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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)orcid ; Sharma, Nishchal (author); Ruhnke, Isabelle  (author)orcid 
Publication Date: 2017
Open Access: Yes
DOI: 10.17582/journal.jap/2017/ Access Link
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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
Appears in Collections:Journal Article
School of Environmental and Rural Science

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