Effet de la hiérarchie sociale sur le comportement alimentaire du porc dans un contexte d'antibiothérapie administrée par l'aliment
|Abstract:||In the pig industry, bacterial diseases are usually treated with in-feed antibiotics. Irregular ingestion can decrease treatment efficiency and promote the selection of antibiotic-resistant bacteria. The aim of this study was to determine the effect of social rank on individual feeding patterns in pigs. A total of 108 barrows of 49.5 ± 4.71 kg were housed in groups of 12 pigs distributed into 3 replicates of 3 pens each. The IVOGÒ feeding-stations registered individual feeding data during a 10-day period of medicated feed (chlortetracycline). Two social rank tests were done to determine social ranks in each group. Spearman’s rank correlation tests confirmed inconsistency in social rank determination from one test to the other. Three clusters were established based on feeding data. The number of dominant and subordinate pigs was not significantly different from one cluster to the other. Therefore, no clear relationship could be demonstrated between social ranks and individual feeding patterns.|
|Document Type:||Mémoire de maîtrise|
|Open Access Date:||16 April 2018|
|Collection:||Thèses et mémoires|
All documents in CorpusUL are protected by Copyright Act of Canada.