The fertilization of rabbit ova in relation to ovulation. Skjervold HJames J. Van Wagtendonk-de Leeuw. Parity and treatment by parity interactions were tested with residual error. Louis, MO.
Average energy intake among pregnant women carrying a boy compared with a girl. Distortions in the sex ratio have been attributed to factors other than nutrition of the mother [see 14 ]. The greater variance of males in polygynous species, both in terms of early mortality and reproductive success, is well established in wild populations.
Abstract Mammals usually produce approximately equal numbers of sons and daughters, but there are exceptions to this general rule, as has been observed in ruminant ungulate species, where the sex-allocation hypothesis of Trivers and Willard has provided a rational evolutionary underpinning to adaptive changes in sex ratio.
Int J Fertil 15 : — Theriogenology 46 : — Sign In.
Caffeine-mediated changes of sex ratio in Chinese hamsters, Cricetulus griseus. Crews D. Offspring sex ratio in women with android body fat distribution. Cited by: 3 articles PMID: The provisioned group produced a male-biased sex ratio of pouched young, while the controls produced males to females in about the same number.
Diet 1 was low in saturated fat LF , with the majority of calories provided as sugars and complex carbohydrate.