Effects of feeding with different live preys on the lipid composition,growth and survival of Octopus vulgaris paralarvae     

Diana B. Reis  Anastasia Shcherbakova  Rodrigo Riera  Virgina M. Martín  Pedro Domingues  Jos P. Andrade  Pablo Jimnez‐Prada  Covadonga Rodríguez  Antnio V. Sykes  Eduardo Almansa 《Aquaculture Research》2021,52(1):105-116

To move forward in the farming of Octopus vulgaris paralarvae, it is necessary to search for a live prey easy to obtain and maintain in the laboratory that meets the nutritional requirements of the octopus paralarvae and adapts to its predatory behaviour. Grapsus adscensionis zoeae (Crustacea, Decapoda) seems to fulfil most of these targets, and it was herein used to deepen knowledge of paralarvae lipid requirements and composition, growth and survival. To this purpose, the effects of feeding with Grapsus zoeae as sole prey were compared with Artemia at two different stages (nauplii and juveniles), which also differed in their lipid profiles. After 15 days of feeding, the best growth and survival of paralarvae was obtained in the Grapsus group, and no differences were observed between both Artemia groups. Triacylglycerides storage in paralarvae seemed to be co‐related with a lower growth and survival, but not with its prey levels. Contrarily, sterol ester levels were higher in paralarvae fed Grapsus, reflecting its content in the prey. The best paralarval viability was related to higher levels of 22:6n‐3 (DHA) and 20:4n‐6 (ARA), also reflecting its higher content in the prey. On the other hand, neither the 20:5n‐3 (EPA) levels in the prey nor in paralarvae were related to growth or survival. The implications of these results are discussed considering the lipid requirements of O. vulgaris paralarvae.  相似文献   

Influence of diet and water supply on mineral content and pH within the large intestine of horses with enterolithiasis     

Hassel DM  Spier SJ  Aldridge BM  Watnick M  Argenzio RA  Snyder JR 《Veterinary journal (London, England : 1997)》2009,182(1):44-49

To determine the effects of two diets and water supplies on intestinal pH and mineral concentrations in the colon of horses, and to identify whether differences in these parameters exist in horses with and without enterolithiasis, surgical fistulation of the right dorsal colon was performed in six adult horses, three with and three without enterolithiasis. Each horse underwent four feeding trials: grass hay and untreated water, alfalfa hay and untreated water, grass hay with filtered/softened water, and alfalfa hay with filtered/softened water. Samples of colonic contents were analyzed for pH, dry matter, and mineral concentrations.Horses with enterolithiasis had higher calcium, magnesium, phosphorus and sulfur concentrations and higher pH in colonic contents than controls. Horses fed alfalfa had lower colonic sodium and potassium, higher calcium, magnesium, phosphorus and sulfur concentrations, and a more alkaline pH than those fed grass. Grass hay consumption leads to reduced concentrations of select minerals and a more acidic colonic environment compared with alfalfa, probably beneficial in the prevention of enterolithiasis. Under controlled dietary and management conditions, horses with enterolithiasis have differences in colonic mineral and pH parameters that may be consistent with physiological differences between horses with and without the disease.  相似文献   

A Note on Determining Parameter Redundancy in Age-Dependent Tag Return Models for Estimating Fishing Mortality,Natural Mortality and Selectivity     

Diana J. Cole  Byron J. T. Morgan 《Journal of Agricultural, Biological & Environmental Statistics》2010,15(4):431-434

Jiang et al. (JABES 12:177–194, 2007) present models for tag return data on fish. They examine whether the models are parameter redundant, but need to resort to numerical methods as symbolic methods were sometimes found to be intractable. Also, their results are only applicable for a specified number of years of tagging data and age-classes. Here we show how symbolic methods can in fact be used and also how conclusions apply to any number of years of tagging data and age-classes.  相似文献   

ECG of the month     

Baron Toaldo M  Diana A  Sgreccia G  Cipone M 《Journal of the American Veterinary Medical Association》2012,240(12):1419-1421

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Cerebellar cortical degeneration in three English bulldogs: clinical and neuropathological findings     

