Shopping on line can be easy, simple and save you lots of money. It can also take a lot of your time, frustrate you, and result in unwanted purchases. Now the same can be said for regular high street shopping, but with the vast opportunity presented by the Internet it will pay you to spend a few minutes reading this and understanding how to better optimize your Domestic Sheep shopping experience:
1. Compare - without doubt the biggest advantage that the Domestic Sheep offers shoppers today is the ability to compare thousands of Domestic Sheep at a time. This is a great thing, but not necessarily all the time! Too much can be daunting at times so take advantage of the great comparison sites and where possible let them do the hard work for you.
2. Research - if it has been said it will be on the internet. Ignorance is no longer a justifiable reason for buying the wrong thing. Take the time to research in detail everything that you could possible want to know about
3. Testimonials - don't know anybody that has bought a Domestic Sheep? Wrong! If the Domestic Sheep is good the internet will let you know. Use the Internet as a friend and get testimonials before you buy.
4. Questions - Got a question about Domestic Sheep then search the Forums, FAQ's, Blogs etc. Don't be afraid to ask .....
5. Reputation - Never heard of the company selling Domestic Sheep? Don't worry, no reason why you should know every company in the world, but you know someone that does! Use the internet to find out what people are saying about Domestic Sheep and build up a picture of their reputation for sales, returns, customer service, delivery etc.
6. Returns - still worried that even after all of the above your Domestic Sheep wont be what you want? Check out the returns policy. There is so much competition now that someone, somewhere is bound to offer the terms that you are comfortable with.
7. Feedback - happy with your Domestic Sheep then let people know, after all you are depending on others people input in your buying decision, so why not give a little back.
8. Security - check for the yellow padlock on the Domestic Sheep site before you buy, and the s after http:/ /i.e. https:// = a secure site
9. Contact - got a question about Domestic Sheep, or want to leave a comment then check out the sites contact page. Reputable companies have them and respond.
10. Payment - ready to pay for your Domestic Sheep, then use your credit card or PayPal! Be aware of companies that don't accept them, there may be genuine reasons but given the huge amount of choice you have when buying online there is no reason at all not to buy via credit card or PayPal.
{{taxobox| color = pink| name = Domestic sheep| status = DOM| image = Flock of sheep.jpg| image_width = 250px| image_caption = A flock of sheep| regnum = Animalia]| classis =
Mammalia]| familia =
Bovidae]| genus =
Ovis],
1758-->
The
domestic sheep (
Ovis aries), the most common species of the
sheep genus (
Ovis), is a woolly ruminant
quadruped. It is probably descended from the wild mouflon of South Asia and
Southwest Asia. Female sheep are referred to as
ewes, intact males as
rams,
Castration males as
wethers, yearlings as
hoggets, and younger sheep as
lambs. In sheep
husbandry, a group of sheep is called a
herd,
flock or
mob. Sheep husbandry has a vast
Domestic sheep#Glossary, which varies frequently with region.
The sheep is related to the
goat, both belonging to the goat antelope subfamily Caprinae, itself part of the family Bovidae. However, the genes of sheep and goats differ so greatly that cross-species hybrids rarely occur, and are always infertile. A hybrid of a ewe and a buck is called a
sheep-goat hybrid, not to be confused with a geep, which is a
Chimera (genetics).
Cultural significance
religious texts since time immemorial. Here, sheep are seen in front of
Jerusalem's
Damascus Gate.Sheep have had associations with many cultures, especially in the
Mediterranean area and
Great Britain, where they form the most common type of livestock in pastoralism. Selective breeding of sheep has frequently occurred.
A wide
symbology relates to sheep in ancient art, traditions and culture. In Egyptian mythology the ram was the symbol of
Heryshaf.
Judaism uses many sheep references including the
Passover lamb. Christianity uses sheep-related images, such as:
Christ as the good shepherd, or as the
Sacrificial lamb Lamb of God (
Agnus Dei), the
bishop's
Pastoral, the lion lying down with the lamb (a reference to all of creation being at peace, without suffering, predation or otherwise). Easter celebrations in
Greece and Romania traditionally feature a meal of Paschal lamb. Sheep also have considerable importance in
Arab culture; Eid ul-Adha is a major annual festival in
Islam in which a sheep is sacrificed.
.Herding sheep plays an important historico-symbolic part in the
Jewish and
Christianity faiths, since
Abraham,
Isaac, Jacob, Moses, and King David all worked as
shepherds.
