Henry W. Garren

Influence of High Levels of Vitamins on Resistance of Chicks to Fowl Typhoid.

Summary Levels of all known required vitamins 10 times in excess of that required for normal growth, plus 0.1% ascorbic acid decreased the mortality rate of chicks experimentally infected with S. gallinarum. Excess quantities of fat soluble vitamins, water soluble B vitamins, or ascorbic acid alone, did not reduce mortality from this infection.

Attempt to Stimulate Lymphatic Gland Changes of Fowl Typhoid With Adrenal Cortex Extract.

Summary Daily levels of ACE for 6 days in amounts of 0.25 to 3 ml caused a significant reduction in weight of the thymus and the bursa of Fabricius. Two ml daily were adequate to cause both the weight loss and histological changes occurring in the bursa of Fabricius from chickens with fowl typhoid. Other significant changes observed for the groups given 1,2, and 3 ml daily included: decrease in body weight, increase in relative pituitary weight, reduction in adrenal weight (less cortical tissue), and increase in liver weight which bore a linear relationship with the level of ACE administration.