Comparison of parasitological and productive traits of Criollo lambs native to the central Mexican Plateau and Suffolk lambs experimentally infected with Haemonchus contortus
Por:
Alba-Hurtado F., Romero-Escobedo E., Munoz-Guzman, MA, Torres-Hernández G., Becerril-Pérez C.M.
Publicada:
20 sep 2010
Resumen:
The study compares the parasitological and productive traits of Criollo lambs native to the central Mexican Plateau (CNCMP) and Suffolk (SU) lambs experimentally infected with Haemonchus contortus. CNCMP lambs (n = 20) and SU lambs (n = 15) were infected with L3 of H. contortus while five lambs of each genotype were kept as controls. Fecal egg count (FEC), packed cell volume (PCV), blood eosinophil number (BEN), ocular mucous membrane color (as measured by the FAMACHA index), changes in body condition score (BCS) and cumulative live weight gain (CLWG) were measured weekly during a 20-week period. On week 20, all animals were euthanized and the number of adult worms (AW) in the abomasum was counted. Infected SU lambs had higher (p < 0.05) FEC and AW mean values compared to CNCMP lambs, which had a higher mean BEN count (p < 0.05). Infected lambs had lower PCV values than controls, regardless of genotype, and had a negative correlation (r = -0.84, p < 0.05) with the FAMACHA index. BCS te
Filiaciones:
Alba-Hurtado F.:
Univ Nacl Autonoma Mexico, Dept Ciencias Biol, Fac Estudios Super Cuautitlan, Mexico City 04510, DF, Mexico
Romero-Escobedo E.:
Univ Nacl Autonoma Mexico, Dept Ciencias Biol, Fac Estudios Super Cuautitlan, Mexico City 04510, DF, Mexico
Munoz-Guzman, MA:
Univ Nacl Autonoma Mexico, Dept Ciencias Biol, Fac Estudios Super Cuautitlan, Mexico City 04510, DF, Mexico
Torres-Hernández G.:
Programa de Ganadería, Colegio de Postgraduados, 56230 Montecillo, Edo. de México, Mexico
Becerril-Pérez C.M.:
Programa de Ganadería, Colegio de Postgraduados, 56230 Montecillo, Edo. de México, Mexico
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