Compact-calving systems are better suited to dual-purpose than dairy cow breeds, particularly when nutrient supply is limited - Archive ouverte HAL Access content directly
Conference Papers Year : 2018

Compact-calving systems are better suited to dual-purpose than dairy cow breeds, particularly when nutrient supply is limited

Abstract

This study aimed to explore adaptive trajectories of dairy and dual purpose breeds in contrasting grazing-based feeding systems (FS). About 500 lactations were recorded at the INRA farm of Le Pinau- Haras, equally distributed among breeds (Holstein: HO or Normande: NO) and FS (High or Low). It was possible to study the different steps of the reproductive process by combining milk progesterone information (three times a week) with intensive oestrous behaviour recording and pregnancy diagnosis (ultrasonography). Holstein produced more milk (+2294 kg in the High FS, +1280 kg in the Low FS) and lost more body condition than NO. Cows in the Low FS produced less and lost more body condition than in the High FS. NO resumed ovarian activity earlier (-5 d) and showed a higher proportion of normal cyclicity patterns (+22%) than HO. There was no difference in ovulation detection rates between breeds or FS. The NO had a higher re-calving rate than HO (+19%). Feeding system was not associated with cyclicity and re-calving rate. By limiting their milk yield, NO did not experience a severe negative energy balance, unlike HO. This resulted in better reproductive performance for NO, suggestive of greater suitability to a compact calving system.
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Dates and versions

hal-01827928 , version 1 (02-07-2018)

Identifiers

  • HAL Id : hal-01827928 , version 1
  • PRODINRA : 434601

Cite

Nicolas Bedere, Catherine Disenhaus, Ségolène Leurent-Colette, Luc Delaby. Compact-calving systems are better suited to dual-purpose than dairy cow breeds, particularly when nutrient supply is limited. 27. General meeting of the European Grassland Federation (EGF), Jun 2018, Cork, Ireland. ⟨hal-01827928⟩
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