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|Title:||Preliminary analysis of sire effects on resistance to gastrointestinal nematode infection in Angora and Cashmere goats||Contributor(s):||Olayemi, Muyiwa (author); Walkden-Brown, Steve William (author) ; Van Der Werf, Julius Herman (author) ; Le Jambre, Leo Frederick (author)||Publication Date:||2001||Handle Link:||https://hdl.handle.net/1959.11/4547||Abstract:||Genetic resistance to gastro-intestinal nematode infection (GIN) is being investigated on two properties in northern NSW, Australia. Results from natural infections during the first year of a 5-year investigation are presented. Data consists of faecal egg counts (FEC) after natural infection (predominantly with 'Haemonchus contortus') of 222 and 220 progeny of 6 Angora and 9 Cashmere bucks, respectively. FEC^0.33 measured at 5 (FEC5) but not 3 (FEC3) months of age differed significantly among sires in both breeds. Oral vaccination of kids at 1 and 2 months of age with irradiated L3 larvae of 'Trichostrogylus colubriformis' did not influence FEC3 or FEC5. Heritability estimates for FEC5^0.33 were 0.25 ± 0.21 and 0.23 ± 0.19 for Angora and Cashmere goats respectively. The phenotypic correlation between FEC5 and weight at 5 months was -0.21 (P<0.05) in Angora goats and non-significant in Cashmere goats. These preliminary findings are encouraging and broadly consistent with other studies in sheep and some other breeds of goat.||Publication Type:||Conference Publication||Conference Name:||14th Conference of the Association for the Advancement of Animal Breeding and Genetics, Queenstown, New Zealand, 30th July - 2nd August, 2001||Source of Publication:||Proceedings of the 14th Conference of the Association for the Advancement of Animal Breeding and Genetics: Biotechnology, p. 203-206||Publisher:||AAABG: Association for the Advancement of Animal Breeding and Genetics||Place of Publication:||Armidale, Australia||ISSN:||1328-3227||Field of Research (FOR):||070708 Veterinary Parasitology||Peer Reviewed:||Yes||HERDC Category Description:||E1 Refereed Scholarly Conference Publication||Other Links:||http://www.aaabg.org/livestocklibrary/2001/ab01048.pdf
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