Information
Iowa State University
Dr. Johnson’s appointment consists of 50% research, 25% teaching and 25% extension. Johnson earned her doctorate degree in animal welfare from Texas Tech University in Lubbock, Texas, her bachelor’s degree in animal science from Reading University and a master’s degree in applied animal behavior and animal welfare from University of Edinburgh. Johnson’s research interests include handling and system designs impacts on transport losses in pigs’ sow productive lifetime and pain management.
Location: United States
This member gave a presentation on June 27, 2013
At the following event:
Article published the June 7, 2013
IntroductionTransportation is a necessary part of modern U.S.A. pig production. Over 100 million U.S.A. pigs are transported 2 or 3 times from birth to market (USDA, 2005). Pigs are most often transported at weaning from a farrowing barn to a nursery or wean to finish barn. Those taken to a nursery are transported to a finishing site (5 to 9 weeks later). Finally pigs are transported from the fini ...
Article published the July 30, 2012
Introduction It has been reported that during routine vaccinations, h pigs can display a "buzz" response. A buzz response can be defined as the 6-h period immediately following vaccination, where pigs display marked lethargy. To report this alteration in a pigs' behavior, the authors used a "willingness to approach" (WTA) methodology. The paper reported statistical differences between pre- and pos ...
Article published the July 17, 2012
Introduction In recent years, several production systems in the United States have gone from housing grow-finish pigs in small pens of <30 pigs to much large pens of >100 pigs per pen. Recent industry accounts, however, suggest that these large pen configurations may have negative aspects on growth performance of the pigs and morbidity / mortality. In addition, little is known about how thes ...
Article published the July 17, 2012
Summary and ImplicationsThe objective of this experiment was to determine the behaviors and postures of nursery aged pigs when classified as "not approaching" a human observer when using a digital image. A total of 1,817, ~6 wk old mixed sexed nursery pigs were used. Pigs were housed in commercial nursery pens. The approachability of pigs followed procedures used by Fangman et al., (2010). Pigs we ...
Article published the July 9, 2012
Summary and Implications The objective of this experiment was to compare two approachability definitions of nursery pigs to a human observer in their home pen using a digital image. A total of 79 pens in two rooms (40 in room 1 and 39 in room 2) were used. A total of 1,817, ~6 wk old mixed sexed nursery pigs, weighing ~25.4 kg were used. Two definitions for pigs reacting to a human in their home p ...
This member had joined Engormix
April 1, 2011