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$aa = 'Abnormal, soft or watery droppings in pigeon lofts are a very common problem. The occurrence of such pigeon droppings is easy to be discovered by pigeon owners, and it also means that the pigeons A warning for group health. Normal stool is often described as brown/green, marble-like, containing a cap-like substance formed by white urate crystals excreted by the kidneys, and there are often soft hairs attached to the stool. All of the above are considered healthy. .
　Abnormal stools originating from the intestinal system or urinary system, severe thirst or the above-mentioned mixed problems; extremely soft or watery stools, regardless of the form, are recognized as diarrhea in this chapter. Diarrhea (pigeon owners often describe it as wet discharge, watery discharge, squirting, striped stool, green stool, white stool, etc.) has a gradually increasing trend with the exchange of domestic and foreign competitions and exhibitions, and due to the various pigeons The increase in prize money during the meeting caused the pigeon owners to over-indulge the racing pigeons, and excessive amounts of various drugs and supplements were given, which in turn damaged the urinary system (kidney disease itself), resulting in watery diarrhea (polyuria, Severe thirst and gradual loss of appetite) also occur more frequently than in foreign countries. Most pigeon owners prefer to believe that dysentery is a separate disease rather than a clinical symptom caused by the disease.
 When racing pigeons develop diarrhea, there are obviously many underlying factors. In addition, individual pigeons may also have various loose stools due to factors such as nervousness, neoplasms, foreign objects in the digestive tract, diabetes, etc.
This chapter focuses on mass dysentery, as detailed below.
　Paramyxovirus-1 (PMV-1)
Cause: Paramyxovirus infection, pigeon owners often call it Paramyxovirus (transliteration), its correct classification is as follows:
Paramyxoviridal Family ), divided into 3 genera:
 1. Paramyxovirus (PMV) is divided into 9 groups, 2 of which are pathogenic to birds.
　◎Parainfluenza-1, divided into 4 strains:
　●Newcastle Virus (NDV Newcastle virus): poultry, pigeons, birds, humans.
　●PMV-1 (Paramyco): Pigeons (common), chicks.
　●Sendai.
　●HA2: No impact on birds.
　◎Parainfluenza-7, divided into 2 strains:
　●Tenn/USA/4/75: Dove.
　●Otaru/Japan/76: Rock Pigeon.
　●Morbillivirus(M)
　●Pneumovirus(P)
　The virus strains that can affect pigeons are NDV and PMV-1, and there is extremely strong cross-immune antigenicity between the two.
In recent years, due to the exchange of pigeons, the large number of pigeons, and the lack of implementation of the vaccination plan, diarrhea in pigeons due to PMV-1 infection has become the most common; typical cases of outbreaks of this disease are sudden Thirst and diarrhea begin to appear, and the sick pigeons show variable neurological symptoms, including tremors, torticollis, drooped wings, weak feet, and inability to eat properly, loss of balance, and will make circular movements and lie on their sides; all ages All pigeons can be infected, depending on their immune status. This disease is a notifiable infectious disease with no special treatment and should be controlled through epidemic prevention. ';
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