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The DSpace digital repository system captures, stores, indexes, preserves, and distributes digital research material.2024-03-29T15:32:29ZTulpini de micromicete - sursă potențială de principii bioactive cu aplicare în apicultură
http://repository.utm.md/handle/5014/26729
Tulpini de micromicete - sursă potențială de principii bioactive cu aplicare în apicultură
BUGNEAC, Veronica
In this study, research was carried out related to the identification of some micromycetes strains as a source of bioactive principles with application in beekeeping. Thus, 22 strains of micromycetes, representatives of the genus Penicillium, were studied according to their antimicrobial properties against Aspergillus niger and Aspergilus flavus, pathogens of aspergillosis, and Paenibacillus larvae, pathogen of the american and european loci. Сatalase activity was also studied. As a result, 5 strains of micromycetes were selected, possessing significant enzymatic and antimicrobial properties that will be further studied to obtain preparations of microbial origin as an alternative to the antibiotics used in beekeeping.
2023-01-01T00:00:00ZEfectul sel-plex asupra afecţiunilor gastrointestinale şi a stresului oxidativ la puii broiler
http://repository.utm.md/handle/5014/26728
Efectul sel-plex asupra afecţiunilor gastrointestinale şi a stresului oxidativ la puii broiler
VOINIŢCHI, E.; BALANESCU, S.; COCIU, V.
The study carried out on a lot of 80 broiler chickens COBB-500, divided into a control group and an experimental group assessed the influence of Sel-Plex product (organic selenium) on the bioproductive indices and blood parameters. The chicks from the experimental group were administered, in addition to their basic ration, the Sel-Plex product in dose of 0,4 mg Se/1kg of feed, from one to 49 days of age. The results of investigations of clinical indices (general state, plumage, behavior, feed intake, daily weight gain, morbidity, and lethality) revealed the positive effect of supplementing daily rations with organic selenium on the growth and development of chickens. The lethality rate was lower in the experimental group (0 %) in comparison with the control (5 %). The body weight was 4,63 % higher compared to chickens of the control group. The dynamics of paraclinical indices (erythron, biochemical parameters, malondialdehyde content, activity of superoxide dismutase, catalase, glutathione peroxidase and glutathione reductase in serum) show that the Sel-Plex product has beneficial effects on erythropoiesis, metabolic and antioxidant status.
2023-01-01T00:00:00ZDate statistice privind consumul de antibiotice utilizate în creșterea păsărilor din Republica Moldova
http://repository.utm.md/handle/5014/26727
Date statistice privind consumul de antibiotice utilizate în creșterea păsărilor din Republica Moldova
MALANCEA, Nicolae; STARCIUC, Nicolae
The development of antimicrobial resistance is closely related to the consumption of antibiotics in poultry, with the increase in the use of antibiotics, the incidence of antimicrobial resistance also increases, therefore it is important to monitor and verify the effectiveness of the antibiotics used in poultry farming. The probability of antibiotic treatment failure rises as a result of the transfer of resistance genes from poultry to people. Both human and animal welfare have benefited from the usage of antibiotics. However, improper use of antibiotics in any sector leads to the emergence of antibioticresistant pathogenic microorganisms that have negative health effects on both people and animals. It is well known that more than 50% of all antibiotics produced globally are used in animal production, both therapeutically and non-therapeutically. This study documents antibiotic usage in poultry farming with specific focus on the role of poultry production in the development of antimicrobial resistance phatogens. The market of veterinary medicines, including antibiotics, in the Republic of Moldova is mainly covered by imports. Thus, about 87% of the antibiotics that can be used in poultry farming are imported and only 13% from local production. Another important aspect with reference to antibiotics used in poultry farming is the fact that about 21% of antibiotics are part of category B (the group of antibiotics that are of critical importance in human medicine), according to the classification of AntiMicrobial Expert Group. Therefore inappropriate use of antibiotics from this category represent an increased risk to human health.
2023-01-01T00:00:00ZIncidența bacteriilor din genul Salmonella spp la unele unități de creștere a puiilor broiler și a găinilor ouătoare
http://repository.utm.md/handle/5014/26726
Incidența bacteriilor din genul Salmonella spp la unele unități de creștere a puiilor broiler și a găinilor ouătoare
JUNCU, Olga
As a goal of this investigations was to establish the incidence of the circulation of pathogenic serotipes of the Salmonella spp. bacteria in the poultry enterprises specialized in the growth of broiler chickens and in the poultry factoris specialized in production of eggs for current consumption. As material for the research were taken sampels from the poultry rooms, and eguipment, the faecal sampels, shoe, surface washes from the equipment and the eggs for current consumption. The isolation and identification of bacteria from the genus Salmonella spp. were performed to the methodology in force at nationl level. For serotyping of bacteria from the genus Salmonella spp., were used the monovalent O and H sera. The results of bacteriological investigations of faecal sampels colected from broiler chickens, demonstrated that the highest index of bacteria of the genus Salmonella spp. at the age of 1-2 days was 2.09±0.18 log CFU/g , with variations to 2.49±0.19 log CFU/g at the age of 20 days and with an increase up to 3.52±0.20 log UFC/g, at the 40 days age of chickens. Simultaneously with the faecal samples, were taken the sampels from chicken corpses. The obtained indices demonstrated that the number of conditionally pathogenic microorganisms in the chickens corpses is higher with 2 log units, compared to this index obtained from faecal samples of live chickens. Bacteriological research performed at faecal samples of the flocks of laying hens have demonstrated that the index of bacteria of the genus Salmonella spp. at the age of hens of 145-165 days had relatively low variations (0.65±0.16 log CFU/g). At the beginning of the laying period (290-310 days) this index had a parametres of 0,71±0,08 log CFU/g, but of the end of the laying period (450-470 days), the index had a double increasing and constituted 1.66±0.24* log CFU/g. The mentioned indexes demonstrated that the veterinary sanitary and preventive curative measures undertaken at the poultry units do not fully prevent the risks of contamination with bacteria of the genus Salmonella spp. and still remain an important problem for the health of poultry flocks. Bacteriological investigations confirmed that the index of Salmonella spp. bacteria in broiler flocks constituted 8.6%, with the predominance of serotype Salmonella pullorum gallinarum, and in laying hen flocks this index constituted 4.2%, with the predominance of Salmonella pullorum gallinarum and Salmonella typhimurium serotypes, which presents a risk of contamination both for poultry flocks and for human health.
2023-01-01T00:00:00Z