Effect of dietary aflatoxin on fertility, hatchability, and progeny performance of broiler breeder hens.
AUTOR(ES)
Howarth, B
RESUMO
The effects of aflatoxin on egg production, fertility, hatchability, and progeny performance were investigated by feeding dietary aflatoxin at dose levels of 0,5, and 10 mug/g to mature broiler breeder hens for 4 weeks. Sixteen hens were used for each dietary dose level. Egg production decreased significantly during weeks 3 and 4 after initiation of toxin feeding for hens fed 10 and 5 mum of aflatoxin per g of diet respectively. Whereas fertility was not affected by dietary aflatoxin, hatchability of fertile eggs decreased significantly within week 1 of toxin feeding. Hatchability of fertile eggs collected during week 1 of the treatment period was 95.1, 68.9, and 48.5% for the control, 5- and 10-mug/g groups, respectively. At the dose levels used in this study, no latent effects of the aflatoxin or its metabolites were observed on the performance of surviving chicks. Six hens from each experimental groups were necropsied at the end of the 4-week treatment period. These birds exhibited typical symptoms of aflatoxicosis, including enlarged, fatty and friable livers, and enlarged spleens.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=291175Documentos Relacionados
- Effects of dietary arginine supplementation on broiler breeder egg production and hatchability
- Effect of Incubator Type and Broiler Breeder Age on Hatchability and Chick Quality
- The effect of arginine dietary supplementation in broiler breeder hens on offspring humoral and cell-mediated immune responses
- Effect of breeder age and storage conditions of Japanese quail eggs on hatchability, quail neonate quality, and Bursa of Fabricius characteristics
- NÍVEIS BAIXOS DE AFLATOXINAS DIETÉTICAS E ADSORVENTES NO DESEMPENHO DE MATRIZES DE CORTE E DE SUA PROGÊNIE