The ram is the first sign of the Western
zodiac, in which it is known as
Aries (astrology). The sheep (or
goat) also forms one of the animals associated with the 12-year cycle of in the
Chinese zodiac, related to the
Chinese calendar. Chinese tradition associates each animal with certain personality traits. See:
Sheep (Zodiac).
The raising of sheep for wool and meat became a major industry in colonial
Australia and New Zealand and remains significant. As a result, sheep and sheep shearing have become an important part of the folklore and cultural tradition of these two countries. In New Zealand, sheep outnumber the human population 12 to 1.
Sheep are often associated with obedience due to the widespread perception that they lack
intelligence (trait) and their undoubted herd mentality, hence the pejorative connotation of the adjective 'ovine'. In
George Orwell's satirical novel
Animal Farm, sheep are used to represent the ignorant and uneducated masses of revolutionary
Russia. The sheep are unable to be taught the subtleties of revolutionary ideology and can only be taught repetitive slogans such as "Four legs good, two legs bad" which they bleat in unison at rallies.
The rock group Pink Floyd wrote a song using
Sheep (song) as a symbol for ordinary people, that is, everyone who isn't a pig or dog. People who accept overbearing governments have been pejoratively referred to as "sheeple".
In contemporary events, controversy has raged over a scientific study at the
Oregon Health and Science University which, because of the unedited printing of a press-release by
PETA in a British newspaper, has been accused of attempting to find a way to breed out the minority trait which causes some rams to prefer Homosexuality relations. Further investigation revealed it only attempts to study the genetics and circumstances which produce the phenomenon and not "cure" it. Seattle Times
Breeds
ram demonstrates the wide variance in sheep traits that belies the prototypical appearance of the animal.There are many List of sheep breeds, but these are generally sub-classable as wool class, hair class and Lamb (food) variety breeds. Dual-purpose breeds are bred for both wool and meat.
Major wool breeds include Merino, Rambouillet (sheep), Romney sheep, Shetland (sheep), and
Lincoln (sheep). Drysdale and Herdwick (sheep) are bred specifically for
carpet wool.
Breeds of meat sheep include
Beltex (sheep),
Suffolk (sheep), Portland (sheep),
Hampshire (sheep),
Columbia (sheep),
Texel (sheep), and
Montadale.
Breeders of dual-purpose wool class sheep concentrate on fast growth, multiple births, ease of lambing and hardiness. An easy-care sheep is the
Coopworth that has long wool and good lamb meat production qualities. Other dual-use breed are the Corriedale (sheep) and
Shropshire (sheep). Sometimes sheep are used for both purposes equally and cross-breeding is practiced to maximise both outputs. For example,
Merino ewes providing wool may be crossed with Suffolk rams to produce lambs which are robust and suitable for the meat market.
Hair class sheep are the original class of sheep in the world, developed for meat and leather. They are prolific and highly resistant to disease and parasites. Dorpers and Kahtahdins are composite breeds of wool and hair crosses with different degrees of wool/hair mixes within the hair class. True hair sheep such as
St. Croix,
Barbados Blackbelly,
Mouflon, Santa Inez and Royal White shed their protective down fiber to an all hair coat in the Spring/Summer. Hair class sheep are becoming more popular for their no-shear aspects.
Economic importance
{{Agricultural production box|year= 2005|animal= Sheep and Lamb|country1= |amount1=170.9|country2= |amount2=102.7|country3= European Union (15 nation)] (and its derivative products, such as
cheese),
wool, Sheepskin (material) (used for making clothes, footwear, rugs, and other coverings) and lamb (food). Sheep droppings have even been sterilized and mixed with other traditional
pulp materials to make paper. Sheeppoopaper.comIn the 21st century, sheep retain considerable importance in the economies of several countries. After
China, the largest producers of sheep products are in the southern hemisphere: Australia,
New Zealand and the Patagonian regions of
Argentina, Uruguay, and Chile. Sheep play an important role in the economies of a number of smaller countries, such as Wales. In some places, like
Sardinia, sheep-breeding has become the principal and characteristic activity.
In the
United Kingdom, the importance of the wool trade was so significant that in the upper chamber of parliament (the
House of Lords), the Lord Chancellor sits on a bench known as the Woolsack. This is, as its name suggests, a sack of wool and confers the importance of the wool trade to the English economy at the time of its installation many centuries ago.
