Scientific Works Series C. Veterinary Medicine

PRINT ISSN 2065-1295, ISSN-L: 2065-1295, ISSN CD: 2343-9394,ISSN ONLINE 2067-3663
 

Published in Scientific Works. C Series. Veterinary Medicine, Vol. LVIII ISSUE 3
Written by Molnar Maria Eugenia, Falcă Constantin, Petruse Cristina

The experiment was conducted on 144 hens, for the duration of a production cycle. The biological material used in the experiment was divided into 4 experimental groups. In the experiment we used a structure of mixed supplemented fodder in three experimental variants with selenium, zinc and magnesium. The supplementation of the feed, designed for hybrid hens in the upward phase of the egg laying curve with selenium, zinc and magnesium led to the reduction in the total consumption of feed with additional variants compared with the control group. Feed supplementation with selenium determined the insignificant increase in the egg production, compared to the other variants tested in the upward phase, but a significant increase in the steady and downward phase of the egg laying curve. Zinc supplementation has also led to an insignificant increase in egg production in the upward and downward phases versus the control group. Magnesium supplementation led to the worst results on egg production and their average weight.

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Published in Scientific Works. C Series. Veterinary Medicine, Vol. LVIII ISSUE 3
Written by Mirela Miclean, Cecilia Roman, Ioan Stefan Groza

Toxic compounds, such as organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) are ubiquitous in the environment, thus indirectly in animals feed. The transfer of these compounds from animal feed to food products contributes to the human exposure, through consumption. OCPs and PCBs are highly persistent, biocumulative and exercise a wide range of toxic effects, including endocrine system disrupting, being considered as a new class of nonsteroidal xeno-estrogens. In this study, the transfer factors (TFs) for 19 OCPs and 7 PCBs have been evaluated for the quantification of their transfer from cows’ fodder to milk. The samples (milk and feed from cow’s diet) were collected in two villages from Maramures County, Romania. The compounds OCPs and PCBs were analyzed using gas-chromatography coupled with electron capture detection after solvent extraction. Among the OCPs, all the HCH isomers were detected in all the investigated samples, the highest concentration were obtained for α-HCH. All the isomers DDTs (except 2,4’-DDD) were determined, with highest concentration for 4,4’-DDE. The obtained results showed that the TFs ranged between 0.03-0.28, the highest value was recorded for hexachlorobenzene and the lowest for lindane. High values were determined also, for dieldrin (0.25) and for heptachlor (0.23).

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Published in Scientific Works. C Series. Veterinary Medicine, Vol. LVIII ISSUE 3
Written by Marius Eduard Caplan, Lorena Andreea Mateescu, Alina Maria Holban

Listeria monocytogenes is an emerging bacterial foodborne pathogen responsible for listeriosis outbreaks. Frequently, listeriosis is transmitted through cured or processed meat, poultry, fish, seafood, dairy products, vegetables. This illness is characterized by septicaemia, meningitis, encephalitis and abortive disease (stillbirth or premature birth of the fetus). Listeria monocytogenes isolates from raw and processed meat were studied for the production of cell associated (adherence to HEp-2 cells) and enzymatic virulence factors, i.e.: pore forming toxins (hemolysine, lecithinase, lipase) and exoenzymes (gelatinase, amylase, caseinase, esculinase, DNase). The majority of the tested strains revealed adherece to HEp-2 cells with a predominant diffuse-aggregative pattern, as well as hemolysine, esculinase, caseinase and lipase. All L. monocytogenes strains harbored the hlyA gene. The presence of different virulence features in L. monocytogenes strains isolated from food products may explain the implication of these strains in the occurrence of severe illness.

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Published in Scientific Works. C Series. Veterinary Medicine, Vol. LVIII ISSUE 3
Written by Mitranescu Elena, Tudor L., Roxana Vataselu, Lataretu A., Furnaris F.

Assuring a good animal welfare level is not only a mean of increasing livestock production, but also a moral duty of human society. As a major concern, of general interest, animal welfare is covered by numerous governmental or nongovernmental organizations and bodies: Food and Agriculture Organization of the United Nation, World Trade Organization, European Council, European Union, Intergroup on the Welfare and Conservation of Animals, Eurogroup for Animals, World Organization for Animal Health, Codex Alimentarius, World Veterinary Association, World Society for the Protection of Animals. The present paper aims to assess the welfare level in a farm from Prahova County, respectively in 2 houses for dairy cows with capacities of 520 and 480 animals, reared in collective pens. Because our country hasn’t an official welfare assessment system, we used an integrative numerical system from Austria organic farming: Animal Needs Index 35. This system consists in the study of welfare indicators included in 5 areas of influence: locomotion, social interaction, flooring, light and air, stockmanship, for each parameter points being awarded. The sum of all scores gives the overall ANI score. The research was based on metric measurements, data from health records, body hygiene score, gait score or were done by using specific equipment (Dräger MiniWarn portable gas analyzer, LM8010 multifunction device, SL4012 sound level meter, Hill catathermometer). The overall ANI score was 24 for the first house and 23.5 points for the second - with a weighted average of 23.76 points. As critical issues stand out: lack of outdoor access, draughts’ high velocity, poor hygiene of pens, feeding and drinking areas, as well as poor body hygiene of animals (soiled animals). Based on obtained scores, the welfare of dairy cows in the farm can be rated as average.

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