DETERMINATION OF THE CONCENTRATION OF SOME MICROELEMENTS IN SLAUGHTER-HOUSE CONFISCATES

U okviru ovog rada praćen je sadržaj mikroelemenata (Zn, Cu, Mn, Co, Pb i Cd) u jetri i slezini goveda i svinja, Uzorci klaničnih konfiskata uzorkovani su u klinici u Ratini godinu dana, tj. od 19. 11. 1985. do 2. 11. 1983, a životinje od kojih su uzorkovani pomenuti organi poticale su iz regiona Kraljevo. Uzorkovanje je pravilno raspoređeno po godišnjim dobima i obrađeno je ukupno po 12 uzoraka svakog konfiskata, tj. po tri konfiskata u svakome godišnjem dobu. Do rezultata o sadržaju Zn, Cu, Mn, Co, Pb i Cd došli smo primenom atomsko-apsorpcione spektrofotometrije. Rezultati naših ispitivanja koncentracije Cu, Mn, Zn, Co, Pb i Cd pokazuju variranje nezavisno od godišnjih doba. U svim uzorcima Co je bio ispod granica detekcije, dok je prisustvo Cd utvrđeno samo u uzorcima goveđe jetre uzorkovane u proljeće. Bakar je u većoj koncentraciji prisutan u jetri negoli u slezini goveda i svinja.In this work we monitored the contents of the microelements (Zn, Cu, Mn, Co, Pb and Cd) in cattle and pig livers and spleens. Samples were analysed at the slaughter-houses in Ratina for one year from 19. 11. 1985 to 2. 11. 1986. The cattle and pigs used in the investigation came from the Kraljevo region. Sampling was properly divided according to the seasons of the year and the total analysed by 12 samples of each confiscate, that is by 3 confiscates in each yearly season. Results on the contents of Zn, Cu, Mn, Co, Pb and Cd were achieved by tie application of atomic-absorption spectrophotometry. Results of our investigations of concentrations of Cu, Mn, Zn, Co, Pb and Cd showed variations regardless of the time of the year. In all samples Co was below the limit of detection, while the presence of Cd was proved only in samples of the cattle livers sampled in the spring season. Copper was, in a high concentration, present in the livers of the cattle and pigs compared to the spleens

Adding zeolite 'minazel-plus' in feeding Oncorhynchus mykiss (Walbaum) and its influence on morphometrical characteristics

The influence of natural zeolite was analyzed, as a food additive applied in a concentration of 0,8% on morphometrical characteristics and basic production index of Rainbow Trout Oncorhynchus mykiss (Walbaum) breeding. By analyzing the obtained results it is found that the presence of zeolite in the trout food has a positive effect with a statistical significance (p<0,05 ) on all analyzed morphometrical indexes of the fish growth rate, on their final body weight, total body length, body length and height, as well as their growth. Including zeolite in the trout mixture had a stimulative effect on the accomplished results of the basic production index of the condition factor (CF), the coefficient of total growth (CTG) and production index (PI) in comparison with the Co-group of fish that are fed without adding zeolite to food

Quality improvement of fishery water using natural zeolite and dynamics of adsorption of hydrological toxicants

The adsorption capability of the natural mineral zeolite of domestic origin, on chemical parameters in water used for the intensive breeding of the Rainbow Trout was investigated in practical and laboratory conditions. It was established on the grounds of an analysis of the obtained results that there is a statistically significant adsorptive power and selectivity of zeolite towards: ammoniac (p<0.01), nitrates (p<0.01), nitrites (p<0.05), and total hardness of water (p<0.05). The applied zeolite contributed to the improvement of the ambient conditions in the trout pond, and it also had a positive ecological effect on the filtration of hydrological toxicants of the pond water output

Application of aromatic plant extract apples in nutrition chinchillas (Chinchilla lanigera)

