FEEDS FOR THE DAIRY COW 367 



Dried molasses-beet pulp was found about equal in feeding value to 

 dried beet pulp for dairy cows in trials by Billings at the New Jersey 15 

 and Lindsey at the Massachusetts Station. 16 In a trial by Billings dried 

 molasses-beet pulp proved almost as valuable as an equal weight of 

 hominy meal, and even more palatable. Since both dried beet pulp and 

 molasses-beet pulp are low in protein, they should not be fed as sub- 

 stitutes for protein-rich feeds, as has often been done. (278) 



587. Whey. "When there is more whey available than can be utilized 

 by the swine or the calves, it may be fed to dairy cows. According to 

 the feed-unit system 12 Ibs. of whey is equal to 1 Ib. of corn or barley. 

 At the Kiel Dairy Station 17 cows were fed 11 to 22 Ibs. per head daily 

 of sweet whey with good results. Cattle will not usually drink much 

 sour whey. (268) 



II. PROTEIN-RICH CONCENTRATES 



588. Wheat bran. This palatable, bulky concentrate is one of the 

 most popular feeds for the dairy cow, for it is quite high in crude 

 protein, is rich in phosphorus, and has a beneficial laxative effect on 

 the digestive tract. (218) Owing to its popularity, bran is often high 

 in price, considering the amount of crude protein it furnishes. Other 

 by-products, such as cottonseed meal, linseed meal, or gluten feed, which 

 are richer in digestible crude protein, are then more economical sources 

 of protein for balancing the ration. Under such conditions it is accord- 

 ingly best to feed bran only in limited amount for its beneficial effect 

 on the health of the animals and its bulk, rather than as the chief 

 source of crude protein in the ration. This concentrate is especially 

 valuable for cows just before and after calving, for those on official test, 

 and for young, growing animals. 



In feeding trials with 447 cows on several Danish farms the Copen- 

 hagen Station 18 found wheat bran fed as the sole concentrate fully equal 

 to a mixture of equal parts of ground barley and oats. Bran, however, 

 should rarely be so fed, but instead in combination with some feed rich 

 in carbohydrates, such as corn, rye, barley, etc., and with some legume 

 roughage to furnish lime, which it lacks. (98) 



589. Wheat shorts; wheat middlings; wheat mixed feed. Tho wheat 

 shorts or middlings are higher in digestible crude protein than wheat 

 bran, they are less palatable and are heavy, rather than bulky feeds. 

 They should hence be mixed with other feeds and should not form over 

 one-third of the concentrate mixture. The Copenhagen Station 19 secured 

 slightly larger returns from wheat shorts than from wheat bran in trials 

 with 240 cows. (220) 



Because wheat mixed feed is higher in digestible protein and carbo- 

 hydrates than bran, Smith and Beals of the Massachusetts Station 20 

 18 N. J. Rpt. 1904. "Copenhagen Sta. Rpt. 1894. 



"Mass. Rpt. 1913. "Copenhagen Sta. Rpt. 1894. 



"Jahresber. Agr. Chemie, 1882, p. 441. ""Mass. Bui. 146. 



