Effect of breed type and ionophore supplementation on growth and carcass characteristic in feedlot hair lambs

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AudienciaPúblico en generales_ES
CoberturaMéxicoes_ES
Fecha de ingreso2026-09-15T00:30:03Z
Fecha de publicación2010-01-01
ResumenThe effects of supplementing feedlot diets with ionophores and breed type were assessed on growth rate and carcass characteristics in hair lambs. Twenty four intact males, 12 Pelibuey × Dorper (PDo) and 12 Pelibuey × Damara (PDa) lambs, 17.9 ± 3.7 kg initial weight, were housed in individual pens for a 60-d feeding trial. The lambs were assigned randomly into four diets: control without additives (C); 25 µg/g monensin (M); 28 µg/g salinomycin (S); 28 µg/g S for 20 d, and 25 µg/g M for the next 40 d (SM). Each diet was supplied to six lambs. Data were analyzed as a randomized complete block design in a 4 × 2 factorial arrangement, with four diets and two breed types of hair lambs (PDo and PDa). All diets were formulated to contain 14% CP and 2.6 Mcal ME/kg dry matter. At the end of the feeding trial carcass images were recorded in the last intercostal space (12th and 13th ribs) using ultrasound equipment to measure the Longissimus dorsi muscle area and subcutaneous fat (SF). The average daily gain (ADG), daily dry matter intake, feed:gain ratio, subcutaneous fat and Longissimus dorsi area were not affected by ionophore supplementation.. The Pelibuey × Dorper group tended to show better average daily gain than Pelibuey × Damara (262 g/d and 235 g/d, respectively). Daily dry matter intake, feed:gain ratio and subcutaneous fat were not affected by breed type. The Pelibuey × Dorper lambs had greater Longissimus dorsi area (16.74 cm²) than the Pelibuey × Damara (14.29 cm²) lambs. The growth rate was not influenced by the inclusion of ionophores. Pelibuey × Dorper lambs showed better average daily gain and carcass characteristics than Pelibuey × Damara lambs.es_ES
Doihttps://doi.org/10.1590/s1516-35982010000300024es_ES
URIhttps://riuat.uat.edu.mx/handle/123456789/2001
Idiomaeses_ES
EditorialFapUNIFESP (SciELO)es_ES
RelaciónRevista Brasileira de Zootecniaes_ES
URL relacionadohttps://doi.org/10.1590/s1516-35982010000300024es_ES
DerechosAcceso abierto (PDF local verificado)es_ES
Licenciahttp://purl.org/coar/access_right/c_abf2es_ES
FuenteRevista Brasileira de Zootecnia
TítuloEffect of breed type and ionophore supplementation on growth and carcass characteristic in feedlot hair lambses_ES
TipoArtículoes_ES
ArbitradoHa sido Arbitradoes_ES
AutorSalinas-Chavira, Jaime
AutorLara-Juarez, Alfredo
AutorGil-González, Abraham
AutorJimenez-Castro, Jorge
AutorGarcia-Castillo, Ramón
AutorRamírez-Bribiesca, Efrén
AutorSalinas-Chavira, Jaimees_ES
AutorLara-Juarez, Alfredoes_ES
AutorGil-González, Abrahames_ES
AutorJimenez-Castro, Jorgees_ES
AutorGarcia-Castillo, Ramónes_ES
AutorRamírez-Bribiesca, Efrénes_ES
InstituciónUniversidad Autónoma de Tamaulipas
InstituciónUniversidad Autónoma de Tamaulipases_ES
Número3es_ES
Rango de páginas633-637es_ES
URL relacionadahttps://doi.org/10.1590/s1516-35982010000300024
Tipo de artículoIndexado
Tipo de artículoIndexadoes_ES
Volumen39es_ES

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