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Abstract

The current study describes productive, reproductive and metabolic performances reached by beef cattle under organic and conventional management. The experiment was carried out in two farms in La Araucanía Region, Chile. Both farms provided six cows and one bull for copulation. The feeding offered...

Author(s)
Contreras, M. J.; Felmer, R.; Letelier, C.
Publisher
Facultad de Ciencias Veterinarias, Universidad del Zulia, Maracaibo, Venezuela
Citation
Revista Cientifica, Facultad de Ciencias Veterinarias, Universidad del Zulia, 2018, 28, 5, pp 375-385
AbstractFull Text

This publication contains eight papers that discuss the following topics: (i) effect of potassium/sodium ratio in the pasture on ingestive behaviour of dairy cows; (ii) water-soluble carbohydrate and nitrogen concentrations after defoliation in perennial ryegrasses (Lolium perenne) in spring; (iii) ...

Publisher
Facultad de Ciencias Agrarias, Universidad Austral de Chile, Valdivia, Chile
Citation
Agro Sur, 2016, 44, 3, pp 1-87
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
Abstract

Perennial ryegrass pastures are the main feed for dairy cows in temperate regions. Alternatives to increase farm sustainability such as naturalized pastures have been proposed, and only limited knowledge exists regarding their potential as a forage source for grazing dairy systems. A field study...

Author(s)
Keim, J. P.; López, I. F.; Balocchi, O. A.
Publisher
Wiley-Blackwell, Oxford, UK
Citation
Grass and Forage Science, 2015, 70, 2, pp 283-295
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

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
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
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

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

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

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