Browsing by Author "Houdijk, J. G. M."
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Changes in food intake and circulating leptin due to gastrointestinal parasitism in lambs of two breeds
Zaralis, K.; Tolkamp, B. J.; Houdijk, J. G. M.; Wylie, A. R. G.; Kyriazakis, I. (2008)HA reduction in food intake is a prominent feature of many infectious diseases. However, the underlying mechanisms of parasite-induced anorexia in sheep are poorly understood. Here, we tested the hypotheses (a) that the ... -
Consequences of infection pressure and protein nutrition on periparturient resistance to Teladorsagia circumcincta and performance in ewes
Kidane, A.; Houdijk, J. G. M.; Tolkamp, B. J.; Athanasiadou, S.; Kyriazakis, I. (2009)The consequences of protein nutrition on the degree of periparturient relaxation of immunity to nematode parasites in sheep may be more pronounced at higher levels of infection pressure. Here, we investigated interactive ... -
The consequences of non-starch polysaccharide solubility and inclusion level on the health and performance of weaned pigs challenged with enterotoxigenic Escherichia coli
Wellock, I. J.; Fortomaris, P. D.; Houdijk, J. G. M.; Wiseman, J.; Kyriazakis, I. (2008)The inclusion of insoluble NSP (iNSP) in weaner pig diets has been reported to decrease post-weaning colibacillosis (PWC). Conversely, soluble NSP (sNSP) have been shown to exacerbate PWC. The present study investigated ... -
Consequences of protein supplementation for anorexia, expression of immunity and plasma leptin concentrations in parasitized ewes of two breeds
Zaralis, K.; Tolkamp, B. J.; Houdijk, J. G. M.; Wylie, A. R. G.; Kyriazakis, I. (2009)The periparturient relaxation of immunity (PPRI) against parasites in ewes has a nutritional basis. We investigated whether ewes experience a reduction in food intake (anorexia) during PPRI and if the magnitude of anorexia ... -
Dietary protein and energy supplies differentially affect resistance to parasites in lactating mammals
Sakkas, P.; Houdijk, J. G. M.; Jones, L. A.; Knox, D. P.; Kyriazakis, I. (2011)Periparturient relaxation of immunity (PPRI) to parasites in mammals results in higher worm burden and worm egg excretion and may have a nutritional basis. Nippostrongylus brasiliensis re-infected lactating rats fed low-crude ... -
Effect of dietary non-starch polysaccharide solubility and inclusion level on gut health and the risk of post weaning enteric disorders in newly weaned piglets
Wellock, I. J.; Houdijk, J. G. M.; Kyriazakis, I. (2007)The objective of this experiment was to investigate the effect of non-starch polysaccharide (NSP) solubility and inclusion rate on gut health and development, performance and risk of post weaning enteric disorders (PWED) ... -
The effect of dietary protein supply on the performance and risk of post-weaning enteric disorders in newly weaned pigs
Wellock, I. J.; Fortomaris, P. D.; Houdijk, J. G. M.; Kyriazakis, I. (2006)The effect of dietary protein supply, as manipulated by both crude protein content and/or substitution of existing ingredients, mainly soya (SOYA), with the more digestible dried skimmed milk powder (DSMP), and the ... -
The effect of weaner diet protein content and diet quality on the long-term performance of pigs to slaughter
Wellock, I. J.; Houdijk, J. G. M.; Miller, A. C.; Gill, B. P.; Kyriazakis, I. (2009)Short and long-term effects of manipulating dietary CP content and diet quality in weaner diets on health and performance of pigs were investigated in a 2 x 2 factorial combination of CP inclusion (high-CP, 230 g of CP/kg ... -
Effect of weaning age, protein nutrition and enterotoxigenic Escherichia coli challenge on the health of newly weaned piglets
Wellock, I. J.; Fortomaris, P. D.; Houdijk, J. G. M.; Kyriazakis, I. (2007)The objective of this experiment was to determine whether decreasing dietary protein content and increasing weaning age could improve piglet health and decrease the occurrence and severity of post-weaning colibacillosis ... -
The effects of changes in nutritional demand on gastrointestinal parasitism in lactating rats
