Pinheiro Rafael S B, Farias Iasmin M S C, Francisco Caroline L, Moreno Greicy M B
School of Engineering, São Paulo State University Julio de Mesquita Filho (Unesp)-Ilha Solteira Câmpus, Ilha Solteira 15385-000, Brazil.
School of Veterinary Medicine and Animal Science, São Paulo State University Julio de Mesquita Filho (Unesp)-Botucatu Câmpus, Botucatu 18618-681, Brazil.
Animals (Basel). 2023 Mar 7;13(6):957. doi: 10.3390/ani13060957.
Low rainfall in Northeast Brazil is a limiting factor for animal production. Forages that present crassulacean acid metabolism, such as forage cactus, are adapted to the edaphoclimatic conditions of this region, as they lose little water through the stomata. Thus, the objective was to evaluate the physical and chemical quality, fatty acid profile and sensory acceptance of the meat from goats fed forage cactus as a substitute for Tifton 85 hay. Twenty-one uncastrated mixed-breed goats with a mean body weight of 18 ± 0.86 kg and 7 ± 1 months of age were used. A completely randomized design with three treatments and seven replications per treatment was performed. The inclusion of 0 (control), 25 and 55% of forage cactus in substitution of Tifton 85 hay in the diet of the goats was evaluated. The lipid content in the meat of animals fed 25 and 55% of forage cactus was 1.33% and 1.26%, respectively, and was lower ( < 0.05) in relation to the meat of animals that received the control diet (1.56%). The inclusion of 55% of forage cactus provided an increase ( < 0.05) in the content of monounsaturated fatty acids in the meat (52.71%) in relation to the control meat (37.75%). Sensory analysis differed ( < 0.05) between treatments. We recommend replacing Tifton 85 hay with 55% forage cactus, as it presents greater sensory acceptance, and provides lower lipid content and higher content of monounsaturated fatty acids in goat meat.
巴西东北部的低降雨量是动物生产的一个限制因素。具有景天酸代谢的牧草，如饲料仙人掌，适应该地区的土壤气候条件，因为它们通过气孔流失的水分很少。因此，本研究的目的是评估用饲料仙人掌替代提夫顿85干草喂养的山羊肉的物理和化学品质、脂肪酸谱以及感官接受度。选用了21只平均体重为18±0.86千克、7±1月龄的未阉割杂种山羊。采用完全随机设计，设置三个处理组，每个处理组重复七次。评估了在山羊日粮中用0（对照）、25%和55%的饲料仙人掌替代提夫顿85干草的效果。饲喂25%和55%饲料仙人掌的动物肉中的脂质含量分别为1.33%和1.26%，与接受对照日粮的动物肉（1.56%）相比更低（P<0.05）。与对照肉（37.75%）相比，添加55%的饲料仙人掌使肉中单不饱和脂肪酸的含量增加（P<0.05）（52.71%）。各处理组之间的感官分析存在差异（P<0.05）。我们建议用55%的饲料仙人掌替代提夫顿85干草，因为它具有更高的感官接受度，并且能降低山羊肉中的脂质含量，提高单不饱和脂肪酸的含量。
