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New RZG April indexes still highlight key players
Sanderij Ginger Red, number 1 R&W Proven & Interbull R&W proven
In the April 2025 index update, the SingleStep method was introduced in the German breeding value system 'RZG'. From now on, indexes of the Holstein and Red Holstein breeds are calculated using this single-step approach. Despite these changes and the basic adjustments, there are still consistent frontrunners among both the young genomic bulls and daughter proven sires compared to December.
Young Bulls
The frontrunner from December 2024, Pennywise (Picard x Nexus), continues to lead with a gRZG of 165 (+4 from December) and a gRZ€ of 3291. He provides +0.44% fat and +0.13% protein and transmits solid overall type, significantly feet & leg improver with 124FUN. Pennywise comes from the German WEH Jessica cow family and is owned by Synetics. In second place is newcomer Rise Up (one of the first Real Syn sons) with a gRZG of 164. He has quickly made a name for himself at the German KI BG Wölsau. HM Pirelli has risen six places to third compared to december showing a gRZG of 159. Bred by Henk Moonen from the HM Pirella RDC line (Golden-Oaks Mark Prudence family), he has yet to have semen widely available but is already gaining traction as a sire of sons in the Netherlands and Germany.Another sire of sons Argentum (Arizona x Vitality) is also improving by being placed 4th in the lists. Vino P RDC, the top polled and red carring bull, debuts in seventh with a gRZG of 162, and is the highest-ranked Vivivy son in the top 100. PrismaGen Silvanus PP (Strong P x Freewood P) is the highest 'PP-er' in 30th place.
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| Pennywise @Synetics | HM Pirelli @RUW |
The German market is clearly leading in polled breeding, as evidenced by the Red Holstein top list, which is now almost entirely populated by heterozygous and homozygous polled bulls. For instance, the number one bull as of December 2025, Malaga Red (161 gRZG 4-2025), has been surpassed by newcomer Cardiff P, a Can PP RDC son with a gRZG of 162 and a gRZ€ of 3107. Cardiff P belongs to the same cow family as proven bulls Broeks Freemax and Thurler RUW Cover. With just a one-point difference, Cardiff P outperformed Tirsvad 3STAR Member PP Red son, Maksim P Red. He experienced an increase of +9 in his total index and climbed 10 positions on the list, establishing himself as one of the biggest climbers among young Red Holstein bulls. Additionally, he is the highest type sire in the top 20, transmittin 132 gRZE. In third place is Schach (161 gRZG), a Skat P RDC son who rose from 10th place in December to 3rd place in April. The number two bull from December, Solar P (Sirius P Red x Freestyle), has dropped to 6th place with a gRZG of 158. Meanwhile, Mean PP, with a gRZG of 157, is in eighth position and is the highest homozygous polled sire on the list.
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Daughter proven
Pellegrino retains his status as the number one proven Holstein bull in Germany. Based on 1,753 daughters (975 in December 2024), this Topnotch son achieves an RZG of 145. The bull Mirco owned by OHG has benefitted most from the recent single-step evaluation. After ranking 69th in December with 137 RZG (305 daughters), the Mick son has climbed to the second position with 144 RZG (654 daughters). The highest polled sire, Simba P by Simon P, currently holds the third position. At 8th place, we find Koepon Marpon, a Midwolder Martin son from the renowned Koepon Classy family, who is the highest conformation sire in the top of the Holstein list, with a gRZE of 133. His breeding value of 141 RZG is based on over 800 milking daughters, and he brings 440 kgM with 0.56% fat and 0.17% protein.
Koepon Camden RDC has also performed well, being recognized as the highest red carring bull with 135 RZG. This Caudumer Solitair P Red son of Peak Camille VG-88 has maintained his lead over the five-year-old K&L Sputnik RDC by Spark Red, which has a total index of 135 RZG. Among all daughter-tested bulls, Schreur 3STAR Sampler PP (Simon P x Batch P) from the Apina Nadja family stands out as the highest homozygous polled one. With 155 daughters, Sampler PP has achieved his first daughter proven result.
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| Pellegrino @Synetics | Koepon Camden RDC @RBB |
In the current list of Red Holstein proven bulls, two Dutch Gywer RDC sons occupy the top positions. Sanderij Ginger Red retains the lead, boasting over 100 additional milking daughters since December, with anincrease of +2 in his RZG. Visstein K&L SV Aderina Red VG-89's son, Visstein K&L Ghost Red, has moved up one place to second on the list. He surpasses his well-known maternal-brother, the influential sire Visstein K&L Money P Red (currently #3 as of April 2025), with an impressive total of more than 1,800 daughters. In fourth place is De Oosterhof 3STAR Reno Red, a bull that has faced significant competition in the genomics era from bulls such as Money P Red, Ginger Red, and Flight Red. He makes a strong debut with an exceptional index, ranking him in fourth place. Sudena Safari Red, a direct son of De Oosterhof DG Rose RDC VG-89, previously held second place but has now dropped five positions, currently holding an index of 136 RZG.
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The bull with the highest conformation score is Sandro P (Solito Red x Pace Red), who has established himself in fifth place with 138 RZG and 142 RZE. On an international level, Poppe Flight Red offers significant value. This Rubels Red son from the Fienchens was very successful as a young bull and was widely used as a sire of sons as well. He rose in the rankings, moving from 17th in December with an index of 135 RZG, to eighth place in April, with his index now based on 470 daughters.
The leading homozygous polled sire this April is once again Six PP Red (Solitair P Red x Born P RDC) with an index of 132 RZG.
In the Interbull rankings, both Pellegrino and Ginger Red are at the top based on RZG. Among the red and white proven sires 3STAR OH Ranger Red (Rubels Red x Red Range VG-86) holds a strong second place with an index of 142 RZG. Meanwhile, Flight Red’s matenral-brother, Poppe Freestyle Red (sired by Gywer RDC), continues to impress many dairy farmers in the Netherlands, attaining an index of 140 RZG and securing sixth place.
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| Visstein K&L Ghost Red | Six PP Red @Synetics |
