Please use this identifier to cite or link to this item:
https://hdl.handle.net/1959.11/22816
Title: | Ascaridia galli challenge model in laying hens | Contributor(s): | Sharma, Nisha (author); Hunt, Peter W (author); Hine, Brad C (author); Swick, Robert A (author)![]() ![]() |
Publication Date: | 2017 | Open Access: | Yes | DOI: | 10.17582/journal.jap/2017/4.3.41.46![]() |
Handle Link: | https://hdl.handle.net/1959.11/22816 | Open Access Link: | http://nexusacademicpublishers.com/table_contents_detail/5/910/html![]() |
Abstract: | Ascaridia galli is one of the most prevalent helminths in free-range laying hens. This study was conducted to establish a reliable infection model for A. galli in laying hens. Materials and methods : A total of 20 Lohmann brown hens of 19 weeks age were assigned to 4 treatment groups (n=5 per group). Hens of group 1 were orally inoculated with 1000 A. galli eggs stored at 26°C, group 2 with 1000 A. galli eggs stored at 4°C and transferred to 26°C prior to inoculation. Hens were infected 3 times over a week period. Hens of group 3 were orally inoculated with 500 A. galli eggs stored at 26°C, 6 times over 2 week period. Hens in group 4 were infected with adult A. galli via cloaca. Intestinal immature worms were counted from 2 hens from each group after slaughter at 2 weeks post infection (p.i).Excreta was collected and analysed for A. galli eggs at 8 and 14 weeks p.i.. Blood was collected to examine A. galli specific antibodies and intestinal A. galli worms were counted at 16 weeks p.i. results: Hens in group 3 had the highest A. galli worm counts (P<0.001) after slaughter at 16 weeks p.i. compared to other groups. Excreta A. galli egg counts were highest in group 1 and 3 (P=0.02). Serum antibodies among the 3 orally infected groups was similar, but were higher than in hens of group 4 (P<0.01). conclusion: Thus, The method either of inoculating hens orally with 500 A. galli eggs 6 times over 2 weeks period, or with 1000 A. galli eggs 3 times over a week period was the most reliable method tested. | Publication Type: | Journal Article | Source of Publication: | Journal of Advances in Parasitology, 4(3), p. 41-46 | Publisher: | Nexus Academic Publishers | Place of Publication: | Pakistan | ISSN: | 2311-4096 | Fields of Research (FoR) 2008: | 070299 Animal Production not elsewhere classified 070203 Animal Management 070202 Animal Growth and Development |
Fields of Research (FoR) 2020: | 300302 Animal management 300301 Animal growth and development |
Socio-Economic Objective (SEO) 2008: | 970107 Expanding Knowledge in the Agricultural and Veterinary Sciences 839901 Animal Welfare 970106 Expanding Knowledge in the Biological Sciences |
Socio-Economic Objective (SEO) 2020: | 280101 Expanding knowledge in the agricultural, food and veterinary sciences 109902 Animal welfare 280102 Expanding knowledge in the biological sciences |
Peer Reviewed: | Yes | HERDC Category Description: | C1 Refereed Article in a Scholarly Journal |
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Appears in Collections: | Journal Article School of Environmental and Rural Science |
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