Specialist Symbols

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% BLACK
Number in top blue arrow indicates sire’s own percentage black
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A2A2
Sire possesses A2A2 gene for beta casein
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ABS PROVEN
Sire is proven through the ABS progeny testing system
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AUSTRALIAN PROVEN
Sire has Australian milking daughters
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CALVING EASE 
Sire has superior calving ease based on actual observations
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CENTRAL SIRES CO-OP
Central Sires Bulls marketed and distributed through the relationship with ABS.
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DAUGHTER FERTILITY
Sire whose daughters show improved fertility
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DIAMOND SIRE
Sire has at least 1000 milking daughters, which recognises outstanding second crop success and ensures genetic accuracy
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FEED EFFICIENCY
Sire breeds more efficient, profitable cows for increased income over feed cost
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GENOMIC VALUE
Sire is yet to be proven; possesses desirable genomic values
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GOOD BULLS GUIDE
Identifies bulls by independent, scientific assessment by DataGene using the world’s best practice in genetic evaluation
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HIGH TYPE
Sire has high type traits and will produce offspring of superior conformation
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ICON SIRE
Sires in our Icon Sire™ program offer the very best genetics from our breeding program. Read more
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KAPPA CASEIN BB
Sire possesses BB gene for kappa casein which helps in the cheese making process. Cheese from the milk of BB cows clots 25% faster and is twice as firm as cheese from AA cows’ milk.

LINEAR CHOICE
Linear Choice sires are stringently selected aimed at the commercial dairyman that is looking for balanced cows; each sire will produce a well-built, productive, and healthy dairy cow
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NEW GRADUATE
Sire is a new graduate
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POLLED
PP = True polled P – Polled
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PREGNANCY KING
Sire has high semen fertility based on actual observations and Real World Data (RWD).
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ROCK SOLID GENETICS
Sire has at least 100 daughters in 60 herds, which provides stable type and production proofs over time.
Sexcel
SEXCEL®
Elite sexed genetics

ST JACOBS CHOICE
The fusion of our original Judge’s Choice and Breeder’s Choice programs now in just one – St. Jacobs Choice – delivering Type Without Compromise!