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Nigerian Dwarf (goat)
The Nigerian Dwarf is an American breed of dwarf goat. Like the American Pygmy Goat, it derives from the West African Dwarf group of breeds of West Africa. History Between about 1930 and 1960 a variety of small goats of the West African Dwarf group of breeds were imported from Africa to the United States to be exhibited in zoos. The Nigerian Dwarf, like the American Pygmy Goat, derives from these, but does not resemble the stocky West African Dwarf in conformation – it has been bred to have the appearance of a miniature dairy goat. It was at first reared as a show breed and companion animal; selection was for appearance and for docility. It was later found to be suitable for small-scale dairy production, and some breeding was directed towards dairy qualities. A herd-book was established in 1980. Numbers grew rapidly; by 2002 there were almost 7000 head registered. The breed was recognized by the American Dairy Goat Association in 2005. The Nigerian Dwarf was former ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Animal Names
In the English language, animals have different names depending on whether they are male, female, young, domesticated, or in groups. The best-known source of many English words used for collective groupings of animals is '' The Book of Saint Albans'', an essay on hunting published in 1486 and attributed to Juliana Berners. Most terms used here may be found in common dictionaries and general information web sites. Generic terms The terms in this table apply to many or all taxons in a particular biological family, class, or clade. Terms by species or taxon Usage of collective nouns ''Merriam-Webster'' writes that most terms of venery fell out of use in the 16th century, including a "murder" for crows. It goes on to say that some of the terms in '' The Book of Saint Albans'' were "rather fanciful", explaining that the book extended collective nouns to people of specific professions, such as a "poverty" of pipers. It concludes that for lexicographers, many of these don't sa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nigora
The Nigora is an American breed of small or medium-sized dual-purpose goat, raised both for its milk and for its fiber. It is the result of cross-breeding Nigerian Dwarf bucks with does of mohair breeds such as the Angora. History The Nigora is of recent creation: breeding started in 1994. A breed association Breed clubs are associations or clubs with activities centered on a single, specific breed of a particular species of domesticated animal. The purpose of the association will vary with the species of animal and the goals and needs of the members o ..., the American Nigora Goat Breeders Association, was formed in 2007. Another association, the Nigora Goat Breeders Society, was active in 2014. Fiber As with the Pygora breed, the fiber is classified into three types, A, B and C, depending on the length and type of the fibers. Type A is Angora-type mohair, long and lustrous; type B is "cashgora", which combines mohair with cashmere-type undercoat and is of medium l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lactation
Lactation describes the secretion of milk from the mammary glands and the period of time that a mother lactates to feed her young. The process naturally occurs with all sexually mature female mammals, although it may predate mammals. The process of feeding milk in all animals (including humans) is called ''nursing'', and in humans it is also called ''breastfeeding''. Newborn infants often produce some milk from their own breast tissue, known colloquially as witch's milk. In most species, lactation is a sign that the female has been pregnant at some point in her life, although it can happen without pregnancy. Nearly every species of mammal has nipples; except for monotremes, egg-laying mammals, which instead release milk through ducts in the abdomen. In only one species of mammal, the Dayak fruit bat from Southeast Asia, is milk production a normal male function. ''Galactopoiesis'' is the maintenance of milk production. This stage requires prolactin. Oxytocin is critical for t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Goat's Milk
Goat milk is the milk of domestic goats. Goats produce about 2% of the world's total annual milk supply. Some goats are bred specifically for milk. Goat milk naturally has small, well-emulsified fat globules, which means the cream will stay in suspension for a longer period of time than cow's milk; therefore, it does not need to be homogenized. Eventually, the cream will rise to the top over a period of a few days. If the milk is to be used to make cheese, homogenization is not recommended, as this changes the structure of the milk, affecting the culture's ability to coagulate the milk and the final quality and yield of cheese. Dairy goats in their prime (generally around the third or fourth lactation cycle) average——of milk production daily—roughly —during a ten-month lactation, producing more just after freshening and gradually dropping in production toward the end of their lactation. The milk generally averages 3.5% butterfat. Сheese Goat milk is commonly proces ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dairy
A dairy is a business enterprise established for the harvesting or processing (or both) of animal milk – mostly from cows or buffaloes, but also from goats, sheep, horses, or camels – for human consumption. A dairy is typically located on a dedicated dairy farm and milk or in a section of a multi-purpose farm (mixed farm) that is concerned with the harvesting of milk. As an attributive, the word ''dairy'' refers to milk-based products, derivatives and processes, and the animals and workers involved in their production: for example dairy cattle, dairy goat. A dairy farm produces milk and a dairy factory processes it into a variety of dairy products. These establishments constitute the global dairy industry, part of the food industry. Terminology Terminology differs between countries. In the United States, for example, an entire dairy farm is commonly called a "dairy". The building or farm area where milk is harvested from the cow is often called a "milking parlor" or "parl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Life Expectancy
