Depending on the amount of capital you have at your disposal, it may be a good idea to hire a PR firm to help deal with any negative PR from your competitors. 

It might also be the case that beef producing companies will identify your approach as more profitable than their own, and wish to license your technology, acquire your business, or invest in it as a hedge. It may therefore be worth making active efforts to align your competitor's interests with your own.

If those aren't options, or they have failed, then you might try asking for lobbying aid or legal support from animal welfare groups.
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