A Nutritional Study Upon a Fungus Enzyme

Utility of Feed Enzymes and Yeast Derivatives in Ameliorating Deleterious Effects of Coccidiosis on Intestinal Health and Function in Broiler Chickens

“…The proposal of application of exogenous enzymes in poultry nutrition was initially suggested almost 100 years ago (20), however, the prohibitive cost did not allow their application in animal nutrition until many decades later (21). Xylanases and βglucanases were pioneer commercial feed enzymes to deal with problematic viscous feedstuffs such as barley and wheat (22)(23)(24)(25).…”

Multicarbohydrase Enzymes for Non-ruminants

“…In 1926, in Poultry Science, Clickner and Follwell described this product as having multiple activities, with the major activity appearing to be an amylase with a broad pH optimum. Hervey (1925) attributes the performance benefit to increased protein and starch digestibility, assumed to be brought on by direct digestion of those materials by the exogenous enzymes. Experiments in the 1950s and early 1960s by groups in Washington (Jensen et al, 1957; Fry et al, 1958) and Oregon (Arscott and Rose, 1960; Rose and Arscott, 1962) showed that adding an amylolytic enzyme preparation to barley-based broiler diets could reduce sticky droppings and improve growth, though the enzymes were ineffective in wheat based diets.…”

Effects of supplemental dietary enzymes on utilization of nutrients by calves

“…Poultry rations iviost of the research concerning the use of dietary enzymes in poultry reeds has been conducted in the past six years. However, there were a few early reports on the use of enzymes in chick rations such as Harvey (1925) and Clickner and Frollwell (1926). These workers observed an increased rate of growth of chic&s fed fun.-al protease enzyme prepara tions .…”