You can locate the aAa code on our active bulls where the Dairy Sires Catalogues, also you can list them by aAa code.
The aAa numbers are listed in the order in which the bull can best sire that particular trait. For example, a bull whose aAa number is 216345 means this bull will sire daughters that are tall and dairy with some style. When using a cow's aAa number for mating, the numbers are listed in the order in which she needs improvement most.
Remember, when using a bull's aAa numbers for matings, the numbers are listed in the order in which he will most improve traits.
Ample will to milk.
Fast milk let down.
More milk for size.
High udder for easy care and modern milking.
Room for the udder.
Added calving ease.
Long breeding life.
Larger mature size.
Healthy udder, feet and legs and lungs.
Less injury to teats and legs.
Less foot trimming.
More durable bones.
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