James CullenSouth East Technological University Waterford
James Cullen
PhD BSc
About
7
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Introduction
My research focuses on improving the health and growth of liquid-fed pigs by assessing the microbial quality of liquid feed for pigs and its influence on the pig gut microbiome and mycobiome
Publications
Publications (7)
Poor feeding system hygiene may contribute to uncontrolled spontaneous fermentation in liquid pig feed and its associated undesirable effects. This study aimed to determine the effects of an intensive sanitisation programme in a grow-finisher liquid feeding system by monitoring microbiological and physico-chemical parameters of liquid feed and micr...
This study examined the effects of maternal and/or post-weaning Bacillus altitudinis supplementation on the microbiota in sow colostrum and faeces, and offspring digesta and faeces. Sows (n = 12/group) were assigned to: (1) standard diet (CON), or (2) CON supplemented with probiotic B. altitudinis spores (PRO) from day (d)100 of gestation to weanin...
Efficient cell lysis is critical for the extraction of DNA from difficult-to-lyse microorganisms such as Gram-positive bacteria and filamentous fungi. A bead-beating (BB) step is usually included in DNA extraction protocols to improve cell lysis. However, there is no consensus on the duration of BB that is necessary for complete lysis of the microb...
The gut microbiome plays a fundamental role in regulating pig health and growth. Understanding the functions performed by the microbiome is vital when considering it as a target to improve pig health and growth, a pursuit driven by the increasing regulation of traditional means of disease control and growth promotion. This chapter explores the stru...
Abstract: There is evidence that spontaneous fermentation frequently occurs in liquid pig feed that is intended to be delivered as fresh liquid feed, often with a resultant deterioration in the microbial and nutritional quality of the feed, which can negatively affect pig health and growth. Strategies including controlled fermentation with microbia...
This study aimed to determine the impact of fermenting the cereal fraction of the diet (Cferm) and enzyme supplementation (ENZ) on the bacterial composition of the feed, nutrient digestibility, pig growth, feed efficiency (FE), intestinal volatile fatty acid (VFA) concentrations and intestinal microbiota composition. A total of 252 grow-finisher pi...