Results 181 to 190 of about 81,175 (239)
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Reviews on Environmental Health, 1979
The study of bracken carcinogenicity affords an interesting example of the close alliance, with mutual benefit, between the work of veterinarians in the field and experimental research. On the one hand was the condition found in many parts of the world of bovine enzootic haematuria with uncertain aetiology and, on the other, the investigations ...
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The study of bracken carcinogenicity affords an interesting example of the close alliance, with mutual benefit, between the work of veterinarians in the field and experimental research. On the one hand was the condition found in many parts of the world of bovine enzootic haematuria with uncertain aetiology and, on the other, the investigations ...
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Reproduction of acute bracken poisoning in a calf with ptaquiloside, a bracken constituent
Veterinary Record, 1984Acute bracken fern toxicity in a calf was reproduced with ptaquiloside, a norsesquiterpene glucoside, isolated from the boiling water extract of bracken fern. Ptaquiloside was dissolved in 500 ml of saline and administered by drench at increasing dosages for six days out of every seven for the following periods: 400 mg/day for 24 days, 800 mg/day for ...
I, Hirono +8 more
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Control of Bracken and the Restoration of Heathland. I. Control of Bracken
The Journal of Applied Ecology, 19921. This paper examines the effectiveness of a range of bracken control and heathland restoration treatments on bracken performance and the redevelopment of heath vegetation over a 10-year period on a Callunaand a grass-heath in Breckland. Initial treatments were a combination of cutting and spraying with asulam, with and without sowing seeds of ...
J. E. Lowday, R. H. Marrs
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Veterinary Record, 2015
Bracken poisoning in cattle: a classic case in 15‐month‐old‐cattle Chlamydia abortus as the cause of abortion in a dairy cow
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Bracken poisoning in cattle: a classic case in 15‐month‐old‐cattle Chlamydia abortus as the cause of abortion in a dairy cow
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Livestock, 2023
Bracken (Pteridium species) is an ancient, large and very widespread fern that has long been recognised as poisonous. It contains several toxic compounds including ptaquiloside and thiaminase. Bracken toxicosis manifests as different clinical syndromes in different animals. Cattle develop an acute haemorrhagic syndrome leading to widespread haemorrhage
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Bracken (Pteridium species) is an ancient, large and very widespread fern that has long been recognised as poisonous. It contains several toxic compounds including ptaquiloside and thiaminase. Bracken toxicosis manifests as different clinical syndromes in different animals. Cattle develop an acute haemorrhagic syndrome leading to widespread haemorrhage
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Botanical Journal of the Linnean Society, 1976
Mechanical methods of bracken control are now being replaced by the use of chemicals. Trials indicate the value of asulam and glyphosate in reducing frond numbers of bracken when sprayed in late July or early August in the west of Scotland. There is still a need to find a bracken eradicant chemical rather than a control chemical.
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Mechanical methods of bracken control are now being replaced by the use of chemicals. Trials indicate the value of asulam and glyphosate in reducing frond numbers of bracken when sprayed in late July or early August in the west of Scotland. There is still a need to find a bracken eradicant chemical rather than a control chemical.
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Proceedings of the Royal Society of Edinburgh. Section B. Biological Sciences, 1982
SynopsisBracken grows on sites very suitable for forest tree growth allowing a wide choice of tree species. However, the trend in afforestation is towards poorer soils and the area of bracken land being planted is declining. Bracken will damage young trees and methods of its control are reviewed.
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SynopsisBracken grows on sites very suitable for forest tree growth allowing a wide choice of tree species. However, the trend in afforestation is towards poorer soils and the area of bracken land being planted is declining. Bracken will damage young trees and methods of its control are reviewed.
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The Lancet, 1990
An experiment in which spores suspended in water were administered by oral gavage without anaesthesia to young weanling mice (both sexes, two strains) gave the following results. Of 98 mice, most of which received 200 mg of spores, malignant disease developed in 53.
I.Antice Evans, O.P Galpin
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An experiment in which spores suspended in water were administered by oral gavage without anaesthesia to young weanling mice (both sexes, two strains) gave the following results. Of 98 mice, most of which received 200 mg of spores, malignant disease developed in 53.
I.Antice Evans, O.P Galpin
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Proceedings of the Royal Society of Edinburgh. Section B. Biological Sciences, 1982
SynopsisThere is a high incidence of cancer in beef cows in certain sharply localised geographic calf-rearing areas in Britain and also in cattle in several other parts of the world. The tumours occur on farms which are highly infested with bracken fern and which have a history of bracken poisoning.
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SynopsisThere is a high incidence of cancer in beef cows in certain sharply localised geographic calf-rearing areas in Britain and also in cattle in several other parts of the world. The tumours occur on farms which are highly infested with bracken fern and which have a history of bracken poisoning.
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Outlook on Agriculture, 1959
For centuries bracken has robbed the grazier of thousands of acres of land that might otherwise be converted into good permanent pasture. Ploughing is usually impracticable on the moors and hills where the weed is at its worst, and neither cutting nor treatment with contact herbicides has a lasting effect.
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For centuries bracken has robbed the grazier of thousands of acres of land that might otherwise be converted into good permanent pasture. Ploughing is usually impracticable on the moors and hills where the weed is at its worst, and neither cutting nor treatment with contact herbicides has a lasting effect.
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