Comparison of the timing of development of immunity in Romney lambs from resistant and resilient selection lines

Content Partner: Lincoln University. Variation in the timing of development of immunity to gastro-intestinal nematode parasites was assessed in resistant and resilient Romney selection lines exposed to mixed natural infection. From weaning, at mean 92 days-of-age, animals (n = 53) were sampled for f...

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Main Authors: Hamie, JC, McAnulty, RW, Logan, CM, Lundberg, S, Greer, Andrew
Format: Article
Language:English
Online Access:Request full text
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Summary:Content Partner: Lincoln University. Variation in the timing of development of immunity to gastro-intestinal nematode parasites was assessed in resistant and resilient Romney selection lines exposed to mixed natural infection. From weaning, at mean 92 days-of-age, animals (n = 53) were sampled for faecal egg count (FEC) expressed as eggs per gram of faeces (epg), saliva for immunoglobulin (IgG and IgA) determination and fasted live weight (LW) every 10 days until 351 days-of-age. Overall, mean back-transformed FEC were consistently low for resistant animals (