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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2018.7(7): 970-977
DOI: https://doi.org/10.20546/ijcmas.2018.707.117


Neurohormonal Control of Lactation and Milk Let-down in Dairy Animals
A. Bhimte1*, N.S. Thakur1, V.P. Maurya2 and G. Singh2
1 Division of Animal Physiology, National Dairy Research Institute, Karnal-132001, Haryana, India
2Division of Physiology and Climatology ICAR-Indian Veterinary Research Institute, Izzatnagar-243122, U.P., India
*Corresponding author
Abstract:

Lactation starts with active contraction of the myoepithelial cells surrounding the alveoli, this process is termed milk ejection, or milk let down. These myoepithelial cells contract when stimulated by oxytocin, a hormone released from the neurohypophysis of the pituitary as a result of a neuro-endocrine reflex. The afferent side of the reflex consists of sensory nerves from the mammary glands, particularly the nipples or teats. Afferent information reaches the hypothalamus, which regulates the release of oxytocin from the neurohypophysis. The milk ejection reflex can be stimulated by suckling, concentrate feeding, barn noises, and the sight of the calf. It can also be inhibited by emotionally disturbing stimuli, such as dog barking, outer loud and unusual noises, excess muscular activity, and pain. Stressful stimuli increase the activity of the sympathetic nervous system (epinephrine and norepinephrin) which can inhibit the milk ejection reflex.


Keywords: Lactation, Milk ejection, Neuroendocrine reflex, Intammary pressure (IMM), Hypothalamus
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How to cite this article:

Bhimte, A., N.S. Thakur, V.P. Maurya and Singh, G. 2018. Neurohormonal Control of Lactation and Milk Let-down in Dairy Animals.Int.J.Curr.Microbiol.App.Sci. 7(7): 970-977. doi: https://doi.org/10.20546/ijcmas.2018.707.117