servative may not be realized when 

 it is fed as the sole ration. This ex- 

 periment also shows both the value 

 of grass silage in preventing the loss 

 of nutrients during harvesting and 

 its value as a part of the ration. 



H. A. Keener, K. S. Morrow, 



AND G. M. FOULKROD 



Wood Molasses as Good as Cane 

 Molasses in Dairy Cattle Feeding. A 

 process has been developed at the 

 U. S. Forest Products Laboratory, 

 Madison, Wis., for the production of 

 molasses from wood waste. Yields 

 of 130 to 200 gallons of molasses 

 are obtained from each ton of wood. 

 Briefly, the process consists of con- 

 verting wood waste to sugar by 

 pressure-cooking with dilute acid 

 and subsequently evaporating the re- 

 sulting sugar solution to molasses. 

 Because of the high yields of mo- 

 lasses obtained by this process from 

 unused wood wastes such as are 

 found at sawmills, woodworking 

 plants, and in the forests, lumbermen 

 are very much interested in this 

 product. 



Because preliminary feeding tests 

 showed that the molasses produced 

 by this process may be used as a 

 substitute for cane molasses for stock 

 feeding, and because of the large 

 amount of wood wastes available 

 throughout New Hampshire, experi- 

 ments to determine the value of this 

 product and to compare its nutritive 

 value with that of cane molasses for 

 dairy cattle feeding have been car- 

 ried out. By means of carefully 

 controlled individual protein and 

 energy balance experiments with 

 dairy heifers it was found that wood 

 molasses was equal to cane molasses 

 as a feed for dairy cattle. 



N. F. CoLovos, H. A. Keener, 

 A. E. Teeri, and J. R. Prescott 



Early-Cut Timothy Hay Is High 

 in Protein. Farmers have been ad- 

 vised for many years to harvest their 



forages early. It generally has been 

 recognized for a long time that the 

 stage of maturity and the texture of 

 the plant are indicative of its feeding 

 value. However, little conclusive ex- 

 perimental evidence appears to have 

 been obtained by nitrogen and en- 

 ergy balance experiments to deter- 

 mine accurately the effect of maturity 

 on the feeding value of various for- 

 ages. In a series of controlled indi- 

 vidual feeding experiments with 

 dairy heifers, using the facilities of 

 the metabolism stalls, the automatic 

 excreta collection devices and the 

 respiration chambers available at the 

 New Hampshire Agricultural Experi- 

 ment Station, the nutritive value of 

 timothy hay, cut at three different 

 stages of maturity, was determined 

 and compared to clover hay. The 

 early timothy surpassed all the other 

 hays in metabolizable energy but 

 furnished less than half as much 

 digestible protein as the clover hay. 

 The early-cut timothy furnished 3.2 

 times as much digestible protein and 

 1.25 times as much metabolizable 

 energy as the late-cut timothy hay. 



H. A. Keener, N. F. Colovos, 

 A. E. Teeri. and J. R. Prescott 



Aureomycin Proves Highly Effec- 

 tive for the Treatment of Mastitis. 

 A new antibiotic agent, aureomycin, 

 was tested for the treatment of 

 streptococcal and staphylococcal 

 mastitis. This material was supplied 

 for experimental use through the 

 courtesy of Lederle Laboratories, 

 Pearl River, N. Y. The aureomycin 

 was placed in an ointment base in a 

 tube, the end of which could be in- 

 serted into the teat canal and the in- 

 jection made directly from the orig- 

 inal container. The results to date 

 indicate that the aureomycin is re- 

 markably effective for the treatment 

 of mastitis and has given better re- 

 sults than any other agent so far 

 tested. One injection of 200 to 400 

 mg. of aureomycin was sufficient to 



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