Background: Consumption of local feedstuff  Neptunia plena L. Benth and  Leersia hexandra Swartz as a ration by the animal subject is expected to promote cost efficiency and production, as well as provide essential nutrition needs. Therefore, this study aimed to evaluate ruminal dry matter digestibility (DMD), organic matter digestibility (OMD), ammonia (NH 3) production, and volatile fatty acid (VFA) in beef cattle.  Methods: Feed and rumen inoculum samples were prepared and analyzed for their proximate contents. There were five treatment groups based on the diet received by beef cattle, namely: T 1 ( Leersia hexandra Swartz 100 %); T 2 ( Neptunia plena L. Benth 100%); T 3 ( Leersia hexandra Swartz  15% + ( Neptunia plena L. Benth 15% + 70 % Other Feedstuffs); T 4 ( Leersia hexandra Swartz  20% + ( Neptunia plena L. Benth 20% + 60% Other Feedstuffs); T 5 ( Leersia hexandra Swartz  25% + ( Neptunia plena L. Benth 25% + 50% Other Feedstuffs).  In vitro approaches were used to determine the DMD, OMD, NH 3 production, and VFA in beef cattle. Results: The results showed that the highest DMD (P<0.05) was derived from T  5 (56.47%), followed by T  4 (56.45%) and T  3 (55.90%). T  5=62.40% significantly (P<0.05) generated the highest OMD followed by T  4=61.95% and T  3=60.82%. This treatment had the highest NH  3 value, namely 5.02 mM, compared with T  3=4.55 mM, T  4=4.50 mM, T  2=4.22 mM, and T  1=3.99 mM. Furthermore, T 5 had the highest VFA (P<0.05) compared with T  4, T  3, T  2, and T  1 with the value of 150.5, 133.0, 130.5, 130.0, and 123.5 mM, respectively.  Conclusions: The local feedstuff-based ration can be used to ensure the sustainable production of beef cattle

Background: Optimum productivity of beef cattle is achieved with adequate feed supply, both in quality and quantity. Consumption of local feedstuff Neptunia plena L. Benth and Leersia hexandra Swartz as a ration by the animal subject is expected to promote cost efficiency and production, as well as provide essential nutrition needs. Therefore, this research aimed to evaluate dry matter digestibility (DMD), organic matter digestibility (OMD), N-NH3 production, and volatile fatty acid (VFA) in beef cattle. Methods: Feed and rumen inoculum samples were prepared and analyzed for their proximate contents. There were five treatment groups based on the diet received by beef cattle. In vitro approaches were used to determine the DMD, OMD, N-NH3 production, and VFA in beef cattle. The research was conducted in the Laboratory of Feed Nutrient Science, Faculty of Animal Husbandry and Agriculture, Diponegoro University, Semarang. The data were analyzed using ANOVA at a significance level of 95%, and a Duncan Multiple Range Test. Results: The results showed that the highest DMD (P<0.05) was derived from T5 (56.47%), followed by T4 (56.45%) and T3 (55.90%). T5=62.40% significantly (P<0.05) generated the highest OMD followed by T4=61.95% and T3=60.82%. This treatment had the highest N-NH3 value, namely 5.02 mM, compared with T3=4.55 mM, T4=4.50 mM, T2=4.22 mM, and T1=3.99 mM. Furthermore, T5 had the highest VFA (P<0.05) compared with T4, T3, T2, and T1 with the value of 150.5, 133.0, 130.5, 130.0, and 123.5 mM, respectively. Conclusions: The local feedstuff-based ration contributed to beef cattle production.

Background: Consumption of local feedstuff Neptunia plena L. Benth and Leersia hexandra Swartz as a ration by the animal subject is expected to promote cost efficiency and production, as well as provide essential nutrition needs. Therefore, this study aimed to evaluate dry matter digestibility (DMD), organic matter digestibility (OMD), ammonia (NH3) production, and volatile fatty acid (VFA) in beef cattle. Methods: Feed and rumen inoculum samples were prepared and analyzed for their proximate contents. There were five treatment groups based on the diet received by beef cattle, namely: T1 (Leersia hexandra Swartz 100 %); T2 (Neptunia plena L. Benth 100%); T3 (Leersia hexandra Swartz 15% + (Neptunia plena L. Benth 15% + 70 % Other Feedstuffs); T4 (Leersia hexandra Swartz 20% + (Neptunia plena L. Benth 20% + 60% Other Feedstuffs); T5 (Leersia hexandra Swartz 25% + (Neptunia plena L. Benth 25% + 50% Other Feedstuffs). In vitro approaches were used to determine the DMD, OMD, NH3 production, and VFA in beef cattle. The data were analyzed using ANOVA at a significance level of 95%, and a Duncan Multiple Range Test. Results: The results showed that the highest DMD (P<0.05) was derived from T 5 (56.47%), followed by T 4 (56.45%) and T 3 (55.90%). T 5=62.40% significantly (P<0.05) generated the highest OMD followed by T 4=61.95% and T 3=60.82%. This treatment had the highest NH 3 value, namely 5.02 mM, compared with T 3=4.55 mM, T 4=4.50 mM, T 2=4.22 mM, and T 1=3.99 mM. Furthermore, T5 had the highest VFA (P<0.05) compared with T 4, T 3, T 2, and T 1 with the value of 150.5, 133.0, 130.5, 130.0, and 123.5 mM, respectively. Conclusions: The local feedstuff-based ration contributed to beef cattle production.