66 



EXPERIMENT STATION RECORD. 



[Vol 37 



to be proportionate to the extent or completeness of maceration or physical 

 disintegration. The feeding of silage and cottonseed meal in combination ap- 

 parently increased the digestibility of total ash in the cottonseed meal. 



It is stated that " heavy cottonseed meal feeding tends to lower the nutritive 

 value of the silage fed along with it and the most economically used rations are 

 those containing a maximum amount of silage with a minimum amount of 

 cottonseed meal. The nutrients of cottonseed meal and silase are not digested 

 in the same proportions when fed alone and in combination.*." 



Animal husbandry experiments {Iowa Sta. Rpt. 1916, pp. 25, 26). — In fat- 

 tening experiments with 2-year-old steers, rations of silage with about one- 

 fourth to one-half of a full ration of corn returned from $2 to $6 more profit 

 per head than when the steers were hand-fed or self-fed. The results of four 

 years' cooperative beef cattle experiments in Monona County indicate that 

 baby beef can be profitably raised and fed out on the average Iowa farm under 

 present conditions. 



The results of an experiment in which a Shorthorn bull and Galloway cows 

 were originally crossed and their offspring intercrossed indicate that " the white 

 color of the Shorthorn type is due to the lack of a factor E for extension, which 

 is present in colored cattle. The extension factor 6perates on both black and 

 red pigment. There is another type of white in cattle which does not Involve 

 the loss of the extension factor. The previously a.ssumed allelomorphic nature 

 of red and black, and al.so of horned and polled, is demonstratetl. In regard 

 to its bearing on farm practice, the experiment shows that breeders of polleil 

 cattle may introduce superior horned animals into their breeding herds without 

 danger of seriou.sly lo.sing ground." 



[Animal husbandry studies], E. J. Iddings and C. W. Hickman {Idaho Sta. 

 Bui. 92 (1916), pp. -}-7). — Continuing the work in sheep breeding and manage- 

 ment (E. S. R.. 34, p. 767), information was obtained on the yield and compo- 

 sition of milk of the different breeds in the test. The following table gives a 

 summary of the.<«e data together with five years' weights of fleece and three 

 years' birth weight.s of lambs, lambing percentages, and average daily gains of 

 lambs to three months of age. 



Results of tests in sheep hrtrilitirj and mannriement. 



No adequate explanation has thus far been found for differences noted in the 

 growth of lambs. 



Silage from peas and oats and from wheat and vetch was used with satis- 

 factory results in maintaining beef cattle during the winter. It was found 

 that silage from either of these mixtures readily replaced corn silage for milk 

 production. 



The results of hogging off 3.S8 acres of Canada field peas are summarized in 

 the following table; 



