Avian mothers create different phenotypes by hormone deposition in ...
Abstract An increasing number of studies in a variety of taxa demonstrate the role of maternal sex steroids on offspring development. In avian species, mothers deposit substantial amounts of androgens in their eggs, and experimental evidence indicates that these maternal androgens influence the chick's early development.
The effects of nutrition and stress and their influence on the maternal environment have been extensively investigated in mammalian literature, primarily focusing on the development and function ...
Protective mother hens
Request PDF | Protective mother hens: Cognitive influences on the avian maternal response | We previously demonstrated that domestic hens, Gallus gallus domesticus, show behavioural and phys ...
As we can see from the illustration, Maternal Influence On Avian Ambivalence has many fascinating aspects to explore.
In addition to these parental influences , evidence suggests that avian embryos are able to perceive and actively respond to their environment during incubation and adjust their own development. Evolution of embryos' responses to developmental environments in birds can be understood in the context of parent-offspring conflicts.
(PDF) Maternal effects through the avian egg
There are many ways in which parents impact on the phenotype of their offspring, independently of genetically transmitted traits. Although such impacts are commonly known as maternal effects, they can be influenced by either parent. In this review we discuss maternal effects in birds in relation to the egg. Sealed from the external environment, the avian egg is a complex structure that has to ...
This review is to assess current industry practices that may influence the maternal (breeder hen) environment, whilst reviewing the concept of developmental programming, and its application to chicken meat production. SUMMARY Environmental factors, both positive and negative, experienced by breeder hens during their reproductive life, can have significant influence on the productive efficiency ...
This particular example perfectly highlights why Maternal Influence On Avian Ambivalence is so captivating.
PDF Cognitive and emotional influences on the avian maternal response
Emotional and cognitive influences on the avian maternal response - summary Mother hens show socially-mediated arousal in response to chick distress Undetermined whether this is associated with a valenced, emotional response Mother hens have a strong influence on how their chicks respond to stressors Relevance to animal welfare
Summary Avian eggs contain substantial amounts of maternal hormones and so provide an excellent model to study hormone-mediated maternal effects. We review this new and rapidly evolving field, taking an ecological and evolutionary approach and focusing on effects and function of maternal androgens in offspring development. Manipulation of yolk levels of androgens within the physiological range ...
The presence of a mother counteracts prenatal stress in a precocial ...
However, these prenatal effects can be modulated by the postnatal environment and especially by maternal care. The impact of maternal care on the modulation of prenatal maternal stress effects has been investigated mainly in mammalian models but, surprisingly, remains little explored in avian species.
