[Drickamer L. C., Arthur R. D., Rosenthal T. L. (1997). Conception failure in swine: importance of the sex ratio of a female's birth litter and tests of other factors. J. Anim. Sci., 75: 2192-2196.]Search in Google Scholar
[Drickamer L. C., Rosenthal T. L., Arthur R. D. (1999). Factors affecting the number of teats in pigs. J. Reprod. Fertil., 115: 97-100.]Search in Google Scholar
[Eckert R., Żak G. (2011). Results of performance tested gilts. Report on pig breeding in Poland in 2010. Kraków, XXIX: 34-44.]Search in Google Scholar
[Foxcroft G. R., Dixon W. T., Dyck M. K., Novak S., Harding J. C., Almeida F. C. (2009). Prenatal programming of postnatal development in the pig. Soc. Reprod. Fertil., Suppl., 66: 213-231.]Search in Google Scholar
[Foxcroft G. R., Dixon W. T., Novak S., Putman C. T., Town S. C., Vinsky M. D. (2006). The biological basis for prenatal programming of postnatal performance in pigs. J. Anim. Sci., Suppl., 84: E105-112.]Search in Google Scholar
[Górecki T. (2003). Sex ratio in litters of domestic pigs (Sus scrofa f. domestica Linnaeus, 1758). Biol. Lett., 40: 111-118.]Search in Google Scholar
[Górecki T., Kościński K. (2003). Offspring sex ratio in domestic goat (Capra hircus). Arch. Tierzucht., 46: 277-284.]Search in Google Scholar
[Hotchkiss A. K., Lambright C. S., Ostby J. S., Parks-Saldutti L., Vandenbergh J. G., Gray L. E. Jr. (2007). Prenatal testosterone exposure permanently masculinizes anogenital distance, nipple development, and reproductive tract morphology in female Sprague-Dawley rats. Toxicol. Sci., 96: 335-345.]Search in Google Scholar
[Huehn H., Tuchscherer A., Breite L., Grodzycki M., Huehn U. (2002). Influence of base litter sex ratio of gilts on their subsequent reproductive performances. Zuchtungskunde 74: 56-69.]Search in Google Scholar
[Hurd P. L., Bailey A. A., Gongal P. A., Yan R. H., Greer J. J., Pagliardini S. (2008). Intrauterine position effects on anogenital distance and digit ratio in male and female mice. Archiv. Sexual Behav., 37: 9-18.]Search in Google Scholar
[Orzechowska B., Mucha A. (2011). Results of reproductive performance of breeding sows. Report on pig breeding in Poland in 2010. Kraków, XXIX: 3-18.]Search in Google Scholar
[Orzechowska B., Tyra M., Mucha A. (2002). Reproductive performance of sows from litters of various sex ratio. Ann. Anim. Sci., 2: 155-159.]Search in Google Scholar
[Orzechowska B., Tyra M., Mucha A. (2011). Evaluation of pig breeding value using the BLUP method. Reproductive performance. Kraków, VII: 1, 3-6.]Search in Google Scholar
[Owsianny J., Wejksza D., Czarnecki R. (1991). Reproductiveness of gilts originated from litters with the different participation of young boars. Abstr. 42nd Ann. Meet. EAAP, 8-12.09.1991, Berlin, 2, p. 473.]Search in Google Scholar
[Rekiel A., Więcek J., Wojtasik M., Kulisiewicz J., Batorska M. (2010). The internal environment and reproduction in multifetal species (in Polish). Rocz. Nauk. Zoot., Monogr. Rozpr., 44: 79-88.]Search in Google Scholar
[Rekiel A., Wojtasik M. (2010). Sex ratio in populations in terms of maximization of reproductive success (in Polish). Rocz. Nauk. Zoot., Monogr. Rozpr., 44: 113-126.]Search in Google Scholar
[Rohde Parfet K. A., Ganjam V. K., Lamberson W.R, Rieke A. R., vom Saal F. S., Day B. N. (1990 a). Intrauterine position effects in female swine: subsequent reproductive performance, and social and sexual behavior. Appl. Anim. Behav. Sci., 26, 4: 349-362.10.1016/0168-1591(90)90034-B]Search in Google Scholar
[Rohde Parfet K. A., Lamberson W. R., Rieke A. R., Centlez T. C., Ganjam V. K., vom Saal F. S., Day B. N. (1990 b). Intrauterine position effects in male and female swine subsequent survivability, growth rate, morphology and semen characteristics. J. Anim. Sci., 68, 1: 179-185.10.2527/1990.681179x2303395]Search in Google Scholar
[Ryan B. C., Vandenbergh J. G. (2002). Intrauterine position effects. Neurosci. Biobehav. Rev., 26: 665-678.]Search in Google Scholar
[Salazar-Martinez E., Romano-Riquer P., Yanez-Marquez E., Longnecker M. P., Hernandez-Avila M. (2004). Anogenital distance in human male and female newborns: a descriptive, cross-sectional study. Environ. Health, 3, p. 8.10.1186/1476-069X-3-852108415363098]Search in Google Scholar
[SPSS 2009. User's Guide 12.0. SPSS Inc.]Search in Google Scholar
[Stasiak A. (1996). Interdependence between sexual activity of gilts during oestrus, development of reproductive organs, and potential and actual fertility (in Polish). Rozpr. Nauk. Wyd. AR Lublin.]Search in Google Scholar
[Toro M. A., Fernández A., García-Cortés L. A., Rodrigáñez J., Silió L. (2006). Sex ratio variation in Iberian pigs. Genetics, 173: 911-917.]Search in Google Scholar
[Vandenbergh J. G. (2003). Prenatal hormone exposure and sexual variation. Am. Scientist, 91: 218-225.]Search in Google Scholar
[Walkiewicz A., Babicz M., Kasprzyk A., Dziura J. (2000). Analysis of piglet sex distribution in litters from PL breeding sows and the relationship between litter traits and reproductive performance of gilts reared. Ann. UMCS, sectio EE Zootech., 18: 61-68.]Search in Google Scholar
[Walkiewicz A., Stasiak A. (1988). Variation in uniformity of litters from breeding sows of the Puławska and Polish Large White breeds (in Polish). Zesz. Probl. Post. Nauk Rol., 335: 135-141.]Search in Google Scholar
[Weiss B. (2006). Anogenital Distance: Defining "Normal". Environ. Health Perspect., 114, p. 399.10.1289/ehp.114-a399a151330716835039]Search in Google Scholar