Welfare

 Industry Partners


Prairie Swine Centre is an affiliate of the University of Saskatchewan


Prairie Swine Centre is grateful for the assistance of the George Morris Centre in developing the economics portion of Pork Insight.

Financial support for the Enterprise Model Project and Pork Insight has been provided by:



Author(s): Biggs PE;Persia ME;Koelkebeck KW;Parsons CM;
Publication Date: January 1, 2004
Reference: , vol. 83: pp. 745-752.

Summary:

Laying hens that have completed a 40 week laying period may be put through a molt (loss of feathers and cessation of lay) and then begin a second laying period. Many methods used to induce this temporary stoppage of lay involve dramatic if not complete feed withdrawal. This raises serious welfare concerns. Alternative methods of inducing a molt have been developed. In this study several nonfeed withdrawal methods were compared with conventional programs (10 day withdrawal). The nonfeed withdrawal methods involved changing the diets to 94% corn, 94% wheat midlings, 71% wheat midlings:23% corn, 47% wheat midlings:47% corn, 95% corn gluten, and 94% distillers dried grains. The feed withdrawal programs achieved complete cessation of lay within a few days. With the exception of the distillers dried grains, all of the nonfeed withdrawal treatments reduced egg production to less than 6% during the program. Once laying was re-induced by the provision of a high quality laying diet there were no differences among treatments on egg production or quality. The results indicate that several nonfeed withdrawal programs are effective in inducing a molt and that subsequent production is unaffected.

You must be logged in to post a comment.

 
 
Slots Master There is no definite strategy or technique that you can use as you play slots