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Abstract

The objective of the study was to assess the effects of summer weather conditions on animal performance and behaviour in southern Chile. Data of milk yield, animal activity, tympanic temperatures (TT; n=15), and three comfort thermal indices were collected in La Araucanía District. Time of day and...

Author(s)
Jara, I. E.; Keim, J. P.; Arias, R. A.
Publisher
Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
Citation
Archivos de Medicina Veterinaria, 2016, 48, 1, pp 113-118
AbstractFull Text

The aim of the study was to analyze the diet composition, utilization of summer turnips and its relation with milk production in grazing dairy cows from 35 dairy farms in the Province of Ranco, Los Ríos Region, Chile, during summer 2014. Data regarding agronomical features of summer turnip, dairy...

Author(s)
Aucal, S.; Balocchi, O.; Keim, J. P.
Publisher
Facultad de Ciencias Agrarias, Universidad Austral de Chile, Valdivia, Chile
Citation
Agro Sur, 2015, 43, 3, pp 9-18
Abstract

This study evaluated the dry matter intake (DMI), rumen fermentation and milk production responses of lactating dairy cows supplemented summer brassicas. Twelve multiparous lactating dairy cows were randomly allocated to three dietary treatments in a replicated 3×3 Latin square design. The control...

Author(s)
Keim, J. P.; Castillo, M.; Balocchi, O.; Pulido, R.; Pacheco, D.; Muetzel, S.
Publisher
New Zealand Society of Animal Production, Hamilton, New Zealand
Citation
New Zealand Journal of Animal Science and Production, 2018, 78, pp 122-124
Abstract

This study evaluated feeding behaviour, dry matter intake (DMI), rumen fermentation and milk production responses of lactating dairy cows supplemented with kale or swedes. Twelve multiparous early lactation dairy cows were randomly allocated to three dietary treatments in a replicated 3×3 Latin...

Author(s)
Keim, J. P.; Rodriguez, J. R.; Balocchi, O.; Pulido, R.; Pacheco, D.; Muetzel, S.
Publisher
New Zealand Society of Animal Production, Hamilton, New Zealand
Citation
New Zealand Journal of Animal Science and Production, 2018, 78, pp 125-127
Abstract

Grazing dairy cows are characterized by converting a low proportion of dietary N into milk N. This low N use efficiency (NUE) is mainly due to an excessive supply of crude protein (CP) of pasture with regard to animal requirements. Excess N in the diet has negative effects for the animal; it alters ...

Author(s)
Keim, J. P.; Anrique, R.
Publisher
Instituto de Investigaciones Agropecuarias, Chillán, Chile
Citation
Chilean Journal of Agricultural Research, 2011, 71, 4, pp 623-633

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