Displaced Abomasums
Abomasal displacements cause economic loss in dairy herds through treatment costs, premature culling, and production loss. The condition is seen mainly in dairy cows in the first at 3 to 4 weeks after calving and its incidence can be reduced by good management of animals in the weeks before and after parturition. displacement – смещение cause – быть причиной loss – убытки treatment – лечение costs – затраты premature – преждевременный culling – выбраковка production loss – снижение продуктивности condition – патология after – после calving – отёл incidence – число случаев, частота заболеваний reduce – сократить by – за счет management – уход before – перед parturition
Up to 90% of LDAs occur within the first 4 weeks after calving. Affected animals go off feed and become depressed. Producers will frequently notice a drop in appetite and reduced milk production. Symptoms often resemble ketosis with ketones in blood, milk, breath and urine. Animals with right displacement can show more severe signs including colic, elevated heart rate, scant faeces and diarrhoea; if a torsion occurs, animals can go downhill very rapidly showing signs of severe shock with cold extremities and extreme dullness. The veterinary surgeon will listen over the abdomen with a stethoscope for the presence of a pinging noise that sounds like a tap dripping into a steel bucket. The pinging noise is indicative of a gas-filled organ, which is almost certain to be a displaced abomasum. This is the typical area for a left displaced abomasums clinical signs – клинические признаки, симптомы up to – вплоть до occur – происходить within – в течение affected – пораженный go off – переставать feed – кормить, есть producer – производитель frequently – часто resemble – напоминать ketosis – кетоз (избыточное образование кетоновых тел) ketones – кетоны blood – кровь breath urine – моча show – проявлять, обнаруживаться severe – серьезный, тяжелый colic – колики elevated – повышенный heart rate scant – скудный faeces – фекалии diarrhea – диарея torsion go downhill – ухудшаться (о здоровье), идти под откос rapidly – быстро extremity dullness – вялость, притупленность surgeon abdomen – брюхо, брюшная полость stethoscope presence – наличие, присутствие pinging noise – отрывистый звук, звук удара со звуком tap – водопроводный кран drip – капать steel – сталь bucket – ведро filled – наполненный
|