Effects of heat stress on some blood parameters and egg production of Shika Brown layer chickens transported by road.
Biol Res
; 43(2): 183-9, 2010.
Article
em En
| MEDLINE
| ID: mdl-21031263
ABSTRACT
The effects of vitamins C and E on layer chickens transported by road for 6 h during the hot dry season were investigated. Two experimental groups consisting of thirty Shika Brown layers were separately administered vitamins C and E orally just before transportation, while another 30 layers, which were only given sterile water, served as control. Blood samples analyzed before and after transportation in the control layers showed a decrease (p<0.05) in total white blood cell, (p<0.01) lymphocyte and monocyte values, and a significant (p<0.05) and (p<0.001) increase in the values of eosinophils and heterophils post-transportation, respectively. In the experimental groups, post-transportation values of total white blood cells, eosinophils and monocytes were not different (p>0.05) from those obtained before transportation. Heterophil/lymphocyte values were highest in the control group. The result showed that transportation was stressful for the control layers. Post-transportation egg production was not significantly (p>0.05) different in the vitamin E treated group, but values recorded for the vitamin C and control groups were significantly (p<0.05) and (p<0.001) reduced compared to pre-transportation. In conclusion, vitamins C and E administration ameliorated the adverse effect of road transportation stress during the hot dry season.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Ácido Ascórbico
/
Vitamina E
/
Vitaminas
/
Galinhas
/
Transtornos de Estresse por Calor
/
Oviparidade
Idioma:
En
Ano de publicação:
2010
Tipo de documento:
Article