F1 hybrid, or first filial generation, is a genetic term used to describe the first generation offspring of clearly different types of parents. Subsequent generations are referred to as F2, F3, and F4. This term is commonly used to describe Wagyu cattle that are bred with a different breed with distinct characteristics. For example, offspring resulting from breeding a 100% Angus with a 100% Wagyu would be considered F1 (50% Wagyu and 50% Angus). If this F1 hybrid were then bred with a 100% Wagyu, the result would be F2 (75% Wagyu and 25% Angus). If this F2 were bred with a 100% Wagyu, the result would be F3 (87.5% Wagyu and 12.5% Angus). Finally, if this F3 were bred with a 100% Wagyu, the result would be F4 (93.75% Wagyu and 6.25% Angus).

Many of our Wagyu cattle are also registered in the Australian stud book. It’s a reliable and comprehensive system that allows for purposeful mating planning.

However, it’s important not to forget that nature still influences reality – so, an animal may exhibit different outcomes.

The Australian Wagyu Association (AWA) is located in Armidale. In 2020, over 100,000 cows and nearly 12,000 bulls were registered – many of these animals have additional values available, such as carcass weight, rib-eye size, marbling, and marbling fineness. Previously, Estimated Breeding Values (EBVs) calculated based on offspring observations have now been replaced by a so-called “single-step breeding plan,” which incorporates all additional acquired values. Particularly important are the results of genomic Estimated Breeding Values based on data from over 60,000 animals (SNP test).

EBV stands for Estimated Breeding Value. Estimated Breeding Values obtained through SNP testing improve EBV accuracy – especially for young animals with no offspring yet. Over time, adding data increases prediction accuracy – as shown in the examples below. Half of the corresponding values for each animal are then used in a new mating.