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Abstract

Author(s)
Nilsson, O.
Citation
Svensk Veterinar Tidning, 1971, 23, 10, pp 409-414
Abstract

In Sweden Ostertagia ostertagi and Cooperia oncophora are the most common gastro-intestinal nematodes of young cattle. The infective larvae overwinter on the pastures. Herbage infestation is frequently heavy in May, when the animals are turned out. The number of larvae then falls to a low level at...

Author(s)
Nilsson, O.; Sorelius, L.
Citation
Nordisk Veterinaermedicin, 1973, 25, No.2, pp 65-78
Abstract

Author(s)
Persson, L.
Citation
Proceedings of the 12th Nordic Veterinary Congress, Reykjavik, 7-10 August 1974., 1974, pp 246
Abstract

Author(s)
Nilsson, O.; Holm, G.
Citation
Proceedings of the 12th Nordic Veterinary Congress, Reykjavik, 7-10 August 1974., 1974, pp 247
Abstract

The stomachs of 109 cattle naturally infected with Ostertagia were examined, at the latest two days after slaughter to assess the parasite population. Estimation was by means of pepsin digestion (37 deg C; pH <2). Of the total number of Ostertagia isolated (2.368 X 105) in April, 2.35 X 105 (99.24%) were L4-inhibited larvae. Of the 109 specimens, the Ostertagia distribution was as follows: <104, 81 (74%); 1 X 104 - 3 X 104, 16 (15%); 3 X 104 - 1 X 105, 10 (9%); >1 X 105, 2 (2%). The maximum number of Ostertagia and inhibited parasites was found during ...

Author(s)
Olsson, G.
Citation
Svensk Veterinartidning, 1977, 29, 9, pp 361-365
Abstract

Metabolic studies on cows with type-II ostertagiasis were performed. Plasma pepsinogen levels increased during March and April, in 10 animals showing poor growth, from 1.5 to 2.25 units tyrosine concomitant with an initial rise in faecal egg counts in March (to about 50 e.p.g.) followed by a fall...

Author(s)
Olsson, G.; Holtenius, P.; Haroldsson, I.
Citation
Svensk Veterinar Tidning, 1978, 30, 11, pp 453-459
Abstract

Ivermectin (Ivomec) at 0.2 mg/kg body weight, given by s.c. injection to calves 17 days after turn out onto infested permanent pasture and again 5 weeks later, gave better control of Ostertagia ostertagi and Cooperia oncophora than treatment at the time of turn out and 5 weeks later.

Author(s)
Wallgren, T. B.
Citation
Svensk Veterinärtidning, 1988, 40, 6, pp 321-325
Abstract

The prevalence of gastrointestinal parasites and lungworm was studied in beef-suckler calves. Samples of faeces and blood were obtained from 10 calves in each of 5 organic and 7 conventional herds. Sampling was performed around weaning in the late grazing period, between 19 August and 27 October...

Author(s)
Viring, S.; Bengtsson, B.; Christensson, D.
Publisher
Sveriges Veterinärförbund, Stockholm, Sweden
Citation
Svensk Veterinärtidning, 2001, 53, 8/9, pp 441-445