With a £PLI of 87, Skalsumer Jorryn has made his debut into the new MDC breeding+ rankings of available Holstein bulls by entering in top place.

Marketed by Cogent, the son of the French-bred sire Jocko Besne, Jorryn takes the number one spot from Mascol, who despite increasing his £PLI by two, drops into second place with a £PLI of 83.

MDC’s breeding+ director Marco Winters says Mascol is also one of the best bulls for improving somatic cell counts, with a predicted proof of -25.

The only bull to beat this in the top 30 is third-placed Picston Shottle, with an SCC score of -26.

“Having added 100kg to his production proof and with a £PLI of 82, Shottle shares third place with O-Bee Manfred Justice.

With an index of -1.2, Justice is one of the better bulls for fertility in the list,” he adds.

Delta Canvas stays in the top five available Holstein bulls, with a £PLI of 81, but has a fertility index of -7.9.

Having doubled his daughter count and increased his £PLI by 1 to 77, UK tested Netherside Dynamo is sixth in the rankings.

Sharing seventh place and a £PLI of 75 are Moet Lookout and Holim Rafael. “Lookout is the highest ranking 99% reliability bull and has added more than 500 daughters to his production proof. He also has a respectable fertility index of -1.8.”

Ninth place sees the second new entry and another Jocko Besne son, Kelstein Kilmer with a £PLI of 73. Ricecrest Boone now has a £PLI of 72 and is ranked 10th, he adds.

Also published this week are the new genetic rankings for specialist breeds.

The published information includes top £PLI lists for bulls with UK progeny tests and international proofs as well as top cows and herd lists.

Further information is available from the breed societies involved and from the MDC breeding+ website (www.mdc.org.uk).

chrissie.lawrence@rbi.co.uk