TheCattleSite.com - news, features, articles and disease information for the cattle industry


Go Back   TheCattleSite Discussion Forum > Reproduction, AI & Genetics
User Name
Password
FAQ Members List Calendar Search Today's Posts Mark Forums Read

 
 
Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
  #1  
Unread December 28th, 2009, 19:23
joncowcare joncowcare is offline
Super Moderator
 
Join Date: Nov 2009
Location: Cheshire
Posts: 75
Default AI or Natural service ?

Hi all,
Although being a qualified AI herdsman who has had to use various synthetic hormones [Estrumate, Lut etc]to ensure synchronised breeding, especially with groups of up to 40 heifers I still prefer to leave it to the bull when possible.
[Obviously with large groups a bull would soon tire and so I accept AI]
My reasons ? The amount of sperm held in an AI straw can in no way equal the amount delivered by a good healthy bull in his prime.
Optimum timing for a cow for AI is after standing heat and only the bull himself can effectively sense/smell this.
I would argue that conception rates of [as an average] 68% to 1st service using AI are not as good as rates compared with a bull.
To get round this I often 'double-serve' the best cows to improve conception rates.
Do you do it differently or have any thoughts on this, I'm open to ideas.
Thanks !
Jon
Reply With Quote
 


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT. The time now is 21:58.


The Essential Guide to Meat - Old Pond Publishing

Our Sponsors

Partners


Seasonal Picks

So You Want to Be a Vet - 5m Books