Utilization of Indigofera zollingeriana in layer feed on egg production and quality in Indonesia: A mini review

Indigofera zolingeriana (IZ) is a nutrient-rich plant. It is rich in macronutrients, several minerals, and vitamins. This makes indigofera suitable for use as a feed ingredient or supplement for poultry. This review article aimed to collect and provide information on several research findings that use indigofera leaf meal as part of poultry feed. The methods used in this review article are literature review and descriptive method, which is a systematic and explicit method to identify, evaluate, and develop research results and ideas generated by researchers. The addition of indigofera leaf meal to poultry rations can affect egg production and egg quality. These include the number of eggs, egg weight, yolk weight, albumen weight, eggshell weight, and yolk score. The addition of indigofera leaf meal by 2% to 10% in feed can increase feed consumption and egg weight in layer. Several research cases reported that all indigofera leaf flour administration had a good effect and could maximize the benefits of indigofera leaves as feed, supplements and additives to increase poultry egg production and fertility.