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Chromosomal pericentric inversion detected in a sow and her piglets
Y I Miyake1, T Matsubara, M Hata
1Laboratory of Theriogenology, Faculty of Agriculture Iwate University, Morioka 020, Japan.
Abstract:
Forty-four pigs with the suspicious symptoms of porcine stress syndrome (PSS) were selected for chromosome analysis. Cytogenetic evaluation by means of the G-banding technique revealed that one sow had an abnormal (38,XX, inv (1p+q-) (2.1;1.1) karyotype. The same abnormality was also detected in 8 of 13 offspring of this sow. However, there was no correlation between the chromosome abnormality and PSS. The chromosome abnormality did not give rise to a reduction in the fertility of this sow or in the viability of her offspring. This case represents the first reported instance of pericentric inversion in swine.
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