The effect of soybean meal substitution with Indigofera zollingeriana leaves and turmeric as phytobiotics in digestibility of crude protein and crude fiber of native chickens

Abstract

Consumer demand for native chicken meat is increasing every year. The availability of protein feed ingredients for poultry is still a major problem, especially for soybean meal which is currently still filled with imports, so that the price of soybean meal is expensive which indirectly increases production costs. One of the feed ingredients that have the potential as a source of protein feed ingredients is the shoot leaves of Indigofera sp, namely Indigofera zollingeriana. This plant is very good as a source of forage for poultry. Apart from paying attention to the nutritional content of the feed given, one of the factors that must be considered is the use of herbal ingredients such as turmeric (Curcuma domestica Val.). The active substance content possessed by turmeric is curcumin and essential oils which function as colagoga (can increase bile secretion) to increase appetite which in turn will increase life weight. The design used in this study was a completely randomized design (CRD) with 4 treatments and 4 replications. The research treatment arrangement was as follows R0: Control feed (without the addition of indigofera leaf shoots and turmeric), R1: 10% ILS substituted soybean meal (protein = 2.82%) + 2.5% phytobiotic turmeric, R2: 15% ILS substitute soybean meal (protein = 4.23%) + 2.5% phytobiotics of turmeric, R3: 20% ILS substitutes soybean meal (protein = 5.64%) + 2.5% phytobiotics of turmeric. The parameters observed were digestibility of crude protein and digestibility of crude fiber. The results showed that the substitution of soybean meal protein with indigofera zollingeriana shoot flour at different levels and the addition of turmeric had no significant effect on crude protein digestibility and crude fiber digestibility (P> 0.05). The average value of protein digestibility was 45.75% -63.25% and the fiber digestibility was 31.37% -51.08%. This study concluded that 10% Indigofera zollineriana shoot flour substituted soybean meal and 2.5% turmeric phytobiotics provided the effective digestibility of crude protein and crude fiber in native chickens.