Forums
New posts
Forum list
Search forums
What's new
New posts
New resources
Latest activity
Trending Threads
Resources
Latest reviews
Search resources
FarmTV
Farm Compare
Search
Tokens/Searches
Calendar
Upcoming Events
Members
Registered members
Current visitors
New Resources
New posts
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Forum list
Search forums
Menu
Log in
Register
Navigation
Install the app
Install
More options
Contact us
Close Menu
Forums
Livestock
Livestock & Forage
Lambing ease gestation length
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
Message
<blockquote data-quote="Global ovine" data-source="post: 8098646" data-attributes="member: 493"><p>The birthing process in sheep and cattle is initiated by the foetus/foetuses. This rapid change in hormone secretion type starts an hormonal chain reaction through the placenta to the dam, resulting in contractions and the other physical things we as farmers observe. The dam is the unwitting respondent to these chemical messages.</p><p>The lamb is genetically different to its dam, having half of its make up coming from its sire. That inherited difference from the sire can be expressed in variations in foetal maturity to the point of when it initiates the hormonal change, hence the variation in gestation length between sires.</p><p></p><p>***** It's a sire of the lamb thing, not the breeding of the ewe thing. *****</p><p></p><p>Breeders who record "Survival" using a genetic performance programme have an excellent platform to observe and compare this trait with birth weight. Increased birth weight is influenced by increased Adult Size, this can be a problem for Terminal breeds put over smaller maternal breeds. However "curve bender" sires (smaller birth weight, but faster growth rate) remedy this without the trauma at lambing/calving.</p><p></p><p>***** The figures for the trait "Survival" generally sorts out the problematic individuals. *****</p></blockquote><p></p>
[QUOTE="Global ovine, post: 8098646, member: 493"] The birthing process in sheep and cattle is initiated by the foetus/foetuses. This rapid change in hormone secretion type starts an hormonal chain reaction through the placenta to the dam, resulting in contractions and the other physical things we as farmers observe. The dam is the unwitting respondent to these chemical messages. The lamb is genetically different to its dam, having half of its make up coming from its sire. That inherited difference from the sire can be expressed in variations in foetal maturity to the point of when it initiates the hormonal change, hence the variation in gestation length between sires. ***** It's a sire of the lamb thing, not the breeding of the ewe thing. ***** Breeders who record "Survival" using a genetic performance programme have an excellent platform to observe and compare this trait with birth weight. Increased birth weight is influenced by increased Adult Size, this can be a problem for Terminal breeds put over smaller maternal breeds. However "curve bender" sires (smaller birth weight, but faster growth rate) remedy this without the trauma at lambing/calving. ***** The figures for the trait "Survival" generally sorts out the problematic individuals. ***** [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Livestock
Livestock & Forage
Lambing ease gestation length
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
Accept
Learn more…
Top