maternal effect


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Related to maternal effect: Maternal inheritance

maternal effect

maternal effect

an environmental phenomenon in which the phenotype of an offspring is influenced by the maternal tissue. An example is the adverse influence of maternal smoking on the weight of the unborn baby.

maternal

pertaining to the female parent.

maternal antibodies
see maternal antibody and passive immunity.
maternal bond
see dam-offspring bond.
maternal effect
the transitory influence of the mother on the phenotype of her offspring, caused by factors such as milk yield and uterine environment.
maternal neglect
failure of the dam to stay with the neonate, failure to groom it, help it to feed, find it if separated. The extreme degree is desertion. Characteristic of some breeds, e.g. merino ewes. See also mismothering.
maternal nutritional status
body condition of a dam, pregnant or with a neonate at foot; important management feature as insurance for the survival of the offspring.
maternal obstetric paralysis
a common abnormality after a difficult calving, especially in a heifer. It is caused by pressure on peripheral nerves, and manifests itself as weakness, paresthesia in one hindleg, or difficulty or inability to rise. The ligaments, joints and muscles are normal. See also obturator paralysis.
maternal pelvic inlet
the size of the aperture leading from the peritoneal to the pelvic cavity.
References in periodicals archive ?
The genetic variances due to direct and maternal effects were somewhat similar.
The present study shows the importance of inclusion of maternal effects in designing appropriate breeding programs for genetic improvement in Brown Swiss calves for birth weight.
Such influences are referred to as maternal effects [MEs].
In contrast to germination, size-related maternal effects were important for seedling survival, but notably, only in the degraded-forest habitat.
Others utilizing Falconer's (1965) simplified approach have demonstrated negative maternal effect coefficients (m).
2] reciprocal contrasts to investigate the maternal effects on the iron and zinc concentrations in common bean seeds for each hybrid combination.
81; maternal effect variance for across experiments analysis using Maternal x Exp.
This novel line contained free X and Y-chromosomes that were completely South African in origin, autosomes and maternal effects that were largely South African in origin, and cytoplasms that fully retained their original 2119 genetic identity [ILLUSTRATION FOR FIGURE 2 OMITTED].
Low estimate rates of maternal hereditability denote a small contribution of maternal effect throughout the growth curve of the animal and the low selection for the same characteristic in beef Zebu cattle.
Growth traits particularly pre-weaning in mammalian are not only influenced by the genetic effect but some other effects such as direct maternal effect and permanent environmental effects (Rashidi et al.
No significant maternal effect was discovered for the zinc concentration in the common bean seeds (ROSA et al.

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