Instructions for authors InVet (Veterinary Research) is a scientific journal whose objective is to make known scientific and academic research on subjects inherent to areas of knowledge of Veterninary Sciences; Basic Sciences, Animal Production, Preventive Medicine, Public Health and Bromatology, Animal Health and General Education. This journal is aimed at Veterinarians, Doctors in Medicine, Biologists, Technicians in laboratory animal, Zoo-technicians, Food technicians and all professionals related to health and animal production. InVet publishes original articles and short communications from national and foreign authors which should be presented according to the following instructions. Bibliography reviews are subject to evaluation by the Editorial Scientific Committee regarding their relevance for the journal according to the editorial admission requisites.

All studies received are subject to acceptance and their reception does not imply necessary publication. All work will be evaluated by two external reviewers i.e. not from the Faculty of Veterinary Sciences of the University of Buenos Aires. Should a discrepancy result from the evaluations received, a third reviewer could be consulted. The final decision will be taken by the Editorial Scientific Committee.

The whole evaluation process will be carried out using the “double blind” modality to maintain the anonymity of both the authors and the reviewers. Once the evaluation has been finalized, the author will be notified whether the work has been accepted or rejected.

The Editor maintains the right to editorial revision.

All work submitted must be unpublished. Articles that have been presented at Congresses and Symposia or that have been published as summaries or short communications, a fact which must be indicated at the foot of the first page of the article, will be accepted but publication remains subject to the Editorial Committee’s consideration and that of the reviewers proposed to evaluate them.

Once accepted, the articles become the intellectual property of InVet and their future publication, either partial or complete, will only be possible with written permission from the Editor. InVet guarantees authors the use of their published material in books where they intervene as authors or editors, with the sole obligation of mentioning in the book the source of the original publication. Articles can be written in Spanish, English or Portuguese and can be presented in the following categories:

a) Research articles: these correspond to results from original scientific research, scientifically appropriate that provide new information to the area of knowledge. They will be organized according to the format shown further on.

b) Articles of bibliography revision and/or update: these are specific revisions of current or emerging subjects, relevant to the area of knowledge. The objective is not to make a bibliographic compilation, rather present subjects having diverse opinions where the author/s provide an objective opinion and details of scientific findings as well as opinions from different sources. It is a requirement of this 151 journal that the author is a researcher trained with extensive experience and background in the subject to be discussed in the article. Generally these articles are by invitation from the Editorial Committee. Nevertheless, if an author wishes to publish in this category, he/she should provide the Editor in Chief with his/her suggestion for a title and proposed structure for it to be considered.

c) Short communications or Notes: these correspond to reports resulting from scientific research where the objective is to communicate results of a more restricted nature, of up to 2000 words in length, and organized as described further on.

d) Technical Note: It is the concise description of a technique, a development, a procedure, or original and innovative device, based on research that aims at providing a solution to a problem relevant to professional practice. Emphasis must be placed on the comparative advantages that the new technique provides to the professional discipline in which it is developed.
The manuscript should not have more than 2000 words and should be organized into the following sections: introduction, methodology, results and conclusion. Not including, to this effect, more than ten references and no more than four tables and / or figures. They should be accompanied by a note consigning information of the main author and the corresponding author (complete postal address, fax, e-mail), a statement that the contents of the article have not been previously published nor are being considered for publication in any other form and the authorization to publish it signed by all the authors. Also, those scientific articles that stem from research on live animals must submit, and cited in the manuscript, approval of the “Institutional Committee and Use of Experimental Animals (CICUAL)” or similar committee in the institution where they have developed research. If the data used in the preparation of the paper came from patients of an institution, for example Veterinary Hospitals, authors should attach a note where the institution explicit permission to make use of that data. Triplicate printed copies of the originals and a digital back-up copy on a compact disk (CD) or as an e-mail attachment, must be sent to the Editor in Chief Prof. Daniel M. Lombardo, MV PhD to:
Facultad de Ciencias Veterinarias, UBA, Av. Chorroarín 280 (C1427CWO) Buenos Aires, Argentina. Tel: +54-11-4524-8458, Fax: +54- 11-4524-8480, E-mail: invet@fvet.uba.ar

