Stephen MansbridgeHarper Adams University | HAUC
Stephen Mansbridge
Doctor of Philosophy
About
54
Publications
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Introduction
Registered animal scientist accredited by the British Society of Animal Science and Senior Lecturer in Animal Science and Bioinformatics at Harper Adams University. An AMTRA qualified animal medicines advisor (all species), with a background in agriculture and specialist interests in animal health and non-ruminant nutrition. Research interests in animal production systems, health, welfare and veterinary medicines.
Additional affiliations
November 2015 - present
November 2015 - September 2017
October 2015 - present
Education
February 2012 - May 2017
September 2009 - September 2010
June 2008 - July 2008
Publications
Publications (54)
1. This study assessed the addition of dried stinging nettle (SN) leaves at 0%, 2.5% and 5.0% in feed on egg production, egg quality, chemical composition and antioxidant content in eggs from laying hens. 2. Seventy-two Hy-Line Brown laying hens, housed in 36 enriched layer cages, were used in the study from 43 to 47 weeks of age. Feeding dry SN le...
An experiment was conducted to determine the apparent metabolizable energy (AME) and nitrogen-corrected AME (AMEn) of defatted black soldier fly larvae meal (BSM), full-fat dry larvae meal (BSL), and larvae fat (LF) for broiler chickens. The BSM, BSL, and LF contained on a g/kg basis, respectively, crude protein, 459, 399, 0; crude fat, 171, 240, 9...
The study aimed to quantify carcass fat and protein retention, and the efficiency of carcass energy utilization (Kre) resulting from feeding broiler chickens diets containing wheat, maize or mixtures of both as the major cereal ingredient. The apparent metabolizable energy (AME) of the four cereal samples was determined in adult cockerels. There wa...
1. The study evaluated the effect of dietary metabolisable energy (ME) content and crude protein (CP) level on the growth performance and behaviour of ducks.2. A total of 720, Cherry Valley ducks were allocated to 36 pens in groups of 20 birds. For the initial period, from 1 to 21 d age, six diets, containing a standard (SME), low (LME) and high (H...
Simple Summary
Epidemiological research indicates that low blood plasma levels of high-density lipoprotein (HDL) and increased levels of low-density lipoprotein (LDL) are associated with an increased risk of cardiovascular diseases in humans. Yet, the impact of blood lipids on the health and wellbeing of poultry is not fully understood. This resear...
The production of soybean meal (SBM) has a substantial impact on the environment and reducing its inclusion in poultry diets by using alternative protein sources, such as insect meal, is an important challenge for nutritionists. This study aimed to compare the productive performance of broiler chickens fed one of two isonitrogenic (195 g/kg CP) and...
1. This study assessed the impact of replacing two thirds of a soybean meal (SBM) based diet with an alternative protein (AP) based diet (sunflower and rapeseed meal), when fed to end of production Hy-Line Brown laying hens.2. Diets were fed in seven cages, each containing six birds aged from 75 to 83 weeks old. Measured variables included bird per...
A study was conducted to determine the effect of dietary fiber (DF), xylanase (XYL), xylooligosaccharides (XOS), and a combination of XYL and xylooligosaccharides (STBIO) on chicken growth performance, N-corrected apparent metabolizable energy (AMEn), and nutrient availability, characteristics of the gastrointestinal tract (GIT), and cecal content...
Four wheat-based diets with either low soluble non-starch polysaccharide (NSPs, 13 g/kg) content (low viscosity, LV) or high NSPs content (33.5 g/kg; high viscosity, HV), without and with exogenous xylanase (XYL), were fed to male Ross 308 broiler chickens from 7 to 21 days age. The enzyme was supplemented at 100 FXU/kg diet, and its preparation wa...
1. This study examined the feeding value of ten UK grown field bean (Vicia faba L. var. minor) cultivar samples from the same harvest year on nitrogen corrected apparent metabolisable energy (AMEn) and nutrient retention coefficients when fed to young female turkeys.
