Menu
Forums
New posts
Search forums
What's new
New posts
New media
New media comments
New profile posts
Latest activity
Media
New media
New comments
Search media
Members
Current visitors
New profile posts
Search profile posts
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Forums
Cattle Boards
Beginners Board
Help Please !
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support CattleToday:
Message
<blockquote data-quote="Theodore W." data-source="post: 267413" data-attributes="member: 4644"><p>I'm no cattle man,but I happen to be a biologist knowing some things about inbreeding and its dangers. but well it's hard to say how bad inbreeding depression is in practice in general.</p><p></p><p>That really depends on your actual case, but common aspects are:</p><p>0</p><p>1. Reduced fertility or fertility problems, (retained placenta is an equine example). </p><p>2. Immune system may work less well (at least against some diseases).</p><p>3. Your entire herd may have the same weakness in its immune system, increasing the chance of DISASTER-infections, even if not lethal .</p><p>4. You may be cropping up some (less obvious) bad genetic variants.</p><p>5. Reduced performance is not just possible, but even not unlikely, but if the performance is "simple" one can usually well prevent that for quite some time by just selecting for performance.</p><p></p><p>It's more or less the opposite of what you get when crossing two breeds.</p><p></p><p>That may run out of hand and get really, really serious. OK, normally speaking line breeding in cattle is quite limited and the negative effects can often be countered in part by a cross to an outsider (which may be a linebred animal itself) or even to another branch of the same line. Line breeding is something you should NOT do with a founder population or in herds bred also with an eye to rare (or foundation) breed conservation. On an incidental base it does not hurt the more common breeds much, and if you get some awful monster, well in that case you know you were having a problem already .</p><p></p><p>Theodore</p></blockquote><p></p>
[QUOTE="Theodore W., post: 267413, member: 4644"] I'm no cattle man,but I happen to be a biologist knowing some things about inbreeding and its dangers. but well it's hard to say how bad inbreeding depression is in practice in general. That really depends on your actual case, but common aspects are: 0 1. Reduced fertility or fertility problems, (retained placenta is an equine example). 2. Immune system may work less well (at least against some diseases). 3. Your entire herd may have the same weakness in its immune system, increasing the chance of DISASTER-infections, even if not lethal . 4. You may be cropping up some (less obvious) bad genetic variants. 5. Reduced performance is not just possible, but even not unlikely, but if the performance is "simple" one can usually well prevent that for quite some time by just selecting for performance. It's more or less the opposite of what you get when crossing two breeds. That may run out of hand and get really, really serious. OK, normally speaking line breeding in cattle is quite limited and the negative effects can often be countered in part by a cross to an outsider (which may be a linebred animal itself) or even to another branch of the same line. Line breeding is something you should NOT do with a founder population or in herds bred also with an eye to rare (or foundation) breed conservation. On an incidental base it does not hurt the more common breeds much, and if you get some awful monster, well in that case you know you were having a problem already . Theodore [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Cattle Boards
Beginners Board
Help Please !
Top