The manuscripts should be typed using Microsoft Word 2003 version or higher. The CD must be identified, including the surname of the first author and the first three words of the title. The name of the document must be the surname of the first author and it must be saved with the extension: *.rtf. The contents of the back-up (CD) should be identical to the printed copy that is sent. The printed copy must be on A4 (21.6 x 29.4 cm) size paper, doublespaced and having all margins of 2.5 cm, with consecutive numbering on each page placed in the top right hand corner and all lines of the text also numbered consecutively. Font type should be Times New Roman size 12 p. Articles should not exceed 12 pages and short communications should not exceed 6 pages. The manuscript should have all its lines numbered sequentially.
The manuscript must have a title (in Spanish, English or Portuguese), name of the authors, Institution they belong to, summary (in Spanish, English or Portuguese), key words, introduction, materials and methods (or experimental design), results, discussion, conclusions and references.
Short communications should have a similar structure and the discussion and conclusions cans be in the same section.

Title. It should be as concise as possible and a short title must be included («running title»). It should correspond with the subject of the article.

Names of the authors. They should be immediately after the main title of the manuscript, separated by two spaces, and justified to the right. Each author’s name should start with a capital letter and the initials also in capital letters, separated from the surname by a comma and a space but without spaces 152 or commas between them. Different authors should be separated by semicolons. At the foot of the page, using the same font as the text, size 10 p and preceded by a reference number, the name of the institution the author belongs to, titles, etc., also indicating postal and e-mail address of the corresponding author. González, G1., Pérez, HI.2 1Departamento de Producción Animal, 2Departamento de Medicina, Facultad de Ciencias Veterinarias. Universidad de Buenos Aires. Chorroarín 280 (1427) Buenos Aires. email:...................

Summary. The most important aspects of the objectives, materials and methods, results and conclusions should be included. Maximum length for articles is 200 words (each unit separated by a space on either side is considered a word) and for short communications, 150 words. No abbreviations should be used save measurement units. The order should be: first the summary in either Spanish or Portuguese followed by the Key Words; second the title and the summary in English, followed by the corresponding Key Words in the same language. If English is used, a summary and key words in Spanish must be included.

Key words. Following the title «Key words» enumerate a maximum of five words which will be used to index the article. Each word should be separated by a comma. Ex a m p l e K e y w o rd s : ( l i v e r ) , (ultrasonography).

Body of the manuscript. In general the article should have three levels of subtitles. Those of first order should be centered with regard to the body of the text, be written in capital letters and bold type.

These should be SUMMARY, INTRODUCTION, MATERIALS AND METHODS, RESULTS, DISCUSSION, CONCLUSIONS and REFERENCES.
Second order subtitles must be justified to the left and written in small bold type. Those of third order start on the first line of the paragraph, separated by a full stop, and justified to the left margin and written in italics. Should a fourth level subtitle be necessary, it should be similar to the third level ones, underlining it instead of using italics. The use of abbreviations should be kept to a minimum and according to that stipulated by the Real Academia Española in cases where the article was written in Spanish. No abbreviations should be used in the titles, subtitles and key words. In the summary, only measurement units will be accepted as abbreviations and in the rest of the text, they will only be used when following a number. When commercial products are mentioned, the commercial name, name of the manufacturer, city and country of manufacture should be added between brackets immediately afterwards. Microorganisms and parasites must be cited by genus and species. The complete genus name should be written the first time it is mentioned and thereafter can be abbreviated using its first letter. All names must be written in italics.
When using uncommon abbreviations, they should be defined the first time they appear in the text.

Introduction. It should be as short as possible and should present the most relevant information existing in the bibliography, the objectives of the study should be mentioned and their importance and impact should be indicated.

Materials and Methods. The experimental design, materials and methodologies used should be described. When using known techniques, they can simply be cited, but in the case of new or not very widespread procedures, they must be described in detail. Likewise, the statistical methods used to analyze the data should be mentioned. If animals were used in the experiments, how these were carried out to avoid their unnecessary suffering must be indicated, as also the minimum number of animals necessary according to the type of experiment. A written statement from the Committee for the Care and Use of Laboratory Animals approving the experiments would be recommended if this is possible. Otherwise the Scientific Editorial Committee reserves the right to consult the Committee for the Care and Use of Laboratory Animals of this institution concerning the protocols that have 153 not previously been evaluated by an institutional Ethics Committee.

