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Bioret Série Sol - The PARABOV Génosanté scientific study #5

Lameness is on the increase in dairy herds. Taking account of lameness in selection criteria, early detection and soil type are ways of reducing the frequency of these pathologies.

Improving soil quality to reduce lameness problems

Lameness is a fast-growing problem on dairy farms. Foot and leg problems have become the third most common pathology after mastitis and infertility. Foot health and production performance are linked in dairy cows. An animal with foot injuries or a limp will move less to eat and drink. Its immune status will be deficient. As a result, the cow won't fully express her production potential.

Players in the breeding world are mobilizing to contain lameness problems, with, among other things, the development of preventive trimming and the inclusion of foot health in breeding stock indexing. Thus, since 2014 and the launch of the Génosanté program, breeding organizations have included health indexes in their criteria for choosing future breeding stock. These genetic health indexes combine information on the risk of acetonemia, reproduction, udder health and foot health. Their aim is to propose more resistant breeding stock to improve the health of cows and thus enhance their technical and economic performance. The foot health index is based on seven diseases: infectious diseases (interdigital dermatitis, slug, fourchet) and non-infectious diseases (diffuse bleeding, circumscribed bleeding, opening of the white line, sole ulcer).

A better description of foot injuries to combat them more effectively

Genomics enables us to select the most interesting breeding stock by reading their genome. When we add a new criterion, such as foot health, we need to make the link between the genome and the expression of this trait. This is what has been done through Parabov, a scientific project initiated and financed by France Génétique Elevage, which has made it possible to draw up a reference system for collecting foot lesion data. Carried out on 1,2458 cattle, this survey of foot lesions has a dual purpose: to provide breeders with a lesion assessment of their herd (listing the number and type of lesions to know what to prioritize for action), and to collect information for selection by making the link between the phenotype, in this case foot problems, and animal genotyping.

Evaluating the impact of a soil change

For animals that spend most of their time in buildings, the type of floor and the risk of lesions are linked. In a straw-covered area, you're more likely to encounter bleeding and cherry blight. In a system of cubicles and slurry, there will be more problems with digitis dermatitis. To assess the benefits of a change of floor, lesions on the forequarters and hindquarters of 141 cows were analyzed using the Parabov methodology. Between the two trimmings, which were used to observe these lesions, mats Magellan were installed in the traffic lane. At the second trimming, it was observed that 80% of the lesions had healed, but 8.6% had worsened. In the case of lesions caused by digitis dermatitis or Mortellaro's disease, 80% were healing. The presence of lesions due to Mortellaro's disease fell from 30% to 18%. The number of diffuse bleime lesions fell from 30% to 15%.

With a rubber drainage mat , such as Magellan, excrement is more easily evacuated. Dry, clean hooves are less likely to develop disease. What's more, the grooves facilitate the elimination of small stones, which are thrown up in the excrement. These stones can cause wounds on the sole. Wounds which, although small, are a gateway for germs.

Covering some of the concrete in your barn with soft mats Magellan reduces the risk of injuries and lameness. This contributes to the good health, well-being and full production of your herd.

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