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Carcase Data

We maintain a database of our herd. We collect feed and carcase data and this allows us to compare our animals with the AWA published means and assess the accuracy of EBVs compared to actual carcase results as well. We feed this data back into the herd to optimise backgrounding, feed time, marble score and weight. We follow the statistics on both the male and female lines and when possible include data for cattle that have been sold.  The data provided here reflects our herd and the descendants of our herd. Only statistically significant data is included. If you would like to enquire about the statistics please contact us below.

Bull Lines

Samaria Valley Kinuyasudoi - SVWFD278 is a Blackmore bred bull, the son of Blackmore Kinuyasudoi BYWFFY0350, grandson of Westholme Kitateruyasudori IMJFAJ2810. He has a quiet temperament. He is a high Tajima bull. We have used him to increase marbling while maintaining size.

SVWFD278 June 2021 carcase data

SVWFD278 May 2019 carcase data


Samaria Valley Kinuyasudoi - SVWFD280 is a Blackmore bred bull, the son of Blackmore Kinuyasudoi BYWFFY0350, grandson of Westholme Kitateruyasudori IMJFAJ2810. 

SVWFD280 June 2021 carcase data 

SVWFD280 May 2019 carcase data


Samaia Valley Yukiharunami - SVWFE283 is a Blackmore bred Fujiyoshi/Shimane type bull. Sire IMUFQ2599 TF Yukiharunami and Grandsire IMUFQTF147 Itoshingefuji. He has been used to maintain size and add some genetic diversity through Yukiharunami 4 line. He has the ability to maintain the dam’s marbling while increasing size.

SVWFE283 June 2021 carcase data

SVWFE283 May 2019 carcase data


Samaria Valley SVWFH493 - This bull combines Wright Wagyu WESFZ0278’s maternal and size characteristics with an increase in marbling ability through his dam’s sire - Michifuku. This is a bull to increase size and maternal characteristics.

SVWFH493 June 2021 carcase

SVWFH493 May 2019 carcase data


Peppermill Grove H008 - PMGF008 is 80% Tajima but has sires on both sides providing size. His sire Kitateruyasudoi J2810 (ET 003) provides size and marbling while on his dam brings Itoshigenami's balance of traits to a dam that combines the marbling power of Kikuyasu 400 (the largest 100% Tajima Fullblood bull to leave Japan) with the excellent maternal traits of a TF Hikohime dam..

Peppermill Grove H008 June 21 carcase data

SVW Kinuyasudoi - SVWFD278 is a Blackmore bred bull, the son of Blackmore Kinuyasudoi BYWFFY0350, grandson of Westholme Kitateruyasudori IMJFAJ2810. He has a quiet temperament. He is a high Tajima bull. We have used him to increase marbling while maintaining size.
Samaria Valley Kinuyasudoi - SVWFD280 is a Blackmore bred bull, the son of Blackmore Kinuyasudoi BYWFFY0350, grandson of Westholme Kitateruyasudori IMJFAJ2810.
Samaia Valley Yukiharunami - SVWFE283 is a Blackmore bred Fujiyoshi/Shimane type bull. Sire IMUFQ2599 TF Yukiharunami and Grandsire IMUFQTF147 Itoshingefuji. He has been used to maintain size and add some genetic diversity through Yukiharunami 4 line. He has the ability to maintain the dam’s marbling while increasing size.
Samaria Valley SVWFH493 - This bull combines Wright Wagyu WESFZ0278’s maternal and size characteristics with an increase in marbling ability through his dam’s sire - Michifuku. This is a bull to increase size and maternal characteristics.

We have eight foundation dams that were selected for frame score, maternal characteristics and genetic diversity. Our carcase results have been analysed for four of these maternal lines and these cow lines have performed well above AWA averages on marble score as well as car-case size.

These lines follow the maternally inherited mitochondrial DNA. As mitochondria work within cells to provide energy to the cell and animal. On a cellular level (histological stains) have identified the fibres rich in lipid containing droplets are found in close proximity to mitochondria (Gauthier, 1970). 

https://www.publish.csiro.au/an/pdf/EA00015

Even MLA ban in 2003 recognised the importance of Mitochondria as a biological determinant in the establishment of intramuscular fat, since then a lot more research has been completed on this topic. MLA Link MLA PDF

This is why Japanese wagyu farms and our farm tracks both the Male and Female lines. The CSIRO and Americans have been quite active in this even publishing data to the scientific record. Some of the more interesting articles are;

  • • Effect of Mitochondrial DNA Variation on Carcass Traits of Japanese Black Cattle (1998) 
  • • Identification of mitochondrial DNA substitutions related to meat quality in Japanese Black cattle (2003)
  • • Significant associations of the mitochondrial transcription factor A promoter polymorphisms with marbling and subcutaneous fat depth in Wagyu x Limousin F2 crosses (2005)
  • • The CSIRO - Quantitative and molecular genetic influences on properties of beef: a review (2001)


For our farm these are the mitochondrial lines we have tracked so far, reaching statistical significance




Mitochondia inside a cell

Cow Lines