Diseases of cattle, sheep, goats Diseases of cattle, sheep, goats and swine diseasesofcattle00mous Year: 1920 MILK FISTULA. 569 the permanent discharge of accordino; to circumstances. MILK FISTULA. Causation. Any accidental injury to the udder which estabUshes connection between the galactophorous canals or the galactophorous sinus and the exterior may give rise to milk fistula, if the injury occur during lactation. Apart from lactation these wounds may be grave, though if care- fully treated they heal without comphcation. During lactation, on the contrary, the miWi escapes permanently from
Diseases of cattle, sheep, goats Diseases of cattle, sheep, goats and swine diseasesofcattle00mous Year: 1920 MILK FISTULA. 569 the permanent discharge of accordino; to circumstances. MILK FISTULA. Causation. Any accidental injury to the udder which estabUshes connection between the galactophorous canals or the galactophorous sinus and the exterior may give rise to milk fistula, if the injury occur during lactation. Apart from lactation these wounds may be grave, though if care- fully treated they heal without comphcation. During lactation, on the contrary, the miWi escapes permanently from the injured spot, cicatrisation cannot occur, and a fistula forms. Symptoms. The principal symptom is milk. The fistula may be large or small In rare instances it is situated on the udder itself, but it is com- monest on the teat. Milk may escape in mere drops or, on the other hand, in con- siderable quantities. Diagnosis. The diagnosis presents no difticulty. Prognosis. The prognosis is grave so far as the loss of milk is concerned, although the lesion has no effect on the general health it may cause the interior Fig. 238.—Milk fistulte. 1, Deep suture—schema show- ing the course of the suture; FL, base of the fistula ; 8., suture ; 2, superficial interrupted suture. , It is particularly serious, however, because to become infected, and an acute parenchy- matous mammitis may thus be set up. It must also be borne in mind that old fistulfe are much more difficult to obliterate than recent ones. Treatment is much more troublesome than might at first be thought, the great obstacle to repair being the continual secretion and discharge of milk. At first, attempts should be made to re-establish and render permanent the natural method of discharge. This can be efiected by inserting an aseptic milk catheter and fixing it in position with a little pitch bandage. The course of the fistula is then cleansed, curetted, and rendered aseptic in some way, as for example by washing with
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