92 



Australian Dairy Legislation. [may, 



First Sample. Second Sample. 

 Weeks Months 



after Calving. after Calving. 



For spring cows 6 ... b\ to 7^ 



For summer cows ... ... 8 ... 6 7 



For autumn cows 8 to io ... 5^ 7 



In case only one test is to be made, approximately correct 

 results may be obtained by testing the milk in the sixth month 

 from calving in the case of spring cows, in the third to the 

 fifth month in the case of cows which calve in the summer 

 or autumn. In all cases composite samples of the milk are 

 to be taken for four days in the middle of the month. 



The Maryland Station, after a very exhaustive examination 

 of this, question, decided that the seventh month of the 

 lactation period would be the best to test a cow when only 

 one test is to be made. When two tests are to be made at 

 different periods, this station found that the third and eighth 

 months would be best, and when three tests are to be made* 

 the third, sixth and eighth months. 



Owing to variations in the composition of the milk, more 

 especially in the morning and evening milk, it is necessary 

 to take several samples which should be thoroughly mixed 

 so as to obtain for analysis a fairly representative sample. 



In taking a sample for analysis it should be borne in mind 

 that there is frequently great variation in the composition 

 of the morning and evening milk from the same cow. If it 

 is desired therefore to ascertain the average amount of butter- 

 fat in the milk, a representative sample should be made up 

 by mixing in equal quantities, samples carefully taken from 

 hoth the morning and evening milk. 



The regulations which are now in force in Australia under the 

 •Commerce Act of 1905, prohibit the export of many articles of 

 agricultural produce unless a " trade 

 Australian Dairy description" is applied to the goods by 

 Legislation. means of a label or brand indicating their 

 true description, the word " Australia," 

 the name of the State of origin, and of the manufacturer 

 •or exporter, or his registered brand, and the net weight, except 

 in the case of carcases of meat. 



