178 ELEMENTARY TREATISE ON STOCK FEEDS AND FEEDING 



dan of the Louisiana State University and the writer adapted the 

 following table from Haecker's work to meet the demands of 

 feeders who wish to employ narrow rations for milch cows. 



Woll of the Wisconsin Experiment Station says : "At the 

 prices of feeding stuffs in the North Central States it will not, as 

 a general rule, pay to feed a narrower ratio to dairy cows than 

 i : 6.0 and we find that the cows in our University herd fed 

 according to our best judgment receive on the average rations 

 with a nutritive ratio of about i : 6.5 to 7.0. The heavier pro- 

 ducers in the herd naturally receive more grain feed than the low 

 producers and their rations, therefore, have a narrower nutritive 

 ratio, but it is very rarely that we find it necessary to go below 

 i : 6.0. The starchy feeds are cheaper than the protein feeds 

 with us and unless the cow has an exceptional productive capaci- 

 ty a medium or somewhat wide nutritive ratio is more economical 

 than a narrow one." 



Suggestion : A gallon of milk weighs 8.6 Ibs. Compute 

 two rations for a cow weighing 825 Ibs. producing 2^2 gallons 

 of milk a day, testing 4 per cent, butter fat, according to the 

 standards in the two tables in this section, from mixed hay, 

 corn meal, linseed meal and wheat bran. 



