Lecture 38 Evolution & Domestication - Livestock Flashcards
Mulesing (3)
-skin is cut away from breech area
-prevents flystrike
-welfare issue
Potential alternatives to mulesing (3)
-selective breeding
-clips
-cytotoxic injections
New Zealand has the
Highest density of sheep per capita
Australia is the world’s largest exporter of
Cattle and sheep
Which sheep is adapted very well to Australia
Merino
Spanish produced ___sheep for quality wool
Merino
Sheep were initially kept for (3)
-meat
-milk
-skins
Selection of woolly sheep began around
6000 years ago
Ancient sheep were (2)
-plucked, not shorn
-hair fibres were used (longer and coarser than wool fibres)
Domestication of sheep was ideal because (5)
-lack of aggression
-manageable size
-early sexual maturity
-social nature
-high reproduction rates
_____ were the first livestock species to be domesticated
Sheep and goats
There are ____ breeds of domesticated sheep
1000
Ovis aries
Domestic sheep
The primary ancestor of domestic sheep is thought to be
Asiatic Mouflon (Ovis orientalis)
Dairy breeds: (3)
-Holstein friesian
-jersey
-guernsey