|
Żubroń
Żubroń (; ) is a Hybrid (biology), hybrid of domestic cattle and wisent. The wisent ( in Polish) is the European bison; hence, the żubroń is analogous to the American cattalo. The name żubroń was officially chosen from hundreds of proposals sent to the Polish weekly magazine ''Przekrój'' during a contest organised in 1969. History The żubroń was first created by Leopold Walicki in 1847, although the hybrid may also have appeared at an earlier time. After World War I, various scientists considered żubroń a possible replacement for domestic cattle. Żubroń turned out to be more durable and less susceptible to disease. In addition, the animal could be bred on marginal grazing land with no farm infrastructure and with minimal Animal husbandry, husbandry in huge State Agricultural Farm, state agricultural farms (SAFs). Fr ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bovid Hybrid
A bovid hybrid is the Hybrid (biology), hybrid offspring of members of two different species of the bovid family. There are 143 extant species of bovid, and the widespread domestication of several species has led to an interest in hybridisation for the purpose of encouraging traits useful to humans, and to preserve declining populations. Bovid hybrids may occur naturally through undirected interbreeding, traditional pastoral practices, or may be the result of modern interventions, sometimes bringing together species from different parts of the world. ''Bos'' hybrids The following are examples of hybrids including species or sub-species in the ''Bos'' genus. Hybrids between bison and domestic cattle The American bison (''Bison bison'') and European bison (''Bison bonasus'') have been hybridized with domestic cattle (''Bos taurus''). European bison The wisent, or European bison, was originally crossed with cattle in an attempt to reinvigorate the declining wisent popula ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cattle
Cattle (''Bos taurus'') are large, domesticated, bovid ungulates widely kept as livestock. They are prominent modern members of the subfamily Bovinae and the most widespread species of the genus '' Bos''. Mature female cattle are called cows and mature male cattle are bulls. Young female cattle are called heifers, young male cattle are oxen or bullocks, and castrated male cattle are known as steers. Cattle are commonly raised for meat, for dairy products, and for leather. As draft animals, they pull carts and farm implements. Cattle are considered sacred animals within Hinduism, and it is illegal to kill them in some Indian states. Small breeds such as the miniature Zebu are kept as pets. Taurine cattle are widely distributed across Europe and temperate areas of Asia, the Americas, and Australia. Zebus are found mainly in India and tropical areas of Asia, America, and Australia. Sanga cattle are found primarily in sub-Saharan Africa. These types, sometime ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yakalo
The yakalo is a cross of the yak (''Bos grunniens'') and the American bison (''Bison bison'', known as a buffalo in North America). It was produced by hybridisation experiments in the 1920s, when crosses were made between yak bulls and both pure bison cows and bison–cattle hybrid cows. As with many other inter-specific crosses, only female hybrids were found to be fertile ( Haldane's rule). Few of the hybrids survived, and the experiments were discontinued in 1928.Deakin, A., Muir, G. W., Smith, A. G. (1935). "Hybridization of domestic cattle, bison and yak. Report of Wainwright experiment". ''Publication 479, Technical Bulletin 2'', Dominion of Canada, Department of Agriculture, Ottawa; cited in: Weiner, Gerald (2003)''The Yak, Second Edition'' FAO RAP Publication, pp. 18, 338. See also * Beefalo * Dzo * Żubroń Żubroń (; ) is a Hybrid (biology), hybrid of domestic cattle and wisent. The wisent ( in Polish) is the European bison; hence, the żubroń is analogous t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cattalo
Beefalo constitutes a hybrid offspring of domestic cattle (''Bos taurus''), usually a male in managed breeding programs, and the American bison (''Bison bison''), usually a female in managed breeding programs. The breed was created to combine the characteristics of both animals for beef production. Beefalo are primarily cattle in genetics and appearance, with the breed association defining a full Beefalo as one with three-eighths (37.5%) bison genetics, while animals with higher percentages of bison genetics are called bison hybrids. However, genomic analysis has found that the vast majority of Beefalo, even those considered pedigree by the breed association, have no detectable bison ancestry, with no sampled Beefalo having higher than 18% bison ancestry, with most Beefalo consisting of a mixture of taurine cattle and zebu cattle ancestry. History and genomics Accidental crosses were noticed as long ago as 1749 in the Southern states of North America, during British colo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Białowieża National Park
Białowieża National Park () is a national park in Podlaskie Voivodeship, in Eastern Poland adjacent to the border with Belarus. The total area of the park is . It is located southeast of Białystok (Poland). It is known for the protection of the best preserved part of the Białowieża Forest, Europe's last temperate primaeval forest fragment that once allegedly stretched across the European Plain. It is home to the world's largest population of European bison (), the continent's heaviest land animals. The border between the two countries runs through the forest, the Belovezhskaya Pushcha National Park is adjacent on the Belarus side of the border. There is a border crossing for hikers and cyclists within the forest. According to one study, the park brings in tourist revenues of about 72 million zloty per year. The characteristic feature of the park is its biological diversity. Białowieża National Park is the only Polish natural property designated by UNESCO as a World ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Askania Nova
