ISSN 2285-5750, ISSN CD-ROM 2285-5769, ISSN-L 2285-5750, ISSN Online: 2393 – 2260
 

Published in Scientific Papers. Series D. Animal Science, Vol. LXV, Issue 1
Written by Daniela Mihaela GRIGORE, Georgeta CIURESCU, Nicoleta RADU, Narcisa BABEANU

The current study aimed to evaluate the effects of spent brewer’s yeast (SBY, Saccharomyces spp.), with or without the addition of Rhodotorula spp. biomass (Rh), as dietary supplements on broiler health status and growth performance. A total of 320 one-day-old, Ross 308 broiler chicks were randomly divided into eight experimental groups with five replicate pens of eight birds/replicate. A 4 by 2 factorial design study was used, with SBY different inclusion levels (0, 0.6, 1 and 1.3 g/kg feed) and Rh supplementation (0 or 0.3 g/kg of feed) as treatments. There were no significant effects between the main factors SBY x Rh on the hematologic profiles (P>0.05) of the broilers. Blood serum biochemical profile of SBY and Rh groups and the interactions between treatments were evaluated and no significant effects were found (P>0.05), except for the glucose (p = 0.023), which was influenced by the SBY addition. Moreover, the SBY addition (0.6 and 1g/kg) resulted in similar productive performances for weight gain and average daily gain, with the control group (Corn-SBM diet). In conclusion, yeast bioactive, nutritive, and pharmacologic compounds could serve as a suitable low-cost option to conventional supplements used in meat poultry nutrition.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXV, Issue 1
Written by Volodymyr MELNYK, Olena KARATIEIEVA, Olena KRAVCHENKO, Olena KOGUT

Synchronization and stimulation are used to obtain large numbers of embryos. Therefore, the studies carried out made it possible to assess homeostasis in the dynamics of metabolism in different phases of regulation of the reproductive cycle when using the proposed drug "Estrosynchron". The drug blocks the secretion of pituitary gonadotropins, which inhibits the growth of follicles and the ovulation process and, accordingly, the manifestation of the phenomena of the sexual cycle. It was found that over the period (18-20 days) of feeding Estrosynchron in gilts after treatment, blood parameters decreased: total protein, globulin fraction, α1-globulin, α2-globulin fraction compared with the indicators before treatment. After treatment, there was an increase in the number of erythrocytes, hematocrit, platelet count and thrombocyte, as well as a significant increase in the average hemoglobin content in an erythrocyte and a decrease in the rate of erythrocyte coagulation. At the same time, studies of blood parameters provide additional information about the characteristics of breeding pigs, depending on the age and physiological state during reproductive use.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXV, Issue 1
Written by Tsvetomira BANCHEVA, Svetoslava STOYCHEVA, Tsvetelina DIMITROVA, Nikolay MARKOV, Lora MONDESHKA, Miroslav HRISTOV

The survival of the newborn in the first days is directly dependent on live birth weight. The indicator is related to the vitality and mortality of lambs, and also plays an important role in the later development of the young organism. Factors influencing live birth weight are genetic (breed, the effect of heterosis) and non-genetic (age, weight, body condition of the sheep, diet, year, season, month of birth, type of birth, sex, etc.). In all mammals, there is an "optimal" birth weight, as a result of which the birth process proceeds naturally and without complications. The objective of this survey is to investigate and summarize the factors that affect live birth weight of lambs.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXV, Issue 1
Written by Eliza CĂUIA, Dumitru CĂUIA

