Holstein
Jersey
Red Holstein
Norwegian Red
Overall Mammary Calving Type System Ease
GL
Mastitis Dtr. Bull SCC Resistance Fertility Survival Fertility
103 98 97 102 96 100 105 100 99 101 102 96 101 101 102 101 101 97 98 103 104 104 104
105 97 100 107 95 100 107 97 100 99 104 100 99 98 98 98 103 98 99 100 103 103 98
103 104 104 103 104 103 103 103 104 104 102 107 103 105 103 103 102 104 103 104 103 102 103
-3 -3 -4 -3 -2 -3 -2 -2 0 -4 1 -6 -5 -4 -4 -1 -3 -6 -1 -10 -3 -2 -3
173 182 198 177 174 190 178 177 175 179 167 148 169 183 163 166 182 155 168 170 148 170 150
PTAT
UDC
SCE
GL
1.50 2.38 3.47 3.73
1.59 2.27 2.87 3.72
1.9 2.7 2 2.8
110 112 110 118 115 116 103 106 110 108 110 115 105 105 108 109 104 104 115 105 105 106 108
109 110 109 110 111 111 111 109 109 110 110 111 111 110 110 109 108 109 108 107 107 108 108
SCC
DPR
PL
-0.4 0.9 1.1 0.5
2.75 2.76 2.89 2.80
-1.20 1.70 -1.00 0.50
3.1 5.0 1.6 2.3
Overall Mammary Type System
GL
Mastitis Dtr. Bull SCC Resistance Fertility Survival Fertility
101 101 98 104 96 103 106
1 -2 0 1 -1 -3 -4
147 138 147 135 126 122 119
98 98 97 105 103 105 106
DTR: JAYDEN BUSHFIELD BENITA
109 111 105 110 108 109 105 108 109 109 104 105 105 107 105 107 105 107 106 106 102 103 103
109 105 106 105 103 103 98
104 107 103 99 99 102 98
109 108 107 107 108 107 108
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Semen Fertility Pregnancy Kings PREGNANCY KING Sire has high semen fertility based on actual observations
Semen fertility is different to daughter fertility. Semen fertility relates to the ability of the bull’s semen to get cows in calf. Daughter fertility relates to the ability of the bull’s daughters to get in calf. We cannot assume that an above average semen fertility bull will have daughters with above average fertility. While conception rates are similar for semen from most bulls, some bulls have higher or lower conception rates.
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5-Star
USING FERTILITY STARS
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4-Star 3-Star
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2-Star
**
1-Star
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Genetic advantage is priority Genetic advantage becomes priority Breed average fertility
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Semen fertility becomes priority
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Semen fertility is priority
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ABS Real World Data Bull Fertility is reported using the star ranking system. This chart explains general guidelines of how producers can utilize RWD Bull Fertility to target the use of individual ABS bulls in meeting their herd breeding goals.
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Bull Fertility
ABS Australia sees the importance of providing high semen fertility sires for the Australian dairy farmer and a star system is used to determine which bulls are better for semen fertility. 5-star bulls represent the top 10% for their breed whilst the next 20% are 4-star bulls. These are expected to be above average for semen fertility. All 3 star bulls are considered to be average and consist of the next 40% of the population. Below is a selection of ABS bulls that are high 5, 4 and 3 star semen fertility.
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AVATAR DETROIT HOWLER JERONIMO P MONUMENT P PRO
RUBELS RED SPOCK WATERLOO WINTERFELL CSCBALENTI KALAHARI
LAWSON TULSA WILCO HUSTAD OFSTAD P
CHAD PP CHANDLER CHARLEY CRIMSON DURABLE ELLIS PP ENVOY EQUITY P
ESKER PP GARNETT GENERATE GENESIS GIANNIS HOMELAND SEVILLE VALUE
WATSON WOODROW CSCBANDANNA DAZZLER CSCJAMIEO CSCWOODSIDE ALAND PP
BARBER BILLY BOULEVARD DREAMBIG ELDRIDGE EMPOWER EPISODE GAMMON GINETTA HILLSBORO
HUGO JAGGER PP KNOWHOW KOKOMO LOTTERY MEADOW PP MECCA P MOORLAND PP PAULY P ROOKIE PP
TAILOR WAUBESA DALTON P MARINE VACUUM PP CSCVIRAT BRUMUNDDAL PP JO-ONSTAD MAURSTAD PP ROEN
2023-24 Summer Dairy Update | 23
