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Abstract

At each of 2 sites in central southern Chile crossbred Friesian cows were grazed together in a traditional rotational grazing system (A) or were kept in 2 groups, the half producing most milk grazing first (B1) followed by the others (B2) grazing on what was left. The pastures were irrigated and...

Author(s)
Jahn B., E.; Vyhmeister B., H.; Vidal V., A.; Bonilla E., W.; Millas A., P.
Citation
Agricultura Técnica, 1983, 43, 3, pp 203-209
Abstract

The effects of 3 successive previous years of winter (May-Aug.) grazing by dairy cattle or closing on a Lolium perenne/Trifolium repens sward were studied from June to Dec. 1986 in field trials near Temuco, Chile. Plots were not winter-grazed during 1986 but were rotationally grazed in spring. DM...

Author(s)
Romero Y., O.; Gatica A., R.
Citation
Agricultura Técnica, 1989, 49, 2, pp 141-147
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
Abstract

The objective of this study was to determine the effect of herbage mass, metabolizable energy content, tiller density and dimensions on grazing selectivity, measured by grazing time and estimated herbage intake, on the ryegrass ingestive behaviour of lacting dairy cows. This study was conducted...

Author(s)
Anwandter A., V.; López C., I.; Balocchi L., O.
Publisher
Facultad de Ciencias Agrarias, Universidad Austral de Chile, Valdivia, Chile
Citation
Agro Sur, 2008, 36, 1, pp 15-26
Abstract

This study was conducted to determine the effect of the ploidy of perennial ryegrass (Lolium perenne) cultivars on herbage production, nutritive value, grazing preference and utilization of pasture produced under the soil and climatic conditions of Southern Chile for 3 years. The tetraploid...

Author(s)
Balocchi, O. A.; López, I. F.
Publisher
Instituto de Investigaciones Agropecuarias, Chillán, Chile
Citation
Chilean Journal of Agricultural Research, 2009, 69, 3, pp 331-339
Abstract

Lolitrem-B is a neurotoxic substance that causes the ryegrass staggers syndrome in cattle, sheep and horses consuming ryegrass (Lolium perenne) infected with endophytic fungus Neotyphodium lolii. Due to the increasing use of ryegrass pasture in southern Chile, it is necessary to know the content of ...

Author(s)
Moyano A., S.; Lanuza A., F.; Torres B., A.; Cisternas A., E.; Fuentes V., M.
Publisher
Instituto de Investigaciones Agropecuarias, Chillán, Chile
Citation
Chilean Journal of Agricultural Research, 2009, 69, 3, pp 455-459
AbstractFull Text

The ingestive behaviour of dairy cows grazing L. perenne cv. Quartet with different levels and types of endophyte was evaluated over a 5-month period (Spring-Autumn). The trial was carried out in Osorno, on pastures of L. perenne cv. Quartet with: Low levels of endophytes (BES); endophyte AR1; and...

Author(s)
Soto S., C. A.; López C., I. F.; Balocchi L., O. A.
Publisher
Facultad de Ciencias Agrarias, Universidad Austral de Chile, Valdivia, Chile
Citation
Agro Sur, 2010, 38, 3, pp 222-233
AbstractFull Text

Contradictory results has been found on the effects of soybean supplementation and conjugated linoleic acid (CLA) content in milk on feeding systems based on fresh forage The objective of the study was to evaluate the effect of a dietary supplement with different quantities of extruded whole...

Author(s)
Aviléz, P.; Escobar, P.; Diaz, C.; Fabeck, G. von; Matamoros, R.; García, F.; Alonzo, M.; Delgado-Pertíñez, M.
Publisher
Spanish National Institute for Agricultural and Food Research and Technology (INIA), Madrid, Spain
Citation
Spanish Journal of Agricultural Research, 2012, 10, 2, pp 409-418
AbstractFull Text

Cattle are selective grazers since they only consume some plants or some parts of a plant from the pasture and avoid others. Grazing preference is affected by characteristics of the pasture such as the botanical composition, pasture surface height, herbage mass, phenological stage, digestibility,...

Author(s)
Balocchi, O. A.; López, I. F.; Keim, J. P.
Publisher
New South Wales Department of Primary Industry, Orange, Australia
Citation
Revitalising Grasslands to Sustain our Communities: Proceedings, 22nd International Grassland Congress, 15-19 September, 2013, Sydney, Australia, 2013, pp 1159-1164
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

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