Diets and amount of pigs used in each experiment varied. However, they all used two different types of pigs: Cassie line Yorkshire transgenic pigs and normal Yorkshire pigs. In these experiments, boars, gilts, and barrows were used, combinations of which also depended on the experiment being conducted (Meidinger et al., 2013). Boars are intact males, gilts are young females, and barrows are mature female pigs. The normal Yorkshire pigs in each experiment served as positive controls for their respective experiments. Positive controls serve to highlight the impact of what is being investigated by serving as a neutral baseline. Without a positive control, experimenters would have no indication of how effective or detrimental their changes were on their
Diets and amount of pigs used in each experiment varied. However, they all used two different types of pigs: Cassie line Yorkshire transgenic pigs and normal Yorkshire pigs. In these experiments, boars, gilts, and barrows were used, combinations of which also depended on the experiment being conducted (Meidinger et al., 2013). Boars are intact males, gilts are young females, and barrows are mature female pigs. The normal Yorkshire pigs in each experiment served as positive controls for their respective experiments. Positive controls serve to highlight the impact of what is being investigated by serving as a neutral baseline. Without a positive control, experimenters would have no indication of how effective or detrimental their changes were on their