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FOCUS - on 'Milk' Selection
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<blockquote data-quote="DOC HARRIS" data-source="post: 975717" data-attributes="member: 1683"><p>houstoncutter-</p><p></p><p>With your specialized protocols - you are absolutely correct! </p><p></p><p>My original purpose with the first post on this thread was to stimulate the thinking of everyone on what potential <strong><em>negative genetic factors</em></strong> could be manifest by "blindly" focusing on Milk EPD's. Many University and MARC research has determined that over-emphasis on Milk and Low Calving Ease EPD's <strong><em><u>can</u></em></strong> result in undesirable characteristics in progeny such as lack of masculinity in bulls, reduced thickness in hind quarters, difficult calving due to reduced pelvic measurements in replacement progeny, and the dreaded "Funnel Butts" - which I abhore! Also, lower $EN values seem to be affected by these factors.</p><p></p><p>Terminal producers are less concerned with the genetic reproductive factors involved affecting seedstock producers. That is why registered producers in the '40's, '50's, '60's, and early '70's used high milking Nurse Cows (Holsteins, usually) to abtain maximum size on their sales stock. Then the worm turned, and Continental Breeds stirred up the genetic make up of beef mating protocols and - - the race was on! </p><p></p><p>I would like to encourage all CT Breed Board members to really give deep thought to what the possible negative effects can be by "over-doing" a Single Trait Selection factor - Milk <strong><u>EPD</u></strong> - NOT just "MILK" per se itself!</p><p></p><p>DOC HARRIS</p></blockquote><p></p>
[QUOTE="DOC HARRIS, post: 975717, member: 1683"] houstoncutter- With your specialized protocols - you are absolutely correct! My original purpose with the first post on this thread was to stimulate the thinking of everyone on what potential [b][i]negative genetic factors[/i][/b] could be manifest by "blindly" focusing on Milk EPD's. Many University and MARC research has determined that over-emphasis on Milk and Low Calving Ease EPD's [b][i][u]can[/u][/i][/b] result in undesirable characteristics in progeny such as lack of masculinity in bulls, reduced thickness in hind quarters, difficult calving due to reduced pelvic measurements in replacement progeny, and the dreaded "Funnel Butts" - which I abhore! Also, lower $EN values seem to be affected by these factors. Terminal producers are less concerned with the genetic reproductive factors involved affecting seedstock producers. That is why registered producers in the '40's, '50's, '60's, and early '70's used high milking Nurse Cows (Holsteins, usually) to abtain maximum size on their sales stock. Then the worm turned, and Continental Breeds stirred up the genetic make up of beef mating protocols and - - the race was on! I would like to encourage all CT Breed Board members to really give deep thought to what the possible negative effects can be by "over-doing" a Single Trait Selection factor - Milk [b][u]EPD[/u][/b] - NOT just "MILK" per se itself! DOC HARRIS [/QUOTE]
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