Moreover, they found that crossbreeding was a tool to help mitigate environmental impact of milk and cheese production and improve economic environmental indicators.
Kelly said his culling rate had fallen to 25%, but he hopes to lower it to 20% in the future and use X-Vik sexed semen exclusively on heifers. This would allow him to mate all cows to Aberdeen-Angus to capitalise on strong beef returns.
Morten Kargo, product manager DairyCross, Viking Genetics, Denmark, encouraged more farmers to use sexed semen on higher-ranking females to reduce the genetic lag between dairy cows and artificial insemination bulls.
This requires breeding values, which he said were being developed using parent averages for the three breeds used in the ProCROSS breeding programme.
“We will have breeding values available during the autumn. These will be available on VikMate.”
The final speaker, Annica Hansson from VAXA, member cooperative of VikingGenetics, said ProCROSS heifers do require lower energy growing rations, largely because they reach sexual maturity quicker.
Although she caveated, rations should be balanced for minerals and energy based on forage quality.
She also advised farmers to inseminate on weight rather than height because VikingHolsteins and Coopex Montbéliarde are usually taller than VikingRed.
She said at drying off, ProCROSS cows were typically at least half a body condition score ahead of Holsteins.
“At drying off, my goal is to have a BCS of 3-3.5. ProCROSS are a bit heavier and manage fine, but don’t put dry cows on a diet while they are preparing for the next lactation.”