470 EXPEEIMENT STATION RECORD. [Vol. 36 



persistent effort the characteristic shyness and nervousness of the Galloway 

 calves and heifers are being overcome. 



The station flock of 14 ewes, 4 wethers, and 1 ram was wintered at Kalsin 

 Bay. They were kept in corral and open shed after December 2. Fourteen 

 lambs were dropped during the latter part of April and May, of which 

 7 ewe lambs and 4 ram lambs were saved. In order to prevent further depre- 

 dations by the brown bear the flock was placed on an island near Kodiak for 

 summer pasture. The lambs grew rapidly during the summer months and the 

 ewes kept in prime condition. The clip was of good staple and fairly clean, 

 averaging 7 lbs. per head. 



Suggestions are given for future work in the breeding of cattle and horses 

 for the needs of Alaska. 



A list of breeders of pure-bred live stock in Montana (Montana Sta. Spec. 

 Circ. S {1916), pp. 23). — This gives a list of breeders of pure-bred horses and 

 jacks, cattle, swine, sheep, and goats in the State. 



The utilization of feed by range steers of different ages. — II, Alfalfa hay 

 and milo maize meal, F. AV. Christensen, H. H. Simpson, and L. Foster 

 {New Mexico Sta. Bui. 103 {1916), pp. Ill, figs. 11). — In the experiment here 

 reported, the plan and details jof which were the same as those previously noted 

 (E. S. R., 32, p. 467) , five steers each of calves, yearlings, 2-year-olds, and 3-year- 

 olds were fed like rations under similar conditions for 120-day periods. The 

 calves and yearlings were used in the 1913 test and the others in the 1915 test 

 The animals used in 1913 were mostly high-grade Hereford range steers and 

 those in 1915 were largely grade Shorthorns, the 3-year-olds lacking consid- 

 erably in uniformity of type and condition. The feeds used were first-cutting 

 alfalfa hay and milo maize meal of good quality. Analyses are given of the 

 feeds used each year, and from the proportions of the feed constituents in the 

 residues the amounts of hay and grain consumed were calculated on the basis 

 of crude fiber content. 



The average daily gains per head made by the calves, yearlings, 2-year-olds, 

 and 3-year-olds, omitting abnormal and doubtful results, Avere 1.55, 1.89. 2.12, 

 and 1.57 lbs., respectively, and per 1,000 lbs. of live weight 2.7, 2.21, 2.25, and 

 1..52 lbs., respectively. The amounts of feed consumed per steer daily were 

 10.74, 17.77, 19.95, and 19.49 lbs., respectively, and per pound of gain 6.96, 9.57, 

 9.63, and 12.6 lbs., respectively. Diagrams showing by curves the gains made 

 by each steer are given. 



Three sets of digestion trials were also made with the calves and yearlings 

 and two sets with the 2-year-olds and 3-year-olds. In these experiments, which 

 lasted 10 days each, two steers were used from each group. The results, which 

 are tabulated in detail, do not show any appreciable or certain superiority of 

 one age of animals over another as regards digestive powers, nor do they show 

 that any particular animal digested his ration better than others. No direct 

 relation was found between the amounts of feed consumed and the digestive co- 

 eSicients. However, the rations fed were not heavy. The average percentages 

 of digestibility of the alfalfa hay and milo maize meal ration are given, and 

 the composition of each feed and other data in connection with these digestion 

 trials are tabulated. 



A method is given for calculating the digestibility of the components of a 

 ration composed of two or more feeds from the coeflicients of digestibility ©f the 

 feeds when fed in combination, but in different proportions, in two or more 

 trials and when no separate determinations of digestibility of any of the com- 

 ponents of the ration have been made. The calculated percentages of digesti- 

 bility of the alfalfa hay in the 1913 experiment were as follows: Dry matter, 

 63.71 ; organic matter, 64.16 ; protein, 61.28 ; nonprotein, 100 ; crude fiber, 41.28 ; 



