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      Crecimiento y características de canal en corderos Pelibuey puros y cruzados F1 con razas Dorper y Katahdin en confinamiento Translated title: Growth and carcass traits in pure Pelibuey lambs and crosses F1 with Dorper and Katahdin breeds in confinement

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          Abstract

          El objetivo del presente estudio fue evaluar el comportamiento productivo en corral y las características de canal de 36 corderos (machos y hembras) de los genotipos Pelibuey puro, Dorper x Pelibuey y Katahdin x Pelibuey bajo condiciones desérticas del noroeste de México. Después de 85 d de prueba de comportamiento en corral, se sacrificaron todos los corderos para la evaluación de sus canales. Los corderos Dorper x Pelibuey presentaron mayor (P < 0,05) ganancia diaria de peso y consumo diario de alimento que los otros dos genotipos. Sin embargo, entre los tres genotipos no se observaron diferencias (P > 0,05) para rendimiento en canal, área del músculo Longissimus dorsi y espesor de grasa dorsal. Los machos presentaron mayor ganancia diaria de peso (P < 0,01) y menor conversión alimenticia que las hembras. Los pesos de la canal caliente y fría fueron mayores (P < 0,05) en machos que en hembras, pero el rendimiento en canal y el espesor de grasa dorsal fueron similares (P > 0,05) entre ambos sexos. El peso total y el rendimiento de cortes primarios fueron similares (P > 0,05) entre los genotipos y los sexos. Estos resultados sugieren que la raza Dorper puede ser usada en esquemas de cruzamiento para mejorar la producción de carne ovina en zonas áridas como las del noroeste de México.

          Translated abstract

          The aim of this study was to evaluate feedlot performance and carcass characteristics of 36 male and female lambs from the genotypes pure Pelibuey, Dorper x Pelibuey, and Katahdin x Pelibuey under desert conditions in northwestern Mexico. Lambs were slaughtered for carcass evaluation after 85 d of a productive performance test. Dorper x Pelibuey lambs had higher (P < 0.05) daily weight gain and feed intake than the other genotypes. However, there were no differences (P > 0.05) among the three genotypes in carcass yield, Longissimus dorsi muscle area and back-fat thickness. Males presented higher (P < 0.01) daily weight gain and lower (P < 0.01) feed conversion than females. Hot and cold carcasses were heavier (P < 0.05) in males than in females, but carcass yield and back-fat thickness were similar (P > 0.05) between sexes. Yield and total weight of primary cuts were also similar (P > 0.05) among genotypes and sexes. These findings suggest that the Dorper breed can be used in crossbreeding schemes to improve mutton production in arid zones, like in northwestern Mexico.

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          Modificaciones al Sistema de clasificación climática de Koppen.

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            The Voluntary Food Intake of Farm Animals

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              Energy retention of F1 Pelibuey lambs crossbred with breeds for meat production

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                amv
                Archivos de medicina veterinaria
                Arch. med. vet.
                Facultad de Ciencias Veterinarias, Universidad Austral de Chile (Valdivia )
                0301-732X
                2010
                : 42
                : 3
                : 147-154
                Affiliations
                [1 ] Universidad Autónoma de Baja California Mexico
                Article
                S0301-732X2010000300005
                10.4067/S0301-732X2010000300005
                776be060-cf80-428b-8324-fe5ed37b350c

                http://creativecommons.org/licenses/by/4.0/

                History
                Product

                SciELO Chile

                Self URI (journal page): http://www.scielo.cl/scielo.php?script=sci_serial&pid=0301-732X&lng=en
                Categories
                VETERINARY SCIENCES

                General veterinary medicine
                sheep,crossbreeding,growth,carcasses,heat stress,ovinos de pelo,cruzamientos,crecimiento,canales,estrés calórico

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