In this paper we studied the effect of apple aroma as a food additive in a concentration of 0.04% on performance and reduction of fur chewing and basic production parameters. During the experimental period (30 days), the experimental group of chinchillas that was fed with the pellet mixture with the addition of the aroma showed a statistically significant decrease in fur chewing (p<0.01) in comparison with the control group. Also, only 5% of the animals in the experimental group chewed fur out of the total number in that group (20 chinchillas), whereas the percentage of fur chewing with the control group with the same number of animals was 30%. The positive effects of aroma addition were noted for other examined factors as well, since the experimental group of chinchillas showed a bigger increase in body mass (1.36%), better growth (21.18%), increased food consumption (0.48%) and better conversion (17.13%) in comparison with the control group that was not fed with the aromatic additive

EXAMINATION OF THE CERTAIN CHEMICAL CHARACTERISTICS OF DIFFERENT TYPES OF BOILED SAUSAGES PRODUCED IN SERBIA

The objectives of our study were to examine certain chemical quality parameters in samples of various subgroups of boiled sausages and compare obtained values with reference values (Rule book on the quality of minced meat, semi-finished meat and meat products, Official Gazette of RS, no. 31/2012). We used two reference chemical methods: determination of nitrogen and phosphorus content (SRPS ISO 937:1992, SRPS ISO 13730:1999). For determination of hydroxyproline we used M 050 “in house” modified method. We concluded that the total number of tested samples of Fine grounded boiled sausages (n=170), 47 (27.65%) does not match the requirements for the quality provided the above mentioned Rule book, of which 21 samples because lower total protein content (TP) and 33 samples because higher relative protein content of connective tissue (RPC). The most common chemical quality failure of examined Coarsely grounded boiled sausages (n=94) is a higher percent of RPC than allowed (18 - 25 %). We consider in samples of same subgroup lower content of TP in 8 samples (11.11 %). From a total of 8 samples tested Boiled sausages with meat peaces (Šunkarica), all tested samples revealed lower content of TP than allowed (100 %) and 2 samples (25 %) higher relative protein content of connective tissue (RPC). The most common deficiency that reduces the chemical quality of the boiled sausages is higher level of RPC, demonstrated in 53 (19.48 %) of the total (n=272) samples tested. Something minor drawback is the lower percent of TP determined in 37 samples (13.60 %). Total P2O5 content was compatibile with the values permitted by the Rule book in all of 272 examined samples, indicating a strict adherence to regulations when using phosphate as one of the technologically most important additives in the production of boiled sausages

Lactobacillus helveticus lafti l10 supplementation modulates mucosal and humoral immunity in elite athletes: a randomized, double-blind, placebo-controlled trial

To test the influence of probiotic supplementation on humoral immune response, a double-blind, placebo-controlled trial was conducted. Thirty athletes (24 males and 6 females, females: (V)over dotO(2)max 38.2 +/- 4.9 ml.kg(-1).min(-1), age 23.2 +/- 1.4 years; males: (V)over dotO(2)max 57.5 +/- 9.2 ml.kg(-1).min(-1), age 24.0 +/- 2.4 years, mean +/- SD) were randomized either to the probiotic group (Lactobacillus helveticus Lafti L10, 2 x 10(10) colony-forming units) or to the placebo group. Serum and saliva samples were collected at the baseline and after 14 weeks. Total and specific antibacterial antibody levels of IgM, IgG, and IgA classes were determined for different bacteria in the serum, and in saliva, total and specific antibacterial IgA levels were examined. Total IgM was elevated in both probiotic (18%, 15-20%; mean, 90% confidence interval; p = 0.02) and placebo group (35%, 22-47%; p = 0.02), without observed differences in changes between the groups. No significant changes in IgM levels specific for tested bacteria were found. Total IgG level was constant in both groups. A significant (16%, 22.8 to 35%, p = 0.04) reduction of anti-Enterococcus faecalis IgG was noted in the placebo group, in comparison with the probiotic group. There was a substantial decrease in total IgA level in the placebo group, when measured either in serum (15%, 12-18%, p = 0.04) or in saliva (35%, -1.4 to 53%, p = 0.03). Significantly reduced levels of serum anti-lactic acid bacteria IgA antibodies in the placebo group compared with the probiotic group were detected for Lactobacillus rhamnosus LA68 (24%, 5.8-42%, p = 0.02) and for L. rhamnosus LB64 (15%, 2.7-27%, p = 0.02). Probiotic administration could have beneficial effects on systemic humoral and mucosal immune responses

Does the gestation age of newborn babies influence the ultrasonic assessment of hip condition?