Normanton, H.; Houdijk, J. G. M.; Jessop, N. S.; Knox, D. P.; Kyriazakis, I. (2007)Lactating rats experience a breakdown of immunity to parasites, i.e. they carry larger worm burdens after re-infection compared to their non-lactating counterparts. Feeding high-protein foods to lactating rats results in ... -
Effects of dietary protein supply, weaning age and experimental enterotoxigenic Escherichia coli infection on newly weaned pigs: health
Wellock, I. J.; Fortomaris, P. D.; Houdijk, J. G. M.; Kyriazakis, I. (2008)Weaning is often associated with post-weaning colibacillosis (PWC), caused by enterotoxigenic Escherichia coli (ETEC). The objective was to investigate the effects of manipulating dietary protein supply and increasing ... -
Effects of dietary protein supply, weaning age and experimental enterotoxigenic Escherichia coli infection on newly weaned pigs: performance
Wellock, I. J.; Fortomaris, P. D.; Houdijk, J. G. M.; Kyriazakis, I. (2008)An experiment was conducted to investigate the effects of post-weaning dietary protein supply and weaning age on the performance of pigs in the absence of in-feed antimicrobial growth promoters (AGP) when artificially ... -
Effects of maternal protein nutrition and subsequent grazing on chicory (Cichorium intybus) on parasitism and performance of lambs
Kidane, A.; Houdijk, J. G. M.; Athanasiadou, S.; Tolkamp, B. J.; Kyriazakis, I. (2010)Forty-eight 4- to 5-yr-old Blackface x Bluefaced Leicester (Mule) ewes and their 24-d-old twin lambs were used to assess the effects of maternal protein nutrition and subsequent grazing on chicory (Cichorium intybus) on ... -
Effects of nematode infection on anorexia and leptin levels in lambs of two breeds
Zaralis, K.; Tolkamp, B. J.; Houdijk, J. G. M.; Wylie, A. R. G.; Kyriazakis, I. (2007)The objective of this study was to investigate whether breed differences in production potential are associated with differences in the occurrence of anorexia following a nematode infection and whether plasma leptin ... -
Effects of sub-clinical post-weaning colibacillosis and dietary protein on acute phase proteins in weaner pigs
Houdijk, J. G. M.; Campbell, F. M.; Fortomaris, P. D.; Eckersall, P. D.; Kyriazakis, I. (2007)There is an increasing body of evidence that plasma acute phase proteins (APP) can be used as a marker to assess pig health. The objective of this study was to assess whether experimentally induced sub-clinical post-weaning ... -
Genetic growth potential interacts with nutrition on the ability of mice to cope with Heligmosomoides bakeri infection
Coltherd, J. C.; Bnger, L.; Kyriazakis, I.; Houdijk, J. G. M. (2009)Artificial selection for improved productivity may reduce an animal's ability to cope with pathogens. Here, we used Roslin mice, uniquely divergently selected for high (ROH) and low (ROL) body weight, to assess interactive ... -
Genome-Wide Transcriptomic Analysis of Intestinal Tissue to Assess the Impact of Nutrition and a Secondary Nematode Challenge in Lactating Rats
Athanasiadou, S.; Jones, L. A.; Burgess, S. T. G.; Kyriazakis, I.; Pemberton, A. D.; Houdijk, J. G. M.; Huntley, J. F. (2011)Background: Gastrointestinal nematode infection is a major challenge to the health and welfare of mammals. Although mammals eventually acquire immunity to nematodes, this breaks down around parturition, which renders ... -
Immunomodulatory effects of dietary protein during Nippostrongylus brasiliensis re-infection in lactating rats
Jones, L. A.; Houdijk, J. G. M.; Knox, D. P.; Kyriazakis, I. (2009)Periparturient relaxation of immunity (PPRI) to secondary infection with nematodes is believed to have a nutritional basis due to differential partitioning of scarce nutrient resources, particularly protein, to reproductive ... -
Nutritional sensitivity of mucosal immune responses to Nippostrongylus brasiliensis in the lactating rat
Jones, L. A.; Houdijk, J. G. M.; Knox, D. P.; Kyriazakis, L. (2008) -
Nutritional sensitivity of resistance to Trichostrongylus colubriformis in lactating ewes
Houdijk, J. G. M.; Jackson, F.; Kyriazakis, I. (2009)It has been suggested that the periparturient breakdown of immunity to parasites has a nutritional basis. Our overall hypothesis is that it results from a prioritized scarce metabolizable protein (MP) allocation to ...