Askania-Nova () is a biosphere reserve located in Kherson Oblast, Ukraine, within the dry Taurida steppe near Oleshky Sands. An active member of the UNESCO Man and the Biosphere Programme, the reserve maintains and conserves native steppe habitat and endemic species while also caring for rare and exotic animal species from around the world. It is also a research institute of the Academy of Agricultural Sciences of Ukraine. The reserve consists of a zoological park, as well as over 33,000 hectares (81,000+ acres) of grassland habitat for herds of ungulate mammals. There are also many botanical (dendrological) gardens, featuring hundreds of plant species, and a vast open territory of virgin steppe. Askania-Nova is listed on the List of World Heritage Sites in Ukraine#Tentative list, Tentative List of World Heritage Sites in Ukraine. History The nature reserve was established in 1898 by Friedrich-Jacob Eduardovych Falz-Fein (1863–1920) around the German colony of Askania-Nov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Infertility
In biology, infertility is the inability of a male and female organism to Sexual reproduction, reproduce. It is usually not the natural state of a healthy organism that has reached sexual maturity, so children who have not undergone puberty, which is the body's start of fertility, reproductive capacity, are excluded. It is also a normal state in women after menopause. In humans, ''infertility'' is defined as the inability to become pregnant after at least one year of unprotected and regular sexual intercourse involving a male and female partner. There are many causes of infertility, including some that Assisted reproductive technology, medical intervention can treat. Estimates from 1997 suggest that worldwide about five percent of all heterosexual couples have an unresolved problem with infertility. Many more couples, however, experience involuntary childlessness for at least one year, with estimates ranging from 12% to 28%. Male infertility is responsible for 20–30% of infert ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parturition
Birth is the act or process of bearing or bringing forth offspring, also referred to in technical contexts as parturition. In mammals, the process is initiated by hormones which cause the muscular walls of the uterus to contract, expelling the fetus at a developmental stage when it is ready to feed and breathe. In some species, the offspring is precocial and can move around almost immediately after birth but in others, it is altricial and completely dependent on parenting. In marsupials, the fetus is born at a very immature stage after a short gestation and develops further in its mother's womb pouch. It is not only mammals that give birth. Some reptiles, amphibians, fish and invertebrates carry their developing young inside them. Some of these are ovoviviparous, with the eggs being hatched inside the mother's body, and others are viviparous, with the embryo developing inside their body, as in the case of mammals. Human childbirth Humans usually produce a single offspri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caesarean Section
Caesarean section, also known as C-section, cesarean, or caesarean delivery, is the Surgery, surgical procedure by which one or more babies are Childbirth, delivered through an incision in the mother's abdomen. It is often performed because vaginal delivery would put the mother or child at risk (of paralysis or even death). Reasons for the operation include, but are not limited to, obstructed labor, twin pregnancy, pre-eclampsia, high blood pressure in the mother, breech birth, shoulder presentation, and problems with the placenta or umbilical cord. A caesarean delivery may be performed based upon the shape of the mother's pelvis or history of a previous C-section. A trial of Vaginal birth after previous C-section, vaginal birth after C-section may be possible. The World Health Organization recommends that caesarean section be performed only when medically necessary. A C-section typically takes 45 minutes to an hour. It may be done with a spinal block, where the woman is awake ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gazeta Wyborcza
(; ''The Electoral Gazette'' in English) is a Polish nationwide daily newspaper based in Warsaw, Poland. It was launched on 8 May 1989 on the basis of the Polish Round Table Agreement and as a press organ of the Solidarity (Polish trade union), trade union "Solidarity" in the election campaign before the Contract Sejm. Initially created to cover Poland's first partially free parliamentary elections, it rapidly grew into a major publication, reaching a circulation of over 500,000 copies at its peak in the 1990s. It is published by Agora (company), Agora, with its original editor-in-chief Adam Michnik, appointed by Lech Wałęsa, is one of Poland's newspaper of record, newspapers of record, covering the gamut of political, international and general news from a Leftism, left-Liberalism, liberal perspective. ''Gazeta Wyborcza'' also publishes thematic supplements addressing topics such as economy, law, education, and health, including ''Duży Format'', ''Co Jest Grane 24'', and ''Wys ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
