Trent Bridge

NEW TO F1 WAGYU? YEARLING BULLS: Relationships: Less than 7% of F1’s are bought and sold through public markets (like AuctionsPlus) the vast majority of cattle are sold directly into supply chains. If you are looking at moving into F1’s for the first time, our suggestion would be to make contact with a supply chain and talk to them about your breeding plans. They may wish to discuss the type of female you will be using and will likely have specifications around the type of bulls that are suitable for their individual F1 programs. Marbling is King: With the F1 program, the first metric to look at is the marble score EBV. Most supply chains look to have a marble score EBV average of over 1.5. Growth: Although marbling is critical, as a producer you still get paid on kilograms of live weight, so do consider the growth figures of the animals. The only thing to keep in mind is birth weight. Although wagyu are smaller than other breeds, they still have the capacity to produce bigger calves – so we recommend a birth weight EBV of under 2.2 for heifers. In contrast if you are joining cows there is a lot more opportunity to push birth weight and growth figures. A common question we get is around the different growth rates of F1’s compared to a straight angus. Although there are a number of variables, including the growth figures of the specific wagyu bull, the average discounted growth rate is approximately 10%. Replacement Females: Obviously we are very focussed on the bull side, but just as much attention needs to be placed on the female side of your breeding program. We recommend selecting females bred from studs with a focus on carcase traits. • Wagyu’s are naturally fertile, however, yearling bulls need to be looked after. Our recommendation is one yearling bull should not be joined to more than 30 females and consider the size of your joining paddock. • If you are doing an AI program and then backing up with yearlings, consider more bulls, as a large number of animals coming on heat at one time can test their stamina. • Once the season is finished bulls will often have lost quite a bit of condition, we suggest looking after them before the next joining. • As mature bulls (24 months +), wagyus demonstrate great fertility and longevity and can normally handle around 55 to 60 females in a joining. Historically the majority of our sale bulls have gone over angus females and into F1 wagyu programs. If you are entering into this market, here are a few things to consider: If you are using yearling bulls for the first time, here are a few things to consider: 4 | Premium Genetics for Premium Markets

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