. FiG. 43. A photoi^raph of a section of a tuberculous ulcer, from a corv's intestine, sho7c'in<rinfltration under the tnaroinal mucosa. tribution of lesions. Frequently animals are killed soon after infection has taken place, in which case the lesions are re- stricted to a single lymphatic gland or other organs. In other cases old lesions of considerable proportion are found as shown in Fig. 36, where the heart muscle is entirely encased in a thick calcareous tuberculous deposit. In this case, the animal was in good and killed for beef without a suspicion that it was in any way dise
. FiG. 43. A photoi^raph of a section of a tuberculous ulcer, from a corv's intestine, sho7c'in<rinfltration under the tnaroinal mucosa. tribution of lesions. Frequently animals are killed soon after infection has taken place, in which case the lesions are re- stricted to a single lymphatic gland or other organs. In other cases old lesions of considerable proportion are found as shown in Fig. 36, where the heart muscle is entirely encased in a thick calcareous tuberculous deposit. In this case, the animal was in good and killed for beef without a suspicion that it was in any way diseased. TUBERCULOvSIS IN vSWINE § 144. Channels of infection. It is stated that among swine young animals belonging to the precocious breeds seem to be more liable to tuberculosis than others. In nine eases out of ten the animals are infected by ingestion. The pig easily becomes tuberculous when fed on material rich in tuber- cle bacteria. If pigs are fed on the refuse from dairies and cheese manufactories in districts where there is much tubercu-
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Keywords: ., bookcentury1900, bookcollectionamer, bookdecade1900, bookyear1908
