All of my life, people have fed chicken litter to cattle. Poultry is Ga's biggest animal crop. Usually it is mixed with something else., The man Clay works for has 8 chicken houses, and cleans out chicken houses for others. He mixes it with the spent mash from the Budweiser plant, sorghum silage, and cotton seeds/millings from the gin across the road. Mike used to sell it and spread it for folk's hay and pastures, but with feeding 900-1000 calves a year, he doesn't anymore. And he cleans out just about all the houses in 50 miles or so from his place, so hard to find for pastures around here. Back when we had dairies around here, I don't recall anyone feeding their dairy cows chicken litter. They would spread it on pastures and hay, though.