title: [Effect of vitamin A and protein levels in the diet of chickens infected with Ascaridia galli on activity of digestive enzymes in pancreas and small intestine].
abstract: Hybrid chickens Astra S fed vitamin A deficiency diet containing 11 or 19% protein were infected with 500 invasive eggs of Ascaridia galli. One part of them received vitamin A in a dose corresponding to daily requirement, other part in double dose. After 7 weeks the extensity and intensity of ascaridiosis were determined. In pancreas and intestinal contents the activities of alpha-amylase, lipase and trypsin were measured. The invasion index was the highest in the group of chickens fed the protein and vitamin A deficiency diet. Vitamin A in a requirement dose lowered the parasite index. The results with double dose of vitamin A were worse in comparison with single dose. The activities of digestive enzymes were lower in infected animals than in the control groups. Vitamin A acted as moderator of the enzymatic changes during ascaridiosis.
authors.affiliation: Katedra Biologii Ogólnej WSP Olsztyn, Zołnierska.
authors.forename: K
authors.initials: K
authors.lastname: Zółtowska
authors.forename: J
authors.initials: J
authors.lastname: Dziekońska-Rynko
authors.forename: H
authors.initials: H
authors.lastname: Olender
authors.forename: Z
authors.initials: Z
authors.lastname: Jabłonowski
mesh_terms: D000818:Animals; D001197:Ascaridia / Q000472:pathogenicity; D001198:Ascaridiasis / Q000662:veterinary*; D002645:Chickens; D004044:Dietary Proteins / Q000627:therapeutic use*; D007421:Intestine, Small / Q000201:enzymology*; D010179:Pancreas / Q000201:enzymology*; D011201:Poultry Diseases / Q000178:diet therapy*; D014801:Vitamin A / Q000627:therapeutic use*
chemical_list: D004044:Dietary Proteins; D014801:Vitamin A