What These Numbers Mean for Your Herd
Bull proofs compare a sire's daughters against the breed average โ here is what 3STAR OH SUNSTAR P-RED-ET's figures mean in practice:
PTA Milk +1,385 kg
His daughters are expected to give about 1,385 kg more milk per lactation than the average Holstein โ roughly 4.5 extra litres every day for 10 months.
PTA Fat & Protein
Extra kilograms of butterfat and protein in his daughters' milk. Richer milk fetches better prices from processors who pay on solids, and makes more value per litre at the collection centre.
Somatic Cell Score 2.81
Lower is better โ anything under about 2.9 means his daughters inherit strong natural resistance to mastitis. This bull scores well here.
Productive Life +3.8
His daughters are expected to stay milking in your herd about 3.8 months longer than average โ fewer forced replacements, more lifetime milk per cow.
Daughter Fertility +0.7
Positive means his daughters come back on heat and conceive faster after calving โ shorter calving intervals, more calves and milk over a lifetime.
TPI 2,917
A single overall ranking combining production, health and type. Useful for comparing Holstein bulls side by side โ above ~2,800 is elite in current rankings.
Beta Casein A2/A2
A2/A2 means all his daughters produce only A2 milk โ a growing premium market segment.
Kenya-Relevant Ratings (1โ5)
Our simplified scores for the traits that matter most on Kenyan farms. 5 is excellent, 3 is average, 1 is weak. The smart strategy: pick a bull whose strong ratings match your herd's weaknesses โ if mastitis is your problem, prioritise Mastitis Resistance over Milk.
New to reading bull proofs? Our free breeding guidesexplain how to match a bull to your herd's weaknesses โ or register and let KilimoDairy recommend bulls for each of your cows automatically.
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Calving Ease
1.8%
Calving ease score
Only about 1.8% of births to first-calf heifers are expected to need assistance โ an easy-calving sire, safe to use on well-grown heifers.