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A survey on dairy heifer farm management practices in a Western-European plainland, the French Pays de la Loire region

Published online by Cambridge University Press:  16 February 2012

Y. LE COZLER ,
O. RECOURSÉ ,
E. GANCHE ,
D. GIRAUD ,
J. DANEL ,
M. BERTIN  and
P. BRUNSCHWIG
Y. LE COZLER*
Affiliation:
Agrocampus-Ouest, UMR 1348 Physiology, Environment and Genetics for the Animal and Livestock Systems, 65 Rue de St-Brieuc, 35042 Rennes Cedex, France UMT RIEL, Domaine de la Prise, 35590 St-Gilles, France
O. RECOURSÉ
Affiliation:
CLASEL, 141 Boulevard des Loges, 53942 St-Berthevin Cedex, France
E. GANCHE
Affiliation:
Agrocampus-Ouest, UMR 1348 Physiology, Environment and Genetics for the Animal and Livestock Systems, 65 Rue de St-Brieuc, 35042 Rennes Cedex, France
D. GIRAUD
Affiliation:
Agrocampus-Ouest, UMR 1348 Physiology, Environment and Genetics for the Animal and Livestock Systems, 65 Rue de St-Brieuc, 35042 Rennes Cedex, France
J. DANEL
Affiliation:
Agrocampus-Ouest, UMR 1348 Physiology, Environment and Genetics for the Animal and Livestock Systems, 65 Rue de St-Brieuc, 35042 Rennes Cedex, France
M. BERTIN
Affiliation:
Les Contrôles de Performances, Rue de la Géraudière, 44939 Nantes Cedex 9, France
P. BRUNSCHWIG
Affiliation:
UMT RIEL, Domaine de la Prise, 35590 St-Gilles, France Institut de l'Elevage, UP CATL 9 Rue André Brouard, BP 70510, 49105 Angers Cedex 02, France
*
*To whom all correspondence should be addressed. Email: yannick.lecozler@agrocampus-ouest.fr
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Summary

Despite practical information and applied results from numerous experimental studies and/or field observations, there is a persistent gap between scientific recommendations and on-farm reality. There are numerous published reports on the impact of dairy heifer herd management conditions on short-term, medium-term and long-term performances, but few studies on actual dairy heifer herd management practices – particularly in France. In an attempt to address this shortfall, a survey was conducted in 2010 on 449 herds located in the second largest dairy production region, the Pays de la Loire region (Western France). Economic-related aspects of heifer farming were not addressed. The essentially qualitative survey information was collected by 107 independent agricultural technologists. A quantitative analysis based on a small set of the most representative key production criteria was also conducted on a representative sub-sample of 286 herds. Mean herd size, at 46·6 cows per farm, and milk production, at 7953 kg milk/cow/lactation, were close to French national averages (47·3 cows per farm and 8109 kg milk/cow/lactation). The survey covered nine core themes and confirmed an all-round lack of precise monitoring on animal growth, as reported in earlier studies performed outside France. Most of the farmers surveyed considered animal weight a useful indicator for estimating growth performance. However, very few actually weighed their animals, despite the fact that 0·80 of the farmers surveyed aimed to calve their heifers before 30 months of age, with 0·55 of them setting a minimum calving weight target of at least 610 kg. Mean calf age at weaning was 2·9 months, but in practice this was >3·5 months in 0·31 of cases. Although farmers differ on certain practices, common core foci emerged: weight or age targets for pre-determined growth and development stages (at weaning or at service), recycling non-marketable milk for feeding young calves, essentially visual oestrus detection methods, and others. Based on the farmers’ declarations, the estimated time spent rearing a heifer from birth to calving ranges from 12 to 15 h per animal, with most farmers spending an estimated 0–2 h/day rearing their heifers. While almost two-thirds of farmers stated that rearing heifers was a necessity, 0·36 of this survey population claimed they enjoyed the work, whereas 0·02 of the farmers felt the work was purely a chore. Mirroring the conclusions from other countries, dairy heifer herd performances could be improved through better animal monitoring and management.

Type
Animal Research Papers
Information
The Journal of Agricultural Science , Volume 150 , Issue 4 , August 2012 , pp. 518 - 533
Copyright
Copyright © Cambridge University Press 2012

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