Bovine Mastitis.

roid had been active to maintain calcium due to low intake. They proposed the following formula for use during the dry period (in pounds): Ground barley, 800; rolled barley, 600; wheat bran, 500; cottonseed meal, 100; monosodium phosphate, 40; and salt, 10. Each cow should receive 8 pounds a day for 6 weeks before freshening plus 8 pounds of oat hay or poor hay. In several herds where the incidence of milk fever was very high, feeding of the low-calcium diet reduced the number of cases from 30 to 3 percent. Production was not reduced noticeably. Research conducted by J. VV'. Hibbs and H. D. Pounden, of the Ohio Agricultural Experiment Station, showed that the addition of vitamin D to the diet of the cow 5 days before calving reduces the incidence of milk fever.