Irish Journal of Agricultural & Food Research, volume 52(2), 2013 http://hdl.handle.net/11019/481 2017-11-07T00:32:09Z 2017-11-07T00:32:09Z Power, C. Sayers, Riona O'Brien, Bernadette Furey, A. Danaher, Martin Kieran, Jordan http://hdl.handle.net/11019/535 2014-05-26T14:18:01Z 2013-01-01T00:00:00Z

Title: Review of studies on flukicide residues in cows’ milk and their transfer to dairy products Authors: Power, C.; Sayers, Riona; O'Brien, Bernadette; Furey, A.; Danaher, Martin; Kieran, Jordan Abstract: Flukicides are widely used to treat infestations of liver fluke in dairy cattle. This could result in flukicide residues in milk if animals are improperly treated or if withdrawal periods are not properly observed. The purpose of this review is to summarise the results of studies on depletion of flukicides from milk and the transfer of flukicide residues to dairy products, if present in the milk. As the depletion of flukicide residues from milk of animals treated during lactation was relatively slow, the studies support the view that the dry period (when milk is not being used for human consumption) is the most suitable time for flukicide treatment. Migration of residues to product occurred at different rates, depending on the drug in question. Generally, concentration of flukicides occurred in cheese, butter and skim milk powder. Pasteurisation or heat treatment during spray drying had no impact in reducing residues. Description: peer-reviewed; This work was supported by The Dairy Levy Research Trust. Clare Power was in receipt of a Teagasc Walsh Fellowship.

2013-01-01T00:00:00Z Power, C. Sayers, Riona O'Brien, Bernadette Furey, A. Danaher, Martin Jordan, Kieran http://hdl.handle.net/11019/534 2014-11-26T16:55:01Z 2013-01-01T00:00:00Z

Title: Protocols and strategies to study the migration of veterinary drug residues into milk and dairy products in licensed trials Authors: Power, C.; Sayers, Riona; O'Brien, Bernadette; Furey, A.; Danaher, Martin; Jordan, Kieran Abstract: In the interest of animal welfare, and in order that the results from animal trials are considered valid for inclusion in the development of regulations, it is necessary that such trials are undertaken in accordance with the appropriate licensing arrangements. In January 2013, new licensing arrangements were introduced in the European Union. The aim of this paper is to outline the legislative strategy required for obtaining licences for animal trials and based on live animal trials with flukicides, establishes a blueprint for obtaining the appropriate licences and undertaking the experiments. Description: peer-reviewed; A Corrigendum to this article was later published. It is available at http://hdl.handle.net/11019/749

2013-01-01T00:00:00Z Danaher, Martin Jordan, Kieran http://hdl.handle.net/11019/533 2014-02-21T02:01:20Z 2013-01-01T00:00:00Z

Title: Identification of existing and emerging chemical residue contamination concerns in milk Authors: Danaher, Martin; Jordan, Kieran Abstract: In order to maintain the quality of Irish milk and meet increasingly demanding specifications, it is necessary to focus on chemical residues in milk, in addition to other quality issues. The objective of the work was to assess the current status of chemical contaminant analysis and to identify technological and knowledge needs. This was achieved through a review of literature with respect to chemical contaminants. Quaternary ammonium compounds (QACs) have been identified as an area of concern for the dairy industry because of the recent reports of QAC residues in dairy products internationally. Analytical support to analyse QAC residues in milk and dairy products on an ongoing basis is required. Furthermore, the source of QAC residues along the milk production chain needs to be identified. Similarly, analytical support and research is needed in the area of phthalates, to support the development of intervention strategies to reduce contamination, if present. Cephalosporin antibiotics have been a concern for the dairy industry because of the lack of suitable chemical tests to measure these substances. Description: peer-reviewed; The authors gratefully acknowledge funding for this work from the Department of Agriculture, Fisheries and Food under the Joint FIRM/RSF Initiative (Project Number: 10/RD/AAQUALITYMILK/ TMFRC713).

2013-01-01T00:00:00Z Sheehan, Jeremiah J http://hdl.handle.net/11019/532 2017-08-02T10:43:32Z 2013-01-01T00:00:00Z

Title: Milk quality and cheese diversification Authors: Sheehan, Jeremiah J Abstract: Abolition of EU milk quotas in 2015 is projected to result in a 2.75 billion litre increase in Irish milk production by 2020. Although cheese offers vital market opportunities for this increased milk production, traditional cheese markets such as Cheddar, are predicted to grow more slowly than for other semi-soft and semi-hard cheese types. Innovation is now focused on achieving greater diversity in cheese types manufactured on Irish commercial plants and on development of new products with specific properties for target markets. This innovation is best illustrated by the current Teagasc – Irish Dairy Board collaboration. This review considers the relative influence of milk quality on diversification of the portfolio of cheeses manufactured from a seasonally-produced Irish milk supply with particular reference to milk microbial profile and to milk enzyme complement for the manufacture and ripening of non-Cheddar cheese varieties. Description: peer-reviewed

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