286 ILLINOIS STATE DAIRYMEN'S ASSOCIATION 



in the same lot. In Lot i the variation in protein was from 



5.76 to 10.37 pounds, in carbohydrates from 33.52 to 59.74 

 pounds, in fat from 2.39 to 4.38 pounds, and in total nutrients 

 from 44.66 to 79.97 pounds; in Lot 2 the protein varied from 



4.77 to 7.36 pounds, the carbohydrates from 46.99 to 72.85 

 pounds, the fat from 2.43 to 3.73 pounds, and the total nutrients 

 from 57.23 to 88.60 pounds. 



The average amounts of nutrients consumed per 100 pounds 

 milk produced were as follows: Lot 1, protein 7.12 pounds, 

 carbohydrates 40.71 pounds, fat 3.00 pounds, and total nutrients 

 54.59 pounds; Lot 2, protein 5.99 pounds, carbohydrates 59.12 

 pounds, fat 3.03 pounds, and total nutrients 71.91 pounds. Lot 

 2 consumed 15.9 per cent less protein, and 45.2 per cent more 

 carbohydrates, or 33.7 per cent more total nutrients per 100 

 pounds of milk produced. While the cows in Lot 2 consumed 

 less protein per 100 pounds milk produced, they lost greatly in 

 weight, and undoubtedly a portion of this protein was used at 

 the expense of their bodies. 



The above discussion shows that the lot getting the bal- 

 anced ration was able to consume 12.5 per cent more nutrients 

 and to make 33.7 per cent better use of the nutrients consumed. 



Tables 5 and 6 show that the nutrients consumed per pound 

 of fat produced were as follows : In Lot 1 the protein varied 

 from 1.78 to 2.78 pounds, with an average of 2.21 pounds; the 

 carbohydrates varied from 10.45 to 16.01 pounds, wjith an 



Table 3. — Amount of Milk Produced by Each Cow in Lot 1, and Amount 

 Of Nutrients Consumed Per 100 Pounds of Milk Produced. 



Cow 



Milk 



Digestible nutrients consumed per 



100 



pounds milk 



No. 



produced 



Protein 



Carbohydrates 



Fat 



Total nutrients* 



1 



4083.1 



5.76 



33.52 



2.39 





44.66 



2 



4317.2 



7.03 



40.24 



2.99 





54.00 



3 



3242.6 



10.37 



59.74 



4.38 





79.97 



4 



4552.6 



6.64 



37.57 



2.80 





50.51 



5 



5140.2 



6.28 



35.86 



2.66 





48.13 



6 



4373.0 



6.85 



39.04 



2.89 





52.39 



7 



4404.9 



7.85 



44.58 



3.31 





59.88 



8 



5473.1 



6.30 



35.85 



2.66 





48.14 



9 



3806.3 



7.01 



39.96 



2.96 





53.63 



Average 



4377.0 



7.12 



40.71 



3.00 





54.59 



