Effect of Local Stimulation of One Quarter on Milk Production and Milk Components

The existence of local udder regulatory mechanisms involved in the regulation of milk production was demonstrated. Because the four quarters of the udder are independent, yet share a common environment, the experiment was designed to give one quarter extra stimulation by hand-milking while the other...

Full description

Saved in:
Bibliographic Details
Published in:Journal of dairy science 1990-04, Vol.73 (4), p.970-974
Main Authors: Svennersten, Kerstin, Claesson, Carl Olof, Nelson, Lennart
Format: Article
Language:English
Subjects:
Animals
Biological and medical sciences
BOVIN LAITIER
Cattle - physiology
COMPOSICION
COMPOSITION
COWS
DAIRY CATTLE
ESTIMULO
Female
Food industries
Fundamental and applied biological sciences. Psychology
GANADO DE LECHE
GLANDE MAMMAIRE
GLANDULAS MAMARIAS
hand-milking
Lactation
Lactose - analysis
LAIT
LECHE
Lipids - analysis
machine-milking
MAMMARY GLANDS
Mammary Glands, Animal - physiology
Mammary Glands, Animal - secretion
MILK
Milk - analysis
Milk and cheese industries. Ice creams
MILK PRODUCTION
Milk Proteins - analysis
milk yield
MILKING
ORDENO
PRODUCCION LECHERA
PRODUCTION LAITIERE
regulatory mechanisms
STIMULATION
TRAITE
udder stimulation
VACA
VACHE
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The existence of local udder regulatory mechanisms involved in the regulation of milk production was demonstrated. Because the four quarters of the udder are independent, yet share a common environment, the experiment was designed to give one quarter extra stimulation by hand-milking while the other quarters were machine-milked. A difference in milk production was found, proving the existence of local mechanisms. The largest differences were during evening milking with an increased production in the hand-milked quarter. The machine-milked quarters did not increase their production. The increased production was probably due to enhanced activity in the secretory cells, induced by some factor produced or activated locally in the udder.
ISSN:0022-0302
1525-3198
DOI:10.3168/jds.S0022-0302(90)78754-1