. The domestic sheep : its culture and general management. Sheep. DISEASES OF SHEEP. 345. that are not well understood, but are l>elieved to consist of some unfavorable qualities of the Avatev and the herbage. It kiu)wn by English and Scotch shepherds as the louping ill, or hydro- rachitis; fi'om which derived the comnKUi tenn rickets; applied to young animals affected by Aveakness of the hind limbs. See fig. 25. The common form is similar to inflammation of the brain in its effects on the animal, and similar symptoms are perceived. These are pai'oxysms of convul&ed movements; a
. The domestic sheep : its culture and general management. Sheep. DISEASES OF SHEEP. 345. that are not well understood, but are l>elieved to consist of some unfavorable qualities of the Avatev and the herbage. It kiu)wn by English and Scotch shepherds as the louping ill, or hydro- rachitis; fi'om which derived the comnKUi tenn rickets; applied to young animals affected by Aveakness of the hind limbs. See fig. 25. The common form is similar to inflammation of the brain in its effects on the animal, and similar symptoms are perceived. These are pai'oxysms of convul&ed movements; a high temper- turea; a rapid pulse and breathing. These finally end in paralysis of the hind parts, so tiiat the young animals, which are mostly subject to this disorder, drag their hind limbs along without ability to move them. There is a great tenderness along the spine, and the animal shrinks when the spine is pressed. If the patient is able to stand is is only in a staggering way, and it rests its Fig. head against any support within reach. These symptoms are greatly increased in the enzootic form. Lambs are frequently born diseased, and are paralyzed from their birth. Others are attacked later, and after a time up to a year and a half old. The old sheep are rarely subject to the disease. The lamb in some ins?tances has the head and neck drawn to one side othere exhibit spasmodic movements by which they seem to be endeavoring to leap, using, however, only their forelegs. From this svmptom the Iqcal name of louping or leaping ill or disease is given^ But mostly the lamb lies half reclining on the ground and drags its hind parts along as shown in the illustration, fig. 2o. The causes seem to include among others generally applicable to this class of diseases, a certain distinct unwholesome quality in the herbage, thought to be due to the geological character of the soil, bv which excessive succulence ifS^^e" *«.. ^t, leading to chronic indigestion and mal-
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectsheep, bookyear1900