Introduction. Ultrasound represents a method of examination of hips of newborn babies capable of defining hip condition and distinguishing stable and unstable hips based on morphological elements. It is accepted in a large number of countries as a method of examination of high risk newborns, or as a method of systematic screening. Objective. The objective of this study was to investigate correlation between ultrasonically estimated hip maturity and respective gestation maturity both in premature and term-born babies, and to investigate the influence of different delivery types on hips condition. Methods. In our study 2045 patients, 1141 males and 904 females, were examined in at the Institute of Neonatology over a period of 5 years. The average age was 34.04 gestation weeks. There were significantly more premature (1698 or 83.03%) than term-born babies (347 or 16.97%). Ultrasound hip examination, as a screening method, was carried out according to Graf. It was followed by clinical examination. Results were analyzed by appropriate statistical methods (χ2-test, one-way ANOVA, multifactor ANOVA). Results. The overall frequency of unstable hips was 3.2%, 1.88% in males and 4.87% in females (p&lt;0.05). 96.8% babies had stable hips, out of which 35.21% were mature and 61.59% immature. In the study of the breech presentation, out of 183 babies, unstable hips were found in 1.58% of male cases, and in 10.23% of female cases. Conclusion. Clinical screening of developmental dysplasia of the hip is insufficient for early diagnosis and decision about the treatment of premature babies. The high frequency of unstable hip type IIc (risky) and IId (decentralized) in premature babies requires early diagnosis and therapy. Wide swaddling for prematures should be applied up to eight months of age. Gentle manipulation is necessary while nursing and conducting physiotherapy of a premature baby

Uticaj različitih sorti tritikalea na proizvodne osobine brojlerskih pilića

The aim of this paper was to determine how forage triticale in diets for fattening broilers influence the body weight and weight gain of broiler chickens for fattening. The survey was conducted on 400 chickens for fattening provenance Ross 308 for a period of 42 days. On this occasion, four groups of chickens were formed, with 100 chickens being treated in each group, as follows: K (classic mixture for fattening broilers) and O-I (mixtures with triticale variety Kg 20), O-II (mixtures with triticale Favorit) and O-III group (mixtures with triticale Trijumf). The highest average body mass in the groups of chickens (male, female and chicks of both sexes), was scored by broiler chickens of O-II-group. The minimum food consumption for 42-day-old chicks was achieved by group O-I (4.275 kg), and the most by O-II group (4.359 kg). Chickens of O-II- and III-O-group had the best feed conversion, while the chickens of O-I-group had a slightly poorer feed conversion. The mortality of the groups of chickens for the entire period of the study was the lowest in O-II-group, at 2.0%, and the highest mortality was found in O-III-group (6.0%). The production index was the highest in O-II-group (202.726) and the lowest in O-I-group. The results achieved in this research indicate that the use of tested triticale cultivars significantly affected the weight gain and body mass of chicks and have nutritional and economic justification.Cilj ovog rada je bio da se utvrdi kako tritikale u smešama za tov brojlera utiče na telesnu masu i prirast brojlerskih pilića u tovu. Istraživanje je obavljeno na 400 pilića za tov provenijencije Ross 308 za 42 dana. Tom prilikom formirane su četiri grupe pilića, sa po 100 pilića u svakoj grupi hranjene različitim smešama: K (standardna smeša za tov brojlera) i O-I (smeša sa sortom tritikalea Kg 20), O-II (smeša sa sortom tritikalea Favorit) i O-III grupa (smeša sa sortom tritikalea Trijumf). Najveću prosečnu telesnu masu kod ispitivanih grupa pilića (muških, ženskih i pilića oba pola), postigli su brojlerski pilići O-II grupe. Najmanji utrošak hrane 42. dana starosti ostvarili su pilići O-I (4,275 kg), a najveći O-II grupe (4,359 kg). Kod pilića O-II- i O-III grupe konverzija hrane bila je najpovoljnija, dok je kod pilića O-I grupe bila nešto lošija konverzija hrane. Mortalitet ispitivanih grupa pilića za ceo period ispitivanja bio je najmanji kod O-II grupe i iznosio je 2,0%, a najveće uginuće ustanovljeno je kod O-III grupe (6,0%). Proizvodni indeks bio je najveći kod O-II grupe (202,726), a najmanji kod O-I grupe (180,044). Rezultati dobijeni u ovom istraživanju, ukazuju na to da upotreba ispitivanih sorti tritikalea značajno utiče na prirast i telesnu masu pilića i ima nutritivno i ekonomsko opravdanje

