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Easycare Tup Lambs
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<blockquote data-quote="Global ovine" data-source="post: 7108527" data-attributes="member: 493"><p>In NZ little difference is noticed between lambing ease of Sufftex compared to Suffolk because the majority of flocks are of Romney or Romney derivatives (crosses and composites) which have large pelvises and many decades selecting against birthing difficulties. However, NZ's fine wool industry is based on Merinos and their derivatives which have smaller pelvic apertures to their body weight than the Romney types and because of the harder environmental conditions of dry hard hill and mountain pastures of fine wool flocks they tend to have much lower lambing %, hence the majority of lambs are born as singles. On these flocks, the Suffolk breed predominates as a terminal sire because;</p><ul> <li data-xf-list-type="ul">NZ Suffolks have finer heads and legs, hence faster birth than Sufftex due to no Texel influence.</li> <li data-xf-list-type="ul">NZ Suffolks have faster growth rate to weaning generally, but could be negated by dressing out %.</li> <li data-xf-list-type="ul">NZ Suffolks have lower birth weights as the Texel influence advances gestation by up to a week (longer in the oven to grow bigger).</li> <li data-xf-list-type="ul">NZ Sufftex lambs have a bit more hybrid vigour (3 way cross out of a maternal breed ewe) also influencing slightly heavier birth weights.</li> <li data-xf-list-type="ul">NZ Sufftex is a bit more resilient to bad weather after birth, due to longer birth coat, higher birth weight and the Texel vigour component.</li> </ul><p>Sufftex is by far now the most popular terminal sire in NZ.</p><p></p><p>The choice between these two options should be based on the ease of lambing of the ewe flock to be mated and the proportion of singles expected. Very little difference would be noticed at 160s% lambing where only a third of lambs are born as singles and if ewes are bred for easier birthing.</p></blockquote><p></p>
[QUOTE="Global ovine, post: 7108527, member: 493"] In NZ little difference is noticed between lambing ease of Sufftex compared to Suffolk because the majority of flocks are of Romney or Romney derivatives (crosses and composites) which have large pelvises and many decades selecting against birthing difficulties. However, NZ's fine wool industry is based on Merinos and their derivatives which have smaller pelvic apertures to their body weight than the Romney types and because of the harder environmental conditions of dry hard hill and mountain pastures of fine wool flocks they tend to have much lower lambing %, hence the majority of lambs are born as singles. On these flocks, the Suffolk breed predominates as a terminal sire because; [LIST] [*]NZ Suffolks have finer heads and legs, hence faster birth than Sufftex due to no Texel influence. [*]NZ Suffolks have faster growth rate to weaning generally, but could be negated by dressing out %. [*]NZ Suffolks have lower birth weights as the Texel influence advances gestation by up to a week (longer in the oven to grow bigger). [*]NZ Sufftex lambs have a bit more hybrid vigour (3 way cross out of a maternal breed ewe) also influencing slightly heavier birth weights. [*]NZ Sufftex is a bit more resilient to bad weather after birth, due to longer birth coat, higher birth weight and the Texel vigour component. [/LIST] Sufftex is by far now the most popular terminal sire in NZ. The choice between these two options should be based on the ease of lambing of the ewe flock to be mated and the proportion of singles expected. Very little difference would be noticed at 160s% lambing where only a third of lambs are born as singles and if ewes are bred for easier birthing. [/QUOTE]
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