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PRINCIPLE: evaluation of the
genetic potential using the feature measurements made in the station
NON-GENETIC EFFECTS ARE CONSIDERED FROM THE TIME OF ARRIVAL
The cattle are divided in two groups according to age, with a maximum difference of 40 days within each controlled lot, in conformance with the protocol of the National Institute of Agricultural Research (INRA)-Cattle Raising Institute (IE).
The evaluation period as such will only begin after a preliminary phase of "adaptation" whose goal is to diminish the effects of their raising and of the environment with respect to the weight at weaning.
THE ANIMALS ARE THEN EVALUATED IN CONDITIONS AS IDENTICAL AS POSSIBLE TO THOSE FOUND IN A STATION
The effects of the environment are controlled and similar for all the calves, beginning with the feed:
- Systematic annual analysis of all the types of hay purchased and
a calculation of the rations
- Rations based on hay (the only fodder distributed) calculated
for an Average Daily Weight Gain of 1,100 gr./day
- Control of calves made over a period of 120 days (INRA-IE protocol)
The calves are relocated in the manner most commonly used by the cattle raisers, stabled on screens and without hay (selection of leg strength).
The differences in the qualities observed originate above all
in the genetic potential of the calves and not in the environment.
VERY STRICT SANITARY REGULATIONS
During the time they are present in the station, the calves are subject to multiple controls, vaccinations, and prophylaxis.
This is done in order to offer for sale future reproducer bulls who represent the best sanitary guarantees, to eliminate the negative characteristics caused by disease and to reduce the propagation of these diseases: mucous membrane disease, Infectious Bovine Rhinotracheitis (IBR), Brucellosis, Bovine Viral Diarrhoea (BVD), etc.
ADOPTION OF A RECOGNIZED SYSTEM FOR QUALITY EVALUATION
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The goal is to measure a maximum of criteria on objective and reliable bases. |
To determine with the greatest precision possible the genetic potential of the calves evaluated (Determination Coefficient = 0.3). This precision is obtained thanks to the following measurements:
- Detailed evaluation of 29 points of morphology, made upon arrival
at the station and also at the end of the control.
- Detailed measurement of 11 areas, pelvimetry and the measurement
of internal fat (VOS system) at the end of the control.
- Monthly weighing, and weighing upon arrival and at the end of the
control.
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