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Swedish Friesian
The Swedish Friesian, sv, 'Svensk Låglandsboskap', often abbreviated to SLB, is a Swedish breed of dairy cattle. It was established in about 1870 from imports of cattle of Dutch Friesian or German Black Pied type. From about 1970 it has been systematically cross-bred with the American Holstein-Friesian breed, to the point that the original Swedish type may be extinct. The name Swedish Holstein may also be used.It is a type of Swedish cattle breed. History The Swedish Friesian or Svensk Låglandsboskap originated in about 1870 with imports of black-and-white pied dairy cattle of and German Black Pied type. A herd-book was established in 1880. The Svensk Låglandsboskap became the most numerous dairy breed in southern Sweden. Selective breeding in the 1940s and 1950s led to stock shorter in the leg and broader in the body than the original types. During the 1960s the breed spread through much of Sweden. In 2001 the Svensk Låglandsboskap constituted 47% of the national dairy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pied
A piebald or pied animal is one that has a pattern of unpigmented spots (white) on a pigmented background of hair, feathers or scales. Thus a piebald black and white dog is a black dog with white spots. The animal's skin under the white background is not pigmented. Location of the unpigmented spots is dependent on the migration of melanoblasts (primordial pigment cells) from the neural crest to paired bilateral locations in the skin of the early embryo. The resulting pattern appears symmetrical only if melanoblasts migrate to both locations of a pair and proliferate to the same degree in both locations. The appearance of symmetry can be obliterated if the proliferation of the melanocytes (pigment cells) within the developing spots is so great that the sizes of the spots increase to the point that some of the spots merge, leaving only small areas of the white background among the spots and at the tips of the extremities. Animals with this pattern may include birds, cats, cattl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Cattle Breeds
List of cattle breeds — Over 1000 breeds of cattle are recognized worldwide, some of which adapted to the local climate, others which were bred by humans for specialized uses. Cattle breeds fall into two main types, which are regarded as either two closely related species, or two subspecies of one species. ''Bos indicus'' (or ''Bos taurus indicus'') cattle, commonly called zebu, are adapted to hot climates and originated in the tropical parts of the world such as India, Sub-saharan Africa, China, and Southeast Asia. ''Bos taurus'' (or '' Bos taurus taurus''), typically referred to as "taurine" cattle, are generally adapted to cooler climates and include almost all cattle breeds originating from Europe and northern Asia. In some parts of the world further species of cattle are found (both as wild and domesticated animals), and some of these are related so closely to taurine and indicus cattle that interspecies hybrids have been bred. Examples include the Dwarf Lulu cattle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dairy Cattle
Dairy cattle (also called dairy cows) are cattle bred for the ability to produce large quantities of milk, from which dairy products are made. Dairy cattle generally are of the species ''Bos taurus''. Historically, little distinction was made between dairy cattle and beef cattle, with the same stock often being used for both meat and milk production. Today, the bovine industry is more specialized and most dairy cattle have been bred to produce large volumes of milk. Management Dairy cows may be found either in herds or dairy farms, where dairy farmers own, manage, care for, and collect milk from them, or on commercial farms. Herd sizes vary around the world depending on landholding culture and social structure. The United States has an estimated 9 million cows in around 75,000 dairy herds, with an average herd size of 120 cows. The number of small herds is falling rapidly with the 3,100 herds with over 500 cows producing 51% of U.S. milk in 2007. The United Kingdom dairy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dutch Friesian
Dutch commonly refers to: * Something of, from, or related to the Netherlands * Dutch people () * Dutch language () Dutch may also refer to: Places * Dutch, West Virginia, a community in the United States * Pennsylvania Dutch Country People Ethnic groups * Germanic peoples, the original meaning of the term ''Dutch'' in English ** Pennsylvania Dutch, a group of early Germanic immigrants to Pennsylvania * Dutch people, the Germanic group native to the Netherlands Specific people * Dutch (nickname), a list of people * Johnny Dutch (born 1989), American hurdler * Dutch Schultz (1902–1935), American mobster born Arthur Simon Flegenheimer * Dutch Mantel, ring name of American retired professional wrestler Wayne Maurice Keown (born 1949) * Dutch Savage, ring name of professional wrestler and promoter Frank Stewart (1935–2013) Arts, entertainment, and media Fictional characters * Dutch (''Black Lagoon''), an African-American character from the Japanese manga and anime ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
German Black Pied
German Black Pied cattle are a breed of dairy cattle that originated in the North Sea coast regions of northern Germany and the Netherlands. Until the 18th century, cattle of diverse colours were bred in these regions. After 1750, the black pied coloured type was dominant, but there are still also unicoloured red and red pied cattle. In 1878 in East Frisia (Germany), the first breeding company was founded. East Frisia and East Prussia (today Russia, Lithuania, and Poland) were the most important breeding regions of the breed. Later it extended over the whole of northern and central Germany. Since 1958 in West Germany the breed was crossed with Holstein Friesian cattle. Since the 1960s these crossed animals have been dominant, and so the German black-and-white cattle breed was born. In East Germany the breed was crossed with Jersey cattle and Holstein Friesian cattle to create the German Black Pied Dairy cattle breed. The original breeding type was conserved in East Germany a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holstein-Friesian
