Target
and non-target tissues of 41 goats and 20 sheep (farm and
farmer's stocks were screened by culture and PCR, to know the
distribution of MAP in different tissues and organs. Species-wise,
prevalence of MAP was 42.5 and 40.0% in goats and sheep,
respectively and was 48.1 and 39.3% in animals (goats and sheep)
from farm and farmer's stocks, respectively. Of the 215
tissues screened by culture, 47.9% were positive for MAP.
Prevalence was 50.8 and 40.0% in tissues of goats and sheep from
farm stock, respectively and 60.0 and 44.2% in tissues of young and
adult animals, respectively. Tissues-wise, 42.5 and 53.8% farm
animals were positive in culture of mesenteric lymph nodes (MLN)
and intestine tissues, respectively, whereas, 37.5 and 41.1%,
respectively in farmer's animals. Screening of supra-mammary
lymph nodes (SMLN), 52.5 and 43.1% were positive from farm and
farmer's animals, respectively. Inflamed SMLN from farm
stocks showed higher infectivity. MAP was recovered from 73.6,
64.2, and 54.5% tissues of uterus, udder and testes, respectively m
farm stocks. Of the MAP cultured from goats, 82.0% were pauci and
17.9% multi-bacillary and from sheep, all the cultures were pauci
bacillary. Majority of colonies appeared between 45 and 120 days
post inoculation. Decontaminated pellets from tissues and MAP
cultures were processed for DNA isolation and screened by IS900
PCR. Positive DNA samples on amplification yielded specific229 bp
band from pellets of intestine, MLN, SMLN, udder, uterus and
testes. From MAP cultures, 4 of 13 DNA were amplified. Protoplasmic
(PPA) antigen from MAP 'Bison type' strain cultured
from a terminal case of JD in goat was used in ELISA. Study
revealed that MAP was distributed widely in target and non-target
tissues of goats and sheep. Of the 3 tests culture of tissues was
most sensitive. This is the first report of recovery of MAP from
non-target tissues of goats and sheep in India.