Historical Overview of the Effect of -Adrenergic Agonists on Beef Cattle Production. Academic Article

abstract

• Postnatal muscle hypertrophy of beef cattle is the result of enhanced myofibrillar protein synthesis and reduced protein turnover. Skeletal muscle hypertrophy has been studied in cattle fed -adrenergic agonists (-AA), which are receptor-mediated enhancers of protein synthesis and inhibitors of protein degradation. Feeding -AA to beef cattle increases longissimus muscle cross-sectional area 6% to 40% compared to non-treated cattle. The -AA have been reported to improve live animal performance, including average daily gain, feed efficiency, hot carcass weight, and dressing percentage. Treatment with -AA increased mRNA concentration of the 2 or 1-adrenergic receptor and myosin heavy chain IIX in bovine skeletal muscle tissue. This review will examine the effects of skeletal muscle and adipose development with -AA, and will interpret how the use of -AA affects performance, body composition, and growth in beef cattle.

authors

• Smith, Stephen

published proceedings

• Asian-Australas J Anim Sci

altmetric score

• 3

author list (cited authors)

• Johnson, B. J., Smith, S. B., & Chung, K. Y.

citation count

• 62

complete list of authors

• Johnson, Bradley J||Smith, Stephen B||Chung, Ki Yong

publication date

• May 2014

publisher

• Asian Australasian Association of Animal Production Societies  Publisher

published in

• Asian-Australasian Journal of Animal Sciences  Journal

keywords

• Beef Cattle
• Skeletal Muscle
• β-adrenergic Agonists

PubMed Central ID

• 25050012

Digital Object Identifier (DOI)

• 10.5713/ajas.2012.12524

start page

• 757

end page

• 766

volume

• 27

issue

• 5