1918, G. C. Humphrey, The Rural Efficiency Guide, Volume 4: Stock Book, page 22,
Deficiencies which are common to the hind quarters of the cow, include shortness and narrowness of rump, a drooping rump, narrowness between the thurls and pin bones and thickly fleshed thighs.

Also I would call attention to the fact that the heifers were wider through the thurls at five months of age than through the hips, but after they had become mature cows they were wider through (or across) their hips, than across their thurls.

[?Although] other measurements were taken, only height at withers, depth of chest and width between thurls were analysed statistically; these measurements are representative of development in height, depth and width of body, respectively.

Her pin bones, thurls, and hips should be wide apart and level. The pin bones are the points at the rear of the cow protruding out from the pelvis. The thurls are the hip joints where the rear legs attach on either side of the cows pelvis.

Thurl

Meaning

Noun

Verb

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