ぼくちく is the standard on'yomi. 牧 (ボク) means pasture or to tend, and 畜 (チク) means livestock. ぼくちくう adds an incorrect prolonged vowel, ぼくちい misreads 畜, and ぼぐちぐ incorrectly applies rendaku to both kanji. This term refers to stock farming or ranching, specifically the raising of livestock like cattle or sheep in pastures, emphasizing the grazing aspect.

ぼくちくは標準的な音読みです。牧は「牧場」、畜は「家畜」の意味。放牧地で家畜を飼育する農業の一形態を指します。ぼくちくうは不必要な長音、ぼぐちぐは連濁の誤りです。