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Livestock & Forage
Thinking of changing to shedding sheep. Change my mind.
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<blockquote data-quote="SteveHants" data-source="post: 6966661" data-attributes="member: 3380"><p>Just had a look back through some records and there was no year in which I lost (rather than culled out) 30 ewes, 20 seems to be my max. I did have a sh!t year for lamb losses before I had fully twigged to athlemintic resistance in autumn 2 (on a piece of ground which I then stopped bringing lambs onto and ended up just grazing a few rams)</p><p></p><p>That could be due to many things:</p><p>1) A reasonable ammount of mixed grazing keeping worm counts low</p><p>2) Twigging to resistance early on and constantly analysing wormer usage</p><p>3) No flystrike to speak of in the majority of places I had sheep (I had some floodplain stuff once and saw a bit of fly, only ran shedder ewe lambs for replacements on it though.</p><p>4) Commercial flock lambing over a large area - maybe this reduced mismothering?</p><p>5) Not really touching lambs until weaning unless they were in the nucleus flock, I'm semi-convinced the lack of gathering stress helps</p><p>6) Lots of chalk down (commercial flock, nucleus flock was on very wet low ground), good for feet, had shelter etc.</p><p>7) Not a lot of barren ewes - could be Exlana profligacy, could be flushing, could be a lot were young initially who knows?</p><p>8) Actually having more replacements available than the theoretical 75 in every year I did it, because, in reality I often had more ewes than 50% and rearing percentages higher than 160%, especially in my highest performing nucleus ewes, but I like to underestimate, which is why I quote 160%</p><p></p><p>I'd very much like to do it again and analyse it further.</p><p></p><p>I think my "experiment" could be adapted to suit different situations, your nucleus flock could be a lot bigger (say, 30-35%) and you could run a sweeper to select for fecundity....</p><p></p><p>Edited to add: It is now apparent that I've been marking work on reflective processes, because I'm doing it here, rather than actually marking the work..... <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite20" alt=":ROFLMAO:" title="ROFL :ROFLMAO:" loading="lazy" data-shortname=":ROFLMAO:" /></p></blockquote><p></p>
[QUOTE="SteveHants, post: 6966661, member: 3380"] Just had a look back through some records and there was no year in which I lost (rather than culled out) 30 ewes, 20 seems to be my max. I did have a sh!t year for lamb losses before I had fully twigged to athlemintic resistance in autumn 2 (on a piece of ground which I then stopped bringing lambs onto and ended up just grazing a few rams) That could be due to many things: 1) A reasonable ammount of mixed grazing keeping worm counts low 2) Twigging to resistance early on and constantly analysing wormer usage 3) No flystrike to speak of in the majority of places I had sheep (I had some floodplain stuff once and saw a bit of fly, only ran shedder ewe lambs for replacements on it though. 4) Commercial flock lambing over a large area - maybe this reduced mismothering? 5) Not really touching lambs until weaning unless they were in the nucleus flock, I'm semi-convinced the lack of gathering stress helps 6) Lots of chalk down (commercial flock, nucleus flock was on very wet low ground), good for feet, had shelter etc. 7) Not a lot of barren ewes - could be Exlana profligacy, could be flushing, could be a lot were young initially who knows? 8) Actually having more replacements available than the theoretical 75 in every year I did it, because, in reality I often had more ewes than 50% and rearing percentages higher than 160%, especially in my highest performing nucleus ewes, but I like to underestimate, which is why I quote 160% I'd very much like to do it again and analyse it further. I think my "experiment" could be adapted to suit different situations, your nucleus flock could be a lot bigger (say, 30-35%) and you could run a sweeper to select for fecundity.... Edited to add: It is now apparent that I've been marking work on reflective processes, because I'm doing it here, rather than actually marking the work..... :ROFLMAO: [/QUOTE]
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Thinking of changing to shedding sheep. Change my mind.
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