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The Utilization of Ammoniated Industrial By-Products and Urea by Sheep¹

The Pennsylvania State College

Abstract

When ammoniated condensed distillers molasses solubles, ammoniated cane molasses and urea (262) were mixed with cerelose and a basal mixture composed of natural feedstuffs in such a way that the total rations were iso-caloric and iso-nitrogenous and compared to soybean oil meal fed the same way to growing sheep, the following results were obtained:

1. The ration constituents of the urea-containing ration were digested as well as those of the soybean oil meal-containing ration.
   
2. The addition of the ammoniated products decreased the digestibility of all ration constituents except ether extract. The differences in all constituents except crude fiber and NFE were statistically significant, but were small except in the case of crude protein.
   
3. The sheep receiving the urea ration stored slightly more nitrogen than the sheep receiving the soybean oil meal ration. Both of these rations were superior in this respect to both of the rations containing the ammoniated products.
   
4. The soybean oil meal ration contained the highest level of metabolizable energy and was followed in order by the urea, ammoniated CDMS and ammoniated cane molasses rations. There was a spread of only 6.2 percent between the highest and lowest values.
   
5. In the storage of total carbon and body fat, the urea ration was definitely inferior to all the rations used in this study.
   
6. There was no loss of nitrogen from the rations containing urea or either of the ammoniated products when they were stored in open containers at room temperature for a period of 120 days.
   
7. The results of the palatability trial indicate that both ammoniated products are palatable to sheep when fed at the level of ten percent by weight of the total ration.
   
8. There was good agreement between the directly determined and calculated heat production values.
   

¹ Authorized for publication on August 14, 1952 as paper No. 1751 in the Journal Series of the Pennsylvania Agricultural Experiment Station.

² This study was conducted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Animal Nutrition. Present address, Oklahoma A & M College, Stillwater, Oklahoma.

³ The authors wish to acknowledge the technical assistance of G. P. Barron, R. L. Cowan, R. H. Ingram, K. H. Maddy, J. J. Rovics, and J. A. Uram.