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. LXIV, Issue 2
Written by Andra ŞULER, Minodora TUDORACHE, Gratziela BAHACIU, Paula POŞAN, Lucica NISTOR, Ioan CUSTURĂ, Marius MAFTEI

Included in the large spread high risk group, the Listeria bacteria genus can be diffused throw food products, causing the Listeriosis disease. Listeriosis is a bacterial infection which in serious forms and inadequately treated can reach a 70% mortality. In this study the bacteria were isolated from several categories of samples (poultry and bird organs, raw pork meat, raw beef meat, processed pork meat), which were collected from slaughterhouse houses and department stores. From analysed samples 40% of isolated strains were found in raw pork meat, 25% in raw beef meat, also 25 % in poultry and bird organs and 10% in processed pork meat. The isolation and identification technique was done with an official method, following these steps: pre- enrichment in unselective liquid mediums, enrichment in selective liquid mediums, isolation and identification, identity confirmations.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXIV, Issue 2
Written by Roxana Nicoleta RAȚU, Marius Mihai CIOBANU, Răzvan Mihai RADU-RUSU, Marius Giorgi USTUROI, Mihaela IVANCIA, Marius Gheorghe DOLIȘ

The dairy industry occupies a very important place in the economy of our country. In order to obtain high quality dairy products, it is necessary to use a good quality raw material milk, which involves determining its chemical composition in particular. At present, on the shelves of our stores in the country there are products obtained from the processing of cow's milk, buffalo's milk, goat's milk and, last but not least, sheep's milk. For these reasons, in this paper we set out to perform a chemical analysis of milk from these species of interest. Following the determinations, the sheep's milk proved to be with the highest percentage of fat (7.70 ± 0.06%), SNF (11.40 ± 0.09%), TS (19.10 ± 0.04%), TP (4.98±0.04%) and in the casein content (3.65 ± 0.04%) being followed by the milk collected from the buffaloes. This study can support processors, especially those who process only cow's milk but also consumers who will be able to evaluate their products.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXIV, Issue 2
Written by Ioana Cristina ȘERBAN, Nela DRAGOMIR, Livia VIDU

School milk program are common in many countries around the world for a good reason. Nutritionists and social policy experts believe that encouraging healthy eating should be the main goal of this general and universal program. The benefits of school milk are many, so milk and dairy products are considered the main sources of nutrients needed for the harmonious development of children. The paper provides information on the benefits of consuming by dairy products on the student's body, the presentation of the categories of dairy products that are included in the program and how this program has influenced the consumption of milk among the population.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXIV, Issue 2
Written by Viktor KHALAK, Bogdan GUTYJ, Olexander BORDUN, Olha STADNYTSKA, Maria ILCHENKO

The article presents the results of studies of protein metabolism and their relationship with fattening and meat qualities of young pigs of large white breeds of different interbreed differentiation according to the index of A. Sazer - H. Fredin. It was found that the biochemical parameters of the serum of young pigs of the experimental group correspond to the physiological norm of clinically healthy animals. Taking into account the interbreed differentiation of young pigs of the large white breed according to the index of A. Sazer - H. Fredin, it was found that the animals of group II outperformed peers of I on average daily live weight gain during control fattening, age of 100 kg live weight, fat thickness at 6-7 thoracic vertebrae, the length of the chilled carcass, the length of the bacon half of the chilled half-carcass on average by 4.03%. The pairwise correlation coefficient between the biochemical parameters of blood serum, fattening, and meat qualities of young pigs of large white breeds range from -0.533 to +0.528.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXIV, Issue 2
Written by Paula POSAN, Eugenia SOVAREL, Marius MAFTEI, Andra SULER

Environmental factors define an ecological potential that ensures a certain biological productivity of the hunting management fund. A first step in establishing the ecological potential of game management funds is to direct efforts to qualitatively and quantitatively assess all factors that influence biological productivity. Monitoring the dynamics of wild boar herds is important because it is necessary to understand the relationships and correlations that are established between different species of animals in the same territory (prey-predator), but also between the studied species and the existence of an optimal ecological factors: biotic, abiotic and anthropogenic, to ensure the viability of the population. In this paper, was made an evaluation of wild boar herds dynamics, recorded between 2015 and 2020, using data from the Ministry of Environment and according to the assessment keys for hunting territories. Statistical elements were established in order to have a more accurate calculation of the wild boar population trend. It is necessary to know the wild boar herds evolution, in order to develop a long-term strategy, in which hunters also have a key role to play in conserving biodiversity.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXIV, Issue 2
Written by Maria Desimira STROE, Mirela CREȚU, Angelica DOCAN, Lorena DEDIU, Floricel Maricel DIMA, Neculai PATRICHE

This experiment was carried out to evaluate the effects of the commercial probiotic Betaplus®Ultra on the haematological profile (red blood cell (RBC) counts, haemoglobin (Hb) concentration, haematocrit (PCV), mean corpuscular haemoglobin (MCH), mean corpuscular volume (MCV) and mean corpuscular haemoglobin concentration (MCHC), glucose and total proteins) and immune response of young of the year Acipenser stellatus. In this sense, a 93- day experiment was carried out with six experimental variants (five different probiotic concentrations: C1 - 1-1.28×1013 CFU, C2 - 2.56 ×1013 CFU, C3 - 3.84×1013 CFU, C4- 5.12×1013 CFU, C5 - 6.4×1013 CFU and C0 - control group). All the trials were performed in duplicates. Based on our results, no significant differences (p>0.05) were observed in the values of RBC, PCV, MCV and MCHC, while significant differences (p˂0.05) were registered in the case of Hb and MCH. Regarding the immune response, no significant differences were registered in the values of leukocytes, lymphocytes neutrophils, monocytes and eosinophils (p˃0.05) and only, thrombocytes and basophiles were significantly influenced (p˂0.05) by the probiotic concentration. The results suggest that the probiotic Betaplus®Ultra could be used effectively as a probiotic for the use in aquaculture.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXIV, Issue 2
Written by Delly RUMONDOR, Moureen TAMASOLENG, Heidy MANANGKOT, Rahmawaty HADJU, Wahidah MA’RUF

