The cattle industry, particularly the dairy sector, for instance, has high levels of ammonia emissions which is attributable to the production cycle.
Mae’r potensial hefyd am fwy o betruster o ran manteisio ar y brechlyn, er enghraifft oherwydd pryderon ynghylch ffrwythlondeb neu gynhwysion y brechlyn yn cynnwys cynhyrchion cig.