Holstein Friesians (often shortened to Holsteins in North America, while the term Friesians is often used in the UK and Ireland) are a breed of dairy cattle that originated in the Dutch provinces of North Holland and Friesland, and Schleswig-Holstein in Northern Germany. They are known as the world's highest-producing dairy animals. Dutch and German breeders developed the breed with the goal of producing animals that could most efficiently use grass, the area's most abundant resource, as their food. Over the centuries, the result was a high-producing, black-and-white dairy cow. The Holstein-Friesian is the most widespread cattle breed in the world; it is found in more than 150 countries. With the growth of the New World, a demand for milk developed in North America and South America, and dairy breeders in those regions at first imported their livestock from the Netherlands. However, after about 8,800 Friesians ( black pied German cows) had been imported, Europe stopped exporting ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Swedish Cattle Breeds
This is a list of the cattle breeds considered in Sweden to be wholly or partly of Swedish origin. Some may have complex or obscure histories, so inclusion here does not necessarily imply that a breed is predominantly or exclusively Swedish. References {{Cattle breeds of Sweden Cattle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herd-book
A breed registry, also known as a herdbook, studbook or register, in animal husbandry and the hobby of animal fancy, is an official list of animals within a specific breed whose parents are known. Animals are usually registered by their breeders while they are young. The terms studbook and register are also used to refer to lists of male animals "standing at stud", that is, those animals actively breeding, as opposed to every known specimen of that breed. Such registries usually issue certificates for each recorded animal, called a pedigree, pedigreed animal documentation, or most commonly, an animal's "papers". Registration papers may consist of a simple certificate or a listing of ancestors in the animal's background, sometimes with a chart showing the lineage. Types of registries There are breed registries and breed clubs for several species of animal, such as dogs, horses, cows and cats. The US ''Association of Zoos and Aquariums'' (AZA) also maintains stud books for captive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Selective Breeding
Selective breeding (also called artificial selection) is the process by which humans use animal breeding and plant breeding to selectively develop particular phenotypic traits (characteristics) by choosing which typically animal or plant males and females will sexually reproduce and have offspring together. Domesticated animals are known as breeds, normally bred by a professional breeder, while domesticated plants are known as varieties, cultigens, cultivars, or breeds. Two purebred animals of different breeds produce a crossbreed, and crossbred plants are called hybrids. Flowers, vegetables and fruit-trees may be bred by amateurs and commercial or non-commercial professionals: major crops are usually the provenance of the professionals. In animal breeding, techniques such as inbreeding, linebreeding, and outcrossing are utilized. In plant breeding, similar methods are used. Charles Darwin discussed how selective breeding had been successful in producing change over time in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swedish Red-and-White
The Swedish Red-and-White, sv, italic=no, Svensk Röd och Vit Boskap, frequently abbreviated to SRB, is a Swedish breed of dairy cattle. It was created in the 1920s by crossing the Swedish Red Pied and Swedish Ayrshire breeds. History The Swedish Red-and-White breed was formed in 1927 or 1928 by merging the populations of the Swedish Red Pied ( sv, , often abbreviated to RSB) and Swedish Ayrshire breeds. The traditional Herrgård, Skåne and Småland breeds had already been merged into the Swedish Red Pied at some time between 1892 and 1928. All four of these constituent breeds are now reported to DAD-IS DAD-IS is the acronym of the worldwide Domestic Animal Diversity Information System of the Food and Agriculture Organization of the United Nations, within the FAO's management of animal genetic resources programme.Domestic Animal Diversity Infor ... as extinct. The Swedish Red-and-White is one of the two principal dairy breeds of Sweden, and in 2001 constituted almo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Semen
Semen, also known as seminal fluid, is an organic bodily fluid created to contain spermatozoa. It is secreted by the gonads (sexual glands) and other sexual organs of male or hermaphroditic animals and can fertilize the female ovum. Semen is produced and originates from the seminal vesicle, which is located in the pelvis. The process that results in the discharge of semen from the urethral orifice is called ejaculation. In humans, seminal fluid contains several components besides spermatozoa: proteolytic and other enzymes as well as fructose are elements of seminal fluid which promote the survival of spermatozoa, and provide a medium through which they can move or "swim". The fluid is designed to be discharged deep into the vagina, so the spermatozoa can pass into the uterus and form a zygote with an egg. Semen is also a form of genetic material. In animals, semen has been collected for cryoconservation. Cryoconservation of animal genetic resources is a practice that call ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alleles
An allele (, ; ; modern formation from Greek ἄλλος ''állos'', "other") is a variation of the same sequence of nucleotides at the same place on a long DNA molecule, as described in leading textbooks on genetics and evolution. ::"The chromosomal or genomic location of a gene or any other genetic element is called a locus (plural: loci) and alternative DNA sequences at a locus are called alleles." The simplest alleles are single nucleotide polymorphisms (SNP). but they can also be insertions and deletions of up to several thousand base pairs. Popular definitions of 'allele' typically refer only to different alleles within genes. For example, the ABO blood grouping is controlled by the ABO gene, which has six common alleles (variants). In population genetics, nearly every living human's phenotype for the ABO gene is some combination of just these six alleles. Most alleles observed result in little or no change in the function of the gene product it codes for. However, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
