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Influence of treatment and refrigeration time on antimicrobial activity of goat and sheep colostrum

Published online by Cambridge University Press:  14 November 2019

Maria D. Ruiz-Diaz ,
Anastasio Argüello ,
Daniel Padilla ,
Bernadette Earley  and
Noemi Castro
Maria D. Ruiz-Diaz
Affiliation:
Animal Production and Biotechnology Group, Institute of Animal Health and Food Safety, Universidad de Las Palmas de Gran Canaria, Arucas, Las Palmas, Spain
Anastasio Argüello*
Affiliation:
Animal Production and Biotechnology Group, Institute of Animal Health and Food Safety, Universidad de Las Palmas de Gran Canaria, Arucas, Las Palmas, Spain
Daniel Padilla
Affiliation:
Instituto Universitario de Sanidad Animal y Seguridad Alimentaria, Universidad de Las Palmas de Gran Canaria, Las Palmas, Spain
Bernadette Earley
Affiliation:
Animal & Grassland Research and Innovation Centre, Teagasc, Grange, Dunsany, Co. Meath, Ireland
Noemi Castro
Affiliation:
Animal Production and Biotechnology Group, Institute of Animal Health and Food Safety, Universidad de Las Palmas de Gran Canaria, Arucas, Las Palmas, Spain
*
Author for correspondence: Anastasio Argüello, Email: tacho@ulpgc.es
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Abstract

The aim of the studies presented in this research communication was to compare species of origin (goat and sheep) and the effect of treatment (pasteurization at 56, 63 and 72 °C, skimming and curding) and refrigeration time on colostrum antimicrobial activity (AnAc). Two experiments were performed. In experiment 1, twenty-four first milking colostrum samples were obtained (12 goats, 12 sheep) and an aliquot of each sample was subjected to 6 different treatments, control (untreated), pasteurization at 56, 63 and 72 °C, skimming and curding. Colostrum AnAc was tested directly against E. coli using disks in a Petri dish and Enrofloxacin (antibiotic) and saline serum as positive and negative control, respectively. Species had no effect (P > 0.05) on colostrum AnAc, and neither did pasteurization at different temperatures or skimming. However, curding showed the lowest colostrum AnAc (P < 0.05) in both species. In the second experiment, four treatments were assayed, control, pasteurization at 56 and 63 °C and skimming. An aliquot of twelve goat colostrum samples were refrigerated after treatments for 10 d at 4 °C. Colostrum AnAc was measured at 0, 2, 4, 6, 8, and 10 d. A reduction in colostrum AnAc was observed due to refrigeration time. The results suggest that if farmers use frozen colostrum for neonates, the process of curding colostrum or refrigeration at 4 °C longer than 4 d is not recommended.

Keywords

Antimicrobial activitycolostrumgoatpasteurizationsheep
Type
Research Article
Information
Journal of Dairy Research , Volume 86 , Issue 4 , November 2019 , pp. 450 - 453
Copyright
Copyright © Hannah Dairy Research Foundation 2019

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Footnotes

*

Present address: Faculty of Medicine and Health Sciences, School of Veterinary Medicine and Science, University of Nottingham, UK

†

Present address: Animal & Grassland Research and Innovation Centre, Teagasc, Grange, Dunsany, Co. Meath, Ireland

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