1918.] ANIMAL PKODUCTIOIT. 665 



milligrams of commercial pancreatin or trypsin could not have great importance 

 as a therapeutic measure. 



" Some tryptic digestion may undoubtedly take place in a slightly acid 

 medium, and therefore, at times, in the stomach." 



ANIMAL PEODTJCTION. 



The relative value of field roots, F. T. Shutt {Canada Expt. Farms Rpts. 

 1916, pp. 115-121). — Analytical data are reported for a number of years on 

 the composition of varieties of mangels, turnips, and carrots. For 1915, mangels 

 varied in dry matter from 7.32 per cent to 13 i>er cent, and in sugar from 2.86 

 to 6 per cent. A test was made of the influence of hei'edity in mangels vpith 

 two widely different varieties. Gate Post and Giant Yellow Globe, which were 

 planted side by side for a period of 16 years. Gate Post invariably proved 

 superior, averaging for the whole period 23 per cent more dry matter and 33 per 

 cent more sugar than Giant Yellow Globe. 



Thirty-three varieties of turnips were analyzed to determine the average 

 composition for a 10-year period. For the year 1915 there was a difference of 

 5.58 per cent of dry matter, indicating that 2,000 lbs. of the best variety was 

 equivalent to 3,860 lbs. of the poorest. The sugar content was fairly constant, 

 averaging approximately one-fifth that of mangels. 



Analyses made in 1915 with 10 varieties of carrots showed a difference in dry 

 matter of 2.84 per cent between the best and poorest varieties, indicating that 

 2,000 lbs. of the former was equal to 2,665 lbs. of the latter. 



The average composition of mangels, grown for 11 years, was, dry matter 

 11.02 and sugar 5.89 per cent ; for turnips, grown for 10 years, dry matter 10.2 

 and sugar 1.27 per cent ; and for carrots, grown for 10 years, dry matter 10.37 

 and sugar 2.69 per cent. 



Utilizing the sorghums, T. F. Hunt {California Sta. Circ. 187 {1917), pp. 

 7). — Attention is called to the decreasing number of live stock due to present 

 world conditions. To again increase this production is a slow process, and the 

 first requisite is more feed. This circular emphasizes the value of the sorghums 

 under California conditions and methods of conserving and feeding them. 



Silage investigations {Kansas Sta. Rpt. 1916, p. 21). — It is deemed possible, 

 but difficult, to make silage from alfalfa alone. It requires rigid exclusion of 

 the air, and the addition of an easily fermentable carbohydrate, as molasses, corn 

 chop, cane butts, or rye, is helpful, although these methods are not very prac- 

 tical. Meal from germinated com is more effective than that from com not 

 germinated. 



Inspection of commercial feedstuffs, P. H. Smith {Massachusetts Sta. Con^ 

 trol Ser. Bui. 7 {1917), pp. 30). — The results of the feeding stuffs in.spection 

 from September 1, 1916, to April 1, 1917, are given, including analyses of 1,082 

 samples. Prices for the period have ruled high and supplies scarce, but with 

 few exceptions goods offered have been as represented. Carbohydrate feeds 

 have ruled relatively higher in price than proteins. 



The feeds analyzed were cottonseed, linseed, corn germ, peanut, sesame, and 

 gluten meals; distillers', brewers', yeast, and vinegar grains; malt sprouts; 

 wheat middlings, red dog flour, and low-grade flour; durum wheat products; 

 rye middlings; corn meal, corn bran, and corn and cob meal; ground oats and 

 oat groats ; hominy feed ; provender ; dried beet pulp ; cut clover ; alfalfa meal ; 

 and molasses, mixed, and proprietary feeds. 



The analyses of cottonseed meals showed a lowered protein content, indicating 

 the addition of ground hulls. The peanut oil cake, evidently without the hull, 

 was of excellent quality. 