2. A balancer feed (BF) was formulated to contain 12.39 MJ/kg ME and 269 g/kg crud...
The aim of this study was to assess the effects of graded levels (0, 3, 6, 9 and 12 g/kg) of dry Sea buckthorn (SB) berries on growth performance, gastrointestinal tract (GIT) development, jejunal histomorphology, bird antioxidant status and caecal short‐chain fatty acid concentration when fed to female Ross 308 broiler chickens. In addition, expre...
Concerns over the sustainability of using soybean in poultry diets, has steered the need to develop alternative protein sources for modern poultry production. This experiment examined the effect of nine different United Kingdom grown field bean (Vicia faba L. var. minor) cultivars from the same harvest year on apparent metabolizable energy (AME) an...
Poorly performing piglets receiving commercial milk replacers do not benefit from the naturally occurring probiotic galacto-oligosaccharides otherwise found in sow milk. Study objectives were to investigate the effects of complete milk replacer supplemented with galacto-oligosaccharides on the microbiome, gut architecture and immunomodulatory goble...
Equine anthelmintic resistance poses a threat to the health and welfare of horses worldwide. With no new imminent anthelmintic classes, it is vital to decrease the resistance rate and preserve available classes. Traditional indiscriminate anthelmintic use is not synonymous with a strategic control ideology; however, many continue to implement outda...
Background: Suckling is a unique period in porcine development where establishment of the microbiota is essential for future growth and health of animals. However, poor pre-weaning performance and failure to thrive without signs of clinical disease during lactation is of concern in pig production and incurs significant economic loss. Prebiotic gala...
The aim of the experiment was to assess the content of N-corrected apparent metabolisable energy (AMEn) in dried Sea buckthorn berries (SB) when fed to Ross 308 broiler chickens. Two experimental diets (basal and basal + 12 g/kg dried and milled SB berries) were fed to an equal number of replicated pens (n=8; two birds in each) from 7 to 21d age, f...
This study aimed to assess the effect of rapeseed meal (RSM) processing method, where solvent extraction occurred under standard industry conditions (ST) or cold-pressed hexane extraction was employed (MT), and exogenous enzyme supplementation (phytase (PHY) and xylanase (XYL)) alone or in combination on key nutritional factors of broiler chickens....
1. This study assessed the impact of dietary dihydroquercetin (DHQ) in wheat-based diets on egg production, composition and quality when fed to laying hens. A total of 80 Hy-Line Brown hens were allocated to 20 enriched layer cages, over two tiers, in groups of four birds.
2. Two wheat-based diets were used in the study. A basal diet, meeting the n...
Stevia rebaudiana Bertoni is a shrub with leaves that have a high concentration of carotenoids such as lutein and zeaxanthin. Egg yolks are a bioavailable source of lutein and zeaxanthin. The consumption of these carotenoids has been linked with improved human health. To investigate the impact of dried stevia leaves at 0%, 1% and 3% on the quality...
Dihydroquercetin (DHQ), also known as taxifolin, is a natural antioxidant that can be commercially obtained by extraction from Siberian Larch (Larix sibirica). Four wheat-soy based diets, formulated to contain 0, 0.5, 1.5 and 4.5 g/kg of supplementary DHQ were prepared. Each diet was fed ad libitum to birds in seven pens (three birds in each pen) i...
Background: The global climate is warming. Heat stress, as a result of high ambient temperatures, may negatively impact physiology and reduce growth performance of poultry. Stevia is a perennial shrub indigenous to South America where its phytochemical extracts have been used as a natural sweetener for hundreds of years. Its physiological effects,...
https://www.animalhealthmedia.com/wp-content/uploads/2021/03/One-Health_Professional-Stakeholder.pdf
Four diets, formulated with and without stevia and with and without exogenous xylanase, following 2 × 2 factorial design, were prepared. Each diet was fed ad libitum to birds in eight pens (three birds in each pen) in a randomised block design. It was found that birds fed xylanase grew faster, used the feed more efficiently and had an increased con...
The use of natural antioxidants, in particular polyphenols such as dihydroquercetin (DHQ), in animal nutrition has recently increased in popularity. This may partly be due to the risk of increased incidences of heat stress associated with raising livestock in warmer ambient temperatures, facilitated by global warming, reducing antioxidant capacity....