Results. Should be expressed clearly and concisely. Tables, graphs or photographs can be used to this end. As the graphs will be reduced in size, the symbols and text need to be sufficiently large to allow reading after reduction. Information supplied in graphs must not be repeated in tables.

Discussion. Conclusions. Everything related to the significance and validity of the results must be stated, avoiding repetition of aspects mentioned under the subtitle Results. Conclusions must be clear and concise.

Acknowledgments. If it is appropriate to give thanks for technical or financial support, etc. Should there be a conflict of interests, these should be stated.

References. Bibliography cited should be limited to the minimum necessary, including only those consulted. It is suggested that no more than 30 references be included. These will be presented according to that determined by the International Committee of Medical Journal Editors (ICMJE). They must be consecutively numbered, using alphabetical order for the first authors’ surnames. All authors should be included when their number does not surpass six. Should there be more, after the third author, the rest will be replaced by et al. References must be indicated in the text with their order number as a superscript, size 10 p. Internationally accepted abbreviations of the publication titles can be found in the Pubmed data base (http://www.ncbi.nlm.nih.gov/entrez/ query.fcgi?db=journals). Journal articles, book chapters, books and scientific events should be presented in the reference list according to the following examples:

Dunhan, B.; Liu, S.A.; Taffet, S. Inmunolocalization and expression of functional and non-functional cell-to-cell channels from wildtype and mutant rat heart connectin 43 CDNA. Circ Res. 1998; 70:1233-43.

Marrube, G.; Rozen, F.; Pinto, GB.; et al. New polymorphism of FASN gene in chicken. J Appl Genet. 2004; 45(4):453-5.

Zipes, DP.; Jalife, J. Cardiac electrophysiolooy. From cell to bedside. 2nd Edition. W.B.Saunders Co. Philadelphia, USA, 1995.

Marban, E.; O’Rourke, B. Calcium channels: Structure, function, and regulation. En Zipes DP. (ed.). Cardiac electrophysiology. From cell to bedside. 2nd Edition. W.D. Saunders Co. Philadelphia, USA, 1995:11-21.

Givon-Lavi, N.; Greenberg, D.; Sharf, A.; Vardy, D.; Katz, A.; Dagan, R. Risk of breakthrough pneumococcal bacteremia in children aged <5 years: comparison between oral amino-penicillin, cephalosporins and azithromycin. 5th International Symposium on Pneumococci and Pneumococcal Diseases 2006. Alice Springs, Australia.

Marra, F.; Patrick, D.; Chong, M.; Bowie, W. Increased Use of Second-Generation Macrolide Antibiotics among Children in British Columbia, Canada [Abstract G-1354]: 45th Interscience Conference on Antimicrobial Agents and Chemotherapy. Washington, DC, December 16-19, 2005. Washington, DC: American Society for Microbiology.

Negro, V.; Hernández, SZ.; Saccomanno, DM. Detección de lesions odontoclásticas reabsortivas felinas (LORF) mediante examen clínico y radiológico. In: http://www.fvet.uba.ar/invet/negro3.pdf, consulted 2nd of October of 2006.

The source of the article should be in italics. In the case of unpublished information, they should be mentioned as follows: Delelis JC. Personal communication (1996).

Illustrations. For each manuscript, a total of 4 black and white photographs and a maximum of 4 tables or graphs will be accepted. Excess illustrations will be financed by the authors, as also color illustrations. All tables and graphs as well as their captions, as included in the text, should be sent separate from the body of the manuscript. They should be numbered chronologically according to their inclusion in the body of the manuscript, on the front of the page and, should their orientation be confusing, in the top right hand corner with the corresponding arrows. Original drawings must be prepared on white paper with) Indian ink. If taken from a computer, only high quality scannings will be accepted, with a minimum resolution of 150 dpi, in *.jpeg or *.tif format. 154 Photographs must be original, printed on shiny paper, with a high resolution and in focus. If they are scanned, they must comply with the same requisites as those for drawings. Authors should indicate, on the left margin of the original and with a circle and the corresponding number, the place they consider most adequate for placing the graphs and illustrations. They should also suggest the final size of the reproductions. Nevertheless, the Editor reserves the right to alter both the location and the size of the illustrations.