. Canadian journal of agricultural science. Agricultural Institute of Canada; Agriculture. f/gjJL $UAa Ica^n ^ £i('KUln '&\eedt>. It is probably upon the more or less mixed breeds of sheep thus produced that all modern breeds of sheep are based. The Old Testament record of Jacob's method of breeding is suggestive of "how the sheep got its white coat," while Arab and Moor- ish traditions point to the probable evolution of the Merino breed along the shores of the Mediterranean. Broadly, the evolution of the really modem breeds of sheep ihas been based upon.â (a) Racial tendency
. Canadian journal of agricultural science. Agricultural Institute of Canada; Agriculture. f/gjJL $UAa Ica^n ^ £i('KUln '&\eedt>. It is probably upon the more or less mixed breeds of sheep thus produced that all modern breeds of sheep are based. The Old Testament record of Jacob's method of breeding is suggestive of "how the sheep got its white coat," while Arab and Moor- ish traditions point to the probable evolution of the Merino breed along the shores of the Mediterranean. Broadly, the evolution of the really modem breeds of sheep ihas been based upon.â (a) Racial tendency to variation. (6) The direct and indirect action of the varied environment tending to produce variation. Natural and artificial selection working upon these variations jiiave resulted in the evolution of the typi- cal breeds of sheep probably on the lines indicated in the following graph. GRAPH Thus the sheep in evidence today are:â (a) The Lustre breeds w'.iich have probably been derived from tihe Later Mountain Bree^^ls by actual selection and crossing acting throxigh many generations. Suc^ breeds are the , Lincoln, Leicester, Long Devon, etc., etc. (b) The ]\rountain Breedsâof which the most important are the Blackfaeed and Herdwick. The Welsh is a Mountain sheep with much Down blood â in it and judging from tiie crosses produced be- tween it and the Soay, not very far removed from the pure Soay. The Cheviot, another Mountain breed, has also a strong Down foundation but is nearer to tihe true mountain,âor Lustre- breedâthan is the Welsh. It is not likely that there is any truth in the suggestions which .have \ k M |^^^ â i^'^Mi^i^m^^M ^K^ '^ :â â â ^^.,:iMK^ w . r^tr^ m='fmM'^ I >â¢> 'L ^^t^^^^ri^ imi^' 'â¢â¢"â .--'"' .: â ⢠-'.-â¢' â â - Figure 4. Soay Sheep. been made that both the Cheviot and Herdwick breeds, localized on tihe north-east and north-west coasts of England , have develope
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