The red meat sector is vital to Australian agriculture. It is a large contributor to the value of agricultural production and exports and also accounts for a significant proportion of rural and regional employment. Developments in the red meat sector also affect other industries, both upstream and downstream. A supply chain management survey of the Australian lamb industry was conducted by distributing a mail questionnaire to lamb retailers and wholesalers. The objective was to establish a model explaining the supply chain performance indicator responsiveness of lamb retailers/wholesalers in terms of the trust and commitment. Multiple regression analysis was performed. Australian lamb retailers‘ antecedent cooperative behaviours (independent variables) were regressed on supply chain performance indicator responsiveness (dependent variable). The result of this research confirmed that trust and commitment are positively correlated with lamb retailers‘ responsiveness. Trust and commitment are a crucial part of any long-term relationships or alliance in agribusiness firms.