1ALLET J L, LEYMASTER K A, CHRISTENSON R K. The influ- ence of uterine function on embryonic and fetal survival[ J]. J Anita Sci,2002,80 ( Suppl 2 ) : E115 - 125.
2VALLET J L, KLEMCKE H G, CHRISTENSON R K, et al. The effect of breed and intrauterine crowding on fetal erythropoiesis on day 35 of gestation in swine [ J ]. J Anim Sci,2003,81 ( 9 ) : 2352 - 2356.
3TOWN S C, PUTMAN C T, TURCHINSKY N J, et al. Number of conceptuses in utero affects porcine fetal muscle development [ J ]. Reproduction,2004,128 (4) :443 - 454.
4QUESNEL H, BROSSARD L, VALANCOGNE A,et al. Influence of some sow characteristics on within - litter variation of piglet birth weight[ J]. Animal ,2008,2 ( 12 ) : 1842 - 1849.
5REYNOLDS L P, REDMER D A. Angiogenesis in the placenta [ J ]. Biol Reprod ,2001,64 (4) : 1033 - 1040.
6KIM S W, HURLEY W L, WU G, et at. Ideal amino acid balance for sows during gestation and lactation[J]. J Anim Sci,2009,87( 14 Suppl) :E123 - E132.
7MALTIN C A, DELDAY M I, SINCLAIR K D, et al. Impact of manipulations of myogenesis in utero on the performance of adult skeletal muscle[J]. Reproduction ,2001,122(3 ) :359 - 374.
8REHFELDT C, KUHN G. Consequences of birth weight for postna- tal growth performance and carcass quality in pigs as related to myo- genesis[J]. J Anita Sci,2006,84 Suppl:Ell3 - E123.
9REHFELDT C, KUHN G, Nt)RNBERG G, et at. Effects of exoge- nous somatotropin during early gestation on maternal performance, fetal growth, and compositional traits in pigs [ J ]. J Anim Sci,2001, 79(7) :1789 - 1799.
10FOXCROFF G R, DIXON W T, NOVAK S, et at. The biological basis for prenatal programming of postnatal performance in pigs [ J ]. J Anim Sci ,2006,84 Suppl : E105 - E112.
