A brand-new number one bull headlines the daughter-proven Holstein sire list, published this week by AHDB Dairy. Hurtgenlea Richard Charl not only graduates from the genomic list with flying colours, he also leaves a son in number one position amongst the young sires (see separate young genomic sires list).
Charl himself is an early DG Charley son from a Yoder dam, and combines high milk yields (his Predicted Transmitting Ability for milk is 1,162kg) with favourable maintenance feed costs (-15) and a Type Merit of 1.61. His Profitable Lifetime Index is £774.
Three further new graduates in the top 10 are led by second-placed De-Su 14222 Kenobi (PLI £758), a Jedi son with a good Calf Survival Index (CS +3), high PTA protein (38.1kg), and favourable calving ease (0.9).
ABS Crimson, a son of Spectre, is new in third position and transmits high fat (50.4 kg, +0.15 per cent), long Lifespan Index (LS +128 days) and good CS (+3). His PLI is £739.
The final new entry ranks fourth, in the high daughter fertility Jaltaoak son, S-S-I PR Renegade. A daughter Fertility Index (FI) of 11.7 helps earn him a PLI of £735.
A former number one £PLI sire, Bomaz AltaTopshot (by Supershot), ranks fifth, now with 99 per cent reliable production figures helping to earn him a PLI of £728. Topshot-sired calves have shorter than average gestations (GL -5 days), while he transmits good Lameness Advantage (2.9) and long lifespans (LS +110 days).
Also former top 10 sires are Westcoast Yamaska (PLI £720), now in sixth position and transmitting favourable milk solids (+0.21 per cent fat, +0.15 per cent protein) and a good FI (9.1), and seventh-ranking Welcome Silver Griff (PLI £715). Griff transmits the highest percentage fat in the top 10 (+0.25 per cent), and is joined by his paternal half-brother, AOT Silver Helix, who moves up to eighth position.
Both sons of Seagull-Bay Silver, Helix transmits the more extreme production with a PTA 1273kg milk and 102.9kg combined fat plus protein.
The top 10 is rounded off by two bulls which rank highly for the newly launched HealthyCow (£HC). The first is former number one sire Westcoast Guarantee, (PLI £706) offering superb udder health (-24 SCC, -4 Mastitis Index), high daughter fertility (FI 11.1) and fantastic Calf Survival (+3.2). These traits earn him an HC of £258.
Even more highly rated for HealthyCow is Seagull-Bay-MJ Applejax, now with a PLI of £700. With nearly 3,000 UK milking daughters, this high reliability bull scores a whopping £293 HealthyCow, reflecting his daughters’ outstanding fertility (FI 17.6) and good udder health. Applejax also has the highest Type Merit in the top 10 (TM 1.92).
Marco Winters, head of animal genetics for AHDB Dairy, says: “Many bulls in the daughter-proven top 20 have endured for many years, despite the fast pace we now see in genetic improvement.
“These bulls continue to have a place in breeding strategies on many farms, where a track-record of predictable performance is highly valued.”