The economic importance of sheep in much of the United States has declined as it has become, in some cases, economically unviable to ranch sheep for wool. Texas has by far the most sheep of any state, but now has only about one-tenth of the almost 11 million sheep it had in the 1940s.
In the 21st century, in some situations, sheep can provide a return on investment of up to 400% of their cost annually (including reproduction gains). Sheep breeding has played a role in several historic conflicts, such as the Scottish Highland Clearances, the American
range wars, and the English "Enclosure of the commons".
Domestication
Evidence for the domestication of sheep dates to
9th millennium BC in
Iraq.
DNA analysis has shown that domestic sheep are descended from two ancestor species, one of which is the
mouflon. Although the second ancestor has not been identified, both the
urial and argali have been ruled out. The
urial (
O. vignei) is found from northeastern Iran to northwestern India. It has a higher number of
chromosomes (58) than domestic sheep (54) which makes it an unlikely ancestor of the latter, but it interbreeds with the mouflon. The argali sheep (
O. ammon) of inner Asia (Tibet, Himalayas, Altay Mountains, Tien-Shan and
Pamir Mountains) has 56 chromosomes and the Siberian
snow sheep (
Ovis nivicola) has 52 chromosomes.
Evidence of early domesticated sheep has been found in
PPNB Jericho and Zawi Chemi Shanidar. The fleece-bearing sheep are only found since the
Bronze Age. Primitive breeds, like the Scottish
Soay sheep have to be plucked (a process called rooing), instead of sheared, as the kemps are still longer than the soft fleece, or the fleece must be collected from the field after it falls out. The European mouflon (
O. musimon) found on Corsica and Sardinia as well as the Cretan and the extinct Cypriot wild sheep are possibly descended from early domestic sheep that turned feral.
Cuisine
Chefs and diners commonly know sheep meat prepared for food as
Lamb (food) (compare the
French language word for "sheep":
mouton).
Ewes' milk is used in the production of
cheese and yogurt in many upland parts of the world. Well known sheep milk cheeses include the Roquefort (cheese) of France, the brocciu of Corsica, the
Pecorino Romano cheese of Italy and the feta (cheese) cheese of
Greece. See :Category:Sheep's-milk cheeses. Sheep milk contains
lactose, and may trigger
lactose intolerance in humans.
Sheep
testicles - called
animelles or Lamb fries in culinary terms - are considered a delicacy in many parts of the world. They are sometimes confused with
Rocky Mountain oysters which are exclusively the testicles of
boars or
cattles.
Behavior
in the early morning.Some breeds of sheep exhibit a strong flocking behaviour. Flocking behaviour is advantageous to non-predatory animals; the strongest animals fight their way to the center of the flock which offers them great protection from predators. It can be disadvantageous when food sources are limited and sheep are almost as prone to overgrazing a pasture as goats. In
Iceland, where sheep have no natural predators, and grasses grow slowly, none of the various breeds of sheep exhibit a strong flocking behaviour.
Sheep flocking behaviour is so prevalent in some
England breeds that special names apply to the different roles sheep play in a flock. One calls a sheep that roams furthest away from the others an
outlier, this sheep ventures further away from the safety of the flock to graze, due to a larger flight zone or a weakness that prevents it from obtaining enough
Foraging when with the flock, while taking a chance that a
predator, such as a
wolf, will attack it first because of its isolation.
Another sheep, the
bellwether, which never goes first but always follows an outlier, signals to the others that they may follow in safety. When it moves, the others will also move. Traditionally this was a castrated ram (or
wether) with a
bell hung off a string around its neck. The tendency to act as an outlier, bellwether or to fight for the middle of the flock stays with sheep throughout their adulthood; that is unless they have a scary experience which causes them to increase their
flight zone.
According to a spokesperson of the British National Sheep Association, "Sheep are quite intelligent creatures and have more brainpower than people are willing to give them credit for." For example, sheep in Yorkshire,
England found a way to get over cattle grids by rolling on their backs. A study published in
National Geographic (December 8) showed a sheep can remember the faces of fifty other sheep for over two years. If sheep are acting poorly, they are known as a "Goulden in the rough."
Sheep can become
hefted to one particular pasture so they do not roam far from home. Since the outbreak of foot and mouth disease in the
United Kingdom, transplanted sheep have had to be trained to stay in their grazing area.
