Hiển thị các bài đăng có nhãn Sheep. Hiển thị tất cả bài đăng
Hiển thị các bài đăng có nhãn Sheep. Hiển thị tất cả bài đăng

Thứ Ba, 25 tháng 12, 2012

Rambouillet Sheep
Meet the Rambouillet, a large breed of dual-purpose domestic sheep that has quite an interesting history and legacy.

Before the late 18th century, the Merino sheep breed in Spain were under close guard. They were protected by the government and exportation was forbidden... Until 1786 when the government finally granted a special request by the French King, Louis XVI (the kings were cousins). 359 carefully selected sheep were sent to a farm in Rambouillet, near Paris.

Once the sheep made it to France, they were kept under royal control for a few years, but that did not last. They eventually spread elsewhere in Europe and added their genes to other breeds both on that continent and abroad. By the mid-1800s they had made it to America.

The Rambouillet breed is a large one, with rams growing up to 300lbs and ewes measuring around 200lbs. They have a high wool yield, and long wool at that-- greater than 3in. They are also great meat producers, and are incredibly adaptable. Rambouillet are farmed in all kinds of environments and climates, from hot Texas and Mexico to the chillier regions in Canada and the northern U.S.

Status : Doemsticated
Location : France
Size : Weight up to 300lbs (135kg)
Classification : Phylum : Chordata -- Class : Mammalia -- Order : Artiodactyla
Family : Bovidae -- Genus : Ovis -- Species : O. aries

Thứ Hai, 28 tháng 5, 2012

Pseudois nayaur
The Bharal is one of those animals that goes by many different common names. Nabo, Naur, and Himalayan Blue Sheep are all some of the different monikers given to the species. Why so many names? Well, the Bharal lives in Central and East Asia, so different countries with different languages refer to the animal in different ways.

Bharal live in the Himalaya Mountains, as well as in other mountainous regions of China. They can be found at altitudes of between 10,000 and 18,000ft. They graze on the mountain slopes, and their grey coats give them excellent camouflage against predators. If they feel threatened, the Bharal stand perfectly still, blending in with the rocks. If that defensive tactic doesn't work, they can scamper up the cliffs with their sure-footed hooves before trying to blend in again. Of course, they can't always escape from predators. They make up a huge portion of the Snow Leopards' diet, and it is estimated that the Leopards consume between 11% and 24% of the Bharal population every year.

The rutting season lasts from November to January, and during that time males will chase and fight each other for the right to mate with the females. The calves are born 5-6 months later. Both male and female Bharal have horns, but those of the male larger.

It is believed that the Bharal are common in their range, which is why they are listed as being of Least Concern. It is, however, difficult to monitor their population due to their remote habitat and high elevation lifestyle. They do occur in several National Parks.

IUCN Status : Least Concern
Location : North America
Size : Height up to 3ft (90cm)
Classification : Phylum : Chordata -- Class : Mammalia -- Order : Artiodactyla
Family : Bovidae -- Genus : Pseudois -- Species : P. nayaur

Thứ Sáu, 11 tháng 5, 2012

Altay Sheep Ewe
When we think of sheep, we often imagine domesticated animals that are kept and bred for their wool, not for their meat. Such is not the case for today's breed, which was developed in the dry, cold, mountainous regions of China not for their wool, but for both its meat and fat. (They are sheared, but wool is a secondary purpose.)

Altay Sheep belong to the "fat-rumped carpet wool" type. And that pretty much means exactly what it sounds like. They have dense, carpet-like wool and exceptionally fatty rumps, which is great for the sheep and for their herders, as they both use those fat stores to survive. The sheep use the fat reserves to live during the harsh, vegetation sparse winter months, and the herders use that same fat for fuel.

As you might guess, the breed is very hardy and adaptable, and is able to survive well in the rough conditions that it was bred into. They even typically give birth to just one lamb at a time, which suits them best in conditions that only allow them to eat for a few months of the year!

Status : Domesticated
Location : China
Size : Height up to 29in (76cm), Weight up to 175lbs (80kg)
Classification : Phylum : Chordata -- Class : Mammalia -- Order : Artiodactyla
Family : Bovidae -- Genus : Ovis -- Species : O. aries

Thứ Tư, 14 tháng 3, 2012

Merino Sheep
Meet the Merino! This domesticated breed of sheep is known for its fine, high quality wool... but it has a lot of other cool characteristics as well, including a history that takes back over a thousand years, as well as a strong presence in the study of livestock genetics.

But first, let's go over some basic facts. Merino sheep are bred almost exclusively for their wool, and that wool is considered to be the finest in the world. It is so desirable that it is actually the wool that all other wool is compared to, as far as grading goes! The breed is also quite hardy and adapts very well to different climates and habitats. For example, they originated in Spain and North Africa, but are now being bred all over the world, including in Australia, Germany, and New England.

The very first Merino ancestors came through North Africa via Asia thanks to the Phonecians. When the Moors entered Spain in the 8th century they brought sheep with them, and by the 12th century the first foundation flocks were in place. These Spanish sheep bred with existing European breeds, and the Merino was the result.

For hundreds of years Spain had a monopoly on these fine quality sheep, and made a large profit off of the wool. Before the 18th century it was against the law to export them, but that all changed when the members of the nobility (including the King) started to send small flocks to other countries and principalities. The Spanish Merinos even became the bases for new breeds, including the popular Rambouillet.

Booroola Merino Ewe with Quadruplets
It was a good thing the Merinos eventually made it out of Spain, because the industry was almost completely obliterated there during the Napoleonic Wars. Since 1810, Australia, the United States, and Germany have been the top countries for the breed. There are now a handful of different strains, including the Peppin, Delaine, and the Booroola.

The Booroola Merino has been studied at a genetic level because they posses a gene called Booroola FecB.   (Named for the Australian ranch that it was discovered on back in the 1950s) This gene has allowed the strain to be one of the most prolifically breeding sheep strains in the world. While most sheep have one or maybe two lambs at a time, Booroola Merinos often have triplets or even quadruplets. Some have even have sextuplets! Introducing Merinos with the FecB gene can substantially increase birthrates without needing to introduce traits from other breeds that have high births, but less desirable wool.

Status : Domesticated
Location : Originated in Spain
Size : Varies, but males can weigh up to 130lbs (59kg)
Classification : Phylum : Chordata -- Class : Mammalia -- Order : Artiodactyla
Family : Bovidae -- Genus : Ovis -- Species : O. aries