Effects, Study, Procedures, Treatment, Report, Uses
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placenta is the membrane that connects the fetus with the dam. The
button like structures of the placenta, connect with the caruncles of
normal calving, the placenta will be expelled within 30minutes to 8
hours. If the placenta has not been released after 12 hours, the cow
will have a condition known as retained placenta.
placenta is an active endocrine organ tat provides a site for nutrient
exchange, facilitates waste removal from the fetus, and provides an
immunological barrier to both the maternal immune system and potential
placenta is retained in up to 20% of the cows that abort and infertility
may be a sequela. Some serovars can cause sudden decreased milk
removal of the placenta is not advised. The uterine walls are thin and
fragile, and manipulation of the uterus may cause harm. Trimming out the
placenta may decrease the dirt caught by the placenta, however the
pulling force of the placenta's weight will be lost.
placenta serves as the functional unit of exchange between the maternal
and fetal systems.If the placenta is dragging on the ground it should be
cut off at the level of the hocks to prevent it from being stepped on by
the cow and torn off.
goal in any treatment of retained placentas is to return the cow's
reproductive tract to a normal state as quick as possible.
generally two methods of managing retained placenta when no systemic
involvements are present- manual removal and natural separation. Manual
removal has long been a common practice but should not be used because
of possible injury to the delicate lining of the uterus.
of Reprocine which is the latest treatment available in the UK. It
contains the synthetic hormone carbetocin and is given to cows by
injection. It stimulates uterine motility, contracting down the uterus
and thereby helping to expel the retained placenta.
recent research on retained placenta, the most common recommendation is
to allow the placenta to separate naturally with or without the use of
placenta is defined as the failure to pass all or part of the placenta
from the uterus within 24hr of calving. Retained placenta or metritis
requiring systematic therapy occurs in 11-18% of calvings.
for isolating and purifying immuno-modulating polypeptide from cow
placenta, which is characterized by using steps of anion exchange
chromatography, gel exclusion chromatography and reverse-phase high
performance liquid chromatography to isolate and purify
immuno-polypeptide from cow placenta, identifying its activity of
stimulating lymphocyte proliferation in vitro by MTT method.
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