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Health & Nutrition
Poor udder attachment in heifers
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<blockquote data-quote="inyati13" data-source="post: 991599" data-attributes="member: 17767"><p>Form, structure and function in animals is dictated almost w/o exception by genetics. I cannot take credit for this concept, it has been discussed since Gregor Mendel in the mid-19th century started investigating inheritance. That is not to say that the environment cannot affect the form of a part of the body, i.e., a blacksmith's rough, callosed hands because of the work they perform day after day. But a blacksmith's hands take the basic form dictated by the information packed in his/her genome. I don't want to start a big debate because that has already occurred by people who study this for their entire life and it is a fundamental concept in the science of genetics. The safest answer to your question would be to say "there is genetic material in the genome of this cow that made her predisposed to the udder form and function that you have observed." As dun said, it may have come from anywhere in her ancestory. It may not appear again for 10 generations, that is all speculation.</p><p></p><p>I want to state why I said "almost w/o exception." An animals form, structure, and function as dictated by its inherited material may be altered, damaged, etc. by disease or injury. For example, if a cow gets into barbed wire and cuts an udder off; form and function as dictated by what was in the genome is now the result of injury. Likewise, mastitis will alter the form and function of the mammary gland and thus, form and function is now the result of the disease.</p></blockquote><p></p>
[QUOTE="inyati13, post: 991599, member: 17767"] Form, structure and function in animals is dictated almost w/o exception by genetics. I cannot take credit for this concept, it has been discussed since Gregor Mendel in the mid-19th century started investigating inheritance. That is not to say that the environment cannot affect the form of a part of the body, i.e., a blacksmith's rough, callosed hands because of the work they perform day after day. But a blacksmith's hands take the basic form dictated by the information packed in his/her genome. I don't want to start a big debate because that has already occurred by people who study this for their entire life and it is a fundamental concept in the science of genetics. The safest answer to your question would be to say "there is genetic material in the genome of this cow that made her predisposed to the udder form and function that you have observed." As dun said, it may have come from anywhere in her ancestory. It may not appear again for 10 generations, that is all speculation. I want to state why I said "almost w/o exception." An animals form, structure, and function as dictated by its inherited material may be altered, damaged, etc. by disease or injury. For example, if a cow gets into barbed wire and cuts an udder off; form and function as dictated by what was in the genome is now the result of injury. Likewise, mastitis will alter the form and function of the mammary gland and thus, form and function is now the result of the disease. [/QUOTE]
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