Comparison of three devices for the automated detection of estrus in dairy cows
| Autor: | Stéphanie Coyral-Castel, Clément Allain, Pierre Clement, Jean-Michel Lamy, Julie Gatien, Daniéle Ribaud, Pascal Salvetti, Audrey Chanvallon |
|---|---|
| Přispěvatelé: | Biologie, Epidémiologie et analyse de risque en Santé Animale (BIOEPAR), Institut National de la Recherche Agronomique (INRA), Institut de l'élevage (IDELE), R&D, Union nationale des coopératives d’élevage et d’insémination animale (UNCEIA), Chambre d'Agriculture du Maine et Loire (CA 49), Oniris, UMR BioEpAR, PRES Université Nantes Angers Le Mans (UNAM) |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
medicine.medical_specialty
Dairy farmer media_common.quotation_subject [SDV]Life Sciences [q-bio] Ice calving Motor Activity Insemination Animal science Estrus Food Animals Internal medicine Lactation Automated estrus detection medicine Dairy cow Animals Small Animals Ovulation Dairy cattle Monitoring Physiologic media_common 2. Zero hunger Estrous cycle Equine business.industry medicine.anatomical_structure Endocrinology Activity monitoring Estrus Detection Cattle Female Animal Science and Zoology business |
| Zdroj: | Theriogenology Theriogenology, Elsevier, 2014, 82 (5), pp.734-41. ⟨10.1016/j.theriogenology.2014.06.010⟩ |
| ISSN: | 0093-691X |
| Popis: | International audience; Considerable technological advances have been made in the automated detection of estrus in dairy cattle, but few studies have evaluated their relative performance on the same animals or assessed cow-related factors that affect their performance. Our objective was to assess the performance and reliability of three devices commercially available in France for cow estrus detection. The devices were a pedometer (PM; Afitag) and two activity meters (AM1; Heatime-RuminAct, and AM2; HeatPhone). Two algorithms were tested for AM2. We fitted 63 lactating Holstein cows with the three detectors from calving to 90 days after calving. The onset and pattern of cyclicity were monitored from 7 to 90 days postpartum measuring progesterone concentration in milk twice weekly. A total of 211 ovulations were identified. Cyclicity was classified as normal in 60% of cows (38/63). Calculated over the operating period of all the devices (179 periods of estrus), the sensitivities and positive predictive values were, respectively, 71% and 71% for PM, 62% and 84% for AM1, 61% and 67% for the first algorithm of AM2, and 62% and 87% for the second algorithm of AM2. Both activity meters had a lower sensitivity but a higher positive predictive value than the PM (P < 0.05). For all devices, the performance in estrus detection was much poorer at the first postpartum ovulation than at subsequent ovulations (P |
| Databáze: | OpenAIRE |
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