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Maternal Calving Ease - attn: Aero
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<blockquote data-quote="Jeanne - Simme Valley" data-source="post: 654761" data-attributes="member: 968"><p>In another thread Aero commented:</p><p></p><p></p><p>Here's an article I just received from the American Simmental Assn:</p><p>"Multi-breed calving ease EPDs on the horizon: Calving ease, both direct and maternal, and stayability have never been multi-breed traits. ASA has only had the technology to evaluate these traits on a single-breed basis because they are complicated by both heterosis and other-breed-base EPDs. Dr. Shafer has spent considerable time working on the development of multi-breed CE and MCE, and we are hoping to present the first CE and MCE EPDs resulting from our next genetic evaluation in June. </p><p></p><p>Before you make A.I. matings this spring, you might consider reviewing the CE and MCE EPDs and percentile ranks of other breeds you may be using. For example, Angus CE and MCE EPDs range from approximately zero to +12 or +13, and average 6 for CE and 7 for MCE. The U.S. MARC research and ASA's Heifer Calving Ease Programs would "translate" these Angus averages to approximately +14 ASA CE and -5 ASA MCE. Therefore, if you have been using average Angus bulls for CE and MCE the resulting SimAngus progeny may be well above average Simmental CE and significantly below average Simmental MCE. </p><p></p><p>The point of this is to encourage you to be just as vigilant searching for superior traits in other breeds, as you are when you select outstanding Simmental sires for CE and MCE EPDs. The new multi-breed CE and MCE EPDs will reflect the quality of genes you brought in from other breeds. We encourage you to "do your homework" before you make the matings. "</p><p></p><p>I will never say I totally understand EPD's but I do strongly believe in using them.</p><p>So, at the present, the Simmental MCE AVERAGE is +2.3 and looks like the Angus average is about +7 - but, this article indicates the +2.3 is supposed to be easier calving than the Angus +7.</p><p></p><p>So, the point is, you have to USE the EPD's according to your own breed.</p><p>The Simmental direct CE average is +6.5, and if a bull has a +10 CE, ASA recommends him to be used on British heifers. So, like I said, you need to know your EPD's for your own breed.</p></blockquote><p></p>
[QUOTE="Jeanne - Simme Valley, post: 654761, member: 968"] In another thread Aero commented: Here's an article I just received from the American Simmental Assn: "Multi-breed calving ease EPDs on the horizon: Calving ease, both direct and maternal, and stayability have never been multi-breed traits. ASA has only had the technology to evaluate these traits on a single-breed basis because they are complicated by both heterosis and other-breed-base EPDs. Dr. Shafer has spent considerable time working on the development of multi-breed CE and MCE, and we are hoping to present the first CE and MCE EPDs resulting from our next genetic evaluation in June. Before you make A.I. matings this spring, you might consider reviewing the CE and MCE EPDs and percentile ranks of other breeds you may be using. For example, Angus CE and MCE EPDs range from approximately zero to +12 or +13, and average 6 for CE and 7 for MCE. The U.S. MARC research and ASA's Heifer Calving Ease Programs would "translate" these Angus averages to approximately +14 ASA CE and -5 ASA MCE. Therefore, if you have been using average Angus bulls for CE and MCE the resulting SimAngus progeny may be well above average Simmental CE and significantly below average Simmental MCE. The point of this is to encourage you to be just as vigilant searching for superior traits in other breeds, as you are when you select outstanding Simmental sires for CE and MCE EPDs. The new multi-breed CE and MCE EPDs will reflect the quality of genes you brought in from other breeds. We encourage you to "do your homework" before you make the matings. " I will never say I totally understand EPD's but I do strongly believe in using them. So, at the present, the Simmental MCE AVERAGE is +2.3 and looks like the Angus average is about +7 - but, this article indicates the +2.3 is supposed to be easier calving than the Angus +7. So, the point is, you have to USE the EPD's according to your own breed. The Simmental direct CE average is +6.5, and if a bull has a +10 CE, ASA recommends him to be used on British heifers. So, like I said, you need to know your EPD's for your own breed. [/QUOTE]
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