California Assembly votes on AB 4 11 to permit livestock carcass composting for ranchers

July 01, 2025 | California State Senate, Senate, Legislative, California


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California Assembly votes on AB 4 11 to permit livestock carcass composting for ranchers
The recent meeting of the Senate Agriculture Committee in California highlighted a significant legislative proposal aimed at transforming how ranchers manage livestock carcasses. Assembly Bill 411 seeks to allow ranchers to compost deceased animals on their farms, a practice already adopted by 49 other states. Currently, ranchers face limited and costly options for disposal, such as burial or rendering, which can be inefficient and problematic.

The bill's proponents argue that composting offers a practical, environmentally friendly, and cost-effective alternative. It not only reduces the risk of attracting predators but also diverts carcasses from landfills and ensures pathogens are effectively managed. Laura Snell, a livestock advisor, emphasized that composting can be done safely and efficiently, using materials ranchers already have on hand. Her research indicates that composting can process whole carcasses in as little as 90 days, providing a nutrient-rich product that can be reused in agriculture.

Support for the bill came from various stakeholders, including the California Cattlemen's Association, which highlighted the need for more disposal options, especially as rendering services become less accessible due to mechanical failures and labor shortages. The bill aims to provide ranchers with a much-needed solution for routine livestock mortalities, aligning with broader goals of supporting rural agriculture.

However, the proposal faced opposition from some rendering industry representatives who expressed concerns about the lack of oversight and the potential risks associated with composting. They argued that without trained professionals to manage the composting process, there could be significant health and environmental risks. Critics also raised issues regarding the bill's potential to increase greenhouse gas emissions and impact water quality if not properly regulated.

Despite the opposition, committee members acknowledged the need for alternative disposal methods, especially as current practices can lead to abandoned carcasses, which pose their own set of problems. The discussion underscored the importance of balancing the needs of ranchers with environmental and public health considerations.

As the bill moves forward, it will require careful consideration of the proposed amendments to ensure that it meets the needs of all stakeholders while providing a safe and effective solution for livestock mortality management in California. The committee's ongoing discussions reflect a commitment to finding practical solutions that support both the agricultural community and environmental sustainability.

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