Sentence:  "[…] I'd like you to give the calves two heaped tablespoonfuls [of Epsom salts] three times a day." / "Oh 'ell, you'll <WSD>skitter</WSD> the poor buggers to death!" / "Maybe so, but there's nothing else for it," I said. 
Meaning of the word marked with <WSD> tags:  To cause to have diarrhea.