1[2]Piper L R, Bindon B M. The Booroola Merino and the performance of medium non-Peppin crosses at Armidale[A].In: Piper L R, Bindon B M, Nethery R D(eds.). The Booroola Merino[C]. Melbourne, Australia: CSIRO. 1982, 9～20.
2[3]Davis G H, Montgomery G W, Allison A J, Kelly R W, Bray A R. Segregation of a major gene influencing fecundity in progeny of Booroola sheep [J]. New Zealand Journal of Agricultural Research, 1982, 25(4):525～529.
3[4]MulsantP, Lecerf F, Fabre S, Schibler L, Monget P,Lanneluc I, Pisselet C, Riquet J, Monniaux D, Callebaut I,Cribiu E, Thimonier J, Teyssier J, Bodin L, Cognie Y, Chitour N, Elsen J M. Mutation in bone morphogenetic protein receptor-IB is associated with increased ovulation rate in Booroola Merino ewes[J]. Proc. Natl. Acad. Sci. USA, 2001,98(9): 5104～5109.
4[5]Wilson T, Wu X Y, Juengel J L, Ross I K, Lumsden J M,Lord E A, Dodds K G, Walling G A, McEwan J C, O'Connell A R, McNatty K P, Montgomery G W. Highly prolific Booroola sheep have a mutation in the intracellular kinase domain of bone morphogenetic protein IB receptor (ALK-6)that is expressed in both oocytes and granulosa cells[J]. Biol.Reprod, 2001, 64(4):1225～1235.
5[6]Souza C J H, MacDougall C, Campbell B K, McNeilly A S,Baird D T. The Booroola(FecB) phenotype is associated with amutation in the bone morphogenetic receptor type 1B (BMPRIB) gene[J]. J. Endocrinol. , 2001,169(2):R1～R6.
6[7]Davis G H, Galloway S M, Ross I K, Gregan S M, Ward J,Nimbkar B V, Ghalsasi P M, Nimbkar C, Gray G D,Subandriyo, Inounu I, Tiesnamurti B, Martyniuk E,Eythorsdottir E, Mulsant P, Lecerf F, Hanrahan J P, Bradford G E, Wilson T. DNA tests in prolific sheep from eight countries provide new evidence on origin of the Booroola (FecB)mutation[J]. Biol. Reprod. , 2002, 66(6) :1869～1874.
7[8]Galloway S M, McNatty K P, Cambridge L M, Laitinen M P E, Juengel J L, Jokiranta T S, McLaren R J, Luiro K, Dodds K G, Montgomery G W, Beattie A E, Davis G H, Ritvos O.Mutations in an oocyte-derived growth factor gene (BMP15)cause increased ovulation rate and infertility in a dosagesensitive manner[J]. Nature Genetics, 2000, 25 (3) :279～283.
8[9]Hanrahan P J, Gregan S M, Mulsant P, Mullen M, Davis G H, Powell R, Galloway S M. Mutations in the genes for oocytederived growth factors GDF9 and BMP15 are associated with both increased ovulation rate and sterility in Cambridge and Belclare sheep (Ovis aries) [J]. Biol. Reprod. , 2004, 70 (4) :900～909.
9[12]Chu M X, Wang J Z, Wang A G, et al. Association analysis between fivemicrosatellite loci and litter size in Small Tail Han sheep[J]. Asian-Aust. J. Anim. Sci., 2003, 16(11):1555～1559.
10[15]Chu M X, Ji C L, Chen G H. Association between PCRRFLP of melatonin receptor 1a gene and high prolificacy in Small Tail Han sheep[J]. Asian-Aust. J. Anim. Sci. , 2003,16(12): 1701～1704.
