FOOD" 



-ANIMAL PRODUCTION. 



73 



Tlie storage of albuminoids depended more on the amount of nitrogen- 

 free extract in tlie food tlian on the amount of albuminoids, and owing 

 to the albuminoid-conserving power of the carbohydrates could be con- 

 tinued for a long time. It follows from this that in slow fattening with 

 a low i)roductive ration a ratio narrower than 1:6-1:7 by no means 

 iavors the formation of flesh. 



It was further found that every increase of the nutrients above 

 the lowest amount required for riaintenance was followed by a pro- 

 duction of fat in the body, and that for this production it made no 

 difference whether the excess of nutrients over the maintenance 

 ration consisted of nitrogenous or nonnitrogenous materials. Lay- 

 ing on of fat could continue for a long time without change, and 

 nitrogenous and nonnitrogenous materials appeared to be of like 

 value for this purpose. Even with rations much wider than those gen- 

 erally considered favorable, the'laying on of fat was not at all changed. 

 Eations with a narrow ratio were less favorable to the production of 

 fat than those with a wider ratio, although the results with the narrow 

 ratio differed quite widely according to the kind of protein material 

 added (wheat gluten or ground meat). Summarizing the results of 3 

 series of experiments, it is found that 2 oxen on a ration of 31.4 kg. of 

 digestible organic mateiial with a nutritive ratio of 1: 4.5-1: 7.2 laid on 

 2.041) kg. of fat; and 3 oxen on a ration of 30.52 kg. of digestible organic 

 matter with a nutritive ratio of 1 : 14-1 : 17.4 laid ou 2.138 kg. of fat. 

 The indications from this are that under the food conditions per day 

 and per 1,000 kg. live weight mentioned above, 0.5 or 1 kg. of digest- 

 ible protein in the form of gluten could be replaced by a like amount of 

 starch meal without any apparent change in the amount of fat pro- 

 duced. 



The following table shows the amount of fat stored up when different 

 amounts of digestible organic matter with different nutritive ratios were 

 fed, the results being stated in terms of 1 day and 1,000 kg. of live weight: 



Food eaten and fat stored in the body by oxen per day and per 1,000 leg. live weiglit. 



