Date of Award
January 2015
Degree Type
Dissertation
Degree Name
Doctor of Philosophy (PhD)
Department
Animal Science
First Advisor
Jeremy N Marchant-Forde
Second Advisor
Brian T Richert
Committee Member 1
Jeremy N Marchant-Forde
Committee Member 2
Brian T Richert
Committee Member 3
Donald C Lay
Committee Member 4
Luiz Henrique Antunes Rodrigues
Abstract
Farrowing crates represent approximately 88 % of the pig farrowing systems in the U.S. (USDA`s NAHMS, 2006). This farrowing system is very advantageous for production efficiency and management; however, it presents several pig welfare issues that are subject to concern. Generally, alternatives to farrowing crates provide a little more flexibility to the sows to communicate better with their litters, as well as to perform more exercise, posture changes, and more natural behaviors during lactation. A major concern with the alternative farrowing systems is the higher pre-wean mortality, especially due to piglet overlay. High pre-wean mortality rates impact not only the producer`s profitability, but also the welfare of young piglets. Several studies demonstrate a high variability of crushing rate among sows submitted to the same physical environment. It is possible that factors other than the system’s physical configuration may be affecting the maternal behavior of sows and causing increased crushing. Therefore, the objective of this study was to investigate how environmental and management factors affect piglet crushing, as well as the duration and frequency of sow postures and posture changes.
Recommended Citation
Munhoz Morello, Gabriela, "INVESTIGATING PIGLET CRUSHING BY THE SOW: A DATA MINING APPROACH" (2015). Open Access Dissertations. 1133.
https://docs.lib.purdue.edu/open_access_dissertations/1133