Gandini G  Botteron C  Brini E  Fatzer R  Diana A  Jaggy A 《The Journal of small animal practice》2005,46(6):291-294

This case report describes the clinical and neuropathological findings in three young English bulldogs affected by cerebellar cortical degeneration. The dogs, born from the same parents, were presented with clinical signs indicating progressive cerebellar dysfunction: a wide-based stance, severe cerebellar ataxia characterised by marked hypermetria, spasticity, and intention tremors of the head and trunk with loss of balance. On histopathological examination, lesions were confined to the cerebellum and consisted of diffuse degenerative cortical lesions, and there was a loss of Purkinje and granule cells. The history, clinical signs and neuropathological findings confirmed the diagnosis of cerebellar cortical degeneration. To the authors' knowledge, this is the first report of cerebellar cortical degeneration in the English bulldog.  相似文献   

Useful network     

Mills D 《The Veterinary record》2005,157(25):820

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Use of the galactose-based contrast agent SHU 508A (Levovist) in renal ultrasonography of the dog     

Pietra M  Brini E  Fracassi F  Diana A  Cipone M 《Veterinary research communications》2005,29(Z2):305-307

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Investigation of the transmission of Mycobacterium bovis from deer to cattle through indirect contact     

Palmer MV  Waters WR  Whipple DL 《American journal of veterinary research》2004,65(11):1483-1489

OBJECTIVE: To investigate the infection of calves with Mycobacterium bovis through oral exposure and transmission of M. bovis from experimentally infected white-tailed deer to uninfected cattle through indirect contact. ANIMALS: 24 11-month-old, white-tailed deer and 28 6-month-old, crossbred calves. PROCEDURE: In the oral exposure experiment, doses of 4.3 x 10(6) CFUs (high dose) or 5 x 10(3) CFUs (low dose) of M. bovis were each administered orally to 4 calves; as positive controls, 2 calves received M. bovis (1.7 x 10(5) CFUs) via tonsillar instillation. Calves were euthanatized and examined 133 days after exposure. Deer-to-cattle transmission was assessed in 2 phases (involving 9 uninfected calves and 12 deer each); deer were inoculated with 4 x 10(5) CFUs (phase I) or 7 x 10(5) CFUs (phase II) of M. Bovis. Calves and deer exchanged pens (phase I; 90 days' duration) or calves received uneaten feed from deer pens (phase II; 140 days' duration) daily. At completion, animals were euthanatized and tissues were collected for bacteriologic culture and histologic examination. RESULTS: In the low- and high-dose groups, 3 of 4 calves and 1 of 4 calves developed tuberculosis, respectively. In phases I and II, 9 of 9 calves and 4 of 9 calves developed tuberculosis, respectively. CONCLUSIONS AND CLINICAL RELEVANCE: Results indicated that experimentally infected deer can transmit M. bovis to cattle through sharing of feed. In areas where tuberculosis is endemic in free-ranging white-tailed deer, management practices to prevent access of wildlife to feed intended for livestock should be implemented.  相似文献   

Use of computed tomography in thoracic diseases of small animals     

Cipone M  Diana A  Gandini G  Fava D  Trenti F 《Veterinary research communications》2003,27(Z1):381-384

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Synthesis and insecticidal activity of lipophilic amides. Part 4: The effect of substituents on the phenyl group of 6-phenylhexa-2,4-dienamides     

Michael Elliott  Andrew W. Farnham  Norman F. Janes  Diana M. Johnson  David A. Pulman 《Pest management science》1987,18(4):223-228

Substituted phenylacetaldehydes, made by homologation of the benzaldehydes by Wittig condensation with a methoxymethylene ylid, were condensed under Wadsworth-Emmons conditions to give the substituted N-(2-methylpropyl)-6-phenylhexa-2,4-dienamides. Electron withdrawing substituents favoured the formation of the unwanted 3,5-diene isomer. Insecticidal activity was lowered by most substituents examined, but was retained or even enhanced by halogen atoms at the m- or p-positions. At the m-position, activity decreased as size of halogen increased.  相似文献