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Abstract

Targeted-selective treatments against gastrointestinal nematode (GIN) in adult dairy cows require the identification of "cows to treat", i.e. cows whose milk production (MP) would increase after treatment. This study aimed at quantifying the ability of multi-indicator profiles to identify such...

Author(s)
Ravinet, N.; Lehebel, A.; Bareille, N.; Lopez, C.; Chartier, C.; Chauvin, A.; Madouasse, A.
Publisher
Elsevier B. V., Amsterdam, Netherlands
Citation
Veterinary Parasitology, 2017, 237, pp 17-29
Abstract

An experiment investigated whether the inclusion of chicory (Cichorium intybus) in swards grazed by beef steers altered their performance, carcass characteristics or parasitism when compared to steers grazing perennial ryegrass (Lolium perenne). Triplicate 2-ha plots were established with a...

Author(s)
Marley, C. L.; Fychan, R.; Davies, J. W.; Scollan, N. D.; Richardson, R. I.; Theobald, V. J.; Genever, E.; Forbes, A. B.; Sanderson, R.
Publisher
Public Library of Sciences (PLoS), San Francisco, USA
Citation
PLoS ONE, 2014, 9, 1, pp e86259
Abstract

To investigate future tools for targeted selective treatment against gastrointestinal nematodes (GIN) in adult dairy cows, we evaluated herd and individual cow factors associated with the post-treatment milk production (MP) response over time. A field trial involving 20 pasturing dairy herds in...

Author(s)
Ravinet, N.; Bareille, N.; Lehebel, A.; Ponnau, A.; Chartier, C.; Chauvin, A.
Publisher
Elsevier B. V., Amsterdam, Netherlands
Citation
Veterinary Parasitology, 2014, 201, 1/2, pp 95-109
Abstract

Development of resistance to anthelmintic drugs has motivated the search for diagnostic methods to identify animals for targeted selective treatments. We compared three methods for the diagnosis of nematode infection in relation to milk production in a fully grazing dairy herd of 150 cows in the...

Author(s)
Mejía, M. E.; Perri, A. F.; Licoff, N.; Miglierina, M. M.; Cseh, S.; Ornstein, A. M.; Becu-Villalobos, D.; Lacau-Mengido, I. M.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Veterinary Parasitology, 2012, 183, 1/2, pp 174-177
Abstract

The dynamics of faecal egg counts and the levels of serum pepsinogen were studied in naturally infected cattle of different ages grazing mountainous areas. The pattern of worm egg output was characterized by a progressive increase reaching a maximum around July. Between September and October a...

Author(s)
Almería, S.; Uriarte, J.
Citation
Medicina Veterinaria, 1999, 16, 6, pp 340-346
Abstract

Abomasa, blood samples and faecal samples for examination of nematode infections were collected from 125 dairy cows between November 1997 and October 1998. Of these, 12 had no grazing history and were therefore excluded from the study. Of the remaining 113, 88.5% had nematode eggs in their faeces....

Author(s)
Borgsteede, F. H. M.; Tibben, J.; Cornelissen, J. B. W. J.; Agneessens, J.; Gaasenbeek, C. P. H.
Citation
Veterinary Parasitology, 2000, 89, 4, pp 287-296
Abstract

In autumn 2000, a study was carried out on 25 dairy farms in the vicinity of Utrecht (Netherlands) with the aim to estimate infectivity levels for nematode parasites in cows. On each farm, faecal samples were collected from 15 cows, blood samples from 5 of these and herbage samples from 2 cow...

Author(s)
Eysker, M.; Aarle, D. van; Kooyman, F. N. J.; Nijzink, A. M.; Orsel, K.; Ploeger, H. W.
Publisher
Elsevier Science B.V., Amsterdam, Netherlands
Citation
Veterinary Parasitology, 2002, 110, 1/2, pp 93-100
Abstract

Blood gastrin and pepsinogen responses to a single infection with 100 000 O. ostertagi infective larvae in lactating dairy cows were investigated. None of the 5 infected cows showed signs of clinical ostertagiasis, nor was there any difference in live weight gain, milk yield or faecal egg count...

Author(s)
Pitt, S. R.; Fox, M. T.; Gerrelli, D.; Jacobs, D. E.
Citation
Research in Veterinary Science, 1988, 45, 1, pp 130-131
Abstract

The mean pepsinogen concentration in serum of 27 yearling heifers was 44 plus or minus 12 (SD) ng/ml (2200 mU tyrosine/ml), and in blood of 50 lactating cows was 20 plus or minus 8 mg/ml (1400 mU of tyrosine/ml). There was no correlation between serum pepsinogen concentrations and counts of...

Author(s)
Harvey-White, J. D.; Smith, J. P.; Parbuoni, E.; Allen, E. H.
Citation
American Journal of Veterinary Research, 1983, 44, 1, pp 115-117
Abstract

Plasma pepsinogen estimation was carried out monthly from April to September 1974 on a group of healthy cows and calves which were grazing on pastures naturally infected by relatively small numbers of Ostertagia ostertagi. Their pepsinogen levels were compared with those found in serum samples from ...

Author(s)
Chiejina, S. N.
Citation
Veterinary Record, 1978, 103, 13, pp 278-281

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