Addition of avocado (persea americana) leaf extract and carrot (daucus carota) leaf extract in starter phase broiler feed for production of low-fat meat for elderly

Abstract

High-fat meat causes fatty liver, hypertension, stroke, and heart attack becomes less safe for the elderly. The research used plants that have the potential to reduce fat synthesis. This study was conducted in the starter phase to provide an overview of performance and fatty conditions in the finisher phase. In vivo testing of 84 broilers using a completely randomized design with seven treatments used commercial feed as basal feed, avocado leaf extract, and carrot leaf extract. The treatment is as follows: T1: basal feed (control) did not add ALE and CLE; T2: basal feed + (2.5% ALE and 2.5% CLE); T3: basal feed + (5% ALE and 5% CLE), T4: basal feed + (5% ALE and 0% CLE), T5: basal feed + (5% ALE and 2.5% CLE); T6: basal feed + (0% ALE and 5% CLE); T7: basal feed + (2.5% ALE and 5% CLE). The treatment is carried out for 21 days, and the parameters of the study were feed intake, body weight gain, and feed conversion. The diet with a CLE at 5% gave the lowest feed conversion in the first and the third weeks (P<0.05). Feed consumption and body weight gain in the first and second weeks were highest in the use of ALE and CLE at 2.5% respectively increasing the body weight in the first and the second weeks. The avocado leaf extract and carrot leaf extract used in the diet improve the feed conversion of broilers in the starter phase.