Associations between Theileria orientalis Ikeda type infection and the growth rates and haematocrit of suckled beef calves in the North Island of New Zealand

2018 ◽  
Vol 67 (2) ◽  
pp. 66-73 ◽  
Author(s):  
KE Lawrence ◽  
BL Lawrence ◽  
RE Hickson ◽  
CA Hewitt ◽  
KR Gedye ◽  
...  
Keyword(s):  
New Zealand ◽  
Growth Rates ◽  
Theileria Orientalis ◽  
Beef Calves ◽  
The North ◽  
Type Infection

Field trials on hexoestrol implantation of steers on New Zealand farms

1963 ◽  
Vol 60 (1) ◽  
pp. 87-93 ◽  
Author(s):  
G. C. Everitt ◽  
A. H. Carter
Keyword(s):  
New Zealand ◽  
Growth Rates ◽  
Hormone Treatment ◽  
Field Trials ◽  
Carcass Weight ◽  
Carcass Quality ◽  
Average Response ◽  
The North

Field trials on hexoestrol implantation were conducted in the Waikato area of the North Island of New Zealand during 1958–59, involving 260 two and three year old Aberdeen Angus steers from nine farms. Two levels of hormone implantation were studied, namely, 30 and 45 mg. The trials ranged in duration from three to five months with an average of four months.Pronounced differences were apparent between farms in the overall growth rates and carcass quality scores of the cattle.Hexoestrol implantation led to a significant increase in carcass weight, estimated at approximately 22 lb., with little evidence of real differences between farms in the average response to the hormone.Response to the higher as compared with the lower dose of hexoestrol varied markedly among the separate farms. In general, the lower dose of 30 mg. tended to yield the greater increase in carcass weight.A small, but consistent, depression of carcass quality scores was manifest under hormone treatment, with no real differences between the two dosage levels.

scholarly journals Review of the New Zealand Theileria orientalis Ikeda Type Epidemic and Epidemiological Research since 2012

Pathogens ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 1346
Author(s):  
Kevin Lawrence ◽  
Kristene Gedye ◽  
Andrew McFadden ◽  
David Pulford ◽  
Allen Heath ◽  
...  
Keyword(s):  
New Zealand ◽  
New Disease ◽  
Epidemiological Investigation ◽  
Epidemiological Research ◽  
Theileria Orientalis ◽  
Production Animals ◽  
The Individual ◽  
Cattle Systems ◽  
Almost All ◽  
Type Infection

This article sets out to document and summarise the New Zealand epidemic and the epidemiological research conducted on the epizootic of bovine anaemia associated with Theileria orientalis Ikeda-type infection, which began in New Zealand in August 2012. As New Zealand has no other pathogenic tick-borne cattle haemoparasites, the effects of the T. orientalis Ikeda-type infection observed in affected herds and individual animals were not confounded by other concurrent haemoparasite infections, as was possibly the case in other countries. This has resulted in an unbiased perspective of a new disease. In addition, as both New Zealand’s beef and dairy cattle systems are seasonally based, this has led to a different epidemiological presentation than that reported by almost all other affected countries. Having verified the establishment of a new disease and identified the associated pathogen, the remaining key requirements of an epidemiological investigation, for a disease affecting production animals, are to describe how the disease spreads, describe the likely impacts of that disease at the individual and herd level and explore methods of disease control or mitigation.

scholarly journals Hypovirulent Rhizoctonia spp isolates from New Zealand soils protect radish seedlings against dampingoff caused by R solani

2004 ◽  
Vol 57 ◽  
pp. 54-58 ◽  
Author(s):  
B. Sneh ◽  
E. Yamoah ◽  
A. Stewart
Keyword(s):  
New Zealand ◽  
Rhizoctonia Solani ◽  
Lolium Perenne ◽  
Growth Rates ◽  
Raphanus Sativus ◽  
Soil Samples ◽  
The North ◽  
Screening Experiment ◽  
Radish Seedlings ◽  
North And South

Of the 206 Rhizoctonia spp isolates obtained from 135 soil samples collected from different fields in the North and South Islands of New Zealand 55 were pathogenic on radish (Raphanus sativus cv Rex) seedlings Only 27 of the isolates that were strongly pathogenic on radish were also pathogenic on ryegrass (Lolium perenne) While 13 of the 92 hypovirulent isolates provided gt;50 protection to radish seedlings against dampingoff caused by Rhizoctonia solani in a screening experiment only three provided gt;50 protection in the final more detailed experiment The best protective isolates R8510 and R308 consistently protected approximately 70 of radish seedlings in at least two separate experiments There was no correlation between the growth rates of the hypovirulent Rhizoctonia spp isolates and their percentage protection of radish seedlings against dampingoff

Studies of Ptiliidae (Coleoptera) in the Spirit Collection of the Natural History Museum, London 2: New species and records from P. Hammond's visit to New Zealand in 1983–84

2018 ◽  
Vol 154 (3) ◽  
pp. 179-196
Author(s):  
Michael Darby
Keyword(s):  
New Species ◽  
New Zealand ◽  
Natural History ◽  
Natural History Museum ◽  
History Museum ◽  
The North ◽  
Three New Species ◽  
North And South

Some 2,000 Ptiliidae collected in the North and South Islands of New Zealand in 1983/1984 by Peter Hammond of the Natural History Museum, London, are determined to 34 species, four of which are new to the country. As there are very few previous records, most from the Auckland district of North Island, the Hammond collection provides much new distributional data. The three new species: Nellosana insperatus sp. n., Notoptenidium flavum sp. n., and Notoptenidium johnsoni sp. n., are described and figured; the genus Ptiliodes is moved from Acrotrichinae to Ptiliinae, and Ptenidium formicetorum Kraatz recorded as a new introduction. Information is provided to aid separation of the new species from those previously recorded.

scholarly journals Spatial Distribution of Lichens in Metrosideros excelsa in Northern New Zealand Urban Forests

Diversity ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 170
Author(s):  
Gladys N. Benitez ◽  
Glenn D. Aguilar ◽  
Dan Blanchon
Keyword(s):  
Spatial Distribution ◽  
Species Richness ◽  
New Zealand ◽  
Lichen Species ◽  
Positive Correlation ◽  
Breast Height ◽  
Lichen Community ◽  
The North ◽  
The City ◽  
Lichen Flora

The spatial distribution of corticolous lichens on the iconic New Zealand pōhutukawa (Metrosideros excelsa) tree was investigated from a survey of urban parks and forests across the city of Auckland in the North Island of New Zealand. Lichens were identified from ten randomly selected trees at 20 sampling sites, with 10 sites classified as coastal and another 10 as inland sites. Lichen data were correlated with distance from sea, distance from major roads, distance from native forests, mean tree DBH (diameter at breast height) and the seven-year average of measured NO2 over the area. A total of 33 lichen species were found with coastal sites harboring significantly higher average lichen species per tree as well as higher site species richness. We found mild hotspots in two sites for average lichen species per tree and another two separate sites for species richness, with all hotspots at the coast. A positive correlation between lichen species richness and DBH was found. Sites in coastal locations were more similar to each other in terms of lichen community composition than they were to adjacent inland sites and some species were only found at coastal sites. The average number of lichen species per tree was negatively correlated with distance from the coast, suggesting that the characteristic lichen flora found on pōhutukawa may be reliant on coastal microclimates. There were no correlations with distance from major roads, and a slight positive correlation between NO2 levels and average lichen species per tree.

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