ANIMAL PRODUCTION. 



1069 



exiterience of some of tlio host farmers. Tho toi)ics discnssetl are the practi- 

 cability of swine ralsinj; In Xorth Dakota, bacon r. lard boj^s. the selection and 

 nietliods of liandliiifi breedinj; stock, feedinj; and niana.ueuient of the ynnnj? I'li^s, 

 the use of fora,ire crojis, boy fences, linisbing for market, sanitation diiiiiinji, etc., 

 sbelter, and i)reventive ujeasures concerning bog cbolera and swine i)lague. 



Protein digestion in horses, E. Rosenfeld (Uber die Eiiccissi-cnluuiiii(/ im 

 Magcn dr.s Pfcrdcs. Inauf). Diss., Univ. Leipsic, 190S, pp. 55, fig. 1). — Tbe 

 antbor made iK).st-mort<'m examinations of tbe contents of tbe stomacb and 

 small intestines of 9 borses, eacb of wbicb bad been fed 1,500 gm. of oats. 



In general, tbese results agree witb tbose of Grimmer (E. S. 11., IS, p. 1009). 

 Tbe pyloi'us portion contained a larger percentage of water tban otber parts of 

 tbe stomacb. One-balf bour after eating all portions of tbe stomach were 

 alkalin, and tbe esophagus end of tbe stomacb remained alkalin for an bour. 

 In one borse the reaction was neutral 3 hours after eating, whereas in all otber 

 cases reactions were acid after one-half hour. 



Tbe i)ercentage of protein products in tbe stomach at different periods are 

 given in the following table : 



Protein cleavage products in the stomach of hoiiscs. 



" Per cent of total nitrogen. 



Tlie cleavage products in tbe small intestines at different intervals are sliown 

 in the following table: 



I'rotein cleavage products in the small intestine of horses. 



" Per cent of total nitrogen. 



'• Per cent of total incoagiilal)lc nitrogen. 



At the beginning of the digestive period there were more products of protein 

 hydrolysis in the fundus than in otlier portions of tlie st(Hnach, but this differ- 

 i-nce did not continue for any considerable length of time. Protein digestion 

 was very rapid in tbe small intestine. Albumoses were there far less in amount 

 than the simi)ler compounds. 



