Enzyme utilisation in hen diets

摘要

Unlike broiler production, the use of enzymes in wheat and barley based breeder and layer diets is not yet widespread. This is due to a number of different reasons: Trials to evaluate enzyme efficacy in layers and breeders are much longer than those for broilers. Measurement of feed intake is not always well controlled on a daily basis. Technical problems due to wheat grist size are not always overcome. Yolk pigmentation pref-erences in many markets favours the use of corn. However, an understandingof the mode of action of enzymes and an economic analysis shows a great potential for enzymes to be used in layer feeds.