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Institution

Agriculture and Agri-Food Canada

FacilityOttawa, Ontario, Canada
About: Agriculture and Agri-Food Canada is a facility organization based out in Ottawa, Ontario, Canada. It is known for research contribution in the topics: Population & Soil water. The organization has 10921 authors who have published 21332 publications receiving 748193 citations. The organization is also known as: Department of Agriculture and Agri-Food.
Topics: Population, Soil water, Manure, Tillage, Loam


Papers
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Journal ArticleDOI
TL;DR: This article reviews the most important vector-borne parasites of zoonotic concern that are changing/expanding their distribution patterns in both endemic and/or previously non-endemic areas, including the changing aspects of malaria, leishmaniasis, babesiosis, Chagas disease as well as of some spirurid and filarioid nematodes.

202 citations

Journal ArticleDOI
TL;DR: Cows milked alone in an unfamiliar room showed signs of acute stress and gave less milk due to higher residual milk and reduced oxytocin secretion, but had no effect on milk yield or hormonal responses.

202 citations

Journal ArticleDOI
TL;DR: Most of the SNP that showed associations with growth, feed efficiency, and carcass merit in beef steers do not cause amino acid changes, but these SNP could be linked to other yet to be detected causative mutations or nearby QTL.
Abstract: Genes that regulate metabolism and energy partitioning have the potential to influence economically important traits in farm animals, as do polymorphisms within these genes. In the current study, SNP in the bovine neuropeptide Y (NPY), growth hormone receptor (GHR), ghrelin (GHRL), uncoupling proteins 2 and 3 (UCP2 and UCP3), IGF2, corticotrophin-releasing hormone (CRH), cocaine and amphetamine regulated transcript (CART), melanocortin-4 receptor (MC4R), proopiomelanocortin (POMC), and GH genes were evaluated for associations with growth, feed efficiency, and carcass merit in beef steers. In total, 24 SNP were evaluated for associations with these traits and haplotypes were constructed within each gene when 2 or more SNP showed significant associations. An A/G SNP located in intron 4 of the GHR gene had the largest effects on BW of the animals (dominance effect P < 0.01) and feed efficiency (allele substitution effect P < 0.05). Another A/G SNP located in the promoter region of GHR had similar effects but the haplotypes of these 2 SNP reduced the effects of the SNP located in intron 4. Three SNP in the NPY gene showed associations to marbling (P < 0.001) as well as with ADG, BW, and feed conversion ratio (FCR; P < 0.05). The combination of these 3 SNP into haplotypes generally improved the association or had a similar scale of association as each single SNP. Only 1 SNP in UCP3, an A/G SNP in intron 3, was associated with ADG (P = 0.025), partial efficiency of growth, and FCR (P < 0.01). Three SNP in UCP2 gene were in almost complete linkage disequilibrium and showed associations with lean meat yield, yield grade, DMI, and BW (P < 0.05). Haplotypes between the SNP in UCP3 and UCP2 generally reduced the associations seen individually in each SNP. An A/G SNP in the GHRL gene tended to show effects on residual feed intake, FCR, and partial efficiency of growth (P < 0.10). The IGF2 SNP most strongly affected LM area (P < 0.01), back fat, ADG, and FCR (P < 0.05). The SNP in the CART, MC4R, POMC, GH, and CRH genes did not show associations at P < 0.05 with any of the traits. Although most of the SNP that showed associations do not cause amino acid changes, these SNP could be linked to other yet to be detected causative mutations or nearby QTL. It will be very important to verify these results in other cattle populations.

201 citations

Journal ArticleDOI
TL;DR: It is suggested that the trichothecenes may act as virulence factors to enhance the spread of F. graminearum on maize and appear less virulent on maize than the trICHothecene-producing progenitor and revertant strains, as assayed by most parameters.
Abstract: Trichothecene-producing and -nonproducing Fusarium graminearum strains were tested for their ability to cause Gibberella ear rot in field trials at two locations-Ottawa, Ontario, and Peoria, Illinois-in 1996. Maize ears were inoculated with wild-type or transgenic F. graminearum strains in which the trichothecene biosynthetic pathway had been disabled by the specific disruption of the trichodiene synthase gene and with a derivative revertant strain in which trichothecene production had been restored through recombination. A silk channel inoculation method was employed at both locations. In addition, a kernel puncture inoculation method was used at the Ontario location. Harvested maize ears were analyzed for visual disease severity, grain yield, deoxynivalenol (DON) concentration, and fungal biomass by quantitative polymerase chain reaction (PCR) and/or ergosterol quantitation. There was a significant correlation (r= 0.86) between data obtained from the two different methods of quantifying fungal biomass. The trichothecene-nonproducing strains were still pathogenic but appeared less virulent on maize than the trichothecene-producing progenitor and revertant strains, as assayed by most parameters. This suggests that the trichothecenes may act as virulence factors to enhance the spread of F. graminearum on maize.

201 citations

Journal ArticleDOI
TL;DR: The observed acidification of soils with fertilizer application will also contribute to metal solubilisation, and the high Zn to Cd ratio is presumably responsible for the Cd increase in the soil extracts due to competitive displacement by Zn.

201 citations


Authors

Showing all 10964 results

NameH-indexPapersCitations
Fereidoon Shahidi11995157796
Miao Liu11199359811
Xiang Li97147242301
Eviatar Nevo9584840066
Tim A. McAllister8586232409
Hubert Kolb8442025451
Daniel M. Weary8343722349
Karen A. Beauchemin8342322351
Nanthi Bolan8355031030
Oene Oenema8036123810
Santosh Kumar80119629391
Yueming Jiang7945220563
Denis A. Angers7625619321
Tong Zhu7247218205
Christophe Lacroix6935315860
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202314
202282
20211,078
20201,035
2019992
2018988