Digestibility of Feed Nutrients and Characteristics of Rumen Fluid Supplemented with Garlic Peel Antioxidants (Allium sativum) and Organic Minerals

This research aimed to determine the effect of adding garlic peel antioxidant supplementation and organic minerals to rations prepared with an RDP: RUP ratio of 60:40, on digestibility, rumen fermentation characteristics, microbial protein synthesis, protozoa population, and methane gas production.This research used an in vitro method, which used goat rumen fluid, with a completely randomized design with 4 treatments and 4 replications.Treatment consisted of P0=no supplementation; P1=3% organic mineral supplementation; P2=Supplementation 3% garlic peel; P4=Supplementation 1.5% organic minerals + 1.5% garlic peel.The results show that feed supplementation using garlic peel antioxidants and organic minerals significantly affects (P<0.05) on dry matter digestibility, organic matter digestibility, crude fiber digestibility, and crude fat digestibility.However, there was no significant (P>0.05)effect on pH values, VFA and NH3 concentrations.Furthermore, has a real effect on reducing protozoa populations and methane gas.This research concluded that rations with the addition of 3% garlic peel antioxidant supplementation and the addition of 1.5% garlic peel supplementation and 1.5% organic minerals can improve rumen fermentation characteristics and nutrient digestibility.However, further research needs to be done on in vivo methods directly on livestock.