Simple Summary The environmental impact of three beef production systems was assessed
using a deterministic model. Conventional beef production (finished in feedlots with growth …

Simple Summary The beef industry faces the challenge of increasing the supply of high-
quality protein to an ever-growing global population. Improving nutrient use efficiency is …

This study is a meta-analysis of the effects of the beta-agonists zilpaterol hydrochloride (ZH)
and ractopamine hydrochloride (RAC) on feedlot performance, carcase characteristics of …

The objective of this study was to quantify the environmental and economic impact of
withdrawing growth-enhancing technologies (GET) from the US beef production system. A …

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 …

For more than 50 years, beef cattle producers have safely used growth promotants to
enhance muscle leanness, increase average daily gain, stimulate feed intake moderately …

Muscle fiber characteristics account for meat quality and muscle fibers are mainly classified
into three or more types according to their contractile and metabolic properties. However, the …

Abstract Steers (n= 480; 22% with black hides and 78% with red hides) were used to study
the effects of shade and feeding zilpaterol hydrochloride (ZH) on performance, carcass …

British× Continental steers (n= 168; 7 pens/treatment; initial BW= 362 kg) were used to
evaluate the effect of dose/payout pattern of trenbolone acetate (TBA) and estradiol-17β (E2) …

Our objectives were to evaluate the dose/payout pattern of trenbolone acetate (TBA) and
estradiol-17β (E2) implants and feeding of zilpaterol hydrochloride (ZH) on performance and …