A circulating cooling system based on a commercial G-3 helium liquifier

Dinaburg, L.B.; Fokeev, V.F; Shelgunov, G.Ya.

doi:10.1016/0011-2275(78)90007-3

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“…The technique which was used in the first experiment, in which infective larvae were seeded onto pasture divided into plots by metal strips, or segregated in some other way, has been commonly used in ecological studies (Taylor 1938;Kauzal 1941;Dinaburg 1944;Crofton 1948a,b;Andersen et af 1970;Ogbourne 1973). The validity of this and similar techniques has been discussed by Rogers and Somerville (1963) , Donald (1967), Ollerenshaw and Smith (1969) and Michel (1976); the method provides data which complements studies on the development, survival and migration of parasitic larvae in faeces and on herbage (English 1979).…”

Section: Discussionmentioning

confidence: 99%

THE EPIDEMIOLOGY OF EQUINE STRONGYLOSIS IN SOUTHERN QUEENSLAND 2. The Survival and Migration of Infective Larvae on Herbage

English

1979

Aust Veterinary J

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The seasonal changes in longevity on herbage of the infective larvae of strongylid nematodes of the horse were studied. During the summer months, 1% of the larvae survived on herbage for 2-3 weeks, with 0.2% still viable for a further 2-3 weeks. Equivalent survival periods in winter were 7-11 weeks and over 11 weeks respectively. During spring and autumn, larvae survived for periods varying from 3-8 weeks. On Rhodes grass (Chloris gayana) growing vigorously in the summer of 1976, the majority of larvae remained in the lowest layers of the pasture, within 10 cm of the soil surface. Very few reached the highest fraction of grass sampled, above 40 cm from the soil. More larvae were recovered higher on the pasture in a period when less torrential rain had occurred. It was concluded that the parasitological benefits to be gained from short-term mixed grazing with horses and cattle may be minimal, in view of the tendency of cattle to eat only the upper layers of the pasture initially, with a consequent increase in the number of infective larvae per unit weight of herbage remaining.

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Section: Discussionmentioning

confidence: 99%

THE EPIDEMIOLOGY OF EQUINE STRONGYLOSIS IN SOUTHERN QUEENSLAND 2. The Survival and Migration of Infective Larvae on Herbage

English

1979

Aust Veterinary J

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show abstract

A circulating cooling system based on a commercial G-3 helium liquifier

Cited by 1 publication

References 1 publication

THE EPIDEMIOLOGY OF EQUINE STRONGYLOSIS IN SOUTHERN QUEENSLAND 2. The Survival and Migration of Infective Larvae on Herbage

THE EPIDEMIOLOGY OF EQUINE STRONGYLOSIS IN SOUTHERN QUEENSLAND 2. The Survival and Migration of Infective Larvae on Herbage

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