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Abstract

A mechanistic model (COWPOLL) was used to estimate enteric methane (CH4) emissions from beef production systems in Chile. The results expressed as a proportion of gross energy intake (GEI) were compared with enteric fermentation data reported in the last Chilean greenhouse gases inventory, which...

Author(s)
Arias, R. A.; Catrileo, A.; Larraín, R.; Vera, R.; Velásquez, A.; Toneatti, M.; France, J.; Dijkstra, J.; Kebreab, E.
Publisher
Cambridge University Press, Cambridge, UK
Citation
Journal of Agricultural Science, 2015, 153, 1, pp 114-123
AbstractFull Text

The objective of this study was to determine if the supplementation with two carbohydrate sources that have different degradation rates, reduces the ammonia production by ruminal bacteria by increasing the nitrogen capture in dairy cows grazing high protein contents pastures. Four dairy cows fitted ...

Author(s)
Manterola, H. B.; Carreño, N. G.; Orellana, M. C.; González, H. V.; Cerda, D. A.
Publisher
Instituto de Zootecnia, Facultad de Veterinaria, Córdoba, Spain
Citation
Archivos de Zootecnia, 2013, 62, 240, pp 491-499
Abstract

This study was undertaken to evaluate the influence of daily pasture allowance and concentrate type on ruminal pH, the ammonia nitrogen (N-NH3) and the volatile fatty acid (VFA) concentrations in the rumen of autumn-calving dairy cows in early lactation. Three Chilean Black Friesian cows fitted...

Author(s)
Sotelo, J.; Noro, M.; Wittwer, F.; Smulders, J. P.; Pulido, R. G.
Publisher
Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
Citation
Archivos de Medicina Veterinaria, 2012, 44, 2, pp 167-172
AbstractFull Text

The objective of this study was to evaluate the animal response to feeding winter fattening rations based on silages of pure wheat (Triticum aestivum L.) or wheat forage supplemented with broiler litter or a mixture of litter and corn grain. (Zea mays L). Treatments were (1) wheat silage with...

Author(s)
Rojas G., C.
Publisher
Facultad de Ciencias Agrarias, Universidad Austral de Chile, Valdivia, Chile
Citation
Agro Sur, 2009, 37, 1, pp 52-59
Abstract

Application of animal manure amendments to agricultural soils is a common practice to improve soil fertility through the addition of essential plant nutrients. This practice may increase the potential for atrazine (2-chloro-4-ethylamino-6-isopropylamino-1, 3, 5-triazine) leaching due to competition ...

Author(s)
Briceño, G.; Demanet, R.; Mora, M. de la L.; Palma, G.
Publisher
American Society of Agronomy, Madison, USA
Citation
Journal of Environmental Quality, 2008, 37, 4, pp 1519-1526
Abstract

Atrazine is a commonly used herbicide for maize production in Chile, but it has recently been shown to be ineffective in soils that receive applications of cow slurries generated from the dairy industry. This effect may be caused either by the sorption of the pesticide to organic matter or more...

Author(s)
Briceño, G.; Jorquera, M. A.; Demanet, R.; Mora, M. L.; Durán, N.; Palma, G.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Science of the Total Environment, 2010, 408, 14, pp 2833-2839
Abstract

In the Carillanca Regional Agricultural Research Institute, Chile, kernel maize (Zea mays) was compared with sprouted wheat (Triticum aestivum) incorporated in the concentrate of cows that consumed maize silage plus 4 kg of lucerne (Medicago sativa). A total of 8 Chilean Frison Negro cows were...

Author(s)
Hazard, S.; Rojas, C.; Hewstone, C.
Publisher
Instituto de Investigaciones Agropecuarias, Chillán, Chile
Citation
Agricultura Técnica, 2004, 64, 1, pp 25-33
Abstract

For 2 consecutive years, a milk production system was evaluated at Humán Experimental Station, Los Angeles, Chile (37°28'Lat. S. and 72°23'Long. W.). 4 ha of lucerne were used alternately for rotational grazing at the prebud stage and for cutting for hay production at the 10% bloom stage. Maize...

Author(s)
Jahn B., E.; Vidal V., A.; Soto O., P.
Publisher
Instituto de Investigaciones Agropecuarias, Chillán, Chile
Citation
Agricultura Técnica, 2000, 60, 1, pp 43-51
Abstract

During the winter of 1994, a survey of productive and reproductive parameters was undertaken in the south-central part of Chile on 71 cows from 4 small farms with low milk production (<3000 litres/year). Cows were allowed to graze a perennial ryegrass and white clover pasture supplemented with...

Author(s)
Orellana, P.; Recabarren, S.; Lobos, A.; Islas, A.; Briones, M.; Rubilar, L.
Citation
Preventive Veterinary Medicine, 1999, 38, 2/3, pp 207-215

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