Gurgeira Danielle Nunes, Crisóstomo Charleni, Sartori Luiza Vage Coelho, de Paz Claudia Cristina Paro, Delmilho Gustavo, Chay-Canul Alfonso Juventino, Bedoya Héctor Javier Narvaez, Vega Wilder Hernando Ortiz, Bueno Mauro Sartori, da Costa Ricardo Lopes Dias
Instituto de Zootecnia, Rua Heitor Penteado, 56, Nova Odessa, SP 13380-011, Brazil.
Instituto de Zootecnia, Rodovia Carlos Tonani, km 94, Sertãozinho, SP 14160-900, Brazil.
Meat Sci. 2022 Dec;194:108959. doi: 10.1016/j.meatsci.2022.108959. Epub 2022 Sep 5.
The objective was to evaluate the performance, carcass and meat quality of 40 lambs classified by RFI (residual feed intake) and RIG (residual intake and gain). Dry matter intake (DMI) was recorded to calculate the RFI and RIG, classified as efficient, moderately or inefficient. After the confinement period, they were slaughtered and the carcass and meat quality were determined. The efficient animals had DMI scores of 0.700 RFI and 0.400 kg/d RIG, lower than the inefficient ones with similar weight gain. The RFI efficient animals showed greater shear force, without effect in the RIG classification. In general, the variables analyzed were not influenced by RFI or RIG. Efficiency measures do not affect the carcass and meat quality of sheep, but they do have the advantage of identifying animals with lower feed consumption, making the system more efficient. However, as the dataset is limited to fully assess the effects, this manuscript can be used as preliminary results for future studies.
目的是评估根据残余采食量（RFI）和残余采食量与增重（RIG）分类的40只羔羊的生产性能、胴体和肉质。记录干物质采食量（DMI）以计算RFI和RIG，并将其分为高效、中等或低效。在圈养期结束后，将它们屠宰并测定胴体和肉质。高效动物的DMI得分分别为0.700 RFI和0.400 kg/d RIG，低于体重增加相似的低效动物。RFI高效的动物表现出更大的剪切力，在RIG分类中没有影响。总体而言，所分析的变量不受RFI或RIG的影响。效率指标不会影响绵羊的胴体和肉质，但它们具有识别采食量较低动物的优势，从而使系统更高效。然而，由于数据集有限，无法全面评估其影响，本手稿可作为未来研究的初步结果。
