ANIMAL PRODUCTION. 481 



Studies on the nutritive value of asparagin, F. Rosenfeld (Zlf<rhr. TV)'. J>('ut. 

 Zuckerind, 1900, pp. 1055-1079; ahx. In Ztschr. Uidersuch. Nahr. n. (ienumrdl., 4 {1901), 

 No. 13, p. 602). — The npecial object of the iiiveHtigation was to determine whether 

 the inHuence of UHpara^iii on the nitrogen metabolism of flesh-eating animals was 

 elianged when a detinite quantity of crnde fi))er (hay) was added to the ration. In 

 tests with a dog the nntritive value of asparagin and of albumin was compared, 

 \\a.y being mixed with the ration in one case. The conclusion was reached that the 

 favorable effect of asparagin, and that of other amids also, was dependent upon the 

 feeding of materials containing crude fiber at the same time. 



Concerning' experiments on artificial feeding, F. Steixitz (Inwirj. Dli^fi., /.'/vx- 

 Imt, 1900, pp. 4<>). — A number of artificial food mixtures were studied with dogs. 

 In the rations the protein was furnished l)y casein, edastin, or vitellin; the carbo- 

 hydrates ])y milk sugar or rice starch, and the fats by olive oil, margarine, or ba(!on. 

 A salt mixture a])propriating the asli content of meat was added to the ration when 

 necessary. From the experiments the author believes that it is possible to nourish 

 animals satisfactorily for a long time on artificial food mixtures if properly prei)ared. 

 Among otlier points attention is drawn to the desirability of supplying a nudeo- 

 proteid containing iron. 



Feeding of farm animals, M. E. Jaffa and L. Anderson {California Sta. lluf. 

 132, pp. .5/5, //(/.s\ ,5?).— Tables are quoted showing the composition and digestibility of 

 a considerable number of feeding stuffs, especially those of local importance. The 

 analyses not previously reported include marsh (Briston) grass, peas and oats, oat 

 silage, orchard-grass silage, beet-pulp silage, olive ])omace, pie melon, liay from 

 mixed cereals, wild-oat hay, alkali weed, gourd or mock orange vines, Lima-bean 

 straw, plumj) wheat, shrunken wheat, crushed barley, blood meal, dried blood, 

 meat meal, and a commercial poultry feed. A number of the feeding stuffs are 

 discussed at length. Special attention is given to sugar-beet pulp. Silos for stor- 

 ing the pulp are described and information gathered from California feeders on 

 the value of this material for farm animals is sununarized, showing, ai-cording 

 to the authors, "that l)eet i)ulp should Jiot be depended upon as the sole diet 

 I'itiier for producing milk or meat, tlie chief reason being that it does not ade- 

 (|uately nourish the animal. When fed in connection with other and dry feed it 

 not only serves to keej) the digestion in a healthful condition, but adds materially 

 to the store of actual food substance. The amount of pulp which can be feil profit- 

 ably is rejiorted by all who feed for meat to be all the animals will readily consume 

 in addition to the portion of hay or straw and grain, as already mentioned. In the 

 case of the profitable quantity to feed for milk production there seems to be a wide 

 difference of opinion. It may be that 25 or 30 lbs. i)er day of pulp will indnce as 

 large a flow of milk as 80 lbs. per day when the rest of the feed is dry, the notion 

 i)eing that the lesser quantity gives the cow all the succulent food and change of diet 

 which i^he really recpiires for the best production. Where the i)ulp must be hauled 

 a long distance and the cost of transportation is therefore great, it would undoubt- 

 edly be unwise to feed it in larger amounts than would give the necessary succidence 

 to the ration, and 25 lbs. iH])robably sufficient for this purpose. But where the dairy 

 is situated adjacent to the sugar facrtory ... it might pay to feed the pulp in nmcli 

 larger (luantities." 



The feeding value of fruits is also discussed at some length. It frequently hai>pens 

 that fiwing to an overabundant crop, fruits (fresh or dried) have a low market 

 value. Windfalls are more or less abundant on fruit farms and of little commercial 

 importance. Regarding the feeding value of such materials the authors point out 

 that green fruits have a high water content, while dried fruits constitute a fairly con- 

 centrated feed. In general, fruits suj)])ly little nutritive material excel )t carbohy- 

 drates, and should be coiubini'<l with concentrated feed to make a well-balanced 

 ration. 



