Porcine testicular hypoplasia in line breeding herd
1987
Kanchana Markvichitr (Kasetsart Univ., Bangkok (Thailand). Dept. of Animal Science) | Worawidh Wajjwalku
Clinical and morphological examination in four (test mating Large White Breed) boars through in line breeding method was conducted at Tabkwang swine breeding station, it was observed that, one boar of this group has served 4 sows but all of which returned to heat after normal cycle length, general health, libido and copulating ability were normal, but both of testicles were reduced in size and consistency. This boar was ejaculated once a week and fed with vitamins and minerals supplement throughout period of 6 months since the abnormal clinical sign was observed, no sperm was found in normal range ejaculate volume, semen picture revealed Azoospermia with a large number of round cells of spermatogenic origin. By histopathological examination of the reproductive organs was revealed normal function of accessory sexual glands, epididymis and ductus deference. However the specific pathological lesions of bilateral testicular hypoplasia had been identified as the first diagnosis due to the breeding record and result of andrological examination.
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