Humate可能是一种有价值的家畜饲料添加剂,对养分利用和动物性能有潜在影响。因此,这项研究的目的是研究添加KHumateS100R对采食量的影响,体重增加,和安格斯牛的car体参数。在单独的钢笔中,将40只断奶干牛分为四个治疗组(n=10/腐殖酸钾KHumateS100R,澳大利亚Omnia专业)100天。治疗组包括第1组,35克KHumateS100R/动物/天;第2组,70克KHumateS100R/动物/天;第3组,140克KHumateS100R/动物/天;和对照组,未添加KHumateS100R(0gKHumateS100R/动物/天)。饲料原料的化学和矿物组成,干物质摄入量(drymatteradvance,drymatter),并记录平均每日体重增加。这些牛在澳大利亚的一个商业屠宰场被作为一个整体屠宰。热标准屠体重量的标准措施,眼肌面积,脂肪深度和覆盖范围,大理石,骨化,肉和脂肪的颜色,在死后24小时的敷料百分比和腰部pH值被记录。发现与分配给组1和对照组的牛相比,分配给组2的牛具有更高的dmi(P=0.003)和饲料转化率(FCR)(P<0.001)。MSA大理石花纹评分对于分配给对照组的牛是最低的(P<0.05),对于分配给第1、2和3组的牛来说是相当的。一起,这些结果表明,增加KHumateS100R的补充水平可以改善car体质量,通过MSA的增加。然而,需要进一步研究补充腐植酸盐对牛肉肌内脂肪相关品质的潜在影响。
Humate may be a valuable livestock feed additive, with potential effects on nutrient utilisation and animal performance. Thus, the aim of this study was to investigate the effect of K Humate S 100R supplementation on the feed intake, liveweight gain, and carcass parameters of Angus steers. Within individual pens, 40 weaned steers were allocated to four treatment groups (n = 10/potassium humate K Humate S100R, Omnia Specialities Australia) for 100 days. The treatment groups included Group 1, 35 g K Humate S100R/animal/day; Group 2, 70 g K Humate S100R/animal/day; Group 3, 140 g K Humate S100R/animal/day; and Control Group, which were not supplemented with K Humate S100R (0 g K Humate S100R/animal/day). Chemical and mineral composition of the feed ingredients, dry matter intake (DMI), and average daily weight gains were recorded. The steers were slaughtered as a single group at a commercial Australian abattoir. Standard measures for hot standard carcass weight, eye muscle area, fat depth and coverage, marbling, ossification, meat and fat colour, dressing percentage and loin pH values at 24-hour postmortem were recorded. It was found that the steers allocated to Group 2 had higher DMI (P = 0.003) and feed conversion ratio (FCR) (P < 0.001) compared with those allocated to Group 1 and the Control Group. The MSA marbling score was lowest for steers allocated to the Control Group (P < 0.05) and comparable for those allocated to Groups 1, 2, and 3. Together, these results demonstrate that increased levels of K Humate S100R supplementation improved the carcass quality, via an increase in MSA. However, further research is warranted on the potential effects of humates supplementation on intramuscular fat associated qualities of beef.