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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
AbstractFull Text

The characteristics of prairie-based milk production systems in Chile and the effect of feed supplements in addition to grazing on the behaviour and productive performance of dairy cows are described.

Author(s)
Pulido F., R.
Publisher
Asociación Argentina de Producción Animal, Balcarce, Argentina
Citation
Revista Argentina de Producción Animal, 2014, 34, 2, pp 34-40
Abstract

The extensive bovine systems of Tierra del Fuego incorporate little management technology so they have low production levels per unit area. However, there are technologies available such as grassland assessment, vegetation type separation, and rotational grazing system that would allow better...

Author(s)
Ormaechea, S.; Gargaglione, V.; Bahamonde, H. A.; Escribano, C.; Ceccaldi, E.; Peri, P. L.
Publisher
CIPAV Foundation, Cali, Colombia
Citation
Livestock Research for Rural Development, 2018, 30, 2, pp Article 33
Abstract

Blood metabolites concentrations present diurnal variations related to food intake. An experiment was carried out to evaluate diurnal variations in the blood metabolites concentration related to feeding behavior in grazing lactating cows. Eight Frisian cows, 60 to 90 days of lactation, were kept...

Author(s)
Noro, M.; Borkert, J.; Hinostroza, G. A.; Pulido, R.; Wittwer, F.
Publisher
Facultad de Ciencias Veterinarias, Universidad del Zulia, Maracaibo, Venezuela
Citation
Revista Cientifica, Facultad de Ciencias Veterinarias, Universidad del Zulia, 2011, 21, 2, pp 125-130
Abstract

An experiment was designed to study the effects of selenium supplementation with sodium selenite on blood activity of glutathione peroxidase (GSH-Px; EC 1.11.1.9) and liveweight gain of selenium deficient grazing dairy heifers from two dairy farms from the south of Chile. A total of 80 Friesian...

Author(s)
Oblitas, F.; Contreras, P. A.; Böhmwald, H.; Wittwer, F.
Citation
Archivos de Medicina Veterinaria, 2000, 32, 1, pp 55-62
Abstract

The purpose of this study was to evaluate the effect of different levels of concentrate supplementation on the productive response of dairy cows fed high daily herbage allowance of spring pasture. The study was conducted from September to November of 2005. 28 spring calving Friesian cows were...

Author(s)
Pulido, R. G.; Escobar, A.; Follert, S.; Leiva, M.; Orellana, P.; Wittwer, F.; Balocchi, O.
Publisher
Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
Citation
Archivos de Medicina Veterinaria, 2009, 41, 3, pp 197-204
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
Abstract

The cost of feeding dairy cattle in different farms in Chile, Argentina and Brazil was analysed, under different methods viz. direct grazing, annual and perennial pastures, rough forage and concentrates. Also, the relation between feeding costs and animal productivity and the incidence of main...

Author(s)
Ostrowski, B.
Publisher
Facultad de Agronomía, Universidad de Buenos Aires, Buenos Aires, Argentina
Citation
Revista de la Facultad de Agronomía (Universidad de Buenos Aires), 2003, 23, 1, pp 1-10
Abstract

The content of selenium (Se) in forage samples and the blood activity of glutathione peroxidase (GSH-Px; EC 1.11.1.9) of groups of lactating cows and heifers were evaluated between autumn and spring of 1999 in 12 dairy herds from IXth Region (38° S and 71° W) of Chile. Se concentration was...

Author(s)
Wittwer, F.; Araneda, P.; Ceballos, A.; Contreras, P. A.; Andaur, M.; Böhmwald, H.
Publisher
Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
Citation
Archivos de Medicina Veterinaria, 2002, 34, 1, pp 49-57

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