replaced by spineless cactus in the diet of lambs when this shows to be an ingredient with better cost-benefit ratio compared to wheat bran.
Assuntos
Ração Animal/análise , Cactaceae , Carne Vermelha/análise , Carneiro Doméstico/fisiologia , Adolescente , Adulto , Animais , Brasil , Cor , Comportamento do Consumidor , Dieta/veterinária , Ácidos Graxos/análise , Feminino , Humanos , Masculino , Odorantes , PaladarRESUMO
To assess the intake, digestibility of nutrients, ingestive behavior, performance, and carcass characteristics of feedlot lambs, 36 F1 Santa Ines × Dorper male lambs with an initial average weight of 19.5 ± 0.27 kg were fed with different levels of spineless cactus (0, 33, 66, and 100 %) as a replacement of the wheat bran. The replacement diets had no effect on the intake of dry matter (DM) or crude protein (CP), whose average values were 962 and 140 g/day, respectively. There was a quadratic effect on the intake of digestible organic matter (OM) and the digestibility of DM, CP, neutral detergent fiber (NDF), and non-fiber carbohydrates (NFC). The highest average daily gain (ADG) of 168 g/day was achieved at 58.7 % replacement level. The highest hot and cold carcass weights of 15.4 and 14.5 kg were achieved at 62.4 and 56.9 % replacement levels. For lambs in the feedlot, we recommend replacing wheat bran with up to 58.7 % spineless cactus.