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EPD's What Do They Mean?
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<blockquote data-quote="Brandonm2" data-source="post: 170551" data-attributes="member: 2095"><p>That is NOT true Jean. Genotype (ie the actual genes in an animal) never changes; but phenotype (what we see) absolutely does have an environmental component. An animal can have the genes to be a 3500 lb frame score 9 (if fed heavily and pampered); but if he never receives any supplemental feed and is raised in a less than lush environment he may never come close to that extreme size. That same bull could be a 2400 lb frame 7 on a typical grass farm or a long and skinny cull calve in a bad environment. A lot of heifers out there get stunted and never are the size cow that they could have been. An Angus mama cow in Florida probably won't grow out as well as she would in Montana. How we feed them, the forages they consume, the heat of the summer, the cold of the winter, the level of mineral supplementation etc all effects what we see.....ie the phenotype. Genes are obviously the most important component of phenotype; but phenotype is simply the actual animal (depth of rib, frame, degree of muscling, size of head, length, color, thickness of hair coat, substance of bone, spring of rib, head shape, body condition, etc)</p></blockquote><p></p>
[QUOTE="Brandonm2, post: 170551, member: 2095"] That is NOT true Jean. Genotype (ie the actual genes in an animal) never changes; but phenotype (what we see) absolutely does have an environmental component. An animal can have the genes to be a 3500 lb frame score 9 (if fed heavily and pampered); but if he never receives any supplemental feed and is raised in a less than lush environment he may never come close to that extreme size. That same bull could be a 2400 lb frame 7 on a typical grass farm or a long and skinny cull calve in a bad environment. A lot of heifers out there get stunted and never are the size cow that they could have been. An Angus mama cow in Florida probably won't grow out as well as she would in Montana. How we feed them, the forages they consume, the heat of the summer, the cold of the winter, the level of mineral supplementation etc all effects what we see.....ie the phenotype. Genes are obviously the most important component of phenotype; but phenotype is simply the actual animal (depth of rib, frame, degree of muscling, size of head, length, color, thickness of hair coat, substance of bone, spring of rib, head shape, body condition, etc) [/QUOTE]
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