The paper aims to present some preliminary results regarding the effectiveness of different lower concentration of formic acid formulas, used by brushing procedure, in killing the varroa mites (Varroa destructor) which are found in the reproductive phase in the capped brood. To perform the experiments, honeybee capped brood combs from untreated colonies were collected and treated in two experimental groups with different dilutions (20%, 30%, 40%, 50%) of concentrated formic acid (85%) used in water-based and alcohol-based dilutions. The measurements were focused on the evaluation the varroa mite mortality, as response variable, at 72 hours from the treatment application. Out of the obtained results one could remark that the mortality of mites increased as the concentration of formic acid increased in different formulas. Highly significant differences were established between the two experimental groups as well as between the mortality of different categories of varroa. The results clearly show that the use of formic acid is very effective in varroosis control also when used in lower concentrations (30-40%) by brushing procedure. The results also show that new formulas could be further optimised by setting up a standard protocol to evaluate the critical stages of mites inside brood and their vitality, which are affected following the application of treatments.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXV, Issue 1
Written by Daniel RIZEA, Mihaela DUMITRU, Mihaela HABEANU, Georgeta CIURESCU, Silviu Ionut BEIA, Horia GROSU

Probiotics are important bacteria species due to their benefits to animal health. This study aimed to evaluate some characteristics of Enterococcus faecium (NCIMB 10415) and evaluated its survivability and capacity as a probiotic product. Gram-positive, catalase, antibiotics and haemolysis tests were screened using selective media. The strain was phenotypically characterized and biochemical profile using API 20STREP and identification by apiwebTM (Biomerieux (France) software were done (99.2% very good identification). After 24 h of incubation at 37°C, in aerobic conditions, E. faecium exhibits 11.88 Log10 with an optical density (OD 600 nm) yield reaching a maximum from 0.2 at the beginning of the exponential growth phase to 1.7 value. The safety of the strain was confirmed by non-haemolytic activity on TSA agar medium. The impact of 16 antibiotics on our strain ranged from intermediate (75%) to susceptible (12.5%), with resistance to colistin sulphate and erythromycin. Regarding the importance of antibiotics such as vancomycin, the analysis of the E. faecium profile revealed intermediate activity. These data suggested that these bacteria do not create a risk to animal health and may be considered a reliable candidate as probiotic source for application in poultry nutrition.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXV, Issue 1
Written by Paul Corneliu BOIȘTEANU, Roxana LAZĂR, Diana Remina MANOLIU, Mihai Cătălin CIOBOTARU, Marius Mihai CIOBANU

The study aimed to sensory evaluate and compare the colour, aroma, texture and taste attributes of six beef pastrami samples. The experimental batches were obtained in the Meat Processing Microsection of the University of Life Sciences Iasi and were formed to differ by two variation factors: the level of brine injected into the product (F1) and the amounts of ingredients introduced (salt/rapeseed oil/alfalfa powder) into the brine solution (F2). The most evident and significant differences (P < 0.01) were due to the increase in the percentage of brine introduced into the product. Thus, the sensory attributes for colour, aroma, texture (especially tenderness and juiciness) and saltiness were significantly influenced by the amount of brine injected. The batch that stood out with superior sensory characteristics was batch A because it showed favourable average scores for the attributes of tenderness, juiciness, elasticity, and the specific flavours of the brine additives did not negatively influence the characteristic flavour of the product.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXV, Issue 1
Written by Călin LAȚIU, Radu CONSTANTINESCU, Vioara MIREȘAN, Alexandru-Sabin NICULA, Diana Elena DUMITRAȘ, Tudor PAPUC, Paul UIUIU, Daniel COCAN

This study is the first reference regarding the length-weight relationships of freshwater fishes inhabiting one of the most important spawning waters of the endemic endangered Danube salmon (Hucho hucho). Fulton condition factor (K) was calculated for 1366 individuals belonging to 16 species from Ruscova River, north of Romania. Length-weight relationships were determined for 1362 specimens from 14 species. The smallest slope value (b) was determined for Romanogobio uranoscopus (b=2.2437) and the highest value for Telestes souffia (b=3.6058). The Danube salmon (Hucho hucho) showed positive allometric growth, having the calculated value of the slope of 3.3879. The mean values of Fulton condition factor (K) for the captured specimens were: Cottus gobio (1.161), Alburnus alburnus (0.3726), Alburnoides bipunctatus (0.8142), Barbus barbus (0.9434), Barbus carpathicus (0.9202), Chondrostoma nasus (0.8867), Romanogobio uranoscopus (0.8196), Phoxinus phoxinus (0.9888), Squalius cephalus (1.137), Telestes souffia (0.898), Barbatula barbatula (0.6693), Eudontomyzon danfordi (0.1293), Hucho hucho (0.8454) and Thymallus thymallus (0.9522).

