In Vitro Evaluation of Noni Juice Extract Waste (Morinda citrifolia L.) in Lactating Dairy Goat Diet

Noni juice extract waste is a waste product of Noni juice that is not used optimally. Noni juice extract waste contains plenty of bioactive compounds such as polyphenols and saponins. In vitro screening of addition Noni juice extract waste (NJEW) in lactating dairy goat's diet was conducted to evaluate their effect on rumen fermentability characteristics and digestibility. The measured variables were pH, volatile fatty acid (VFA), ammonia, microbial protein synthesis and dry matter digestibility, organic matter digestibility and degradation rate. The research was conducted using randomized block design with 5 diet treatments and 3 times rumen fluid intake as blocks. The diet treatments consist R0=60% Napier grass (NG)+40% concentrate (control); R1=60% NG+35% concentrate+5% NJEW; R2=60% NG+30% concentrate+10% NJEW; R3=60% NG+25% concentrate+15% NJEW; R4=45% NG+15% Ingidofera+25% concentrate+15% NJEW. Addition of NJEW in lactating dairy goat's diet had no significant effect on all variables except for VFA and ammonia production as it was significantly increased when the level of NJEW addition were raised (P<0.05). The use of NJEW up to 15% showed the optimum result as it was able to support the fermentability and digestibility. Therefore 15% NJEW with addition of 15% Indigofera showed the best fermentability performance throughout the variables.