American Society of Agricultural and Biological Engineers

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Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:   No Citation available.
Authors:   Thomas J Fangman DVM, MS, Dipl ABVP
Keywords:   Pigs, Wean to finish, ADG, Growth, Nursery, Grow-Finish

This study was conducted in a commercial pork production system located in central Missouri. The purpose of this study was to determine the performance and health effects of production system types. For this study pigs were weaned into the same facility where they stayed until they were marketed (wean-to-finish). The growth performance of these pigs was then compared to a contemporary group that was weaned into a conventional off-site nursery and then moved into a grow/finish facility located on the same site and identical to the facility utilized as the wean-to-finish facility. Comparison of ADG and FE between the two systems indicated that there was no significant difference between conventional and wean-finish groups in this study. Kill sheet data demonstrates that pigs from both groups were first marketed at 156 days of age (conventional) and 157 days of age (wean to finish) with a 260 pound average from the conventional group and a 268 pound average from the wean to finish group. When a weighted average method was utilized to determine the average age at marketing it was determined that the pigs marketed from the wean to finish group were marketed 170.7 days post weaning and the pigs marketed from the conventional group were marketed 171.0 days post weaning. Clinical signs associated with PRRS, E coli , Streptococcus and Lawsonia were observed and diagnosed at different times during the course of this study. (Download PDF)    (Export to EndNotes)