Effects of Neonatal Nutritional Experiences on Growth and Development of the Pig

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Abstract
The influence of early nutritional experiences on growth and development of young pigs was investigated. Neonatal nutrition was altered by removing pigs from the sow at 3 days of age and feeding either a control, low energy or low protein milk diet for 4 weeks. A second approach was; adjust litter size to small, four pigs per litter, or large, 12 pigs per litter. Both neonatal nutritional manipulations resulted in a marked influence of growth during the experimental period. However, when pigs were allowed to feed ad libitum after the experimental period most of the differences in body weight and carcass characteristics were reversed. However, adipose cell numbers in the perirenal fat pad were increased in pigs in small litters (high energy intake). Mobilization of lipid by activation of intracellular lipase was increased in pigs receiving the low energy diets. Changes in muscle cellularity induced by neonatal nutrition were completely reversed after real-imentation. Copyright © 1974. American Society of Animal Science . Copyright 1974 by American Society of Animal Science.

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