Archive for the 'Lambing: Twins' Category

Flushing Soay ewes: A correction

Sunday, October 5th, 2008

Well I’m embarrassed.  When I put together the chart of grain amounts we feed our ewes to enhance twinning, I included amounts in both ounces and cups, most likely because I am wasting a brain cell remembering an old ditty from home ec class about measuring the dense ingredients (butter, for example) in baking:  “a pint’s a pound the world ’round.”

Not so with livestock grains; the equivalency does not work.

The sheep books I have read, and the chief shepherd here at Saltmarsh Ranch, measure in ounces.  For those of you who relied on the cup measures in my posting last month about flushing, I apologize.  You will find a corrected chart in the original post.

Hanging my head for now …

 

Want more Soay twins? Try flushing your ewes

Tuesday, September 9th, 2008

No, I am not referring to your trusty Kohler or Toto.  Flushing is shepherd lingo for increasing a ewe’s nutrition in the weeks leading up to breeding in order to trick the ewe into releasing a larger number of eggs.  Most of the sheep literature we have read, and a number of Soay breeders we know, report higher multiple birth rates if flushing is part of the pre-breeding regime.  The concept is straightforward:  ewes ovulate more readily and release more eggs if their bodies sense that times are good, that food is plentiful, and so it seems a good opportunity to raise a larger litter.  As I understand it, commercial breeders use flushing routinely.  They must have a high ratio of multiple births to make sheep-raising financially viable.

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Here is how it works from the shepherd’s standpoint.  Two weeks before you put your breeding groups together, start feeding your breeding ewes a little something extra along with their normal diet of grass or hay.  We use a product called “ewe/lamb ration” from our favorite feed store.  It is 14 % crude protein.  COB (corn, oats, barley) or other pelleted feed with 9 % crude protein is another alternative.  If you don’t mind the hassle of soaking beet pulp pellets (also 9% crude protein) every day, you can use that as well.

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The goal is a gradual and modest increase in the ewes’ “nutritional plane” — to boost them slightly from where they start.  If they are already fat, flushing probably will not help and it might be counterproductive, because really fat ewes are reported to have lower fertility rates.  But if your ewes, like ours, are starting to complain about the quality of the late-summer grass in your fields, or you are down to the last few sorry bales of last year’s hay, the increased nutrition should have the desired effect. 

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We start with 2 ounces per ewe per day and gradually increase that amount to 4 ounces by the end of the first week.  You do not want to change your ewes’ diet abruptly for at least two reasons:  their rumens need to adjust to the change in composition of the material to be digested, and apparently if the new stuff passes unprocessed into the intestines, the ewe is at risk for scours.  In other words, ramp up rather than change abruptly.   

How do these numbers play out?  Here are a few examples:

# ewes     Days 1&2      3&4              5&6            7                   8-14

1                      2 oz       2.5 oz           3 oz             3.5 oz            4 oz

4                      8 oz       10 oz            12 oz           14 oz             1 lb 

8                      1 lb        1 lb 4 oz       1 lb 8 oz      1 lb 12 oz       2 lb   

Stay at the increased level for a second week (days 8-14), then put your your ram(s) with your ewe(s) for breeding.  On the day you begin breeding, start tapering off the goodies gradually until you quit supplementing them at all after two more weeks.  In other words, four weeks total of supplementation, gradually up, gradually down. 

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For the same reasons flushing is designed to increase the number of ova released, it also encourages the ewes to start ovulating a little sooner, which may put them in sync, and that in turn may concentrate your lambing so it does not drag on for weeks.

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Most books recommend a second trick to get your ewes ready for action, i.e., getting them to cycle well.  If your pasture situation and prevailing winds allow it, place your ewes near or at least downwind from the rams.  The smell of the rams (and believe me, they smell at this time of year) helps trigger cycling, as does the shortening of the days.  If you can put your ewes in a location adjacent to your rams – a stout fence and a view block separating them – all the better.  That way, the rams also can smell the ewes and get charged up.  But – and this is crucial, you must have sturdy fence and you really should use view blocks.

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Will you agree with me that these pictures of some of our 2008 twins provide yet another reason to flush your ewes — the sheer pleasure of looking at the little ones together?

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If you flush your ewes, you’d best get your lamb kit ready because before you know it, lambs will begin arriving two by two to entertain you. 

For now … 

 

A Bummer Soay Lamb: Lessons Learned

Wednesday, April 23rd, 2008

It was a dark and stormy morning last Thursday.  I was in town and Steve was running the lambing operation solo.  Delighted to find Fulmar with a big (5 lbs, 4 oz) ewe lamb in the area reserved for pregnant ewes, he jugged them and then went about the normal routine of quieting the din in the Maternity Ward proper with several flakes of fresh hay and a little beet pulp for the nursing mothers.

And then all the wheels came off.  There, amidst the nursing moms and their big three-week old lambs, was a little bitty brown thing with no distinctive markings and no ear tag – a newborn lamb.  But whose? And where was the mother?  Someone was where she did not belong.  Either the mother had panicked, jumped out of the adjacent lambing area, and lambed instead with the 3 dozen mothers and 4 dozen lambs in the comparatively chaotic main part of the Maternity Ward and lost her lamb there.  Or, the lamb had been born in the lambing area but then crawled out.  But which ewe and where was she?  Was Steve really going to have to lift up 3 dozen tails to see which ewe besides Fulmar had lambed overnight? 