Sheep are also one of the many animals that can display a preference for
homosexuality and are one of the few in which this occurrence has been systematically studied. It occurs in about eight percent of rams on average. Its occurrence does not seem to be related to dominance or flock hierarchy; rather the rams typical motor pattern for intercourse is merely directed at rams instead of ewes OHSU.
Sheep have horizontal slit shaped pupils. The narrower the pupil, the more accurate the depth perception of peripheral vision is; so narrowing it in one direction would increase depth perception in that plane MadSci Network, posted by Tim Susman, Staff Zoology, University of Minnesota, St. Paul, MN MadSci Network posted by Tim Susman, Staff Zoology, University of Minnesota, St. Paul, MN. Animals like goats and sheep may have evolved horizontal pupils because better vision in the vertical plane may be beneficial in mountainous environments MadSci Network posted by Tim Susman, Staff Zoology, University of Minnesota, St. Paul, MN.
Glossary
This is a glossary of terms that relate to
sheep and
domestic sheep. Note that some terms have localised meanings, and may be used only in one geographical region, or may mean slightly different things in different areas.
- Cryptorchid — a male sheep with no descended testicles, with them both being retained internally.
- Ewe — a female sheep, capable of producing lambs.
- Hoggett (or Hoggatt) — a sheep which by virtue of its age and development is no longer a lamb, but not yet mutton. esp. in relation to meat breeds.
- Lamb — a young sheep, generally unweaned. In many Eastern countries, there is a less strict definition of lamb which may include older hoggetts. Also used to refer specifically to the Lamb (food) of such a sheep.
- Monorchid — a male sheep that has only one descended testicle, with the other being retained internally. They are less fertile but have an increased production of lean meat due to the presence of testosterone.
- Mutton — an older female sheep to be used for meat. Also used to refer specifically to the Lamb_(food) of such a sheep. May refer to goat meat in eastern countries. Derived from the French word Mouton (sheep).
- Ram (also called a tup) — an uncastrated male sheep.
- Riggwelter — a sheep that has fallen onto its back and (usually because of the weight of its fleece) is unable to get back up.
- Old-season lamb — a lamb a year old or more.
- Ovine — member of the genus Ovis.
- Slink — a very young lamb.
- Sucker — an unweaned lamb.
- Teg — a sheep in its second year.
- Wether — a castrated male sheep.
See also
References
External links
-
-
- Genetic origins of domestic sheep
- Dutch Texel Sheep
- SHEEP 101 .info
- A Glossary of sheep terms (National Sheep Association)
- The Domestic Sheep by Henry Stewart (1898), "Natural History" and "Anatomy."
- Information on the heradic sheep of the Merseyside area.
- German webside about suffolk sheep.
Further reading
- Juliet Clutton-Brock. A natural history of domesticated animals (London 1987).
- Journal of Heredity. 1998 Mar-Apr;89(2):113-20. Analysis of mitochondrial DNA indicates that domestic sheep are derived from two different ancestral maternal sources: no evidence for contributions from urial and argali sheep. Hiendleder S, Mainz K, Plante Y, Lewalski H.
- G.J. Syme & L.A. Syme. Social Structure in Farm Animals (Elsevier, Amsterdam, 1979).
{{taxobox| color = pink| name = Domestic sheep| status = DOM| image = Flock of sheep.jpg| image_width = 250px| image_caption = A flock of sheep| regnum =
Animalia]| classis =
Mammalia]| familia =
Bovidae]| genus =
Ovis],
1758-->
The
domestic sheep (
Ovis aries), the most common species of the
sheep genus (
Ovis), is a woolly ruminant quadruped. It is probably descended from the wild
mouflon of
South Asia and Southwest Asia. Female sheep are referred to as
ewes, intact males as
rams, Castration males as
wethers, yearlings as
hoggets, and younger sheep as
lambs. In sheep
husbandry, a group of sheep is called a
herd,
flock or
mob.
Sheep husbandry has a vast Domestic sheep#Glossary, which varies frequently with region.
The sheep is related to the
goat, both belonging to the goat antelope subfamily
Caprinae, itself part of the family
Bovidae. However, the genes of sheep and goats differ so greatly that cross-species hybrids rarely occur, and are always infertile. A hybrid of a ewe and a buck is called a
sheep-goat hybrid, not to be confused with a geep, which is a
Chimera (genetics).
