title: Variability of resistance in Black Bengal goats naturally infected with Haemonchus contortus.
abstract: A total 290 Black Bengal goats (6 buck, 109 doe and 175 kids born from 11 sires) were studied to evaluate the variability of resistance in Black Bengal goats naturally infected with Haemonchus contortus. The variability of resistance in Black Bengal goat was studied for both genetic and non-genetic factors like village, sex, age dam, sire, dam resistance group and offspring resistance group. Male kids have slightly higher resistance than female kids although it was not significant. Resistance of kids was increased as age increases and kid population showed significantly different resistance status among the offspring resistant groups. The doe population showed significantly different LEPG as per the resistance group in all the collections. The present study found that the resistance of kids under sire were varied significantly and observed that the kids under sire 1, 6-8 were significantly more resistant than the kids of the sire 2, 5 and 11 in 3rd collection and it is also noticed that maternal genetic effect has a very little impact on resistance of kids. Males (buck) were most resistant and the kids were least resistant and the resistance of dam was in between the male and kids population.
authors.affiliation: Department of Animal Genetics and Breeding, West Bengal University of Animal and Fishery Sciences, Kolkata, 700037 India.
authors.forename: Ratnesh
authors.initials: R
authors.lastname: Kumar
authors.affiliation: Division of Animal Genetics, Indian Veterinary Research Institute, Izatnagar, Bareilly, 243122 Uttar Pradesh India.
authors.forename: Sanjeev
authors.initials: S
authors.lastname: Ranjan
authors.affiliation: Division of Animal Genetics, Indian Veterinary Research Institute, Izatnagar, Bareilly, 243122 Uttar Pradesh India.
authors.forename: P Guru
authors.initials: PG
authors.lastname: Vishnu
authors.affiliation: Indian Veterinary Research Institute, Izatnagar, Bareilly, 243122 Uttar Pradesh India.
authors.forename: Mamta
authors.initials: M
authors.lastname: Negi
authors.affiliation: Department of Animal Genetics and Breeding, West Bengal University of Animal and Fishery Sciences, Kolkata, 700037 India.
authors.forename: P K
authors.initials: PK
authors.lastname: Senapati
authors.affiliation: Department of Veterinary Parasitology, College of Veterinary Science-Proddatur, Proddatur, Andhra Pradesh India.
authors.forename: V Gnani
authors.initials: VG
authors.lastname: Charita
keywords: Black Bengal goats; Haemonchus contortus; Variability of resistance and genetic and non-genetic factors