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| Schou, T.; Permin, A.; Roepstorff, A.; Sorensen, P.; Kjaer, J.. |
| 1. The objective of the study was to compare the establishment and effect of Ascaridia galli infections in 4 different layer-lines. 2. A total of 160 birds comprising 4 different commercial layer-lines, ISA Brown, New Hampshire, Skalborg and a cross of New Hampshire(NH) and Skalborg (Sk), were infected with A. galli eggs. The birds were examined for the presence of parasite eggs and parasites at weeks 3, 6 and 9 post infection (pi). 3. At week 6 pi the chickens of the NH line harboured more larvae compared with the three other lines. The Sk line chickens excreted more A. galli eggs throughout the study compared with the other lines. Female worms in the Sk line were more fecund than the worms in the other lines. Male and female worms recovered from the Sk... |
| Tipo: Journal paper |
Palavras-chave: Health and welfare. |
| Ano: 2003 |
URL: http://orgprints.org/1858/1/Comparative_genetic_resistance.pdf |
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