Cultural significance
religious texts since time immemorial. Here, sheep are seen in front of Jerusalem's Damascus Gate.Sheep have had associations with many cultures, especially in the
Mediterranean area and
Great Britain, where they form the most common type of
livestock in pastoralism. Selective breeding of sheep has frequently occurred.
A wide
symbology relates to sheep in ancient art, traditions and culture. In
Egyptian mythology the ram was the symbol of
Heryshaf.
Judaism uses many sheep references including the
Passover lamb. Christianity uses sheep-related images, such as:
Christ as the good shepherd, or as the Sacrificial lamb Lamb of God (Agnus Dei), the
bishop's
Pastoral, the lion lying down with the lamb (a reference to all of creation being at peace, without suffering, predation or otherwise). Easter celebrations in
Greece and Romania traditionally feature a meal of Paschal lamb. Sheep also have considerable importance in
Arab culture;
Eid ul-Adha is a major annual festival in
Islam in which a sheep is sacrificed.
.Herding sheep plays an important historico-symbolic part in the
Jewish and Christianity faiths, since Abraham, Isaac, Jacob, Moses, and
King David all worked as shepherds.
The ram is the first sign of the Western
zodiac, in which it is known as
Aries (astrology). The sheep (or
goat) also forms one of the animals associated with the 12-year cycle of in the
Chinese zodiac, related to the Chinese calendar. Chinese tradition associates each animal with certain personality traits. See: Sheep (Zodiac).
The raising of sheep for wool and meat became a major industry in colonial
Australia and
New Zealand and remains significant. As a result, sheep and sheep shearing have become an important part of the folklore and cultural tradition of these two countries. In
New Zealand, sheep outnumber the human population 12 to 1.
Sheep are often associated with obedience due to the widespread perception that they lack intelligence (trait) and their undoubted
herd mentality, hence the pejorative connotation of the adjective 'ovine'. In
George Orwell's satirical novel
Animal Farm, sheep are used to represent the ignorant and uneducated masses of revolutionary
Russia. The sheep are unable to be taught the subtleties of revolutionary ideology and can only be taught repetitive slogans such as "Four legs good, two legs bad" which they bleat in unison at rallies.
The rock group
Pink Floyd wrote a song using Sheep (song) as a symbol for ordinary people, that is, everyone who isn't a pig or dog. People who accept overbearing governments have been pejoratively referred to as "sheeple".
In contemporary events, controversy has raged over a scientific study at the Oregon Health and Science University which, because of the unedited printing of a press-release by PETA in a British newspaper, has been accused of attempting to find a way to breed out the minority trait which causes some rams to prefer
Homosexuality relations. Further investigation revealed it only attempts to study the genetics and circumstances which produce the phenomenon and not "cure" it. Seattle Times
Breeds
ram demonstrates the wide variance in sheep traits that belies the prototypical appearance of the animal.There are many
List of sheep breeds, but these are generally sub-classable as
wool class, hair class and Lamb (food) variety breeds. Dual-purpose breeds are bred for both wool and meat.
Major wool breeds include
Merino, Rambouillet (sheep),
Romney sheep, Shetland (sheep), and
Lincoln (sheep). Drysdale and Herdwick (sheep) are bred specifically for carpet wool.
Breeds of meat sheep include Beltex (sheep), Suffolk (sheep),
Portland (sheep), Hampshire (sheep),
Columbia (sheep), Texel (sheep), and Montadale.
Breeders of dual-purpose wool class sheep concentrate on fast growth, multiple births, ease of lambing and hardiness. An easy-care sheep is the
Coopworth that has long wool and good lamb meat production qualities. Other dual-use breed are the Corriedale (sheep) and
Shropshire (sheep). Sometimes sheep are used for both purposes equally and cross-breeding is practiced to maximise both outputs. For example,
Merino ewes providing wool may be crossed with Suffolk rams to produce lambs which are robust and suitable for the meat market.
Hair class sheep are the original class of sheep in the world, developed for meat and leather. They are prolific and highly resistant to disease and parasites. Dorpers and Kahtahdins are composite breeds of wool and hair crosses with different degrees of wool/hair mixes within the hair class. True hair sheep such as
St. Croix, Barbados Blackbelly, Mouflon,
Santa Inez and
Royal White shed their protective down fiber to an all hair coat in the Spring/Summer. Hair class sheep are becoming more popular for their no-shear aspects.
