What is euthanasia The word euthanasia comes from the Greek word “eu”, which means “peaceful and meaningful death”. A peaceful death means a minimal amount of pain and distress. Euthanasia in laboratory animal science refers to the humane death of laboratory animals. Because laboratory animals are used as human scapegoats in various scientific experiments, humans have an obligation to treat them with sufficient respect and to execute them with as little pain and distress as possible. Euthanasia techniques are difficult to achieve complete absence of pain and suffering, but by improving the environmental conditions in which euthanasia is performed and by mastering the techniques, the suffering of animals can be reduced. As can be seen from the definition, euthanasia techniques contain two aspects, one is to reduce pain and the other is to reduce suffering. Pain reduction requires the establishment of painless death techniques, and pain relief requires minimizing the animal’s perception (loss of consciousness). The treatment of dog euthanasia is explained in detail drug method drug euthanasia technology methods are: direct or indirect hypoxia, neuronal inhibition of vital functions and direct destruction of brain activity or neurons of vital functions. Direct or indirect hypoxia. It can be done anywhere and can cause loss of consciousness at different rates. Death without pain and suffering must be preceded by loss of consciousness (loss of muscle activity), while loss of movement is not the same as loss of consciousness and absence of pain. Therefore, euthanasia drugs that cause muscle paralysis but not loss of consciousness (e.g., depolarizing or nondepolarizing muscle relaxants, strychnine, nicotine, magnesium salts, etc.) cannot be used as a single method of euthanasia. Neuron-inhibiting drugs for vital functions first inhibit brain neurons subsequently causing death of the animal. Some drugs are administered in such a way as to put the animal in a so-called agitated manic phase, possibly with grunting or muscle contractions. However, this is not purposeful and death occurs immediately with loss of consciousness due to inadequate oxygenation of the respiratory center caused by cessation of the heartbeat. Direct destruction of brain activity or vital function neurons, from direct impact damage to the brain and depolarization of brain neurons can make the animal immediately lose consciousness, death comes from the midbrain control of the heart and respiratory center disappears, sometimes you can see the animal’s violent muscle activity, but this is the animal has not felt pain and suffering. 1, inhaled drugs: any inhaled drugs need to reach a certain concentration in the alveoli to The animal needs a certain time to die. The principle of drug selection lies in whether the animal feels pain and suffering during the period between the start of inhalation and death, and the use of this method should be noted. (1) the ability to quickly reach high concentrations, relatively rapid loss of consciousness, more humane drugs used for euthanasia; (2) equipment can meet the rapid drug to reach high concentrations and can maintain a certain period of time without leakage; (3) most drugs are harmful to humans, such as anesthesia dangerous (**), coma (halothane), hypoxia (nitrogen and carbon monoxide) (4) alveolar ventilation is slow to cause the animal (5) newborn animals are tolerant to hypoxia and should not be euthanized by inhalation; (6) high-speed airflow is likely to produce noise to frighten animals; (7) only one animal can be placed in a box; (8) reptiles, amphibians, diving birds and diving mammals cannot be euthanized by inhalation 2. Drug injection is a quicker and more reliable method of euthanasia. If the animal does not cause fear and pain, euthanasia by drug injection is recommended. However, animal restraint and preservation will add additional intimidation and anxiety to the animal, if necessary, the use of sedation and anesthesia methods to assist in euthanasia. Euthanasia of aggressive, frightening, and ferocious animals is best preceded by sedation followed by intravenous euthanasia. When intravenous euthanasia is difficult, intraperitoneal injection with nonirritating drugs (non-closing neuromuscular drugs) is also possible, but because it takes phase 1 and phase 2 anesthesia to die, the animal needs to be placed in a small, quiet box to avoid irritation and trauma. Intracardiac injections are also possible in deeply sedated, anesthetized or sleeping animals. Intramuscular injection, thoracic injection, subcutaneous injection, intrapulmonary injection, intrahepatic injection, intrapleural injection, intrarenal injection, intrathecal injection and other non-intravenous methods of drug euthanasia cannot be used. 3、Physical methods Physical euthanasia methods include spinal stabbing, gunshot, decervicalization, severed head, electric shock, microwave stimulation, execution trap, chest compression, bloodletting. The euthanasia by skilled personnel using good equipment is better than other euthanasia methods, the animal can hardly feel fear and anxiety because of the speed and the animal does not feel pain. Bloodletting, stunning, and cerebrospinal puncture should not be used as a single method, but as a complement to other euthanasia methods. It has been argued that physical methods of euthanasia are not aesthetically pleasing, but aesthetics and humanity are always opposed. In some cases physical methods are the most appropriate method of euthanasia because they avoid or shorten the unnecessary pain and suffering that animals endure before death, but they require well-trained personnel with an aesthetic perspective. Because all physical methods are traumatic and potentially dangerous to both animals and humans, proficiency is essential. 4, auxiliary methods of stunned and cerebrospinal puncture application is appropriate, can lead to loss of consciousness but not guarantee death, often used as an auxiliary method of euthanasia, with the use of drugs, bloodletting and other euthanasia methods used. The above is the treatment of dog euthanasia, as to how to implement euthanasia for dogs, want to euthanize the dog friends, if not fully grasp, I suggest not to act privately, in case of inadvertence, will bring more serious dogs Shanghai, to the professional hospital to implement some insurance.
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