Effect of the strain combination of the donor and recipient on the production efficiency of W-bearing sperm in mixed-sex germline chimeric chickens
Effect of the strain combination of the donor and recipient on production efficiency of W-bearing sperm in mixed-sex chimeric testes was analyzed. The combinations of the donors and recipients were White Leghorn (WL) and Rhode Island Red (RIR), and vice versa. Generated mixed-sex chimeras that had the male phenotype at sexual maturity were classified into four groups: (1) a female WL donor and a male RIR recipient; (2) a male WL donor and a female RIR recipient; (3) a female RIR donor and a male WL recipient; (4) a male RIR donor and a female WL recipient. The mean number of W-bearing sperm detected by in situ hybridization among 10 000 sperm observed were 147, 165, 30 and 45 in groups 1, 2, 3 and 4, respectively. The numbers in groups 1 and 2 were both significantly higher than those of groups 3 and 4 (P < 0.05). The combination of a WL donor and a RIR recipient produced W-bearing sperm more efficiently than the reverse combination.
Document Type: Research Article
Affiliations: 1: Faculty of Agriculture, Shinshu University, Minamiminowa-mura, Nagano-ken, 2: School of Veterinary Medicine, Azabu University, Sagamihara-shi, 3: National Institute of Livestock and Grassland Sciences, Tsukuba Norin Kenkyu Danchi, Ibaraki-ken and 4: National Institute of Agrobiological Sciences, Tsukuba Norin Kenkyu Danchi, Ibaraki-ken, Japan
Publication date: 2002-12-01