Streptococcal mastitis in a mare     

G L Reese  T F Lock 《Journal of the American Veterinary Medical Association》1978,173(1):83-84

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Equine ovarian lymphosarcoma     

T F Lock  D W Macy 《Journal of the American Veterinary Medical Association》1979,175(1):72-73

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Intrahepatic portosystemic venous shunt in a neonatal roan antelope (Hippotragus equinus cottoni).     

Brad A Lock  Scott B Citino  Audrey Pickup 《Journal of zoo and wildlife medicine》2005,36(3):546-549

A 6-day-old, female roan antelope (Hippotragus equinus cottoni) was diagnosed with a single intrahepatic portosystemic venous shunt at necropsy. Clinical signs had included weakness, lethargy, hypothermia, diarrhea, and a weak suckle response. Multiple seizure episodes were associated with hypoglycemia and characterized by vocalization, muscle fasciculations, and disorientation. Hematologic abnormalities included anemia with hypochromasia, anisocytosis, poikilocytosis, and leukopenia with neutropenia and lymphopenia. Serum biochemical abnormalities included elevations in blood urea nitrogen and total serum bile acid concentration. A portosystemic vascular anomaly should be a differential diagnosis for nonthriving, exotic ruminant calves with overt or subtle neurologic signs, persistent hypoglycemia, and/or elevated bile acids. In very young calves, total bile acid concentration may be more useful in establishing a diagnosis than blood ammonia concentration.  相似文献   

A bymovirus PCR primer and partial nucleotide sequence provides further evidence for the recognition of rice necrosis mosaic virus as a bymovirus     

J.L. Badge  S. Kashiwazaki  S. Lock  G.D. Foster 《European journal of plant pathology / European Foundation for Plant Pathology》1997,103(8):721-724

Rice necrosis mosaic virus (RNMV) has physico-chemical and biological properties typical of the Bymovirus genus. However, to date no sequence data has been reported for RNMV. In this paper we report the use of a PCR primer, designed from an area of high homology between bymoviruses and related macluraviruses within the NIb gene, which generated a 1.4kb fragment from the 3' terminal region of RNA 1 of RNMV. The sequence data generated from this region confirmed the classification of RNMV as a member of the Bymovirus genus.  相似文献   

Insect‐based diets high in lauric acid reduce liver lipids in freshwater Atlantic salmon     

Ikram Belghit  Rune Waagb  Erik‐Jan Lock  Nina S. Liland 《Aquaculture Nutrition》2019,25(2):343-357

We evaluated the effect of a diet containing insect meal and insect oil on nutrient utilization, tissue fatty acid profile and lipid metabolism of freshwater Atlantic salmon (Salmo salar). Insect meal and insect oil from black soldier fly larvae (Hermetia illucens, L.; BSF), naturally high in lauric acid (12:0), were used to produce five experimental diets for an eight‐week feeding trial. 85% of the dietary protein was replaced by insect meal and/or all the vegetable oil was replaced by one of two types of insect oil. A typical industrial diet, with protein from fishmeal and soy protein concentrate (50:50) and lipids from fish oil and vegetable oil (33:66), was fed to a control group. The dietary BSF larvae did not modify feed intake or whole body lipid content. Despite the high content of saturated fatty acids in the insect‐based diets, the apparent digestibility coefficients of all fatty acids were high. There was a decrease in liver triacylglycerols of salmon fed the insect‐based diets compared to the fish fed the control diet. This is likely due to the rapid oxidation and low deposition of the medium‐chain fatty acid lauric acid.  相似文献   

厌氧—好氧串联系统对慢速可生物降解COD的去除(Ⅰ)——对不同基质COD的去除能力     

季民  陈红  余坚  俞宝乐 《农业环境科学学报》2002,21(1):52-55

利用高温(55℃)升流式厌氧污泥床和好氧移动床生物膜反应器串联系统,研究了淀粉、纤维素和聚乙烯醇(PVA)这3种在食品加工、造纸和印染工业废水中常见的慢速可生物降解COD基质的去除过程。淀粉-COD能够完全被生物降解,纤维素-COD在厌氧反应器中通过污泥床的截留和纤维物质的沉降作用可以从水中完全去除。单一的PVA基质难于被生物降解,但是,PVA-COD在淀粉和PVA的双组分溶液中可以得到一定的去除率。  相似文献   

In vitro Maturation of Oocytes from Santa Ines Ewes Subjected to Consecutive Sessions of Follicular Aspiration by Laparoscopy     

LC Padilha  PPM Teixeira  EA Pires‐Buttler  M Apparício  TF Motheo  PAP Savi  EYO Nakaghi  AE Alves  WRR Vicente 《Reproduction in domestic animals》2014,49(2):243-248

