Effect of creep feeding on structural and functional changes of the gut of early weaned pigs   总被引：4，自引：0，他引：4  

D Kelly  J A Smyth  K J McCracken 《Research in veterinary science》1990,48(3):350-356

Dose-dependent hypersensitivity responses mounted against antigenic constituents of creep feeds have been previously implicated in intestinal damage, digestive disorders and impaired performance of early weaned pigs. In the present study biochemical and histological investigations of the small intestine were undertaken to determine the putative relationship between creep feed level and hypersensitivity response in pigs weaned at 14 days. Creep feed was administered by gastric intubation and weaned pigs received the same diet by gastric intubation for five days. Mucosal structure and function at weaning were not affected by creep feeding regimen. Villus height decreased and crypt depth increased in weaned compared to suckled pigs, but morphology was unaffected by prior exposure to creep. Xylose absorption was not influenced by either creep feed level or weaning. Intraepithelial lymphocyte numbers increased during weaning but were not affected by the creep feeding regimen. Mucosal carbohydrase activity in weaned pigs was not significantly affected by preweaning treatment. The results do not support the hypothesis that post weaning changes in structure and function of the gut are related to creep feed level or to immune responses to dietary antigens.  相似文献   

Comparison of commercial broiler house lighting programs using LED and natural light: Part 1—spatial and temporal analysis of light intensity     

John E. Linhoss  Jeremiah D. Davis  Jesse C. Campbell  Joseph L. Purswell  Kelly G. Griggs  Carson M. Edge 《The Journal of Applied Poultry Research》2022,31(3):100272

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Forest soils research and changing societal needs and values     

W.W. McFee  J.M. Kelly 《Forest Ecology and Management》2005,220(1-3):326-330

The 10th North American Forest Soils Conference was held in Sault Ste. Marie, Canada, 20–24 July 2003. These conferences, held at 5-year intervals since 1958, are intended to provide a forum to discuss and summarize the state of knowledge on selected topics related to forest soils. Approximately 60 papers were presented on a variety of topics related to understanding and managing soils that support forests with particular emphasis given to field research, soil carbon, and site management/classification. We discuss the topics of this conference in relation to earlier ones and conclude that advances are made unevenly and that there is a need for new approaches to investigating many of the topics. We note the change in forest management that has occurred since the first of these conferences and the resulting changes needed in our approach to research and management. The need for interaction of scientists and clientele groups is noted as necessary for development of sound management and research policy. The interaction of scientific disciplines is needed to attack problems that have been difficult to elucidate. The challenge to forest soil scientists is to mesh their scientific interests with the needs of society to obtain the resources needed to advance science and provide information that will improve forest management.  相似文献   

专业化的中国木业国际盛会——2005中国木制品进出口贸易洽谈会     

闫蕊  Kelly  Yan 《国际木业》2005,35(12):2-6

2005年10月30日至11月2日，由中国木业国际公司、中国木业国际网和加拿大R.E.Taylor ＆ Associates Ltd.共同主办的第四届《中国木制品进出口贸易洽谈会》在风景秀丽，气候宜人的广东东莞隆重举行，  相似文献   

Rheological Studies on the Reaction of Zein with Polyethylenemaleic Anhydride     

Gordon W. Selling  Jeffrey A. Byars  Kelly D. Utt 《Cereal Chemistry》2016,93(2):145-149

There continues to be interest in developing solvent‐resistant articles from biobased renewable materials to successfully compete with petrochemical products. It was previously shown that reaction of zein with polyethylenemaleic anhydride (PEMA) provides articles that are solvent resistant. The gelation kinetics for the reaction of PEMA with zein was investigated rheologically to better understand this chemistry. The reaction of the nucleophilic groups on zein with the anhydrides on PEMA is the main cause for the gelation reaction. The gelation time was defined as being the point when the elastic modulus (G′) and viscous modulus (G″) cross. In this work, the rate of reaction, in terms of time to gelation, was studied in N,N‐dimethylformamide solution for which the amount of PEMA, the reaction temperature, and the overall reaction concentration were varied. Exponential relationships were found between the gelation time and % PEMA, temperature, and % solids, as well as between elastic modulus with either % PEMA or % solids. The concentration of PEMA had the largest impact on gelation time, for which going from 2.5% PEMA to 6% PEMA reduced the gelation time from 63,114 to 1,576 s. The temperature dependence of this gelation reaction was well described by an Arrhenius plot with an apparent activation energy of 50.5 kJ/mol.  相似文献   

