Lactating submissive dating

03-Nov-2016 04:34

Sows (n = 64) used in this study were from a larger scale study of 180 gestating sows.

Immediately following the feed competition test, sows were moved as a group to their assigned group pen.

Submissive sows receive more aggression and are displaced more often from the feeder and other resources (e.g., enrichment material), which results in lower feed intake among lower ranked sows [7-9].

Social status is an important animal factor that can affect the biological response and consequence of stress.Based on all aggressive interactions, dominance values (DV) were calculated for each sow within the group.The equation used: DV = aggressive encounters initiated/ (aggressive encounters initiated encounters received).Feed competition test and sow behavior At gestational d 37, groups of nine pregnant sows were subjected to a feed competition test as previously described to determine social status [16].Nine sows were placed in a non-experimental pen (4.10 m × 4.10 m) with one feeder and no water.

Social status is an important animal factor that can affect the biological response and consequence of stress.

Based on all aggressive interactions, dominance values (DV) were calculated for each sow within the group.

The equation used: DV = aggressive encounters initiated/ (aggressive encounters initiated encounters received).

Feed competition test and sow behavior At gestational d 37, groups of nine pregnant sows were subjected to a feed competition test as previously described to determine social status [16].

Nine sows were placed in a non-experimental pen (4.10 m × 4.10 m) with one feeder and no water.

Data were acquired using Geovision GVd1240 video capture card (Geovision, Inc., Irvine, CA).