FOODS ANDrAL PKODUCTION. 657 



" The auiinals having the narrower rations produced, on the average one tenth of a 

 pound more of butter per day than those having the wider, and those having the 

 larger amounts of protein gave, on tlie avorjige, two tenths of a pound more of 

 huttei per day than tliose having the smaller (juantities of protein. Too much 

 importance should not be attached to these results, as they maj- have been partly 

 accidental, and due to causes otiicr than feed. It is, ucvoriheless, a noteworlhy 

 fact that in the cases in which the cows were in about the same period of lactatitMi, 

 the yields of butter decreased as the protein decreased, and as the nntritive ratio 

 increased. This would seem to indicate, that it woiild be safe in general to feed as 

 much or even more protein than- called for by Wolff's standard ration if we would 

 obtain the largest yields of butter from onrmilch cows." 



Feeding experiments with fat-extracted fish meal for cows, 



KuHN-CoKNiETEN [MoUc. Ztg., 81 [1894), ¥o. 44, p. 075). — A practical 

 trial with G cows, (jrrouud fish, freed from fat, was gradually intro- 

 duced into the ration as a substitute for brewers' grains and sunflower- 

 seed cake. From 1^ to 2.}^ lbs. (German) per head was fed, and several 

 analyses of the milk were made at the Konigsberg station. The yield 

 and composition were fairly well maintained on the fish meal. In 

 regard to the quality of the milk and butter, Professor Klein, of the 

 Konigsberg station, reported that they did not difier espe -ially from 

 that produced on oil cakes. After keeping for a half year the butter, 

 although it was somewhat rancid and tasted old, had no fishy or 

 unusual taste. The fish meal had no ill eft'ects upon the cows. 



Comparative value of mixed grain and -wheat bran or shorts 

 for milch cows, F. Friis {Kgl. Vet. Landt. Lab. LandUlion. Forso(j., 

 Copenliagcn., Bid. 29, 1894, pp. 76). 



Stjnopsis. — Feeding expcrimet'ts condncted during 1893 and 1894 by the State experi- 

 ment station at Copenhngen, Denmark, at 7 different estates with 447 cows in 

 all. Mixed oats and barley were compared with wheat bran and with wheat 

 shorts. No appreciable dititeronce was found as to the effect of the feeds given 

 on either yield or composition of the milk produced. The tendency was toAvard 

 a slight superiority of the bran over the grain, and of shorts over the bran. 



The report describes the sixth and seventh series of feeding experi- 

 ments with milch cows conducted by the Danish State agricultural 

 experiment station. The plan of the experiment was similar to that of 

 the preceding series (E. S. E., 4, p. GOl). The experiments were con- 

 ducted during 1893 and 1894 at 7 different estates with 247 and 240 

 cows, respectively. All the cows received the same feed during the 

 prelimiuary period and the after feeding (the post-experimental period). 

 During the experiment proi)er the feed of one lot of cows remained as 

 in the preliminary period, while that of the other two lots was changed 

 in the manner indicated by the following example : At one of the estates 

 (Bregeiitoed) all cows received during the preliminary feeding and 

 daring period 2 3 lbs.' of mixed grain (one third barley, two thirds 

 oats), 3 lbs. of wheat bran, 2 lbs. of oil cakes (equal parts of rape, palm 



'Danish pounds; 1 lb. Danish = 1.1 lb. avoirdupois. 



