In the view of sustainable livestock production ample delivery of quality forage is very essential. A field experiment was conducted during 2012-13 to 2016-17 at Research Farm of Bihar Agricultural College; Sabour to identify the suitable forage based cropping system for quality fodder production to get sustainable agriculture production in round the year. The experiments is comprising of seven treatment in randomized block design (RBD), replicated thrice. The detail of all treatments were T1 (NB hybrid + Cowpea – Barseem - Lobia), T2 (Guinea grass + Cowpea - Barseem – Summer Bajra), T3 (Guinea grass + M. Sorghum- Barseem- Ricebean), T4 (Multicut Sorghum - Barseem – Maize + Cowpea), T5 (Sorghum- Barseem- Maize + Cowpea), T6 (Maize + Cowpea – Oat - Summer Bajra + Rice bean) and T7 (Sorghum + Cowpea – Oat – Summer Bajra + Rice bean). However in the cropping system the nutrient was supplied to different crop component on the basis of recommended dose of fertilizer as per treatment. The five years results revealed that Multicut Sorghum– Barseem - Maize + Cowpea cropping system under the treatment (T4) produced significantly higher Green fodder and dry fodder yield e. i. 1412 and 324.89 q/ha with higher net return (Rs. 2,29485) and benefit cost ratio (3.27) over the other treatments. The maximum average crude protein content was found in Napier Hybrid + Cowpea – Barseem– Lobia/cowpea cropping system (17.12%) which was significantly higher than that under all other treatments. Similarly, the maximum total crude protein yield was found in Multicut Sorghum – Barseem – Maize + Cowpea cropping system (25.78 q ha-1) followed by Sorghum – Barseem – Maize + Cowpea and Guinea grass + Cowpea – Barseem – Summer Bajra cropping systems e. i. 20.53 and 18.08 q ha-1 respectively. Inclusion of perennial grasses with annual forage provides continuous supply of green fodder round the year.