Lecture 38 Evolution & Domestication - Livestock Flashcards

1
Q

Mulesing (3)

A

-skin is cut away from breech area
-prevents flystrike
-welfare issue

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2
Q

Potential alternatives to mulesing (3)

A

-selective breeding
-clips
-cytotoxic injections

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3
Q

New Zealand has the

A

Highest density of sheep per capita

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4
Q

Australia is the world’s largest exporter of

A

Cattle and sheep

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5
Q

Which sheep is adapted very well to Australia

A

Merino

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6
Q

Spanish produced ___sheep for quality wool

A

Merino

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7
Q

Sheep were initially kept for (3)

A

-meat
-milk
-skins

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8
Q

Selection of woolly sheep began around

A

6000 years ago

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9
Q

Ancient sheep were (2)

A

-plucked, not shorn
-hair fibres were used (longer and coarser than wool fibres)

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10
Q

Domestication of sheep was ideal because (5)

A

-lack of aggression
-manageable size
-early sexual maturity
-social nature
-high reproduction rates

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11
Q

_____ were the first livestock species to be domesticated

A

Sheep and goats

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12
Q

There are ____ breeds of domesticated sheep

A

1000

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13
Q

Ovis aries

A

Domestic sheep

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14
Q

The primary ancestor of domestic sheep is thought to be

A

Asiatic Mouflon (Ovis orientalis)

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15
Q

Dairy breeds: (3)

A

-Holstein friesian
-jersey
-guernsey

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16
Q

Beef breeds: (4)

A

-angus
-Hereford
-Belgian blue
-charolais

17
Q

Taurus lineage has (2)

A

-flat back
-more upright ears

18
Q

Cross of Indicine and Taurine is

A

Droughtmaster

19
Q

Cattle ticks transmit

A

Babesia bovis

20
Q

Zebu (indicine) lineage (6)

A

-used mostly for meat
-hump at shoulders
-droopy ears
-heat tolerant
-hardy
-tolerance to parasites & disease

21
Q

Indian aurochs are the

A

Zebu cattle

22
Q

Eurasian Aurochs are

A

Taurine cattle

23
Q

Cattle are used for (4)

A

-meat
-milk
-hide
-manure

24
Q

All domestic cattle descend from

A

The wild ox or aurochs (Bos primigenius)

25
Q

Two species of cattle are

A

-taurine (Bos taurus)
-zebu (Bos indicus)

26
Q

Taurine and zebu cattle can

A

Interbreed

27
Q

Aurochs site of origin is most likely

A

India

28
Q

Three subspecies of aurochs are

A

-Indian
-Eurasian
-North African

29
Q

Eurasian aurochs were domesticated into

A

Modern Taurine cattle breeds

30
Q

Indian Aurochs were domesticated into the modern

A

Zebu (Indicine) Cattle

31
Q

Which Auroch became extinct prior to the Middle Ages

A

North African Auroch