THE DIGESTIBILITY OF CATTLE FOODS. 



BY J. B. LINDSEY AND P. H. SMITH. 



Foreword. 



The digestion experiments herein reported were made during 

 the autumn, winter and early spring of 1910-11, 1911-12, 

 1912-13 and also, two experiments, in the autumn of 1913. 

 They form part of what are known as Series XVI., XVII. , 

 XVIII. and XIX. The experiments made in these series and 

 not here included have either been published in previous reports 

 or will be found in later publications. 



The usual method was employed and has been fully described 

 elsewhere.^ The full data are here presented, with the excep- 

 tion of the daily production of manure and the daily water con- 

 sumption, in which cases, to economize space, averages only are 

 given. The periods extended over fourteen days, the first seven 

 of which were preliminary, collection of feces being made during 

 the last seven. Ten grams of salt were given each sheep daily 

 with water ad libitum. The sheep used in these experiments 

 were grade Shropshires of substantially uniform weight, born in 

 1907. 



1. Series XVI. 

 The hay used in connection with this series consisted of fine 

 mixed grasses, and contained a large proportion of June grass 

 (Poa 'prateiuis). The digestion coefficients of this hay, as ob- 

 tained in Period I., were applied to the two experiments on 

 beet pulp which follow : — 



' Eleventh report of the Mass. State Agr. Exp. Sta., pp. 146-149; also the 22d report of the 

 Mass. Agr. Exp. Sta., p.. 84. 