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Published in Scientific Papers. Series D. Animal Science, Vol. LXV, Issue 1
Written by George-Cătălin MUNTEAN, Călin LAȚIU, Paul UIUIU, Radu CONSTANTINESCU, Vioara MIREȘAN, Tudor PĂPUC, Daniel COCAN

The monkey goby (Neogobius fluviatilis) is a species present in the ichthyofauna of Romania, which naturally inhabits the seaside area, the mouths of the Danube, the Danube, and the Danube tributaries lower sections. The species currently expands its range across the European continent, and it is now inhabiting new aquatic environments, including the Someș River catchment, in the Transylvania region of Romania. The purpose of this study is to analyse the biometric aspects regarding the Neogobius fluviatilis populations from the Someș River catchment. Specimens of Neogobius fluviatilis were collected from 9 locations situated on the main course of the Someș River and from a lake built on a small river from the Someș catchment, the Țaga Lake. The collected specimens were preserved, and morphometric analysis was conducted in the laboratory with the following biometric aspects being analysed: length classes distribution and the length-weight relationships (LWR), such as the Fulton condition factor (K) and the allometric growth. In the present research work, we managed to obtain important information regarding the biometric aspects of the monkey goby (Neogobius fluviatilis) population from the Someș River catchment.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXV, Issue 1
Written by Marcel Daniel POPA, Elena MOCANU, Viorica SAVIN, Floricel DIMA, Neculai PATRICHE

Climate change can affect the life cycle of fish reared in earthen ponds, especially in winter, when the metabolism is reduced and the fish no longer feeds due to low temperatures. In Romania, in recent years, winter temperatures have been higher than normal, justifying the need to assess biochemical changes in fish meat. The biochemical characterization of macronutrients in carp meat was performed by monitoring during the winter, the following parameters: moisture, proteins, lipids, ash, fatty acids in fish meat, temperature and oxygen of the water. The experiment was conducted between November 2020 - March 2021, the biological material being represented by common carp (Cyprinus carpio), aged one summer. At the beginning of winter, saturated fatty acids (25.80%) and monounsaturated fatty acids (49.03%) were found in a higher proportion compared to the end of winter, when polyunsaturated fatty acids had the highest percentage (55.38%) of the entire amount of lipids. The amount of protein, fat and ash during the winter period decreased but insignificantly, while the water content of the meat increased. The biological material recorded a physiological loss of 27.28% of the initial average mass.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXV, Issue 1
Written by Mihaela MOCANU, Lucian OPREA, Mirela CREȚU, Anca-Nicoleta (SĂVESCU) CORDELI, Lorena DEDIU

Fish represent a good source of animal protein which contains all the essential amino acids. Also, fish meat is an important source of valuable lipids, micronutrients, vitamins, and minerals with several benefits for human health. In this context, the biochemical composition of common carp (Cyprinus carpio), white bream (Blicca bjoerkna), barbel (Barbus barbus), asp (Aspius aspius),common bream (Abramis brama), ide (Leuciscus idus), Prussian carp (Carassius gibelio), European perch (Perca fluviatilis), and Pontic shad (Alosa immaculata) from the Danube River was studied to evaluate their nutritional value. Fish were captured in the year 2020, during the spring season (march-may), between km 169 of the river (Brăila) and km 197 of the Danube River (Gropeni). Fish samples were analyzed for water, protein, fat, moisture and ash, at the Nutrition Laboratory of Faculty of Food Science, University Dunărea de Jos, from Galați. From the obtained results we can conclude that the analyzed fish meat of some species from the Danube River represents a valuable source the consumers healthy.

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© 2019 SCIENTIFIC PAPERS. SERIES D. ANIMAL SCIENCE. To be cited: SCIENTIFIC PAPERS. SERIES D. ANIMAL SCIENCE.

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