Journal of Animal Science and Veterinary Medicine

The scarcity of feeder stock of Bali cattle (Bos javonicus domesticus) in Kupang Regency is currently increasing. One of the contributing factors is the difference in management between the fattening business that produces beef cattle and the breeding business that produces feeders and heifers. The research aims to determine: the interaction between actors to increase the supply of feeder; the behavior of feeder population based on actual stock management, and the necessary policy interventions to increase the supply of feeder. The research was conducted by applying a dynamics systems approach. This modelling used ventana systems software. Data and mental models were collected through observation, focus group discussions, and in-depth interviews with key informants. The results showed that the interaction between actors was limited to the marketing of cattle for both local and domestic markets. The actual feeders supply management shows that cattle population tends to decline due to low calving rate (70%), high calves mortality (35%), and the high slaughtering of productive females (80%). The necessary policy interventions are to implement various efforts to increase the calving rate to be 80%, reduce the mortality rate by applying 2% feed supplementation, and reduce the sales of productive females to be 50%. The actual supply management of Bali feeders needs to be engineered by increasing stakeholder services that coordinate synergistically for learning innovation and technology. It is necessary to establish a breeder cooperative to suppress the sale of productive cows as the cause of its high slaughtering.