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Abstract

Administration of monensin to dairy cows during the transition period may improve cow health, although this is debated. An evaluation of the effects of an intraruminal controlled-released bolus of monensin on health and milk production in transition Holstein cows was done in a Chilean dairy farm....

Author(s)
Melendez, P.; Arévalos, A.; Duchens, M.; Pinedo, P.
Publisher
Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias (INIFAP), Mexico City, Mexico
Citation
Revista Mexicana de Ciencias Pecuarias, 2019, 10, 1, pp 84-103
Abstract

The objective of this study is to characterize the heat detection, conception and pregnancy rates of Holstein dairy herds from Central area of Chile in the year 2004. Records from six dairy herds was examined and results showed that heat detection rate for period 1, 2 and 3 was 48.4%a, 52.8% b, and ...

Author(s)
Duchens, M.; Melendez, P.; Perez, A.; Moraga, L.; Archbald, L. F.
Publisher
American Association of Bovine Practitioners, Stillwater, USA
Citation
Proceedings of the Fortieth Annual Conference, American Association of Bovine Practitioners, Vancouver, British Columbia, Canada, 20-22 September, 2007, 2007, pp 281
Abstract

AIMS: To describe milk yield and culling risk in cows diagnosed with left displacement of abomasum (LDA) treated either conservatively, by right flank pyloric omentopexy, or rolling and toggling, compared with normal herdmates from four Chilean dairy herds. METHODS: Historical records were obtained ...

Author(s)
Melendez, P.; Romero, C.; Pithua, P.; Marin, M. P.; Pinedo, P.; Duchens, M.
Publisher
Taylor & Francis, Melbourne, Australia
Citation
New Zealand Veterinary Journal, 2017, 65, 6, pp 292-296
Abstract

Background: Ketogenesis is a secondary metabolic pathway to provide energy to dairy cows during early lactation; however when the production of ketone bodies (acetoacetate, acetone, β-hydroxybutyrate) is above certain levels a subclinical disorder may appear. The aim of the present study was to...

Author(s)
Melendez, P.; Pinedo, P.; Bastias, J.; Marin, M. P.; Rios, C.; Bustamante, C.; Adaro, N.; Duchens, M.
Publisher
BioMed Central Ltd, London, UK
Citation
BMC Veterinary Research, 2016, 12, 50, pp (11 March 2016)
Abstract

The objectives were to characterize the oestrus detection risk (HDR), conception risk (CR), and pregnancy rate (PR) of postpartum (pp) Holstein cattle from the central area of Chile. The study used records of 2269 lactations from six dairy farms in central Chile (Mediterranean-type climate) during...

Author(s)
Melendez, P.; Duchens, M.; Perez, A.; Moraga, L.; Archbald, L.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2008, 70, 4, pp 631-637
Abstract

The objective was to describe the relationship between concentration of serum nonesterified fatty acids (NEFAs) at calving and the incidence of periparturient disorders in Chilean Holstein dairy cows (Bos taurus). The study was conducted at two dairies (central Chile) with 700 milking cows each and ...

Author(s)
Melendez, P.; Marin, M. P.; Robles, J.; Rios, C.; Duchens, M.; Archbald, L.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2009, 72, 6, pp 826-833

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