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Normal Birth - What to
Expect
© Kathy Baker Oct 01 2005
Most ewes exhibit changes in their
behaviour as they get closer to lambing. If you are able to
observe your flock, you may notice the early signs a day or two
before lambing. Remember that not all ewes provide clear
signals. First time lambers and even experienced ewes may surprise
you with lambs without any warning. Over time you will notice subtle
behaviour changes and will also get to know the birthing style of
the ewes in your flock. Remember that well prepared, healthy
Shetland ewes should be expected to deliver on their own. Try
not to interfere too early.
Try not to disturb, interrupt or
move ewes preparing to lamb, during labour or during the bonding
process after the lamb is on the ground.
The following are signs that
your ewe is preparing to lamb.
-vulva looks larger, pink
and soft
-tail is held up
-lambs drop within the ewe leaving sunken areas in front of hips
-udder may fill and firm up
-staring or gaze into distance
-mucous plug at cervix is released and you may notice a bit of
mucous discharge from the vulva (12-14 hrs before Birth)
-ewe may not want to eat on day of delivery
-ewe is restless
-seeking privacy and moving away from flock
-defending her private space, aggressively pushing other ewes away
-pawing at the ground or preparing a nest in the straw for delivery
-ewe may lie down and get up frequently
-biting at her sides
-ewe is having early uterine contractions that serve to dilate the
cervix over a period of 1-2 hrs.
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Onset of Labour
-contractions become more forceful, water bag enters the birth
canal
-ewe may squat to try to urinate frequently
-ewe begins forceful contractions. she may lie down or stand or do a
bit of both
-ewe may lick or curl lips, strain neck upwards and become more
vocal as she pushes
-waterbag should be visible with in 30-45 minutes of hard
contractions (If not see Problems)-the water
bag or amniotic sac should look basically clear, perhaps a bit
opaque. This is normal. If the fluid is dark or
greenish, it is likely that the lamb is in distress and has passed
meconium or the first bowel movement into the fluid filled
sac. (Consider pulling the lamb, clearing the sac from the nose area
and ensuring the lamb is breathing. (See Problems)
-ewe may begin to call to her lambs softly
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| Delivery of the Lamb -labour continues and lamb is
generally delivered with in 30-45 minutes of the water bag
presentation/breaking
(first time lambers often take longer, experienced ewes may be
faster
-water bag usually breaks, ewe licks and sniffs the area where it
broke
-normal presentation means that the lamb comes out with both
front feet first, with the nose resting on the legs or just off to
the side of the legs.
Picture provided by Cynthia Caillagh |
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| -ewe continues to push
-contractions frequent
-some ewes may get up and lick/sniff or look to see if the lamb is
on the ground yet
-after the head is out, the rest of the body usually follows
easily
Picture provided by Cynthia Caillagh |
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| -shoulders out -the lamb should be delivered with in 30-45
minutes of the water bag presentation/breaking
Picture provided by Cynthia Caillagh |
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-body follows
-some ewes stand, don't worry if the lamb falls to the ground
-the lamb usually struggles and breaks the bag
-with the lamb on the ground the ewe will stand, turn and pull off
the amniotic sac. this helps the ewe bond with the lamb and
her licking encourages the lamb to move
-the lamb struggles, shakes it's head trying to clear the
fluid and takes it's first breath
-occasionally the lamb is delivered with the water bag intact.
Generally the struggling lamb and the licking of the ewe will break
the bag so the lamb can breathe. If you are close by and
concerned about the length of time this is taking just tear the bag
open yourself leaving the lambs nose free. Move away letting
the ewe finish her jobPicture provided by Cynthia
Caillagh |
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-within 5 minutes the lamb is usually working on getting to it's
feet and looking for the udder. The first steps are wobbly.
This is normal. If the lamb is in no danger of hypothermia, no
need to interfere.
-the lamb needs to find the udder to get colostrum, the first rich
milk from the ewe. It provides a high energy boost. The lamb
should drink within the first 30 minutes of delivery. If you
are unsure if the lamb has nursed see the Problems link below.
Picture provided by Cynthia Caillagh |
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| Expulsion of the afterbirth is the final stage of the birth
process. The ewe usually eats the afterbirth. If the
afterbirth is not expelled see Problems |
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-the lamb and siblings will sleep much of the time in the first 24
hrs.
-they will get up and nurse, jump about for a time then sleep again.
-the lambs mouth and ears should feel warm
-you should be able to see the lamb nurse and the lamb's belly
should look full and round
-a content, well fed lamb is quiet
-if you disturb a sleeping lamb, it should get up, often will
stretch and then look to nurse
-a lamb that is constantly crying or becoming chilly or lethargic
is usually hungry and cold. See Problems.
Picture provided by Cynthia Caillagh |
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REFERENCES
| Lawson, Laura Managing Your Ewe
and her Newborn Lambs , LDF Publications, Culpepper VA, 1993,
ISBN 0-96-33923-1-X |
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