A comparison of microtubers and field-grown tubers of potato (Solanum tuberosum L.) for hexoses, sucrose and their ratios following postharvest cold storage     

Ranjith Pathirana  John C. Harris  Marian J. McKenzie 《Postharvest Biology and Technology》2008,49(1):180-184

Cold-induced sweetening (CIS) is a significant postharvest problem in processing potato (Solanum tuberosum L.) tubers. A rise in hexose sugar levels during cold storage results in a brown, bitter tasting and unmarketable product. We tested if potato microtubers (MicroT) can undergo CIS and if this corresponds to the CIS response in field-grown tubers (FieldT) with the hope of fast-tracking breeding programmes using a MicroT system. Using MicroT from potato genotypes representing a range of CIS response levels we have demonstrated that MicroT undergo CIS more rapidly than FieldT. Correlations of glucose:sucrose and hexose:sucrose ratios were highly significant between the two tuber types after cold treatment and these ratios are known to be good predictors of invertase activity, a key regulator of CIS. Correlations of individual sugars were non-significant before and after postharvest cold treatment.  相似文献   

Immediate effects of diamond burr debridement in patients with spontaneous chronic corneal epithelial defects,light and electron microscopic evaluation          下载免费PDF全文

Charlotte Dawson  Carolina Naranjo  Belen Sanchez‐Maldonado  Georgina V. Fricker  Rose N. Linn‐Pearl  Natalia Escanilla  Christiane Kafarnik  David J. Gould  Rick F. Sanchez  Marian Matas‐Riera 《Veterinary ophthalmology》2017,20(1):11-15

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Correlation analyses of phytochemical composition, chemical, and cellular measures of antioxidant activity of broccoli (Brassica oleracea L. Var. italica)     

Eberhardt MV  Kobira K  Keck AS  Juvik JA  Jeffery EH 《Journal of agricultural and food chemistry》2005,53(19):7421-7431

Chemical measures of antioxidant activity within the plant, such as the oxygen radical absorbance capacity (ORAC) assay, have been reported for many plant-based foods. However, the extent to which chemical measures relate to cellular measures of oxidative stress is unclear. The natural variation in the phytochemical content of 22 broccoli genotypes was used to determine correlations among chemical composition (carotenoids, tocopherols and polyphenolics), chemical antioxidant activity (ORAC), and measures of cellular antioxidation [prevention of DNA oxidative damage and of oxidation of the biomarker dichlorofluorescein (DCFH) in HepG2 cells] using hydrophilic and lipophilic extracts of broccoli. For lipophilic extracts, ORAC (ORAC-L) correlated with inhibition of cellular oxidation of DCFH (DCFH-L, r = 0.596, p = 0.006). Also, DNA damage in the presence of the lipophilic extract was negatively correlated with both chemical and cellular measures of antioxidant activity as measured by ORAC-L (r = -0.705, p = 0.015) and DCFH-L (r = -0.671, p = 0.048), respectively. However, no correlations were observed for hydrophilic (-H) extracts, except between polyphenol content and ORAC (ORAC-H; r = 0.778, p < 0.001). Inhibition of cellular oxidation by hydrophilic extracts (DCFH-H) and ORAC-H were approximately 8- and 4-fold greater than DCFH-L and ORAC-L, respectively. Whether ORAC-H has more biological relevance than ORAC-L because of its magnitude or whether ORAC-L bears more biological relevance because it relates to cellular estimates of antioxidant activity remains to be determined. Chemical estimates of antioxidant capacity within the plant may not accurately reflect the complex nature of the full antioxidant activity of broccoli extracts within cells.  相似文献   

Fluoride retention of Atlantic salmon (Salmo salar) fed krill meal     

Kåre Julshamn  Marian Kjellevold Malde  Kjell Bjorvatn  & Per Krogedal 《Aquaculture Nutrition》2004,10(1):9-13

