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Descripción
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| The influence of gender [intact females (IF), surgically castrated males (CM), and immune-castrated males (IMC)] and terminal sire line [Duroc (DU) and Pietrain (PI)] on growth performance and carcass quality was studied in pigs from 23.5 to 134 kg BW. The female line used was Large White × Landrace in all cases. Each treatment (3 × 2) was replicated 5 times (a pen with 10 pigs). The CM were castrated at 4 d of age and the IMC pigs were immunized against GnRF at 87 and 137 d of age (34 d before slaughter). Backfat thickness at P2 and intramuscular fat (ITMF) at Longissumus dorsi were recorded. The IMC and CM had higher (1.08 vs. 1.08 vs. 1.02 kg/d; P ? 0.001) ADG than IF. Furthermore, CM ate more feed (2.59 vs. 2.36 vs. 2.35 kg/d; P ? 0.001) than IMC and IF. Consequently, IMC had better (2.17 vs. 2.40 vs. 2.31; P ? 0.001) F:G ratio than CM, with IF being intermediate. | |
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Internacional
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Si |
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Nombre congreso
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ADSA-ASAS2011 Joint Annual Meeting |
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Tipo de participación
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960 |
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Lugar del congreso
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Nueva Orleans |
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Revisores
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Si |
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ISBN o ISSN
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00218812 |
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DOI
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Fecha inicio congreso
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10/07/2011 |
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Fecha fin congreso
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14/07/2011 |
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Desde la página
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407 |
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Hasta la página
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407 |
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Título de las actas
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Journal of Animal Science, 89 |