We will ensure genetic diversity and maintain high-performing sire lines, to consistently produce the highest quality poll wagyu.
PP – homozygous poll, PH – heterozygous poll, HH – homozygous horned
- Our first joining was by flushing the Hammond family’s purebred PH dams, to Bar R 52Y (PH), producing embryos that were 75% polled (25% PP and 50% PH). We will bring some of the PP heifers and bulls from this calf drop back into the breeding program, crossing them back against a fullblood dam or bull, such as the Hamblin’s MOYFD0507 MOYHU F D507 (AI), to produce 100% PH calves (A and B in the diagram below). This will ensure genetic diversity.
- Our second joining was between Scott de Bruin’s high-performing sire ADBFA0139 MAYURA ITOSHIGENAMI JNR (AI) and the Hammonds’ PH dams, producing 25% PH progeny. One of these is Itoshigenami Jr’s son, M775. This bull is phenotypically sound and with his sire and dam’s genetics, should be high performing. He will be crossed over a PP dam to produce 50% PP and 50% PH progeny; 100% polled calves (C in the diagram below).
- We will cross PP heifers with the best PP bull to produce 100% PP calves (D in the diagram below). This will ensure greater access to PP animals. These PP animals can then be backcrossed with fullblood genetics to ensure genetic diversity and herd strength.
- Itoshigenami Jr’s son, M775, is heterozygous. His semen will play a large part in the next generation of poll cattle. We will cross him over select homozygous, and heterozygous heifers, ensuring that a large number of poll progeny with Itoshigenami Jr’s outstanding genetics.
We will continue to cross PP heifers with proven fullblood bulls to maintain genetic diversity and carcass performance. We will breed with high-performing bulls to consistently produce the highest quality poll wagyu.