Economic importance
{{Agricultural production box|year= 2005|animal= Sheep and Lamb|country1= |amount1=170.9|country2= |amount2=102.7|country3=
European Union (15 nation)] (and its derivative products, such as
cheese),
wool,
Sheepskin (material) (used for making clothes, footwear, rugs, and other coverings) and
lamb (food). Sheep droppings have even been sterilized and mixed with other traditional pulp materials to make paper. Sheeppoopaper.comIn the 21st century, sheep retain considerable importance in the economies of several countries. After China, the largest producers of sheep products are in the southern hemisphere:
Australia,
New Zealand and the Patagonian regions of
Argentina, Uruguay, and
Chile. Sheep play an important role in the economies of a number of smaller countries, such as
Wales. In some places, like Sardinia, sheep-breeding has become the principal and characteristic activity.
In the United Kingdom, the importance of the wool trade was so significant that in the upper chamber of parliament (the
House of Lords), the Lord Chancellor sits on a bench known as the
Woolsack. This is, as its name suggests, a sack of wool and confers the importance of the wool trade to the English economy at the time of its installation many centuries ago.
The economic importance of sheep in much of the United States has declined as it has become, in some cases, economically unviable to ranch sheep for wool.
Texas has by far the most sheep of any state, but now has only about one-tenth of the almost 11 million sheep it had in the 1940s.
In the 21st century, in some situations, sheep can provide a return on investment of up to 400% of their cost annually (including reproduction gains). Sheep breeding has played a role in several historic conflicts, such as the Scottish
Highland Clearances, the American range wars, and the English "
Enclosure of the commons".
Domestication
Evidence for the domestication of sheep dates to 9th millennium BC in Iraq.
DNA analysis has shown that domestic sheep are descended from two ancestor species, one of which is the
mouflon. Although the second ancestor has not been identified, both the
urial and
argali have been ruled out. The urial (
O. vignei) is found from northeastern Iran to northwestern India. It has a higher number of chromosomes (58) than domestic sheep (54) which makes it an unlikely ancestor of the latter, but it interbreeds with the mouflon. The argali sheep (
O. ammon) of inner Asia (Tibet, Himalayas, Altay Mountains,
Tien-Shan and
Pamir Mountains) has 56 chromosomes and the Siberian
snow sheep (
Ovis nivicola) has 52 chromosomes.
Evidence of early domesticated sheep has been found in PPNB
Jericho and Zawi Chemi Shanidar. The fleece-bearing sheep are only found since the
Bronze Age. Primitive breeds, like the Scottish Soay sheep have to be plucked (a process called rooing), instead of sheared, as the kemps are still longer than the soft fleece, or the fleece must be collected from the field after it falls out. The European mouflon (
O. musimon) found on Corsica and Sardinia as well as the Cretan and the extinct Cypriot wild sheep are possibly descended from early domestic sheep that turned feral.
Cuisine
Chefs and diners commonly know sheep
meat prepared for food as
Lamb (food) (compare the French language word for "sheep":
mouton).
Ewes' milk is used in the production of cheese and yogurt in many upland parts of the world. Well known sheep milk cheeses include the Roquefort (cheese) of France, the
brocciu of
Corsica, the
Pecorino Romano cheese of Italy and the feta (cheese) cheese of
Greece. See :Category:Sheep's-milk cheeses. Sheep milk contains
lactose, and may trigger
lactose intolerance in humans.
Sheep
testicles - called animelles or Lamb fries in culinary terms - are considered a delicacy in many parts of the world. They are sometimes confused with Rocky Mountain oysters which are exclusively the testicles of boars or
cattles.
Behavior
in the early morning.Some breeds of sheep exhibit a strong
flocking behaviour. Flocking behaviour is advantageous to non-predatory animals; the strongest animals fight their way to the center of the flock which offers them great protection from predators. It can be disadvantageous when food sources are limited and sheep are almost as prone to overgrazing a pasture as goats. In
Iceland, where sheep have no natural predators, and grasses grow slowly, none of the various breeds of sheep exhibit a strong flocking behaviour.
Sheep flocking behaviour is so prevalent in some
England breeds that special names apply to the different roles sheep play in a flock. One calls a sheep that roams furthest away from the others an
outlier, this sheep ventures further away from the safety of the flock to graze, due to a larger flight zone or a weakness that prevents it from obtaining enough Foraging when with the flock, while taking a chance that a predator, such as a
wolf, will attack it first because of its isolation.
