Changes in Milk Products “Sham Fed” to Calves. I. Effects of Volume of Milk Fed

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Abstract
A series of sham feeding trials with 4 calves was conducted to ascertain the effects of vol. of whole milk fed from a nipple feeder and an open pail, respectively, on the degree of modification of milk in its passage through the oral and esophageal cavities. The milk was fed in 5 successive 5-lb. units. In accord with previous observations (Jour. Dairy Sci. 23: 997) marked lipoly-sis accompanied by accelerated rennet coagulation was noted in all the sham-fed milk. Alterations of the milk fed from a nipple feeder were greatest in the 1st portions and least in the last, but the differences in the magnitude of changes in various units fed from the open pail were not so marked. Though the degree of modification in the first increments were more marked when consumed by sucking than by drinking, the changes for both systems of feeding were similar after the 3d increment. Lipolysis in the successive 5-lb. units closely paralleled the changes in degree of dilution, indicating that lipolytic agents were closely associated with the diluting medium. The differences in the degree of dilution of milk with increasing intake indicated that the system of feeding and /or time were factors involved.

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