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http://dx.doi.org/10.5352/JLS.2006.16.6.942

Effect of Length of Maternal Diet Intake on Production of Newborn Rats with Brain n-3 Fatty Acid Deficiency: Pre-pregnancy Method vs. Use of Time-pregnant Animals  

Lim, Sun-Young (Division of Marine Environment & Bioscience, Korea Maritime University)
Publication Information
Journal of Life Science / v.16, no.6, 2006 , pp. 942-948 More about this Journal
Abstract
This study was performed to determine whether the length of the feeding of the controlled experimental diet to the dam resulted in changes to the dam milk or pup brain fatty acid composition. As a first method, females have been obtained at 3 weeks of age and fed the experimental diet throughout their growth to adulthood including mating, pregnancy, and lactational periods. As a second method, in order to shorten this long and expensive process, time-pregnant dams were obtained as early as possible from a commercial supplier, on day 3 of gestation, and immediately switched to the experimental diet. At birth, the milk of dams prepared by these two different methods was compared by collecting the stomach contents of the pups. This showed a slight increase in docosahexaenoic acid (DHA) and arachidonic acid (AA) in the pup stomach contents from the time-pregnant dams. There were no significant changes in the brain fatty acid composition of pups between the two different lengths of the experimental diet intake. By the 10 days of age, there were only minor differences in the milk fatty acid composition of pup stomach contents from the two sets of dams. However, the pup brains of the time-pregnant groups at 10 days showed increased AA and DHA due to intake of the chow diet including AA, DHA and eicosapentaenoic acid (EPA). Thus, the history of the maternal feeding could affect the results under these particular circumstances, but the differences were minimal.
Keywords
Docosahexaenoic acid; brain function; n-3 fatty acid deficiency; fatty acid composition;
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