Summary
The optimum protein levels were determined for growing and finishing pigs in a tropical environment.
There were statistically significant differences in daily live-weight gain and feed conversion efficiency between pigs fed a diet containing 16 per cent crude protein and those receiving 18 per cent crude protein. No differences in response were found to diets containing 12 and 13 per cent crude protein. Feed conversion efficiency improved with increased dietary levels of crude protein. Castrate male pigs grew significantly faster than female pigs.
Résumé
Les quantités optimales de protéine brute ont été déterminées pour la croissance et l’engraissement des porcs en milieu tropical.
Il y avait des différences statistiquement significatives dans les gains journaliers de poids et les indices de consommation, entre des porcs recevant un régime à 16 p. 100 de protéine brute et d’autres recevant un régime à 18 p. 100. Aucune différence ne fut observée lors de la comparaison des régimes à 12 et 13 p. 100. Les indices de consommation s’amélioraient avec l’accroissement des rations en protéine brute. Les mâles castrés avaient une croissance significativement plus rapide que les femelles.
Niveles optimos de proteina cruda para el crecimiento y acabado de cerdos en un ambiente tropical.
Sumario
Se determinaron los niveles optimos de proteina para el crecimiento y el acabado de cerdos en un ambiente tropical.
Hubieron diferencias que estadísticamente tuvieron significado, en las ganancias de peso diario y en la eficiencia para la conversión de alimentos entre cerdos alimentados con una dieta conteniendo 16 por ciento de proteina cruda y cerdos que recibían 18 por ciento de proteina cruda. No se encontró ninguna differencia en la respuesta de animales alimentados con dietas conteniendo 12 y 13 por ciento de proteina cruda. La eficiencia en la conversión de alimentos mejoró conforme se aumentaban los niveles de proteina cruda de la dieta. Los cerdos machos castrados tuvieron un crecimiento que fué signíficativamente mas rápido que el de las cerdas.
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Devendra, C., Clyde Parris, E.C. Optimum crude protein levels for growing and finishing pigs in a tropical environment. Trop Anim Health Prod 2, 162–166 (1970). https://doi.org/10.1007/BF02359684
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DOI: https://doi.org/10.1007/BF02359684