Step one:  count noses in the pregnant ewe area.  Sure enough – one short.  The most likely candidate to have had a really little lamb was Gweek, and Steve did not see her.  Thinking he would find her by carrying the little lamb around the Maternity Ward sort of like a sniffing dog at the airport looking for drugs in luggage, Steve was hoping the lamb’s mother would smell her “work” and follow along to a jug.  Lo and behold, that is exactly what happened.  When Steve picked up the lamb, all the ewes but one scurried away, and only the presumptive Gweek paid any attention to the little lamb in Steve’s blue-gloved hands.  She sniffed and gurgled at the baby and dutifully toddled along right into a jug, where she (the ewe) and the little lamb proceeded to nuzzle and slurp approvingly at each other, sounds that always reassure a shepherd that all is well.  Steve’s sigh of relief probably could have been heard far beyond the friendly confines of the Maternity Ward.  Only the ritualistic checking of the ewe’s ear tag remained (remember this is a lab scientist who used to keep meticulous records of several hundred of his tagged lab mice).  I can only imagine the sound of Steve’s jaw dropping open when he discovered that the little lamb’s “mother” was not Gweek at all, but rather Tolcarne, who already had a three-week old lamb!  And not just any lamb, but one with such distinctive markings that no mother with even minimal visual acuity could mistake her for someone else.  (Never mind the universally accepted common wisdom that any ewe worth her salt can recognize her lamb 100% of the time by smell alone).  Look at Tolcarne’s lamb Buttermere.  Does she look like a little bitty nondescript brown sheep?

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 What … on … earth … was … going … on?

See what I mean about wheels coming off?  Mind you, I was still in town at this point, calmly going about my non-sheep business, while all this was taking place.

Back to the pregnant ewe pen went Steve to find Gweek, who he persisted in believing was the lamb’s mother.  With no small amount of relief, Steve realized he had miscounted by one and all the pregnant ewes were in fact accounted for, including Gweek.  And that, faithful readers, left only one explanation: Fulmar had twinned, and the little one had wandered off.  A sense of deja vu crept crept into Steve’s consciousness.  The same thing happened to us last year with another little bitty lamb, Otley, who crawled out of the same kind of opening — the slot between the bars of a Shaul panel – only to be found lost and wandering around the Maternity Ward bellowing like a miniature hippo.  You would think we would learn, eh?   Would you be surprised to learn that as of this moment, there are no more slots for tiny lambs to crawl through?  Maybe.

But I digress.  Fortunately, this year’s little bitty lamb was warm and clearly had managed to get a meal off Fulmar or Tolcarne or somebody, so Steve caught the little one, took her temperature just to be sure, and put her in with Fulmar and the other twin while he pondered how he could possibly figure out whether the little one had gotten any colostrum from Fulmar during the night.  Fulmar, however, was not about to buy into the proposed new arrangement.  She wanted nothing to do with this unfamiliar creature and she proceeded to bash the poor unsuspecting little lamb against the plywood sides of the jug.  Ack!  We never want to lose a lamb, but especially not at a point where we are behind in the lamb gender lottery.

Armed with the knowledge that a ewe’s milk is always the first choice for a lamb and so is living with sheep rather than with people, Steve considered whether to try to graft the little one (since named Patterdale, which beats referring to her as “hey ewe”) onto Tolcarne on a permanent basis.  Even though Tolcarne seemed willing enough, it nonetheless seemed too risky, especially given the disparity in age between Tolcarne’s own lamb and the proposed adoptee, and also the fact that Steve had no idea whether Patterdale had gotten any colostrum.  And so, for the first time in our tenure as shepherds, we had ourselves a bottle baby. 

From then on, the process has taken on a certain regularity using well-established guidelines for dealing with bummer lambs.  Most importantly, we needed to get colostrum into Patterdale immediately.  She was approaching the 12-hour-old point after which her system would no longer absorb the critical antibodies that will protect her for several weeks until her own immune system kicks in.  Fortunately for her, in the rare cases we have lost a lamb, Steve has been diligent about milking out the ewe beginning right away and continuing for about a week, in order to have an ample supply of frozen milk for just such occasions.   In this case, Steve was able to strip some milk from Fulmar and boost Patterdale with another ewe’s frozen first milk as well.  Once Patterdale had her furnace running, Steve quickly dipped her navel, tagged her (at last!), and off to our house she went. 

Patterdale is pleased to report that her home-away-from-home, a wire dog crate lined with clean straw and a little fresh hay, and seated on the cement floor near our breakfast nook, was quite satisfactory for the first few days.

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The crate continues to be her bedroom, but she spends her days in a “run” composed of a leftover set of wire puppy panels and lined with an old college dormitory bedspread in a lovely shade of ovine brown plaid.

