Effects of lubabegron supplementation on live performance, carcass characteristics, and mobility of Holstein steers

IF 1.4 Q3 AGRICULTURE, DAIRY & ANIMAL SCIENCE
William C. Kayser , Randall C. Raymond , Phillip J. Rincker , Sara Linneen , Cory T. Herr
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引用次数: 0

Abstract

Objective

The objectives of this study were to assess the effects of feeding Lubabegron (LB; Experior, Elanco, Greenfield, IN) for 0, 28, 56, or 84 d on live growth, car- cass, and mobility in Holstein steers.

Materials and Methods

Holstein steers (n = 438; 521 kg ± 35.5 kg) were used in a completely randomized study with 4 duration treatments: control, LB for 28 d, LB for 56 d, and LB for 84 d. Feed intake, BW, and car- cass data were all measured and analyzed on an individual basis.

Results and Discussion

In the pooled analysis, steers fed LB had greater total gain, ADG and G:F on a live and yield-adjusted basis relative to the controls. Lubabegron treated cattle had greater hot carcass weight, dressing per- cent and ribeye area, and decreased marbling score and average yield grade compared with the control treatment. There were no differences detected between LB or control steers in mobility at either shipment to abattoir or in lai- rage.

Implications and Application

Supplementation with LB favorably altered growth and carcass responses. Steers fed LB had no differences in mobility or other health maladies during the feeding period. These results indicate that feedyard producers can utilize LB without negatively affecting feeding performance or carcass quality.

补充卢巴贝琼对荷斯坦阉牛活体表现、胴体特征和活动能力的影响
本研究的目的是评估饲喂 Lubabegron(LB;Experior,Elanco,Greenfield,IN)0、28、56 或 84 天对荷斯坦阉牛活体生长、体重和活动能力的影响。结果与讨论在汇总分析中,与对照组相比,饲喂枸橼酸的牛在活重和产量调整后的总增重、ADG 和 G:F 都更高。与对照组相比,经 Lubabegron 处理的牛的胴体热重、拌料百分比和肋眼面积更大,而大理石花纹评分和平均产量等级则有所下降。在运往屠宰场或在屠宰过程中,枸杞多糖和对照组牛的活动能力均无差异。饲喂枸杞的牛在饲养期间的活动能力或其他健康问题方面没有差异。这些结果表明,饲养场生产商可以利用枸杞而不会对饲养性能或胴体质量产生负面影响。
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来源期刊
Applied Animal Science
Applied Animal Science AGRICULTURE, DAIRY & ANIMAL SCIENCE-
CiteScore
3.00
自引率
6.70%
发文量
68
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