Cardoso Daniel Barros, Véras Robson Magno Liberal, de Carvalho Francisco Fernando Ramos, Magalhães André Luiz Rodrigues, de Vasconcelos Gustavo Araújo, Maciel Maria Inês Sucupira, Madruga Marta Suely, Urbano Stela Antas, de Lima Silva Janaina
Department of Animal Science, Universidade Federal Rural de Pernambuco, Recife, PE, Brazil.
Academic Unit of Garanhuns, Universidade Federal Rural de Pernambuco, Garanhuns, PE, Brazil.
Trop Anim Health Prod. 2019 Jul;51(6):1515-1521. doi: 10.1007/s11250-019-01840-2. Epub 2019 Feb 21.
The objective of this study was to evaluate the effect of the replacement of corn by cassava dregs (0, 33, 66, and 100%) in the diet of lamb on physicochemical parameters, fatty acid profile, and sensory attributes of meat. Forty male non-castrated Santa Inês crossbred lambs with an initial average weight of 20 ± 1.87 kg were slaughtered after 70 days. The physicochemical parameters and chemical composition of meat were not affected by the diets. Eicosenoic (C20:1n-9) and linolenic (C18:3n-3) acids increased linearly and there was a linear decreasing effect for the flavor score with increasing cassava dregs in the diets. The replacement of corn by cassava dregs did not influence omega-6:omega-3 ration or the total desirable fatty acids, as well as the color, aroma, tenderness, juiciness, or overall evaluation scores. Cassava dregs may be added in the diets of lambs, without negative effects on physicochemical characteristics, chemical composition, and fatty acid indexes, with positive effects on unsaturated fatty acid content. However, the total replacement of corn altered the sensory attributes and decreased purchase intent of the meat.
本研究的目的是评估用木薯渣（0%、33%、66%和100%）替代羔羊日粮中的玉米对肉的理化参数、脂肪酸谱和感官特性的影响。40只初始平均体重为20±1.87千克的非阉割雄性圣伊内斯杂交羔羊在70天后屠宰。日粮对肉的理化参数和化学成分没有影响。二十碳烯酸（C20:1n-9）和亚麻酸（C18:3n-3）呈线性增加，随着日粮中木薯渣含量的增加，风味评分呈线性下降。用木薯渣替代玉米不会影响ω-6:ω-3比值或总有益脂肪酸，以及颜色、香气、嫩度、多汁性或总体评价得分。木薯渣可以添加到羔羊日粮中，对理化特性、化学成分和脂肪酸指标没有负面影响，对不饱和脂肪酸含量有积极影响。然而，完全替代玉米会改变感官特性并降低肉的购买意愿。
