Data/hora: 25/05/2024 17:50:40

Biblioteca(s): 	Embrapa Suínos e Aves.	
Data corrente: 	01/11/2019	
Data da última atualização: 	01/11/2019	
Autoria: 	AROEIRA, C. N.; FEDDERN, V.; GRESSLER, V.; MOLOGNONI, L.; DAGUER, H.; DALLA COSTA, O. A.; LIMA, G. J. M. M. de; CONTRERAS-CASTILL0, C. J.	
Afiliação: 	CAROLINA N. AROEIRA, ESALQ; VIVIAN FEDDERN, CNPSA; VANESSA GRESSLER, CNPSA; LUCIANO MOLOGNONI, MAPA; HEITOR DAGUER, MAPA; OSMAR ANTONIO DALLA COSTA, CNPSA; GUSTAVO JULIO MELLO M. DE LIMA, CNPSA; CARMEN J. CONTRERAS-CASTILL0, ESALQ.	
Título: 	Determination of ractopamine residue in tissues and urine from swine fed meat and bone meal.	
Ano de publicação: 	2019	
Fonte/Imprenta: 	Food Additives & Contaminants: Part A, v. 36, n. 3, p. 424-433, 2019.	
DOI: 	10.1080/19440049.2019.1567942	
Idioma: 	Inglês	
Conteúdo: 	Abstract: In many countries, ractopamine hydrochloride (RAC) is allowed to be used in animal production as a &#946;agonist, which is an energy repartitioning agent able to offer economic benefits such as increased muscle and decreased fat deposition, feed conversion improvement and an increase in average daily weight gain. However, some countries have banned its use and established strict traceability programmes because of pharmacological implications of &#946;-agonist residues in meat products. In Brazil, commercial RAC is controlled (5?20 mg kg&#8722;1) and only added to pig diet during the last 28 days before slaughter. However, the control is more difficult when co-products, like meat and bone meal (MBM), which can be produced from RAC treated animals, are part of the feed composition. Therefore, a study was undertaken to evaluate the presence of RAC residue concentrations in urine and tissues of gilts (n = 40) in four dietary groups: 0%, 7%, 14% and 21% (w/w) of MBM-containing RAC (53.5 µg kg&#8722;1). The concentration of RAC residues in MBM, pig tissues and urine was determined by LC?MS. Low RAC concentrations were detected in muscle, kidney, liver and lungs (limit of detection = 0.15, 0.5, 0.5 and 1.0 µg kg&#8722;1, respectively); however, no RAC residues were quantified above the limit of quantification (0.5, 2.5, 2.5 and 2.5 µg kg&#8722;1, respectively). In urine, the RAC concentration remained below 1.35 µg L&#8722;1. These data suggest that MBM (containing 53.5 µg kg&#8722;1 RAC) added to diet up to 21% (w/w) could hamper the trade where RAC is restricted or has zero-tolerance policy	
Palavras-Chave: 	Carne de porco; Pig fed meat; Pork production.	
Thesagro: 	Carne; Farinha de Osso; Suíno.	
Thesaurus Nal: 	Analytical methods; Feed additives; Food safety.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Suínos e Aves (CNPSA)	
Exemplares: 	CNPSA - (21671-1) - UPC - AP - DD -  -  -  - DIS