Introduction: expansion of the Namibian beef export market presents benefits for both the National economy and small-scale farming communities. However, meeting animal health and productivity requirements whilst securing veterinary public health are identified as key challenges to the sector. Farmer access to veterinary services, animal health advi...
Abstracts submitted in 2019 and accepted in 2020, conference postponed due to COVID.
Abstracts submitted in 2019 and accepted in 2020, conference postponed due to COVID.
The use of natural antioxidants, in particular polyphenols such as dihydroquercetin (DHQ), in animal nutrition have recently increased in popularity. This may partly be due to the risk of increased incidences of heat stress associated with raising livestock in warmer ambient temperatures, facilitated by global warming, reducing antioxidant capacity...
• The aim of this study was to examine chemical composition, quality characteristics, apparent metabolisable energy (AME) and nutrient utilisation of wheat samples currently available to the UK poultry industry and their effect on broiler growth performance.
• Seventeen current UK wheat samples were used to formulate 17 diets, all of which included...
1. A total of 80 male Ross 308 broilers were used in a study to investigate the effect of dietary dihydroquercetin (DHQ) on growth performance variables, gastrointestinal tract (GIT) and immune organ development, glutathione peroxidase (GPx) and haemoglobin in blood, hepatic vitamin E content, dietary N-corrected metabolisable energy (AMEn), and nu...
This chapter presents information obtained from experiments involving male Ross 308 broiler chickens on the effects of a standardised combination of plant extracts (PE) including carvacrol, cinnamaldehyde and capsicum oleoresin, on bird performance, hepatic antioxidant concentration and immunomodulation. Birds were reared under industry recognised...
This study aimed to assess the effect of a commercial blend of phytogenic feed additives (PA), comprising 5% carvacrol, 3% cinnamaldehyde, and 2% capsicum oleoresin on the modulation of immune biomarkers of broiler chickens, their growth performance, dietary energy, and nutrient retention. Four-hundred day-old birds were assigned to one of four die...
This study investigated the effects of graded levels of myo-inositol (INS) in diets containing 2 levels of available P on growth performance, nutrient retention, liver N, fat and vitamin E contents, INS and alkaline phosphatase (ALP) concentrations in blood plasma. A total of 120 male Ross 308 broilers were allocated to 60 small floor pens each hol...
The aim of this study was to test the hypothesis of an improved growth, dietary nutrient availability and overall health of broiler chickens reared on recycled litter when fed a standardised combination of essential oils (EO; carvacrol, cinnamaldehyde and capsicum oleoresin). To assess the effect of dietary treatments, feed intake, weight gain, fee...
This article aimed to give student veterinary nurses undertaking an honours research project (HRP) some ideas for how they might identify a suitable topic to research. It started from the premise that the final-year honours degree dissertation project is an exciting opportunity for veterinary nursing students to contribute to the history of veterin...
Wheat is the main cereal used in broiler feed formulations in the UK and many European countries. Understanding the variation in nutritional value of wheat is commercially important and the subject of ongoing research. The aim of this study was to examine the differences in the nutritional value of 17 different wheat cultivars for broiler chickens...
The aim of this article is to provide veterinary nurses with 16 tips to help get them started in practice-based research. It covers key areas that the veterinary nurse should consider before undertaking a research project in order to improve the chances of the study being a meaningful and publishable contribution to the evidence base underpinning v...
Implications The inclusion of zinc oxide in weaner pig diets must be used with care as dietary inclusion of 2500 mg/kg in this study reduced daily live weight gain and increased feed conversion ratio in high health status pigs. Super-doses of dietary phytase fed to pigs post-weaning showed benefits on growth performance, but can only be used to ful...
The quantification of cytokine gene expression has become an invaluable tool in veterinary science to characterise immune responses to a variety of antigens. Six candidate reference genes for normalising duodenal cytokine gene expression data obtained through reverse-transcription polymerase chain reaction (RT-qPCR) with SYBR® green dye were assess...
Straw has been used historically as a bedding material for pigs. However, pigs can be inclined to play with and eat straw. This could cause problems such as a reduced diet digestibility for the pig, as well as a requirement for more cereal-based feed. This UK study investigated the quantity of wheat straw bedding which sows and growers ate, when it...