The purpose of this study was to evaluate the microstructure of the sausage meat of laying hens without giving Angkak (0%), with 0.5% Angkak, 1% Angkak and 1.5% Angkak and storage at 0 days, 10 days, 20 days and 30 days at 50C with the method Scanning Electro Microscope (SEM). The method used is descriptive observation using a Scanning electron microscope. The results showed that the higher the addition of Angkak concentrations in sausages the greater the cavity on the surface of the sausage structure. At 0 day storage, the surface of the structure was still compact and there was little bacterial contamination. After 10 days of storage, the surface texture began to loosen and the cavities began to spread. Storage for 20 days the surface texture of the sausage is more cavity and begins to grow bacteria. 30 days of storage, there was a visible growth of fungus on the surface of the meat sausage. The conclusion is that the addition of Angkak affects the formation of starch granules and texture on the sausage surface. At 20 days of storage there was no effect of preservation on the addition of Angkak, it was shown the growth of bacteria and fungi. Furthermore, the 30 day shelf life creates a new ecosystem that allows mold to appear on the surface of the sausages.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXIV, Issue 2
Written by Ștefan-Mihai PETREA, Ira-Adeline SIMIONOV, Alina MOGODAN, Aurelia NICA, Mihaela NECULITA, Dragos Sebastian CRISTEA

In an integrated aquaponic system, the phosphorus present in the technological water can be recycled in the plant biomass, depending on a series of elements related to system design and production technology. The present research aims to identify the influence of crop culture density on phosphorus dynamics in an integrated stellate sturgeon – spinach recirculating production system, by using aquaponic substrate technique. A 44 days experimental trial was performed in order to test three spinach culture densities, in triplicate, as follows: B1H - 59 crops/m2, B2H - 48 crops/m2, B3H - 39 crops/m2. A control variant (with no plants) was used, in order to estimate the spinach biomass capacity to remove phosphorus. Phosphorus removal rate had an upward trend at B1H, B2H and B3H, with an average value of 13.38 ± 5.45 g/m2/day at B1H, 11.57 ± 5.25 g/m2/day at B2H and 10.39 ± 4.4 g/m2/day at B3H. Statistically significant differences (p<0.05) were recorded between B1H and the rest of experimental variants. Although the highest phosphorus removal rate was recorded at B1H, some spinach plants manifested signs of stress, fact that might affect the phosphorus removal rate capacity during a longer experimental period.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXIV, Issue 2
Written by Victoria BOGDAN, Valeria VRABIE

In gnotobiological experiments, the influence of a new microbial associations developed by combining strains of beneficial microorganisms on the body mass, numerical value of enterococci and some biochemical blood indices of calves and piglets, and their effectiveness was investigated. The remedy under test was administered orally, immediately after the birth of the animals, 30 minutes before receiving colostrum and then once a day, over a day, until the age of 9 days. The animals were monitored for 30 days. It was observed that in animals with intestinal dysfunction the investigated remedy contributed to the disappearance of diarrheal symptoms, thus contributing to the increase of the general resistance of the organism, preventing dehydration of the organism and decreasing mortality.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXIV, Issue 2
Written by Delia-Gabriela DUMBRAVĂ, Diana-Nicoleta RABA, Ileana COCAN, Camelia MOLDOVAN, Mirela-Viorica POPA, Mariana-Atena POIANĂ, Mărioara DRUGĂ, Carmen Daniela PETCU

Basil (Ocimum basilicum), lovage (Levisticum officinale) and thyme (Thymus vulgaris) are aromatic plants highly valued and used by consumers around the world for the flavor they give to the foods in which are added. Because these plants are not always available fresh on the market, in order to be able to enjoy them longer, many consumers choose to either dry or freeze them at home. The purpose of this paper was to study the influence of traditional drying (for 7 days in dark room, at a temperature of 20-22°C) and freezing (at -18°C) on the content of vitamin C, chlorophylls and carotenoids from basil, lovage and thyme leaves. Vitamin C content was determined by iodometric method, and concentration of chlorophylls and carotenoids by a spectrophotometric assay. The determinations were performed on fresh plants, immediately after the drying process and at 2 months of storage in a dry state, respectively after 7days of freezing and after 2 months of storage in the freezer. In fresh samples, the highest concentration of vitamin C was found in lovage, followed by thyme. Fresh lovage also showed the highest content of chlorophyll and carotenoid. The experimental data showed that in the preserved plants the content of vitamin C, chlorophylls and carotenoids decreases, compared to the fresh ones, the losses being higher after the traditional air drying, than after freezing process. For both dried and frozen plants, a decrease in the concentration of the compounds mentioned above was found after 2 months of storage under specific conditions, but the losses were higher during the storage of dried plants.

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

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