> low efficiency cows Interestingly, the "alternative" breeds I'm familiar with are marketed as _high_ efficiency because they produce milk on very little inpu

> low efficiency cows Interestingly, the "alternative" breeds I'm familiar with are marketed as _high_ efficiency because they produce milk on very little input (all or mostly grass; very little corn and soy). For example: https://licnz.com/products-services/lic-cow-breeds/ https://licnz.com/products-services/lic-cow-breeds/