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Formaldehyde as a Bacterial Growth Retardant in Reconstituted Artificial Ewe Milk¹

U.S. Department of Agriculture, Beltsville, Maryland 20705

Abstract

Addition of 1 ml 37% formaldehyde (HCHO) to 4 kg of reconstituted ewe milk replacer retarded bacterial growth and prevented souring of the milk for 24 hr. at 25C, for 48 hr. at 17 to 18C and 72 hr. at 7C. Average daily gain of 14 Finnsheep lambs receiving the treated milk replacer at 13 to 19C ad libitum for 50 days was 0.22 ± 0.02 kg/day vs. 0.17 ± 0.04 kg/day for 14 sibs nursing their dams (P< .01). The lambs readily consumed the HCHO treated milk replacer with no scouring or digestive disturbances.

¹ Bacteriological examinations were conducted by England Laboratories, Inc., 5011 Herzel Place, Beltsville, Maryland 20705.

Mention of products or companies in this report does not constitute endorsement by the U.S. Department of Agriculture to the exclusion of others not mentioned.

² Agricultural Research Service, Nutrition Institute, Ruminant Laboratory, Beltsville, Maryland 20705.