Khongpradit Anchalee, Jaroensri Paramapich, Maitreejet Wisut, Boonsaen Watcharaporn, Boonsaen Phoompong, Sawanon Suriya
Department of Animal Science, Faculty of Agriculture at Kampaeng Saen, Kasetsart University Kampaeng Saen Campus, Nakhon Pathom, 73140, Thailand.
Trop Anim Health Prod. 2025 Jun 14;57(5):268. doi: 10.1007/s11250-025-04521-5.
This study evaluated the growth performance, carcass attributes, and meat quality of steers raised under organic and conventional agricultural systems. In the conventional system, steers were divided into two feeding groups. The first group, comprising Kampaeng Saen steers (KPS-Rf) and crossbred dairy steers (CDS-Rf), received a restricted concentrate diet (8 kg/head/day) along with unlimited Napier grass silage. The second group, consisting of Kampaeng Saen steers (KPS-Ab) and crossbred Wagyu steers (WC-Ab), was fed ad libitum concentrate and Napier grass silage. The conventional system resulted in significantly higher weight gain, final weight, average daily gain, and a more favorable feed conversion ratio compared to the organic system (P < 0.05). Within the conventional system, no significant differences were found between the limited and ad libitum concentrate feeding groups for final weight, weight gain, or average daily gain (P > 0.05). Significant differences (P < 0.05) were observed for hot and cold carcass weights, with the conventional system generally outperforming the organic system. Meat from the conventional system exhibited lower pH levels and lighter color (higher L* values) compared to the organic system (P < 0.05). Regarding nutritional composition, meat from the organic system contained higher crude protein and lower fat content compared to the conventional system (P < 0.05). Additionally, significant differences were observed in the fatty acid profiles, with organic meat showing higher levels of polyunsaturated fatty acids and omega-3 fatty acids (P < 0.05). KPS-Rf exhibited better growth performance and feed conversion efficiency than the other breeds in both conventional and organic systems.
本研究评估了在有机和传统农业系统下饲养的公牛的生长性能、胴体特性和肉质。在传统系统中，公牛被分为两个饲养组。第一组包括坎彭赛恩公牛（KPS-Rf）和杂交奶牛公牛（CDS-Rf），接受限量精饲料日粮（8公斤/头/天）以及不限量的象草青贮饲料。第二组由坎彭赛恩公牛（KPS-Ab）和杂交和牛公牛（WC-Ab）组成，自由采食精饲料和象草青贮饲料。与有机系统相比，传统系统的增重、终体重、平均日增重显著更高，饲料转化率更优（P < 0.05）。在传统系统内，限量和自由采食精饲料的饲养组在终体重、增重或平均日增重方面未发现显著差异（P > 0.05）。热胴体重和冷胴体重存在显著差异（P < 0.05），传统系统总体上优于有机系统。与有机系统相比，传统系统的肉pH值较低，颜色较浅（L*值较高）（P < 0.05）。在营养成分方面，与传统系统相比，有机系统的肉粗蛋白含量较高，脂肪含量较低（P < 0.05）。此外，脂肪酸谱存在显著差异，有机肉的多不饱和脂肪酸和ω-3脂肪酸含量较高（P < 0.05）。在传统和有机系统中，KPS-Rf的生长性能和饲料转化效率均优于其他品种。
