. Elementary principles of agriculture; a text book for the common schools. method of making the test. By its use the dairyman may learn which 11 ][ of his cows pay for their board. ._^^fe) Jl^p The milk from each cow is weighed, and a small sample usedto determine the per cent of but-ter-fat. Knowing these two facts,the total butter-yield for each cowmay be calculated. In this way„ ,^^ ^ J the value of the cow is definitely Fig. 160. Apparatus used , . ^ in making the Babcock kuowu. It is easier and moro*®^* rehable than a churning test.* In making the test, a measured quantity of milk is put
. Elementary principles of agriculture; a text book for the common schools. method of making the test. By its use the dairyman may learn which 11 ][ of his cows pay for their board. ._^^fe) Jl^p The milk from each cow is weighed, and a small sample usedto determine the per cent of but-ter-fat. Knowing these two facts,the total butter-yield for each cowmay be calculated. In this way„ ,^^ ^ J the value of the cow is definitely Fig. 160. Apparatus used , . ^ in making the Babcock kuowu. It is easier and moro*®^* rehable than a churning test.* In making the test, a measured quantity of milk is putinto a special flask (Fig. 160), and to this a smallquantity of acid is added. By following a few simpleoperations, for which directions come with everymachine, the per cent of butter-fat is read off directlyon the graduated neck of the bottle. Knowing theper cent of butter-fat and the quantity of milk, theamount of butter in each cows milk may be quicklycalculated. 352. How Dairy Cows Are Valued. The dairy cowis valuable according to her ability to convert tarm feeas. Far7n Dainjin^ S49 inio milk rich in butter-fat. Creameries and dairiespay for milk according; to the per cent of butter-fat,and not the mere gallons of milk. (See Fig. 124.) 352a. (a) Farmer A runs a small butter dairy. He boughta Babcock Test, and made a test of each cows milk with the fol-lowing results: Name of cow BlossomFlower .Nancy . Average dailyflow of milk Pounds23143120 Per cent of butter-fat in averagesamples Per cent Pounds butter-fat daily Calculate the amount of butter-fat in each cows milk. Onepound of butter-fat is equal to one and one-sixth pounds commer-cial butter. How much butter would these cows make in tenmonths? 353. Other Uses of the Babcock Test. Creameriesno longer buy milk by the gallon/ but pay so mucha pound for the butter-fat. This does away with thetemptation to water the milk. In cities, pubHc dairiesare required to sell pure milk, with a certain amountof b
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear
