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Flight Zone
The flight zone of an animal is the area surrounding an animal that if encroached upon by a potential predator or threat, including humans, will cause alarm and escape behavior. The flight zone is determined by the animal's flight distance, sometimes called flight initiation distance (FID) which extends horizontally from the animal and sometimes vertically. It may also be termed escape distance, alert distance, flush distance, and escape flight distance. Swiss zoologist Heini Hediger distinguished between ''flight distance'' (run boundary), ''critical distance'' (attack boundary), ''personal distance'' (distance separating members of non-contact species, as a pair of swans), and ''social distance'' (intraspecies communication distance). Flight distance can be used as a measure of the willingness of an animal to take risks. Escape theory predicts that the probability of fleeing and flight distance increase as predation risk increases and decrease as escape cost increases. Fligh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flight Initiation Distance Buffers
Flight or flying is the motion of an object through an atmosphere, or through the vacuum of space, without contacting any planetary surface. This can be achieved by generating aerodynamic lift When a fluid flows around an object, the fluid exerts a force on the object. Lift is the component of this force that is perpendicular to the oncoming flow direction. It contrasts with the drag force, which is the component of the force paral ... associated with gliding flight, gliding or air propulsion, propulsive thrust, aerostatically using buoyancy, or by ballistics, ballistic movement. Many things can fly, from Flying and gliding animals, animal aviators such as birds, bats and insects, to natural gliders/parachuters such as patagium, patagial animals, anemochorous seeds and ballistospores, to human inventions like aircraft (airplanes, helicopters, airships, balloons, etc.) and rockets which may propel spacecraft and spaceplanes. The engineering aspects of flight are the purvi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Human Footprint
The Human Footprint is an ecological footprint map of human influence on the terrestrial systems of the Earth. It was first published in a 2002 article in the journal ''BioScience'' by Eric W. Sanderson, Malanding Jaiteh, Marc A. Levy, Kent H. Redford, Antoinette V. Wannebo, and Gillian Woolmer. A map of human influence became possible with the advent of high-resolution satellite imagery in the 1990s. Method The map is made to a resolution of and is an aggregate of eight factors: major roadways, navigable waterways, railways, crop lands, pasture lands, the built environment, light pollution, and human population density. In order to compare the effect of influence from different factors, the magnitude of influence for each factor was ranked on a scale of 0–10. These eight factors measure four types of data, which are cumulatively used as a measure of human influence: population density, land transformation, accessibility, and electrical power infrastructure. The first Human Fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epinephrine
Adrenaline, also known as epinephrine, is a hormone and medication which is involved in regulating visceral functions (e.g., respiration). It appears as a white microcrystalline granule. Adrenaline is normally produced by the adrenal glands and by a small number of neurons in the medulla oblongata. It plays an essential role in the fight-or-flight response by increasing blood flow to muscles, heart output by acting on the SA node, pupil dilation response, and blood sugar level. It does this by binding to alpha and beta receptors. It is found in many animals, including humans, and some single-celled organisms. It has also been isolated from the plant '' Scoparia dulcis'' found in Northern Vietnam. Medical uses As a medication, it is used to treat several conditions, including allergic reaction anaphylaxis, cardiac arrest, and superficial bleeding. Inhaled adrenaline may be used to improve the symptoms of croup. It may also be used for asthma when other treatments are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sympathetic Nervous System
The sympathetic nervous system (SNS or SANS, sympathetic autonomic nervous system, to differentiate it from the somatic nervous system) is one of the three divisions of the autonomic nervous system, the others being the parasympathetic nervous system and the enteric nervous system. The enteric nervous system is sometimes considered part of the autonomic nervous system, and sometimes considered an independent system. The autonomic nervous system functions to regulate the body's unconscious actions. The sympathetic nervous system's primary process is to stimulate the body's fight or flight response. It is, however, constantly active at a basic level to maintain homeostasis. The sympathetic nervous system is described as being antagonistic to the parasympathetic nervous system. The latter stimulates the body to "feed and breed" and to (then) "rest-and-digest". The SNS has a major role in various physiological processes such as blood glucose levels, body temperature, cardiac output, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fight-or-flight Response (in Animals)
The fight-or-flight or the fight-flight-freeze-or-fawn (also called hyperarousal or the acute stress response) is a physiological reaction that occurs in response to a perceived harmful event, attack, or threat to survival. It was first described by Walter Bradford Cannon in 1915. His theory states that animals react to threats with a general discharge of the sympathetic nervous system, preparing the animal for fighting or fleeing. More specifically, the adrenal medulla produces a hormonal cascade that results in the secretion of catecholamines, especially norepinephrine and epinephrine. The hormones estrogen, testosterone, and cortisol, as well as the neurotransmitters dopamine and serotonin, also affect how organisms react to stress. The hormone osteocalcin might also play a part. This response is recognised as the first stage of the general adaptation syndrome that regulates stress responses among vertebrates and other organisms. Name Originally understood as the "fight-or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
General Adaptation Syndrome
Stress, whether physiological, biological or psychological, is an organism's response to a stressor, such as an environmental condition or change in life circumstances. When stressed by stimuli that alter an organism's environment, multiple systems respond across the body. In humans and most mammals, the autonomic nervous system and hypothalamic-pituitary-adrenal (HPA) axis are the two major systems that respond to stress. Two well-known hormones that humans produce during stressful situations are adrenaline and cortisol. The sympathoadrenal medullary axis (SAM) may activate the fight-or-flight response through the sympathetic nervous system, which dedicates energy to more relevant bodily systems to acute adaptation to stress, while the parasympathetic nervous system returns the body to homeostasis. The second major physiological stress-response center, the HPA axis, regulates the release of cortisol, which influences many bodily functions, such as metabolic, psych ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Husbandry
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, management, production, nutrition, 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. During the period of ancient societies like 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 Dishley Longhorn cattle and Lincoln Longwool sheep were rapidly improved by agriculturalists, such as Robert Bakewell, to yield more meat, milk, and wool. A wide range of other species, such as horse, water buffalo, llama, rabbit, and guinea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cattle Race
A cattle chute (North America) or cattle race (Australia, British Isles and New Zealand) also called a run or alley, is a narrow corridor built for cattle that separates them from the rest of the herd and allows handlers and veterinarians to provide medical care or restrain the animal for other procedures. A conventional cattle chute consists of parallel panels or fences with a space between them that is slightly wider than one animal so they are unable to turn around. Cattle chutes gently restrain the animal using a squeeze mechanism. The chute is connected to an alley, forming the animals into a queue that only allows them to go forward. Cattle tubs or a BudBox can also be used to help with animal flow and maintain low-stress cattle handling principles. It is used for routine husbandry activities such as drafting (sorting) or loading animals via ramp or ''loading chute'' into a vehicle; placing them one at a time in a '' cattle crush'' (variations also called a ''squeeze chute'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cattle Crush
A cattle crush (in UK, New Zealand, Ireland, Botswana and Australia), squeeze chute (North America), cattle chute (North America), standing stock, or simply stock (North America, Ireland) is a strongly built stall or cage for holding cattle, horses, or other livestock safely while they are examined, marked, or given veterinary treatment. Cows may be made to suckle calves in a crush. For the safety of the animal and the people attending it, a close-fitting crush may be used to ensure the animal stands "stock still". The overall purpose of a crush is to hold an animal still to minimise the risk of injury to both the animal and the operator while work on the animal is performed. Construction Crushes were traditionally manufactured from wood; this, however, was prone to deterioration from the elements over time, as well as having the potential to splinter and cause injury to the animal. In recent years, most budget-quality crushes have been built using standard heavy steel pipe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brahman Cattle
In Hinduism, ''Brahman'' (; International Alphabet of Sanskrit Transliteration, IAST: ''Brahman'') connotes the highest universal principle, the ultimate reality of the universe.P. T. Raju (2006), ''Idealistic Thought of India'', Routledge, , page 426 and Conclusion chapter part XII In the Vedic Upanishads, ''Brahman'' constitutes the fundamental reality that transcends the duality of existence and non-existence. It serves as the absolute ground from which time, space, and natural law emerge. It represents an unchanging, eternal principle that exists beyond all boundaries and constraints. Because it transcends all limitation, ''Brahman'' ultimately defies complete description or categorization through language. In major schools of Hindu philosophy, it is the non-physical, efficient, formal and final Four causes, cause of all that exists.For dualism school of Hinduism, see: Francis X. Clooney (2010), ''Hindu God, Christian God: How Reason Helps Break Down the Boundaries betwe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Registry Of Professional Animal Scientists
The American Registry of Professional Animal Scientists (ARPAS) is a professional organization that provides certification of animal scientists through examination. It also develops and promotes a code of ethics, offers continuing education, and disseminates scientific information through publication of the peer-reviewed journal ''Applied Animal Science'' ARPAS members are generally animal scientists educated at land-grant universities throughout the United States. Professional animal scientists serve as consultants, researchers, educators, extension agents and regulators in jobs relating to the animal industry. ARPAS is affiliated with five professional societies: the American Dairy Science Association (ADSA), the American Meat Science Association (AMA), the American Society of Animal Science (ASAS), the Equine Science Society (ESS) and the Poultry Science Association (PSA). Founded in 1973, ARPAS is headquartered in Champaign, Illinois Champaign ( ) is a city in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
