The effect of feed enzymes on nutrient and energy retention in young racing pigeons

Eight nests of two squabs were weaned at 24 days then housed in individual cages. A squab of each nest received a commercial feed for racing pigeons, the other group received the same feed but supplemented with xylanase, beta -glucanase, pectinase and hemicellulase. No difference in body weight was o bserved between groups. Despite reed restriction, intake was higher for enz yme-supplemented diet. When related to feed intake, excreta were lower by 1 1% for enzyme-supplemented diet. Enzyme addition improved dry matter, organ ic matter, protein, energy and fibre retention. These results may show that pigeons are more sensitive to enzymes than common poultry.