Evaluation of acacia (Acacia mangium) extract as feed additive against haemonchus contortus by in vitro

Acacia (Acacia mangium) is a fast-growing tree species that is often found in Indonesia. Acacia bark contains a number of secondary metabolites such as tannins, saponins and flavonoids. Tannin compounds have been widely studied to inhibit the growth of unwanted microbes, including pathogens, and used as antihelminthics. This study aimed to evaluate the effect of tannins as ruminant feed additives from acacia mangium to inhibit nematode parasites in the digestive tract of ruminants. As an initial stage of research, this research was carried out using in vitro methods. This research consisted of 5 treatments, namely negative control without the addition of tannin extract, positive control namely 1% and 2%, then 1% and 2% tannin extract. The worm species used was Haemonchus contortus which was taken from the abomasum of sheep and then the treatment was tested in vitro for 12 hours. The results obtained showed that the addition of 1% and 2% tannin extract could inhibit H. contortus in vitro. Although the inhibition is not as good as Albendazole, acacia tannin extract can be a candidate for feed additives for ruminants.