Life expectancy is a statistical measure of the average time an organism is expected to live, based on the year of its birth, current age, and other demographic factors like sex. The most commonly used measure is life expectancy at birth (LEB), which can be defined in two ways. ''Cohort'' LEB is the mean length of life of a birth cohort (all individuals born in a given year) and can be computed only for cohorts born so long ago that all their members have died. ''Period'' LEB is the mean length of life of a hypothetical cohort assumed to be exposed, from birth through death, to the mortality rates observed at a given year. National LEB figures reported by national agencies and international organizations for human populations are estimates of ''period'' LEB. In the Bronze Age and the Iron Age, human LEB was 26 years; in 2010, world LEB was 67.2 years. In recent years, LEB in Eswatini (formerly Swaziland) is 49, while LEB in Japan is 83. The combination of high infant mor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Twinning Rate
Twinning (making a twin of) may refer to: * In biology and agriculture, producing two offspring (i.e., twins) at a time, or having a tendency to do so; * Twin towns and sister cities, towns and cities involved in town twinning * Twinning institutional building tool * eTwinning, an EU collaboration project in which two schools in different locations are paired and communicate using the internet * Afri Twin, an exchange partnership between schools in the United Kingdom and South Africa * Twinning (roads), construction of one road next to another * In crystallography, crystal twinning refers to intergrown crystal forms that display a twin boundary * In film, special effects that multiply the presence of the same actor or actress on screen * In animation, twinning refers to when two parts on opposite sides of a character's body move the same way * A type of transnational education International education refers to a dynamic concept that involves a journey or movement of people, mi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gestation Period
In mammals, pregnancy is the period of reproduction during which a female carries one or more live offspring from implantation in the uterus through gestation. It begins when a fertilized zygote implants in the female's uterus, and ends once it leaves the uterus. Fertilization and implantation During copulation, the male inseminates the female. The spermatozoon fertilizes an ovum or various ova in the uterus or fallopian tubes, and this results in one or multiple zygotes. Sometimes, a zygote can be created by humans outside of the animal's body in the artificial process of in-vitro fertilization. After fertilization, the newly formed zygote then begins to divide through mitosis, forming an embryo, which implants in the female's endometrium. At this time, the embryo usually consists of 50 cells. Development After implantation A blastocele is a small cavity on the center of the embryo, and the developing embryonary cells will grow around it. Then, a flat layer cell forms on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Livestock Breeding
Animal husbandry is the branch of agriculture concerned with animals that are raised for meat, fibre, milk, or other products. It includes day-to-day care, selective breeding, and the raising of livestock. Husbandry has a long history, starting with the Neolithic Revolution when animals were first domesticated, from around 13,000 BC onwards, predating farming of the first crops. By the time of early civilisations such as ancient Egypt, cattle, sheep, goats, and pigs were being raised on farms. Major changes took place in the Columbian exchange, when Old World livestock were brought to the New World, and then in the British Agricultural Revolution of the 18th century, when livestock breeds like the English Longhorn, Dishley Longhorn cattle and Lincoln (sheep), Lincoln Longwool sheep were rapidly improved by agriculturalists, such as Robert Bakewell (agriculturalist), Robert Bakewell, to yield more meat, milk, and wool. A wide range of other species, such as horse, water buffal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Precocial
In biology, altricial species are those in which the young are underdeveloped at the time of birth, but with the aid of their parents mature after birth. Precocial species are those in which the young are relatively mature and mobile from the moment of birth or hatching. Precocial species are normally nidifugous, meaning that they leave the nest shortly after birth or hatching. These categories form a continuum, without distinct gaps between them. Altriciality Etymology The word is derived from the Latin root ''alere'', meaning "to nurse, to rear, or to nourish" and indicates the need for young to be fed and taken care of for a long duration. By contrast, species whose young are immediately or quickly mobile are called ''precocial''. Precociality Etymology The word "precocial" is derived from the same root as ''precocious'', implying early maturity in both cases. Superprecociality Extremely precocial species are called "superprecocial". Examples are the megapode birds, which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morphology (biology)
Morphology is a branch of biology dealing with the study of the form and structure of organisms and their specific structural features. This includes aspects of the outward appearance (shape, structure, colour, pattern, size), i.e. external morphology (or eidonomy), as well as the form and structure of the internal parts like bones and organs, i.e. internal morphology (or anatomy). This is in contrast to physiology, which deals primarily with function. Morphology is a branch of life science dealing with the study of gross structure of an organism or taxon and its component parts. History The etymology of the word "morphology" is from the Ancient Greek (), meaning "form", and (), meaning "word, study, research". While the concept of form in biology, opposed to function, dates back to Aristotle (see Aristotle's biology), the field of morphology was developed by Johann Wolfgang von Goethe (1790) and independently by the German anatomist and physiologist Karl Friedrich Burdach ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magpie Ducks 117
Magpies are birds of the Corvidae family. Like other members of their family, they are widely considered to be intelligent creatures. The Eurasian magpie, for instance, is thought to rank among the world's most intelligent creatures, and is one of the few non-mammal species able to recognize itself in a mirror test. They are particularly well known for their songs and were once popular as cagebirds. In addition to other members of the genus '' Pica'', corvids considered as magpies are in the genera '' Cissa'', ''Urocissa'', and ''Cyanopica''. Magpies of the genus ''Pica'' are generally found in temperate regions of Europe, Asia, and western North America, with populations also present in Tibet and high-elevation areas of Kashmir. Magpies of the genus ''Cyanopica'' are found in East Asia and the Iberian Peninsula. The birds called magpies in Australia are, however, not related to the magpies in the rest of the world. Name References dating back to Old English call the bird a "p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