The present experiment was performed to study how fluoride from krill meal enriched muscle, whole fish and bone of adult Atlantic salmon (Salmo salar) reared in sea water. Atlantic salmon (mean weight 0.5 kg) were divided into four triplicate groups and fed a commercial fish meal based diets with 0, 100, 200 and 300 g krill kg^?1 feed, respectively, for 12 weeks. The fluoride concentrations in the experimental feeds were analysed to be 18, 132, 235 and 358 mg kg^?1, respectively. Growth, mortality and feed efficiency were recorded through the experiment. Fluoride concentration was measured in muscle, whole‐body, and bone initially and after 12 weeks of feeding. The fluoride concentrations in the samples were determined by alkali fusion and fluoride ion‐selective electrode. Growth, mortality and feed efficiency ratio were not affected by the dietary treatments. The results showed that fluoride concentration in muscle, whole body and bone were not affected by the dietary fluoride level. The fluoride concentration in the tissues showed great variation among replicates of the group given the same diet. Fillets of the fish varied between 0.3 and 1.4 mg fluoride kg^?1 wet weight, whereas the whole‐body concentration of fluoride varied between 3.3 and 6.1 mg kg^?1 wet weight and the fluoride bone concentration varied between 5.8 and 7.2 mg kg^?1 fresh weight. These results suggest that Atlantic salmon are highly tolerant of dietary fluoride given as krill meal with concentration of fluoride up to 350 mg kg^?1 diet, and that accumulation of fluoride from feeding diets containing krill meal does not lead to tissue accumulation in the fish, at least over a short period of time.  相似文献   

Hemopericardium in a dog due to hemorrhage originating in a heart base thymic remnant.     

G A Bradley  J Tye  F Lozano-Alarcon  T Noon  E J Bicknell  C Reggiardo 《Journal of veterinary diagnostic investigation》1992,4(2):211-212

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Comparative Development of the Pituitary-Adrenal Axis in the Fetal Foal and Lamb   总被引：2，自引：0，他引：2  

Abigail L. Fowden  Marian Silver 《Reproduction in domestic animals》1995,30(4):170-177

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Book reviews     

Marian Stamp Dawkins  G. C. Mead  N. C. Stickland 《British poultry science》1994,35(3):477-480

Proceedings of the Fourth European Symposium on Poultry Welfare, Edited by C. J. Savory and B. O. hughes, 1993. 318 pp. illustrated. Potters Bar, London, Universities Federation for Animal Welfare. £ 10.00 ISBN 0 900767 83 9.

Microbiology of the Avian Egg. Edited by R. G. Board AND R. Fuller, 1994. 181 pp., illustrated. London, Chapman and Hall. £45.00 ISBN 0–412–47570–7.

Handbook of Avian Anatomy: Nomina Anatomic Avium. Second edition, Edited by J. J. Baumel, 1993. XXIV + 229 pp illustrated. Nutall Ornithological Club, c/o Museum of Comparative Zoology, Harvard University, Cambridge, MA 02138, USA. $65.00  相似文献   

A comparison of florfenicol and tulathromycine for the treatment of undifferentiated fever in feedlot calves     

Perrett T  Abutarbush SM  Wildman BK  Fuchs MT  Schunicht OC  Pollock CM  Fenton RK  Jim GK  Guichon PT  Booker CW  Berg J  Roder J  Spire M 《Veterinary therapeutics : research in applied veterinary medicine》2008,9(2):128-140

The purpose of this study was to compare the relative cost-effectiveness of florfenicol with that of tulathromycin for treatment of undifferentiated fever (UF) in feedlot calves at ultra-high risk of developing UF that receive metaphylactic tulathromycin on arrival at the feedlot. Calves that received therapeutic florfenicol had lower overall mortality (P=.045) and bovine respiratory disease mortality (P=.050) compared with calves that received therapeutic tulathromycin, but no significant differences were detected in feedlot performance, carcass characteristics, or other animal health variables. There was a net advantage of Can$41.19/treated animal in the florfenicol group versus the tulathromycin group. This study demonstrates that it is more cost-effective to use florfenicol than tulathromycin for the initial treatment of UF in feedlot calves at ultra-high risk of developing UF that receive on-arrival metaphylactic tulathromycin.  相似文献   

Visfatin expression is not associated with adipose tissue abundance in the porcine model     

Palin MF  Labrecque B  Beaudry D  Mayhue M  Bordignon V  Murphy BD 《Domestic animal endocrinology》2008,35(1):58-73

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Corneal and anterior segment foreign body trauma in dogs: a review of 218 cases          下载免费PDF全文

Roser Tetas Pont  Marian Matas Riera  Richard Newton  David Donaldson 《Veterinary ophthalmology》2016,19(5):386-397

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