For some years we have been flushing a group of selected maternal genetics, cows that are proven in the 'free' traits; temperament, fertility, structure, calving ease and marbling, and balanced in the 'cost' traits, milk, muscle, fat, growth.

The extraordinary success of this programme can be measured by pregnancy rates in recipients and calves born to embryos implanted. In 2004 84% of the cows implanted with embryos, calved successfully. This was a total of 350 calves born by ET. In 2005 this number rose to 400 calves born by ET, at an 85% pregnancy rate. In 2006 this success again rose to an 87% calving rate to the embryos implanted with 400 calves born in the ET programme. In 2006 and 2007 the numbers stabilised between 350 and 380 calves out of the total number over 400.

These extraordinary results, as good as anywhere in the world, are due to the emphasis Bryan has placed on herd fertility over a long period of time. This is quite the reverse of what often happens in large ET programmes, where the calving pattern of the herd becomes spread out.

In the case of Rennylea, the calving span has decreased as the tight management of recipients, has led to many calves arriving over a short period of time. Clients have confidence that the expectations placed on cows in the Rennylea System are always as high or higher than those in a commercial situation.

We have never sold embryos from our elite high marbling cows, and in the near future you will be able to purchase small numbers of elite females at our on property sales. Contact Bryan for more information on 02 60202032.