ANIMAL PRODUCTION. 



601 



enoiis conipoiK^nts wlion tlit> nonnitrngenons snl)stances, according to average prices 

 of different feeding stuffs in common use in Denmark, are assumed to be equal to 1. 

 Protein is taken as equivalent to nitrogen multiplied by 6.25. — f. w. woll. 



The nutritive value of feeding- stuffs, G. Faye ( Ugesh: Lanchn., 4S {ifiOS), No. 

 28, pp. 303, 303). — In continuation of the above, the author advocates the use of 

 isodynamic units for the comparison of the value of feetKng stuffs, as follows: Protein 

 plus 2.4 times the fat, plus nitrogen-free extract, plus 0.5 times the crude fiber. — f. 

 w. vroLL. 



Concerning- the nutritive value of cellulose, B. TJstyantsev {Zap. Novo-Alcx- 

 andri Iti.^f. SrM. Klioz. i X?/t'.sor, L5 [1002), No. 2, pp. 101-191). — In view of the 

 great differences of opinion regarding the nutritive value of cellulose, the author 

 undertook a series of investigations on the subject, using 2 sheep and 3 rabbits, 

 studying with the sheep the effect of the influence of crude fiber on the metabolism 

 of nitrogen and with the rabbits taking into account the metabolism of carbon as 

 well. The resjnratory products were studied hy the method elaborated by Pashutine 

 and his associates. The principal conclusions follow: 



In the case of sheei> the digestible crude cellulose exercised little influence on the 

 cleavage of protein. Wh«n pentosaHS and pure cellulose were considered, the effect 

 of the cellulose was more marked. Digestible crude cellulose, as well as pure cellu- 

 lose and pentosans had a much smaller protein-protecting power than starch and 

 sugar with both sheep and rabbits. In the case of rabbits, the experiments showed 

 that the addition of cellulose to a ration practically free from it decreased the outgo 

 of nitrogen in the urine. However, this was largely compensated for by the larger 

 ])roportion of nitrogen excreted in the feces. Cellulose was found to protect fat from 

 cleavage to a c-ertain extent and, therefore, the author believes, may justly be called 

 a nutrient. — p. fireman. 



The feeding value of whale-flesh meal, S. Hals and A. Kavli {Norsk Land- 

 mamJiiJihul, 22 {1903), No. 30, ;);>. .m5-^S»7) . —Analyses of 27 samples of whale-flesh 

 meals of different origin are given, together with figures for the digestibility of pro- 

 tein as determined by the Stutzer method, and for the ammonia content. The 

 following table shows average results, the material designated No. 1 being a pure 

 product, and No. 2 a product containing considerable quantities of bone, which it is 

 stated might be properly considered as a whale guano: ^ 



Composition of whale JiesJi and ivhale-flesh meal. 



Whale-flesh meal, No. 1 (pure product)... 

 Whale-flesh meal, No. 2 (meal with bone) 

 Fresh whale flesh 



Water. 



Per cent. 

 7.28 

 .5.60 



81.58 



Protein. 



Per cent. 

 62. 27 

 51. 11 

 10.37 



Per cent. 



25. 07 



21.87 



.86 



Ash. 



Per cent. 



4.78 



19.18 



.39 



Coefficient 

 of digesti- 

 bility of 

 protein. 



Per cent. 

 71.4 

 72.8 

 98.3 



The relatively low figures for the digestibility of the protein of whale-flesh meal 

 was attributed to the high temperatures employed in drying it. A low water content 

 was ac-companied by low digestibility and a small percentage of ammonia. In the 

 case of 7 samples, containing on an average 5.6 per cent water, the average coefiicient 

 of digestibility of protein was 62.8 per cent and the average ammonia content 0.15 

 I)er cent, as coinimred with a digestion coefficient for j)rotein of 76.7 per cent and an 

 ammonia content of 0.39 per cent in the case of 15 samples containing on an average 

 8.24 jier cent water. — f. w. woll. 



Molasses in the feeding- of farm animals, P. Dechambke {Bui. Agr. Alger ie el 

 Tunisie, 9 {1903), No. 19, pp. 438-445). — A summary and discussion of work in this 

 line. 



