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Milking Techniques and the Composition of Guinea Pig Milk1

Two Figures

Walter L. Nelson, Alvin Kaye, Marianne Moore, Harold H. Williams and B. L. Herrington

School of Nutrition, Department of Biochemistry and Nutrition, and Department of Dairy Industry, Cornell University, Ithaca, New York

A milking machine of simplified design for use with small animals is described and the techniques used to obtain quantitative yields of milk during the entire lactation period of guinea pigs are discussed. Using these techniques, guinea pigs were milked for periods as long as 19 days without having nursed their young. A composite sample of guinea pig milk was analyzed for a larger number of constituents, and daily variations in milk yield, ascorbic acid, riboflavin and niacin concentrations are presented. Lactation curves for guinea pigs are presented which indicate that this animal is suitable for quantitative studies of the factors concerned with lactation.

1 This study was supported in part by grants from the Robert Gould Foundation, Inc., Cincinnati, Ohio, and the Herman Frasch Foundation, New York City.

Manuscript received 16 February 1951.




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Copyright © 1951 by American Society for Nutrition