Testing Milk and Its Products; A Manual for Dairy Students, Creamery and Cheese Factory Operators, Food Chemists and Dairy Farmers Volume 5

Testing Milk and Its Products; A Manual for Dairy Students, Creamery and Cheese Factory Operators, Food Chemists and Dairy Farmers Volume 5

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1899 edition. Excerpt: ...according to the strength of the rennet extract used. I46. The Marshall Rennet Test is used for the same purpose as the Monrad test. The time required for coagulating the milk is shown directly by a scale given on the apparatus. 1 Decker, Cheddar Cliccso Making, p. iii. CHAPTER IX. TESTING NILK ON THE FARH. I47. Variations in milk of single cows. The variations in the tests of milk of single cows from milking to milking or from day to day, are greater.than many cowowners suspect. There seems to be no uniformity in this variation, except that, the quality of the milk produced generally improves with the progress of the period of ' lactation; even this may not be noticeable, however, except when the averages of a number of tests made at different stages during the lactation period are compared with each other. Vhen a cow gives her maximum quantity of milk, shortly after calving, the quality of her milk is generally poorer (by one per cent. of fat, or less) than when she is drying ofi'. Strippers' milk is therefore as a rule richer in fat than the milk of fresh cows. I48. By testing separately every milking of a number of cows through their whole period of lactation, the results obtained have seemed to warrant the following conclusions in regard to the variations in the test of the milk from single cows, and it is believed that these conclusions allow of generalization. 1 1. Some cows' milk tests about the same at every milking. Such cows generally give a uniform quantity of milk from day to day. 2. Other cows give milk that varies in an unexplainable way from one milking to another. Neither the morning nor the evening milking is always the richer, and even if the interval between the two milkings is exactly the same, ...show more

Product details

  • Paperback | 66 pages
  • 189 x 246 x 4mm | 136g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236958608
  • 9781236958600