Another sheep, the
bellwether, which never goes first but always follows an outlier, signals to the others that they may follow in safety. When it moves, the others will also move. Traditionally this was a castrated ram (or
wether) with a
bell hung off a string around its neck. The tendency to act as an outlier, bellwether or to fight for the middle of the flock stays with sheep throughout their adulthood; that is unless they have a scary experience which causes them to increase their
flight zone.
According to a spokesperson of the British National Sheep Association, "Sheep are quite intelligent creatures and have more brainpower than people are willing to give them credit for." For example, sheep in
Yorkshire, England found a way to get over
cattle grids by rolling on their backs. A study published in
National Geographic (December 8) showed a sheep can remember the faces of fifty other sheep for over two years. If sheep are acting poorly, they are known as a "Goulden in the rough."
Sheep can become
hefted to one particular pasture so they do not roam far from home. Since the outbreak of foot and mouth disease in the
United Kingdom, transplanted sheep have had to be trained to stay in their grazing area.
Sheep are also one of the many animals that can display a preference for homosexuality and are one of the few in which this occurrence has been systematically studied. It occurs in about eight percent of rams on average. Its occurrence does not seem to be related to dominance or flock hierarchy; rather the rams typical motor pattern for intercourse is merely directed at rams instead of ewes OHSU.
Sheep have horizontal slit shaped pupils. The narrower the pupil, the more accurate the depth perception of peripheral vision is; so narrowing it in one direction would increase depth perception in that plane MadSci Network, posted by Tim Susman, Staff Zoology, University of Minnesota, St. Paul, MN MadSci Network posted by Tim Susman, Staff Zoology, University of Minnesota, St. Paul, MN. Animals like goats and sheep may have evolved horizontal pupils because better vision in the vertical plane may be beneficial in mountainous environments MadSci Network posted by Tim Susman, Staff Zoology, University of Minnesota, St. Paul, MN.
Glossary
This is a glossary of terms that relate to
sheep and
domestic sheep. Note that some terms have localised meanings, and may be used only in one geographical region, or may mean slightly different things in different areas.
- Cryptorchid — a male sheep with no descended testicles, with them both being retained internally.
- Ewe — a female sheep, capable of producing lambs.
- Hoggett (or Hoggatt) — a sheep which by virtue of its age and development is no longer a lamb, but not yet mutton. esp. in relation to meat breeds.
- Lamb — a young sheep, generally unweaned. In many Eastern countries, there is a less strict definition of lamb which may include older hoggetts. Also used to refer specifically to the Lamb (food) of such a sheep.
- Monorchid — a male sheep that has only one descended testicle, with the other being retained internally. They are less fertile but have an increased production of lean meat due to the presence of testosterone.
- Mutton — an older female sheep to be used for meat. Also used to refer specifically to the Lamb_(food) of such a sheep. May refer to goat meat in eastern countries. Derived from the French word Mouton (sheep).
- Ram (also called a tup) — an uncastrated male sheep.
- Riggwelter — a sheep that has fallen onto its back and (usually because of the weight of its fleece) is unable to get back up.
- Old-season lamb — a lamb a year old or more.
- Ovine — member of the genus Ovis.
- Slink — a very young lamb.
- Sucker — an unweaned lamb.
- Teg — a sheep in its second year.
- Wether — a castrated male sheep.
See also
References
External links
-
-
- Genetic origins of domestic sheep
- Dutch Texel Sheep
- SHEEP 101 .info
- A Glossary of sheep terms (National Sheep Association)
- The Domestic Sheep by Henry Stewart (1898), "Natural History" and "Anatomy."
- Information on the heradic sheep of the Merseyside area.
- German webside about suffolk sheep.
Further reading
- Juliet Clutton-Brock. A natural history of domesticated animals (London 1987).
- Journal of Heredity. 1998 Mar-Apr;89(2):113-20. Analysis of mitochondrial DNA indicates that domestic sheep are derived from two different ancestral maternal sources: no evidence for contributions from urial and argali sheep. Hiendleder S, Mainz K, Plante Y, Lewalski H.
- G.J. Syme & L.A. Syme. Social Structure in Farm Animals (Elsevier, Amsterdam, 1979).
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