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DAIRYING NOTES (Frol '"T'he Austtrailha Dairy Iteview") . Importance of Roughage. SAlthough cattle can Ihe fed' entirely on concentrates, without any rough. age, they usually do not thrtvo under these conditions; their appetites are capriciots, rumination Is supressod and milk production is usually atf fcctcd. On these grounIds (says tho ?'.S.'W. ".Agricultural Gazette") . it haIs always boon recommended when feeding concentrates and where there .u, little or no grasing, that,?- :..·cS tain amount of" roughnge such as. hay, chaff, or silage, be fed-with a minimum or, say, 8 to 10 lb. of hay or chaff, or :10 lb. of silage or green fodder per cow per day, . However Overseas observations, sutpported by recent obseorvations and experiments by the N.S.W. Dept. of Agriculture, have indicated that roughage. Is not only of Importance in maintainlng nIormal digestion, but. in maintalning the butterfat content of milk.