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Relying on our references of choice, Storey and Parker, we set up a feeding regime to meet the twin goals of getting Patterdale growing, but also avoiding scours by overfeeding.  She only weighed 2 pounds 4 ounces at birth (even smaller than the sainted Miss Otley), so the temptation to stuff her with ewes’ milk (never cows’ milk!) was strong.

Here’s a really short course in bottle feeding an animal the size of a very small Soay lamb, adaptable to your circumstances:  Day one, 2-4 ounces of colostrum if you have it, plus 1-2 ounces more of milk — no more.  Best to administer one ounce (that’s two tablespoons) at a time.  Days 2-6, between 6 and 12 ounces of milk total, depending on the lamb’s enthusiasm for eating.  Second week, 12 ounces or so per day.  If the lamb is getting milk but still hollers, it is probably thirsty.  Feed plain water in the bottle or heavily dilute some milk.  If the lamb starts to scour (diarrhea), cut back on milk but dilute it so the lamb will not dehydrate.  The warnings about scours in Storey and Parker are surprisingly strong.  One of them says bluntly that you can kill a bottle-fed lamb by overfeeding it, so err on the side of underfeeding it.

We have not yet faced the issue of when and how to re-unite Patterdale with her twin, mother, cousins and aunts in the Maternity Ward.  Not surprisingly, we have grown quite attached to our little house companion and Steve delights in sitting in her playpen on a chair scavenged from my kindergarten classroom back in rural Iowa that lets him get closer to her without having to sit his middle-aged carcass on a cement floor.  Molly, our border collie, sits remarkably quietly on the other side of the cage, enjoying the sight of a rescued lamb frolicking around the huge sandals belonging to the gentle giant.

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Just a minute, you may ask, haven’t you left out a critical part of this report?  What was going on with Tolcarne?  What on earth possessed her to adopt the little lost soul?  Almost never does a lamb successfully poach off a ewe who is not her mother.  Remember Otley, the lamb who wandered off last year?  Only readers with truly impressive memories will recall that Tolcarne is in fact Otley’s mother, so for Tolcarne, perhaps there was a sense of “been there, done that” this time.  Perhaps Tolcarne remembered her plight last year and was simply returning the favor. On the other hand, shepherds far more experienced than we are long have cautioned that, however altruistic sheep may appear, they are not rocket scientists.  Attributing both long-term memory and a social conscience to Tolcarne seems a bit of a stretch.  We simply will never know why she, of all the ewes, took Patterdale under her care.  I guess that’s the beauty of shepherding – never a dull moment.

For now …

Twin Lambs: the Multi-tasking Soay Ewe in Action

Saturday, April 14th, 2007

Quite by accident, I found myself a couple of days ago in the Maternity Ward with my camera just as Sandpiper started to lamb. Our first year as shepherds I dutifully photographed every birth, but no more. A person can get worked up about a still shot of an amniotic-sac-covered lamb just so many times in her life. But soon after Sandpiper’s first lamb arrived, it became clear another one was on the way, so I started clicking, and I am glad I did. Here is Sandpiper nudging her first lamb back towards her udder for the all-important initial meal of colostrum.

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Not much news there; any self-respecting ewe will clean off her lamb and get it eating as soon as possible so it will stay warm and thrive.

But look again at Sandpiper’s back end. See those little black and white things sticking out of her vagina? Those are lamb #2’s front hooves on their way out of the birth canal. Is Sandpiper paying the slightest bit of attention? Nope, she’s too busy taking care of lamb #1.  

Next picture, less of lamb #2 shows here, probably between contractions, but Sandpiper seemingly takes no notice in any case, no matter what her body tells her is about to happen — again. She is still busy with lamb #1 and determined to get him jump-started before she turns her attention to her second lamb.

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In the next photo, still no lamb #2, so Sandpiper has just enough time to get lamb #1 feeding.

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Actually, even though lamb #2’s hooves are back out in the next picture, Sandpiper stays on task and finishes licking the membranes off lamb #1.

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And it’s a good thing Sandpiper stayed focused, because by the time I could take the next picture, the second lamb was on the ground. Lamb #2 is the yucky-looking slimy black mass in this picture.

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Now, finally, Sandpiper is satisfied that lamb #1 can fend for himself for a few minutes, and she turns her attention to lamb #2 and starts the cleaning-licking-nudging process all over again.

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Just a few minutes later, the little family of three is all cleaned up and ready to go.

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As you know from reading my last post about lamb games, lamb #2 (Cascabel) actually wandered off about this time and Llucy had to fetch him back. In this picture, you see Cascabel turning away from Sandpiper and getting ready to strike out on his own.

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Why he did that we will never know. We do not see this kind of wandering very often in a newborn. The ewes each have a unique gurgly-meowing-baa sound that only the “right” lamb responds to, and the lambs each have a slightly different baa sound as well. Whatever possessed Cascabel to go exploring, with Llucy’s help he was reunited with his mother and all was well and remains well. But let me tell you, once Sandpiper finished her double lambing, she chowed into the hay like there was no tomorrow. There is tomorrow, however, and it will come soon enough for the pregnant ewes who have yet to show off their multi-tasking skills.

 For now …