Open AccessChromosomal Abnormalities in Hypoprolific Boars
Author(s) -
Pinton Alain,
Ducos Alain,
Berland Helene,
Seguela Anne,
BrunBaronnat Corinne,
Darré Aafke,
Darré Roland,
Schmitz Annette,
Yerle Martine
Publication year - 2000
Publication title -
hereditas
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 50
eISSN - 1601-5223
pISSN - 0018-0661
DOI - 10.1111/j.1601-5223.2000.00055.x
Subject(s) - purebred , chromosomal translocation , biology , boar , crossbreed , chromosomal inversion , genetics , domestic pig , chromosome , litter , karyotype , gene , sperm , agronomy , forestry , geography
Four new chromosomal rearrangements are reported in the domestic pig: 3 reciprocal translocations, rcp(4;12)(p13;q13) in a crossbred boar, rcp(1; 7)(q 17;q26) in a Large White purebred boar, rcp(1;6)(q17;q35) in a purebred synthetic paternal line boar, and a pericentric inversion inv(2)(p13q11) in a crossbred boar. The 1/7 reciprocal translocation and the pericentric inversion were detected in animals that had sired small litters. The effect of the 1/7 translocation was accurately determined: –4.5 piglets born per litter, i.e. –36%. Both the 1/6 and 1/7 reciprocal translocations were of maternal origin. All the chromosomal rearrangements were highlighted using GTG and/or RBG banding techniques. Chromosome painting experiments were also carried out to confirm the proposed hypotheses for the three reciprocal translocations.