The influence of dietary calcium and phosphorus on tibial dyschondroplasia in broiler chickens

The incidence and severity of tibial dyschondroplasia in broiler chickens were increased by feeding rations containing high levels of phosphorus relative to the level of calcium. Tibial dyschondroplasia was not eliminated by feeding a ration containing 1.5% calcium and 0.5% available phosphorus. Bef...

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Bibliographic Details
Published in:Avian diseases 1987-10, Vol.31 (4), p.771-775
Main Authors: Riddell, C, Pass, D.A
Format: Article
Language:English
Subjects:
Animals
BONE DISEASES
BONE FORMATION
BROILER CHICKENS
CALCIO
CALCIUM
Calcium, Dietary - pharmacology
Chickens - growth & development
Dietary phosphorus
Enchondromatosis - pathology
Enchondromatosis - veterinary
ENFERMEDADES OSEAS
Epiphyses
FORMACION OSEA
FORMATION DES OS
FOSFORO
Growth Plate - pathology
HUESOS DE LOS MIEMBROS
Lesions
LIMB BONES
Male
OS DES MEMBRES
Osteochondrodysplasias
Osteochondrodysplasias - veterinary
OSTEOPATHIE
PHOSPHORE
PHOSPHORUS
Phosphorus - pharmacology
POLLO DE ENGORDE
POULET DE CHAIR
Poultry Diseases - pathology
Poultry Diseases - physiopathology
Rationing
Rickets
Tibia
Tibia - growth & development
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Summary:The incidence and severity of tibial dyschondroplasia in broiler chickens were increased by feeding rations containing high levels of phosphorus relative to the level of calcium. Tibial dyschondroplasia was not eliminated by feeding a ration containing 1.5% calcium and 0.5% available phosphorus. Before typical dyschondroplasia developed, chickens fed a high level of phosphorus had uniformly thickened growth plates at 2 weeks of age. The majority of this thickening was due to an increase in the zone of proliferation, identical to that which occurs in calcium-deficiency rickets. /// Se incrementó la incidencia y severidad de la discondroplasia de la tibia en pollos de engorde cuando se los alimentó con raciones que contenían niveles altos de fósforo con relación a los niveles de calcio. Cuando se alimentó a los pollos con una ración que contenía 1.5% de calcio y 0.5% de fósforo disponible no se pudo eliminar la discondroplasia de la tibia. Antes de desarrollarse la discondroplasia de la tibia, los pollos alimentados con una dieta de alto contenido de fósforo presentaban zonas de crecimiento uniformemente ensanchadas a las 2 semanas de edad. La mayor parte de este ensanchamiento se debía a un incremento en la zona de proliferación, similar al que ocurre en el raquitismo por deficiencia de calcio.
ISSN:0005-2086
1938-4351
DOI:10.2307/1591029