Author:
KUNDU A,SINGH D P,MOHAPATRA S C
Abstract
Birds (433) of both sexes developed from 8 genetically diverse lines of chickens like Aseel, Kadakanath, Naked Neck and Frizzle fowl along with imported breeds Dahlem Red, White Leghorn, Synthetic Dan Line broiler (SDL) and Naked Neck broiler (NNB) were evaluated for immunocompetence traits, viz. haemagglutinin test (HA), mercaptoethanol resistant (MER or IgG), classical pathway (CPW) and alternate pathway (APW) response to sheep red blood cells (SRBCs) at 0, 5, 12 and 19 days post immunization (pi), CMI response (as foot index against PHA-P), phagocytic index (PI) using carbon clearance test. Per cent mortality was also recorded based on whole hatch from which sample birds were drawn for each group from 0–20 weeks of age. Based on the results of immunocompetence traits, a scoring index was formed and various genotypes were ranked. Dahlem Red exhibited highest HA response followed by indigenous breeds. SDL broilers and White Leghorns ranked lowest for HA response. Dahlem Red excelled all other genetic stocks for IgG, FI and only next in order to Aseel and Kadakanath for CPW and APW. The index was constructed giving equal weightage to each of the traits. Broilers and White Leghorns, which ranked lowest, exhibited highest mortality.
Publisher
Indian Council of Agricultural Research, Directorate of Knowledge Management in Agriculture
Subject
General Veterinary,Animal Science and Zoology
Reference18 articles.
1. Almid I. 1981. Indirect selection of bulls for improved resistance to diseases in dairy cattle. Livestock production Science 3: 321–27.
2. Buchmann H and Meyer J. 1989. An immunocompetence profile in swine. Improving Genetic Disease Resistance in Farm Animals. pp 145–52. (Eds)Vanderzijpp A J and Sybesma W.
3. Cheng S and Lamont S J. 1990. Selection for general immunocompetence in chickens. Proceeding of the Fourth World Congress on Genetics Applied to Livestock Production. Edinburgh 23–27 July XVI Poultry, Fish and Horse Genetics and Breeding, Growth and Reproduction, Immune Response and Disease Resistance 58–61 (fide Animal Breeding Abstract 58 (12)).
4. Cheng S and Lamont S J.1988. Genetic analysis of immunocompetence measures in a White Leghorn chicken line. Poultry Science 67: 989–95.
5. Hersh E M, Guttermann J U, Alexamian R, Lotova E and Murphy G. 1981. A parameter host defense assay system for evaluating biological response modifier therapy of human cancer. American Association of Cancer Research and Clinical Oncology 22: 372–75.