The December 2013 sire evaluations for CRV’s Holstein bulls resulted in sires with great contribution to breeding an efficient and healthy herd and even more so with the introduction of the new CRV breeding figures, Better Life Efficiency and Better Life Health. New genomic young sires, returning stars, and the graduation of several proven sires continues to add depth to an already outstanding program.
The December 2013 index run is a special one as it coincides with the introduction of two new breeding figures from CRV: Better Life Efficiency and Better Life Health. All CRV bulls received a first score for these traits in this index run.
• Better Life Efficiency indicates the extent to which a bull contributes to more efficient milk
production. The more energy is converted into milk, the better it is for efficiency. The figure is
expressed as a percentage.
• Better Life Health indicates the extent to which a bull contributes to a healthier herd. A high
score means that a bull’s progeny will have a low rate of health problems such as mastitis,
lameness, difficult calvings or failure to get in calf. This figure is also given as a percentage.
Further explanation of these figures can be found under ‘extra information’ at the bottom of this press release .
New young sires
Six new young sires are being released to US markets this proof run.
Regan (McCutchen x Dorcy x Mac) is the highest TPI bull on the CRV lineup at 2419 TPI. Regan is a type specialist at 4.11 PTAT, making him the highest PTAT bull over 2400 TPI. In addition to his exceptional confirmation Regan also provides longevity at +6 PL.
Case (McCutchen x Man-O-Man x Baxter) comes in at 2310 TPI with a very good 3.28 PTAT. With 113 lbs combined fat and protein with 1,105 lbs milk he transmits a high economic value. This milk will be produced very efficiently (Better Life Efficiency +6%).
Butler RC (Alchemy x Super x Rainyridge Talent Barbara) is a red carrier Alchemy son from the Talent Barbara family with two 95-point cows in the pedigree. Butler comes in at 2230 TPI and 2.72 PTAT. Additionally, he excels in his health traits at +5 PL and +1.2 DPR. His daughters will be healthy (Better Life Health +4%) and they will be efficient producers (+5%).
Other new sires include Caesar (O-Cosmo x Super x Marion) with an extreme production efficiency of +9%, Pep Boy (Hill x Freddie x Jet Stream), and Copernicus (Cameron x Dolce x Active) all premiere at over 2200 TPI and over 90 lbs of combined fat and protein.
Returning genomic stars such as Paltrow, Rocky, Chevrolet , and Danno continue to impress with over 2300 TPI, over 1200 lbs Milk, over 110 lbs combined fat and protein, and leading CM$ at over 780. All four sires are over 2 points for PTAT with greater than +4.5 PL and positive DPRs. They all have a positive contribution to the health of the herd and they all score +7% or more for production efficiency. Chevrolet even has an extreme score of +10 % for Better Life Efficiency.
Newly graduated sire Predestine (Jet Stream x Toystory x Boliver) is a proven sire that will add pounds of milk to the tank. After adding first crop daughters Predestine is now +2420 pounds of Milk with 118 pounds of combined Fat and Protein and adds +8% for efficient milk production. He remains a strong bull with milking daughters at 2024 TPI.
Better Life Efficiency
As a general rule, productivity combined with longevity leads to high efficiency. A bull with a score of +5% transmits 50% of this effect to his offspring. This generates a financial gain of €250 per cow life in an average herd.
Milk yield and longevity are particularly important in calculating Better Life Efficiency, but persistency, maturity rate, fertility and weight are also taken into account in the calculation.
Better Life Health
Using bulls with a high score for Better Life Health has the advantage that the herd becomes easier to manage and that cows stand a better chance of ageing healthily.
Better Life Health is calculated on the basis of a bull’s genetic capacity in terms of udder health, fertility, claw health, calving ease and calf vitality.
A bull with a score of +5% transmits 50% of this effect to his offspring. This generates a financial gain of €70 per cow per year in an average herd.