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.

Breed average fertility

Semen becomes priority

Semen fertility is priority

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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