The success of embryo production in vitro depends upon the use of an efficient oocyte retrieval technique, and the best results have been obtained by laparoscopic aspiration. The aim of this study was to evaluate the effect of consecutive sessions of follicular aspiration on the quantity, quality and in vitro maturation competence of oocytes obtained from ewes subjected to hormonal stimulation. Six Santa Ines ewes underwent nine sessions of follicular aspiration by laparoscopy with a 7‐day interval between sessions, totalling 56 aspirations. After 24 h of culture, oocytes were stained and classified according to the stage of nuclear and cytoplasmic maturation. Oocyte retrieval rate was 61.4 ± 2%, resulting in a total of 249 oocytes. No significant variation was observed between sessions (p > 0.05). The average number of oocytes retrieved from each ewe was 6.4 ± 2 per session and 42 ± 4 in total. No significant difference was observed between the frequencies of the different stages of nuclear maturation: 32.72% mature, 40.74% immature and 26.54% degenerated/indeterminate oocytes; however, a significant difference was observed between the frequencies of the different stages of cytoplasmic maturation: 10.7% mature, 73.25% immature and 16.05% degenerated/indeterminate oocytes. No significant difference was observed in nuclear or cytoplasmic maturation between the weeks of procedure. We conclude that after nine consecutive sessions of follicular aspiration, the quantity and quality of retrieved oocytes remained unchanged as well as the levels of nuclear and cytoplasmic maturation obtained, demonstrating the viability of this technique for repetitive follicular aspirations on the same donor.  相似文献   

Anaesthesia of hatchling green sea turtles (Chelonia mydas) with intramuscular ketamine-medetomidine-tramadol     

TF Scheelings  C Gatto  RD Reina 《Australian veterinary journal》2020,98(10):511-516

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Establishing an upper level of intake for vitamin A in Atlantic salmon (Salmo salar L.) postsmolts     

R. rnsrud  E.‐J. Lock  R. Waagb  C. Krossy  P.‐G. Fjelldal 《Aquaculture Nutrition》2013,19(5):651-664

The vitamin A (VA) concentration in salmon aquaculture feeds is varying and may lead to sublethal adverse effects. In this study, 135 g Atlantic salmon postsmolts were given eight diets in duplicates with 6, 12, 26, 55, 82, 112, 360 and 749 mg retinol (ROL) kg⁻¹ for 116 days. Subsequently, fish given 6, 82 and 749 mg ROL kg⁻¹ were transferred to a common net pen and given a standard commercial diet for further 28 weeks. Feed conversion rate, liver functionality and markers of VA homoeostasis were not negatively affected by dietary VA level, but chronic high VA intakes led to adverse effects on growth and bone health. In plasma, there was an antagonistic effect of dietary ROL on circulating 1,25 (OH)₂ vitamin D₃ (calcitriol). Moreover, a dose–response of VA on craniofacial deformities, condition factor and vertebral morphometry and mechanical strength was observed. Vertebral deformities were observed after 28 weeks on a standard diet and not immediately after the 116 days on the experimental diet. Elevated VA is a risk factor for bone deformities, and the dietary intake of VA should not exceed 37 mg ROL kg⁻¹ body weight day⁻¹ in Atlantic salmon postsmolts.  相似文献   

Constructing a nitrogen fertilizer recommendation system using a dynamic model: what do farmers want?     

J. U. Smith  A. G. Dailey  M. J. Glendining  N. J. Bradbury  T. M. Addiscott  P. Smith  A. Bide  D. Boothroyd  E. Brown  R. Cartwright  R. Chorley  S. Cook  S. Cousins  S. Draper  M. Dunn  A. Fisher  P. Griffith  C. Hayes  A. Lock  S. Lord  J. Mackay  C. Malone  D. Mitchell  D. Nettleton  D. Nicholls  H. Overman  J. Purslow  A. Scholey  S. Senior  L. Sim  P. Taylor 《Soil Use and Management》1997,13(4):225-228

Abstract. An effective fertilizer recommendation system requires information on seasonal, soil-related and cultural variations in soil mineral nitrogen (N) and nutrient requirements of the crop. This can be provided by dynamic N turnover models, such as listed by Plentinger & Penning De Vries (1996). In this paper, we describe a survey of farmer opinion designed to ascertain what farmers want from such a decision support system. Over 100 farmers were surveyed. Surveyed farmers requested that default values be available for all model inputs. Inputs should be entered both by windows-based menu (for clarity) and tabular format (for speed), have user-selected units, and be fully supported by context-sensitive help. The system should have a hierarchical structure allowing access to fixed parameters, and be compatible with commonly used farm recording packages. Recommendations should be provided both for the field (single and optional application rates), and in tabular format across the whole farm. Simulations should be easily rerun using more recent crop and weather data. Turnover processes underlying recommendations should be illustrated by flow diagrams of flux between pools, pie charts of fertilizer fate, bar charts of movement down the soil profile and graphical plots of changes in N status against time.  相似文献