The Activity Concentration Distributions of Naturally Occurring Radionuclides in the Environmental Samples as a Result of the Operation of the “Kolubara” Coal-Fired Power Plant in the Period of 2010 – 2022.

Jedan od značajnih načina kontrole rada termoelektrana (TE) na ugalj je kontinuirano praćenje vrednosti koncentracija aktivnosti radionuklida prirodnog porekla sadržanih prvenstveno u uglju, a potom i uzorcima pepela i šljake kao glavnim produkatima sagorevanja uglja koje je zbog svoje obilne proizvodnje neophodno odlagati na deponije otpada. Koncentracije aktivnosti prirodnih radionuklida 238U, 235U, 226Ra, 210Pb, 232Th i 40K, koje bi u životnoj sredini potencijalno mogle biti preraspodeljene kao posledica rada TE, podležu redovnoj kontroli u uzorcima uglja, šljake, elektrofilterskog pepela, kao i u uzorcima sakupljenim sa deponija pepela, na aktivnoj i pasivnoj kaseti, i zemljištu uzorkovanom na manjoj i većoj udaljenosti od TE. Predmet ovoga rada je analiza rezultata višegodišnjih merenja obavljenih u periodu od 2010. do 2022. godine. Godišnje vrednosti koncentracija aktivnosti izmerene za svaki ispitivani radionuklid i svaku od sedam vrsta uzoraka posmatrane su kao hronološki nizovi podataka koji čine diskretne vremenske serije za koje su rezultati statističke analize ukazivali da se mogu opisati kao procesi tzv. belog šuma.One of the most important means of controlling the operation of coal-fired power plant (CFPP) is the continuous monitoring of naturally occurring activity concentrations of radionuclides contained primarily in coal and, consequently, in ash and slag samples, the main coal combustion products that must be disposed of in landfills due to their high production. The activity concentrations of the naturally occurring radionuclides 238U, 235U, 226Ra, 210Pb, 232Th, and 40K, which could potentially be released into the environment as a result of the CFPP operation, are regularly monitored in the samples of coal, slag, and fly ash, as well as in the samples of ash piles on the active and passive cassettes and in the soil sampled at lesser and greater distances from the CFPP. The aim of this work is to analyse the results of the multi-year activity concentration measurements carried out in the period from 2010 to 2022. The annual activity concentration values measured for each studied radionuclide and each of the seven sample types were observed as a chronological sequence of data forming discrete time series, which, according to the results of statistical analysis, may be described as white noise processes.XXXII Simpozijum Društva za zaštitu od zračenja Srbije i Crne Gore, 4-6. oktobar 2023; Budva, Crna GoraProceedings: [https://vinar.vin.bg.ac.rs/handle/123456789/11602