Bulletin Volume 326-335

Bulletin Volume 326-335

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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. 1918 edition. Excerpt: ...low calcium content of the corn meal, the high phosphorus content of the wheat bran, and the high silicon content of the linseed oilmeal and alfalfa hay. Table IV, page 122, records the composition of the milk. It is a well-known fact of physiology that the composition of cow's milk cannot be altered in important ways, through the character of the feed, so long as the cow remains in a normal state of health, though the evidence on this subject does not preclude the possibility of any such effect whatever. Such being the situation we draw no conclusions from this work, as demonstrating specific effects of the mineral supplements used, on the composition of cow's milk, but would call attention to the fact that, in comparing the milk of Cows 4, 5 and 6 in Period I with the same in Period II, the three differ together (that is, in the same direction), as to ash, sodium, calcium, potassium, sulphur and phosphorus contents. In all cases these differences are slight, and perhaps within the normal range of variation. Table V, page 123, records the amounts of the constituents of the average daily rations. The main differences in the totals of the nutriment of a given kind, as fed in the two periods, are due to the increase in the alfalfa hay fed in Period II above the amount fed in the previous period, and also to marked differences in the composition of the hay fed in these two periods. The alfalfa fed in Period I was grown in Ohio, and that fed in Period II was grown in the far west, being purchased in the Chicago market. The influence of these differences in the amount and source of the hay are reflected in the increased amounts of nitrogen, nitrogenfree extract, calcium, potassium, sulphur, chlorine and silicon, and decreased amounts of sodium...show more

Product details

  • Paperback | 236 pages
  • 189 x 246 x 13mm | 426g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236804015
  • 9781236804013