Use of beta-adrenergic agonists in livestock (original) (raw)
Beta-adrenergic agonists, or β-agonists, are non-hormonal growth promotants that help animals put on muscle instead of fat. The more scientifically accepted name for agents of this class is a , not a growth promotor. Ractopamine (brand names include Optaflexx and Paylean) and zilpaterol (brand name Zilmax) received FDA approval in 1999 and 2003, respectively. They are also approved in Mexico, South Africa, and Canada. 160 countries restrict the importation of beef which has been raised with β-agonists. Temple Grandin was one of the first to describe the potential problems with the supplement. Cattle may arrive at the plant with a stiff gait, acting like they have both stiff muscles and sore feet. The problem could be muscle fatigue. Zilpateral enhances the growth of "fast-twitch" fibers, a
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| dbo:abstract | Beta-adrenergic agonists, or β-agonists, are non-hormonal growth promotants that help animals put on muscle instead of fat. The more scientifically accepted name for agents of this class is a , not a growth promotor. Ractopamine (brand names include Optaflexx and Paylean) and zilpaterol (brand name Zilmax) received FDA approval in 1999 and 2003, respectively. They are also approved in Mexico, South Africa, and Canada. 160 countries restrict the importation of beef which has been raised with β-agonists. Temple Grandin was one of the first to describe the potential problems with the supplement. Cattle may arrive at the plant with a stiff gait, acting like they have both stiff muscles and sore feet. The problem could be muscle fatigue. Zilpateral enhances the growth of "fast-twitch" fibers, a type of muscle fiber that fatigues more easily. On August 16, 2013 Merck & Co., the makers of Zilmax, suspended the sale of the product in the US and Canada. But problems may exist with all β-agonists supplementation, and not just for animals. (en) |
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| dbo:wikiPageWikiLink | dbr:Ruminants dbr:Salbutamol dbr:Clenbuterol dbr:Zilpaterol dbr:Feed_conversion_ratio dbc:Livestock dbr:Fast_twitch_muscle dbr:FDA dbr:Cimaterol dbr:Temple_Grandin dbc:Beta-adrenergic_agonists dbr:Merck_&_Co. dbr:Ractopamine dbr:Substituent dbr:Phenylethanolamines dbr:Repartitioning_agent |
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| dcterms:subject | dbc:Livestock dbc:Beta-adrenergic_agonists |
| rdfs:comment | Beta-adrenergic agonists, or β-agonists, are non-hormonal growth promotants that help animals put on muscle instead of fat. The more scientifically accepted name for agents of this class is a , not a growth promotor. Ractopamine (brand names include Optaflexx and Paylean) and zilpaterol (brand name Zilmax) received FDA approval in 1999 and 2003, respectively. They are also approved in Mexico, South Africa, and Canada. 160 countries restrict the importation of beef which has been raised with β-agonists. Temple Grandin was one of the first to describe the potential problems with the supplement. Cattle may arrive at the plant with a stiff gait, acting like they have both stiff muscles and sore feet. The problem could be muscle fatigue. Zilpateral enhances the growth of "fast-twitch" fibers, a (en) |
| rdfs:label | Use of beta-adrenergic agonists in livestock (en) |
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