368 



EXPERIMENT STATION RECORD. 



formed carbohydrates and tliat glycogen formation from protein has been noted 

 by other observers. His method of fat estimation depends upon double extrac- 

 tion and subsequent determination of the fatty acids, a method which, in his 

 opinion, gives particularlj' satisfactory results in studies of fat formation in the 

 body. 



Studies of the digestibility of dried potatoes, O. Kellner et al. (Landiv. 

 ^'cl•s. Stat., 68 (WOS), Xo. 1-2, pp. 3!)-()0). — In experiments with pigs the aver- 

 age coefiicients of digestibility of 6 sorts of dried potatoes were as follows: 

 Organic matter 91.3, protein 58.8, nitrogen-free extract 94.5, and crude fiber 

 73.2 per cent. In experiments with sheep the average values were organic 

 matter SG.5, protein 31.9, nitrogen-free extract 94.4, and crude fiber 16.1 per 

 cent. 



Digestion experiments, II, H. G. Knight, F. E. Hefner, and T. F. McCon- 

 NELL {W Homing Sta. Bui. 78, pp. S-J/-'/, figs. .J). — A continuation of previous 

 work (E. S. R., IS, p. 262). Native hay, oat straw, pea hay, and sweet clover, 

 and alfalfa from different cuttings were fed to sheep. The digestion coeffi- 

 cients found in this and the previous work were as follows: 



DigestibUity of native hay, oat straiv, pea hay, sweet clover hay, and alfalfa hay. 



Dry 

 matter. 



Protein. 



Nitro- 

 gen-free 

 extract. 



Crude 

 fiber. 



Ash. 



Native hay (wire grass) 



Native hay ( wheat grasses) . . 



Oat straw 



Pea hay 



Sweet clover hay 



Alfalfa hay (first cutting) 



Alfalfa hay (second cutting) 



Per rent. 

 53.27 

 63.64 

 54.83 

 67.10 

 60.88 

 61.95 

 64.25 



Per cent. Per cent. 



38.76 

 57.12 

 25. 72 

 78.24 

 75.46 

 77.56 

 79.55 



54.19 

 47.04 

 49.97 

 49. 55 

 30.94 

 38.46 

 44.75 



Per cent. 

 54. 31 

 66.46 

 .57. 21 

 79.27 

 72. 04 

 73.29 

 75.60 



Per cent. 

 58.30 

 67.49 

 54.13 

 50. 73 

 33.63 

 46.04 

 46.12 



Per cent. 

 33.81 

 38.90 

 48.79 

 33.39 

 65.79 

 47.04 

 55.33 



The western sedges (Carex) and rushes (Juncus), grown for hay throughout 

 the irrigated regions of the Laramie Plains, were found to be nutritious, 

 although the eastern species are supposed to have little value for stock. Oat 

 sti'aw is deemed more nutritious than eastern workers have found it to be. 

 Canadian pea hay is believed to be one of the most important hays for fattening 

 lambs. White sweet clover {Melilotus alba), one of the few alkali-resisting 

 plants, has a peculiar taste which stock do not seem to relish, but if cut early, 

 placed in the stack and salted, it is quite palatable. 



The forage plants which composed the native hay (wire grass), arranged in 

 the order of their predominance, were as follows: Juncus balticus (Baltic 

 rush), J. longistylis (long-style rush), Dcsehampsia cwspitosa (tufted hair 

 grass), Carex nebraskensis (Nebraska sedge). Astragalus bodini (Bodiu vetch), 

 Triglochin i)alustris and T. maritima (weeds), Agropyron occidcntale (western 

 wheat grass), and small amounts of many others. The first 6 species comprised 

 fully 90 per cent of the whole. 



The forage plants in the native hay in which wheat grasses predominate 

 included Agropyron sp. (species of wheat grasses), Deschampsia excspitosa, 

 PucdnelUa airoides (alkali meadow grass), Juncus balticus, J. longistylis, 

 Eleocharis paJustris (spike rush), and small amounts of several others. About 

 75 per cent of the whole consisted of the true grasses, mainly wheat grasses, 

 the balance being rushes and sedges. 



A feeding experiment with hay, turnips, and cut straw for sheep, J. 

 Saland {Ber. Norges Landbr. Iloiskoles Virks., 1S06-7, pp. 225-2-'f0). — A test 



