AGRICULTURAL RESEARCH IN NEW HAMPSHIRE 57 



a 65 per cent syrup were preferred to strawberries which were shced be- 

 fore freezing. 



The Indian Summer variety of red raspberry which ranked highest 

 in quahty for freezing in summer of 1941 again ranked highest for can- 

 ning quality in 1942. Taylor and Marcy varieties of red raspberries were 

 also desirable for canning. Color, shape and flavor were well retained in 

 canning by the Marion and Sodus varieties. 



WiLMA Brewer, Tatiana Levcowich 



NUTRITION — VITAMINS — METABOLISM 



Pelleting Horse Feeds 



In response to a request of Colonel Paul E. Howe of the Army Sani- 

 tary Corps, for cooperative assistance in determining field emergency 

 rations for army horses and mules, the time and funds alloted for experi- 

 menting with energy expenditure of horses has been applied to study this 

 nutritional problem because of its immediate urgency. The delayed study 

 as provided for by the project will be continued during the coming fiscal 

 year. 



The objective of these experimental tests is to pellet various combi- 

 nations of feeds under high pressure in order to reduce bulk, and there- 

 by facilitate problems of transportation, but at the same time to produce 

 pellets which contain a satisfactory combination of vitamins, protein, and 

 energy. 



As a result of this experiment it is found that very satisfactory pellets 

 can be made ^\'ith a combination consisting of oat groats, cornmeal, beet 

 pulp and alfalfa meal in the proportions of 1-1-1-2, respectively. The 

 l)ulk is reduced to one-half that of the same ingredients when not pelleted. 

 No binder was used. 



E. G. RiTZMAN, N. F. CoLovos, A. D. Littlehale 



Nutrition Studies with Calves 



The study of protein and energy utiHzation b\- Holstein heifer calves 

 from birth to four months of age was completed during the year. 



Three calves were liberally fed in order to produce the maximum in- 

 herent growth potential in each individual. During the first month, on 

 identical amounts of milk with a digestible protein content correspond- 

 ing to the Morrison standards, the respective daily gains in weight were 

 1.69, 1.27, and 1.37 pounds. During the second month, when, with the 

 addition of grain and hay, the digestible protein amounted to the maxi- 

 mum provision of the same standards, the daily gains in weight were 2.12, 

 1.77, and 1.12 pounds, respectively. During the third and fourth months, 

 with still more grain and hay in proportion to milk and w ith a digestible 

 protein intake in excess of the standard maximum, the respective gains 

 were 2.34, 1.95, and 1.78 pounds for the third month, and 2.25, 1.87, and 

 1.73 pounds for the fourth month. In each instance the total amount of 

 total digestible nutrients was in excess of the standard provisions. As 



