Feed Recommended. 



to Neumann is not immediate but appears only after weeks and 

 then in insignificant proportions. Jensen succeeded in finding only 

 an insignificant influence on the milk from the feeding of considera- 

 ble amounts of lactates of iron, calcium sulphate, disodium phos- 

 phate, dicalcium phosphate, dimagnesium phosphate, potassium 

 chloride, chloride of sodium, and nitrate of potassium. Nitrates 

 appeared in the milk only after 75 gm. of saltpetre had been fed. 

 The administration of from 30 to 40 gm. of saltpetre failed to result 

 in the^presence of nitrates in the milk. The salt content of milk 

 therefore changes only insignificantly provided normal conditions 

 are present. According to Henseval and Mullie, the health of the 

 animals plays a part when salts pass into the milk. If these authors 

 fed from 5 to 25 gm. of saltpetre to 20 healthy and 8 diseased 

 animals, the milk of the sick animals always contained nitrates, 

 whereas the milk of the healthy animals did so only exceptionally. 

 Definite quantities of sulphuric acid are supposed to occur in milk 

 after the administration of Glauber salts. 



Of the various foods, meadow grass, green clover, rowen, 

 green alfalfa, and peas in which a large amount of young grain has 

 been sown are recommended, for instance, vetch with oats, barley 

 or rye, plants of the white mustard, rape, sainfoin, Kohlrabi tur- 

 nips, etc., with which oats, barley or rye have been grown. Fod- 

 der or straw should be mixed with the green feed. In the winter 

 instead of green feed, mangels, chopped roots, ensilage, grain, 

 potato slop and corn slop should be fed. 



Relative to the injurious effects of the various bacteria found 

 in feeds and pastures, see the chapter on milk abnormalities. Good 

 hay and good fodder may be recommended as dry feed. As con- 

 centrated food the substances mentioned by Hansen as indifferent, 

 or those food substances of the first and second group which are 

 recognized as milk and fat producers, will be found satisfactory. 



Rough fibrous foods cause a loss of energy, and are not well 

 utilized on account of the increased work of mastication and be- 

 cause the intestines are too greatly burdened by this feed. Individ- 

 ual feeding according to the milk yield appears advisable, and 

 the best milkers may be allowed additional rations corresponding 

 to their heavy production. In this regard of course the yield and 

 quality of the milk should be established by sample milkings and 

 examination of the secretion. In cow-fattening dairies the fatten- 

 ing of the animals should commence only in the last three months 

 since fattening foods and fattening of the animals diminish the 

 yield of the milk. 



Pure drinking water has a great influence on milk produc- 

 tion, and the animals should be enabled to partake of it freely ac- 

 cording to their needs. Heyken mentions a case in which each cow 

 yielded one-half liter of milk per day more, when instead of hard 

 marshy spring water containing iron, good well water was sub- 