Indications,outcome and complications with axial pattern skin flaps in dogs and cats: 73 cases          下载免费PDF全文

E. J. Field  G. Kelly  D. Pleuvry  J. Demetriou  S. J. Baines 《The Journal of small animal practice》2015,56(12):698-706

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Hemorrhage in the central canal of the cervical spinal cord in a coonhound diagnosed with canine juvenile polyarteritis (steroid responsive meningitis-arteritis)     

Kelly L. Hughes  Susanne M. Stieger-Vanegas  Beth A. Valentine 《The Canadian veterinary journal. La revue veterinaire canadienne》2015,56(6):567-570

Patchy meningeal and parenchymal contrast enhancement of the spinal cord with multifocal central canal dilations was noted in a computed tomography myelogram of the cervical spine of a 6-month-old intact female coonhound with a confirmed diagnosis of canine juvenile polyarteritis and associated hemorrhage within the central canal.  相似文献   

A diagnostic evaluation of real‐time PCR,fluorescent antibody and microscopic agglutination tests in cases of equine leptospiral abortion          下载免费PDF全文

E. Erol  C. B. Jackson  M. Steinman  K. Meares  J. Donahoe  N. Kelly  S. Locke  J. L. Smith  C. N. Carter 《Equine veterinary journal》2015,47(2):171-174

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Acute tracheal compression in a large breed dog due to a dorsal tracheal membrane abscess          下载免费PDF全文

Alex M. Lynch BVSc  DACVECC  Therese E. O'Toole DVM  DACVIM  DACVECC  John E. Rush DVM  DACVIM  DACVECC  Danielle Rondeau DVM  DACVIM  Kelly O'Neill DVM  DACVIM  Raymond K. Kudej DVM  PhD  DACVS 《Journal of Veterinary Emergency and Critical Care》2015,25(6):795-800

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Green tea polyphenol extract regulates the expression of genes involved in glucose uptake and insulin signaling in rats fed a high fructose diet   总被引：1，自引：0，他引：1  

Cao H  Hininger-Favier I  Kelly MA  Benaraba R  Dawson HD  Coves S  Roussel AM  Anderson RA 《Journal of agricultural and food chemistry》2007,55(15):6372-6378

Green tea has antidiabetic, antiobesity, and anti-inflammatory activities in animal models, but the molecular mechanisms of these effects have not been fully understood. Quantitative real-time polymerase chain reaction (PCR) was used to investigate the relative expression levels and the effects of green tea (1 and 2 g solid extract/kg diet) on the expression of glucose transporter family genes (Glut1/Slc2a1, Glut2/Slc2a2, Glut3/Slc2a3, and Glut4/Slc2a4) and insulin signaling pathway genes (Ins1, Ins2, Insr, Irs1, Irs2, Akt1, Grb2, Igf1, Igf2, Igf1r, Igf2r, Gsk3b, Gys1, Pik3cb, Pik3r1, Shc1, and Sos1) in liver and muscle of rats fed a high-fructose diet known to induce insulin resistance and oxidative stress. Glut2 and Glut4 were the major Glut mRNAs in rat liver and muscle, respectively. Green tea extract (1 g) increased Glut1, Glut4, Gsk3b, and Irs2 mRNA levels by 110, 160, 30, and 60% in the liver, respectively, and increased Irs1 by 80% in the muscle. Green tea extract (2 g) increased Glut4, Gsk3b, and Pik3cb mRNA levels by 90, 30, and 30% but decreased Shc1 by 60% in the liver and increased Glut2, Glut4, Shc1, and Sos1 by 80, 40, 60, and 50% in the muscle. This study shows that green tea extract at 1 or 2 g/kg diet regulates gene expression in the glucose uptake and insulin signaling pathway in rats fed a fructose-rich diet.  相似文献