Calcium digestibility in cows as influenced by the excess of alkaline ions over stable acid ions in their diets.

1. Statistical analyses were carried out on results obtained under strictly-controlled conditions in metabolism stalls with forty-one different rations fed to 127 adult non-pregnant dry cows, and with fourteen other different rations fed to thirty-five adult non-pregnant lactating cows that had calved 2-6 months earlier and whose daily milk production ranged from 11 to 20 kg. 2.

Immunoglobulin transfer to calves and health problems in large bovine units.

The serum immunoglobulin levels were studied in 215 calves born on 4 farms. Each farm had at least 60 cows. There was a great variation in the immunoglobulin levels at 48 hours.