Rotational Breeding Guide

For breeders the rotational breeding system promoted by Mr. Shogo Takrda is a great tool to use. The system is used to create well balanced cattle that do well in the cow herd and also, deliver the best overall profitability.

As a point of reference, the following major strains and sub strains of Japanese Black Wagyu commonly have these traits respective to them:

  • Okayama; Shimomae: Large Frame
  • Sub-strains: Shimomae, Kiyokuni, Fujiyoshi, Itozakura
  • Shimane: Outstanding structure, strong length, depth, and good milking
  • Sub-strains: Itozakura
  • Tottori: Large frame, superior meat/marbling, quality, good milking
  • Sub-strains: Eiko, Kedaka
  • Hyogo; Tajima: Superior marbling, most popular
  • Sub-strains: Yasumi Doi, Kikumi Doi, Oku Doi, Shigakananemi, Shiroiti, and Kanemon

2014 USA Wagyu Sire Summary Top 30 Marbling Sires

For your information a list of the highest ranking (for Marbling only) 30 sires as presented in the 2014 Wagyu Sire Summary, as calculated by Colorado State University.

The chart below compares the USDA scale to the Japanese scale.

Reg # Name No. of Progeny EPD No. Contemp. Groups Accuracy
FB2101 JVP Fukutsuru 068 79 0.62 9 0.55
FB5072 Bar R Yasufuku 42K 27 0.51 3 0.40
FB6185 Bar R Ichiro 31R 18 0.45 2 0.34
FB9861 CHR Shigeshigetani 5 10 0.39 2 0.28
FB9420 Michiyoshi 12 0.38 2 0.33
PB10308 Dow Ranches 912 8 0.38 2 0.25
FB8994 Bar R Itoshigenami 48U 34 0.37 2 0.40
FB8177 Bar R Shigeshigetani 30T 26 0.35 2 0.38
FB4954 Bar R Takasuru 1K 15 0.35 2 0.34
FB2501 Sanjirou 279 0.34 6 0.61
FB6521 BR Itomichi 4632 14 0.33 2 0.29
FB5663 Bar R Sanjirou 4P 9 0.32 2 0.28
FB4934 BR Kitateruyasudoi 9680 21 0.28 3 0.38
FB6135 BR Kitateruyasudoi 0615 9 0.28 3 0.29
FB10406 Bar R Shigeshigetani 20W 3 0.27 2 0.22
FB5665 Bar R Takazakura 12P 7 0.27 1 0.12
FB1615 Michifuku 624 0.25 23 0.63
FB5267 BR Kitateruyasudoi 0632 21 0.25 2 0.34
FB5836 BR Michifuku 1628 11 0.22 1 0.30
FB6152 BR Michifuku 1604 18 0.21 1 0.34
PB354 B1 Ramsey 38 0.21 1 0.27
FB7721 Bar R DBL Suzutani 59T 49 0.20 4 0.49
FB4938 BR Kitateruyasudoi 9678 16 0.19 2 0.35
FB5055 Bar R Fukutsuru 40K 17 0.18 2 0.37
FB10050 Bar R Yasufuku 57U 4 0.18 2 0.22
FB5056 Bar R Sanjirou 44K 10 0.17 2 0.39
FB4960 BR Fuktsuru 9670 15 0.17 2 0.36
FB6186 Bar R Ichiro 32R 17 0.17 2 0.35
FB6008 CHR Hirashige 170P 12 0.17 2 0.29
FB8376 Westholme Hirashigetayasu Z278 14 0.16 2 0.33

EPD’s are the best estimates that we have of an animal’s genetic potential. These estimates take into consideration all information that is available for an animal.
The attached table gives EPD’s for several carcass and growth traits for a number
of Wagyu sires in the United States. All of the information in this summary is based on measurements from half blood Wagyu animals. These animals were raised in contemporary groups (CG’s). A contemporary group consists of animals
raised under the same management conditions. The number of progeny and number of contemporary groups for each sire are listed in the summary tables for each trait.

EPD’s are not true values, but predictions and we expect them to change with new information. The reliability of an EPD is
indicated by its accuracy (ACC), which is reported as a decimal number ranging from 0 to 1. Accuracy values closer to one
indicate that the change in the EPD will be small. When the accuracy is closer to zero, a larger change is expected. Accuracy
increases as the number of progeny and contemporary groups increases.

Dr. Mark Enns the director of CGEL.
Animal Science Department at Colorado State University
Charles T. Gaskins
Washington State University
Department of Animal Sciences