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Universidad de Colima (UCOL) 2003

EFECTO DEL GEN CUELLO DESNUDO (Na) SOBRE EL BALANCE DE CALCIO Y LA RESPUESTA INMUNE EN GALLINAS CRIOLLAS EN EL ALTIPLANO MICHOACANO

ÁLVAREZ RAMÍREZ. MA. TERESA

Titre : EFECTO DEL GEN CUELLO DESNUDO (Na) SOBRE EL BALANCE DE CALCIO Y LA RESPUESTA INMUNE EN GALLINAS CRIOLLAS EN EL ALTIPLANO MICHOACANO

Auteur : ÁLVAREZ RAMÍREZ. MA. TERESA

Université de soutenance : Universidad de Colima (UCOL)

Grade : Doctor en Ciencias 2003

Résumé
The immune responses of indigenous naked neck (NaNa and Nana) and normally feathered (nana) female birds against Newcastle viral disease were evaluated. Groups of 28 day old female chickens (NaNa, Nana and nana) were immunized with NVD LaSota strain vaccine. Control animals were included. Six weeks later, all pullet were challenged with 1 ELD50 (106 HU) of a velogenic viscerotropic strain NVD (Chimalhuacan). Immunized and control Nana chickens showed better immune responses and natural resistance. The hens showed similar cellular responses and antibody titles during all the production cycle. The balance of Calcium was determined being positive in all the three genotypes. However, nana hens consumed and eliminated more Calcium since, Nana and NaNa genotypes consumed less calcium but fixed and retained it more efficiently, this was reflected in a better production. The concentrations of Calcium were determined in the organs involved in the cycle (duodenum, kidney, uterus and bone). Results exhibited significant diferences among the genotypes that correlated with the structural changes observed in the medullar, cancellus, and cortical bone. On the other hand, the values of Calcium in sera were determined in the different stages of shell formation. Results showed that there are differences in Calcium values during every stage of egg shell formation, as well as among the genotypes and during the posture time.

Mots clés : Indigenous naked neck hens, immune response, Newcastle virus, and Calcium balance

Annonce

Résumé étendu

Page publiée le 8 février 2015, mise à jour le 9 août 2017