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. LXVI, Issue 1
Written by George NICA, Livia VIDU

In order for animals to express their genetic potential and their production not to be affected, their welfare is a must. This study analyzed the origins of the concept of welfare and what animal welfare means, which implies the 5 freedoms that must be respected. Then, it was briefly analyzed what the consumer's consent paying a higher price for products obtained from farms that applied friendly animal technologies means. After that, it was analyzed the most important aspects that the farmer faces and can affect the animals welfare. At the end, the interaction of man-animal was brought into account, which has an enormous importance for animals welfare.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXVI, Issue 1
Written by Victor NIȚĂ, Mădălina GALAȚCHI, Magda NENCIU

Fish biodiversity is a key indicator of the health of a waterbody and the structure and function of fish communities are considered good indicators of the ecological status of marine ecosystems. Therefore, the long-term assessment and the development of predictions regarding the size and productive capacity of fish populations are necessary, aiming at ensuring an ecosystem-based management of living resources. In the frame of the revision of the Danube Delta Biosphere Reserve Management Plan, an updated evaluation of fish species present in the marine zone (ROSCI0066) was performed. The scientific fishing (by survey trawling and gillnetting) revealed a rich ichthyofauna: 32 taxa, belonging to 21 families were identified. The species array is diverse, including both economically important fish (turbot, shads, anchovy, sprat) and species of high conservative interest (sturgeons), emphasizing the crucial importance of this area as feeding and spawning ground of Black Sea ichthyofauna.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXVI, Issue 1
Written by Daniel COCAN, Cristian REVNIC, Paul UIUIU, Tudor PĂPUC, George-Cătălin MUNTEAN, Călin LAȚIU

The monitoring of ichthyofauna from rivers and rivulets crossing urban areas is important in the context of preserving ecosystems under continuous anthropic pressures. In addition, new invasive species may be observed. This study aims to present current data on the ichthyofauna of Becaș River, which has its entire course in Cluj-Napoca, Romania. For this purpose, alpha diversity, LWRs, Fulton condition factor (K) and relative condition factor (Kn) were determined. In total, 1216 specimens were analyzed, classified into 13 species, from 8 families. The species with the highest abundance was Pseudorasbora parva (46.46%), and the species with the lowest abundance were Cyprinus carpio and Perca fluviatilis (0.16%). Regarding LWRs, the lowest value of the b coefficient was obtained for Rutilus rutilus (2.7651) and the highest value for Phoxinus phoxinus (4.0868). The highest value of K was obtained for C. carpio (1.815) and the lowest value for Cobitis elongatoides (0.5942). The Kn was between 0.5436 (Gobio carpathicus) and 1.0330 (C. elongatoides).

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Published in Scientific Papers. Series D. Animal Science, Vol. LXVI, Issue 1
Written by Ahmet Onder USTUNDAG

Stinging nettle (Urtica dioica) which belong to the family Urticaceae in the major group Angiosperms (flowering plants) is a wild, herbaceous, perennial flowering plant. Stinging nettle is considered a weed by intensive agriculture. However, nettle leaves are good sources of protein, fat, carbohydrates, vitamins, minerals and trace elements. Besides, stinging nettle leaves contain a significant number of biologically-active compounds such as terpenoids, carotenoids and fatty acids, as well as various essential amino acids, chlorophyll, vitamins, tannins, sterols, polysaccharides, isolectins and minerals. Stinging nettle has antiproliferative, anti-inflammatory, antioxidant, analgesic, anti-infectious, hypotensive and antiulcer properties, as well as the ability to prevent cardiovascular diseases thanks to the biologically-active compounds it contains. Due to its biological properties, availability and simple processing technology, stinging nettle can be thought of as an excellent nutritional supplement for poultry. The aim of this review is to evaluate the potential of stinging nettle utilization in poultry nutrition in light of the studies conducted.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXVI, Issue 1
Written by Veronica-Denisa LUNGU, Daniela IANIŢCHI, Marius MAFTEI, Paula POŞAN, Nela DRAGOMIR, Camelia HODOŞAN, Iulian VLAD

Plant derivatives are high biological value products, with sensory properties appreciated by consumers, which are easily obtained, relatively cheap and can be successfully used as meat analogues. Additionally, some plant derivatives result as waste from the vegetable products industry and can be successfully valorized in meat compositions for their content in vitamins, antioxidants, unsaturated fats, minerals or fibers. Consequently, when used in the meat industry, they can improve the structural, sensory and nutritional characteristics of the finished products. Due to their high fiber content, they can be successfully used to increase yields, but also to reduce the potential caloric value of meat products, with positive effects on health. The paper aims to analyze scientific research referring to the use of plant derivatives as meat analogues and their effects.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXVI, Issue 1
Written by Mariia VOROBEL, Vasyl KAPLINSKYI, Oleg KLYM, Olha STEFANYSHYN, Alla HUNCHAK, Oksana SMOLYANINOVA, Nataliia PAKHOLKIV, Halyna BILOVUS

The key to the intensive course of metabolic processes in the body of ruminants, and therefore to their high productivity, is the balance of rations according to the optimal level of vitamin and mineral nutrition, which is achieved through the use of balancing feed supplements. Providing the animal body with the necessary nutrients and biologically active substances determines not only the level of productivity, but also the amount of feed costs per unit of production, which ultimately determines the profitability of the industry. Therefore, the basis of the planned research was to find out the influence of different levels of vitamin and mineral nutrition on the ruminal metabolism of cows and their milk productivity. Based on the results obtained in the course of the research, the prospective use of the improved vitamin-mineral supplement in the composition of compound feed K 60-32-89 (optimized for Phosphorus and Sulfur) was experimentally confirmed in the feeding of dairy cows during the summer grazing period. A balancing feed supplement is enriched with biologically active substances that are deficient for Pre-Carpathia in a complex with improved compound feed it provides the optimal level of vitamin and mineral nutrition of ruminants in accordance with the physiological need, which contributes to increasing the nutritional value of feed and has a positive effect on the studied indicators of ruminal metabolism. In particular, feeding dairy cows with optimized vitamin-mineral supplement contributes to an increase in the number of microorganisms (amylo-, cellulose- and proteolytic) in the forestomachs and their enzymatic activity. This causes intensive hydrolysis of feed carbohydrates and increases the level of volatile fatty acids by 14.1% while reducing ammonia nitrogen by 11.8%, which is evidence of the activation of metabolic processes involved in energy and synthetic reactions. By analogy with the increase in the intensity of metabolic processes in the rumen of ruminants as a result of a balanced diet by the limiting biologically active substances due to the use of vitamin-mineral supplement, the level of milk productivity increases by 10.8% and the chemical composition of milk improves (dry matter, fat, protein, milk sugar, calcium) compared to the P 60-5M premix.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXVI, Issue 1
Written by Dimitar TANCHEV, Gergana BALIEVA

African swine fever is a disease that affects representatives from Suidae family and leads to serious economic losses and ecological damage to swine population. A major role in the etiology of the disease is played by wild boars, both as a vector and as a reservoir. Due to this fact, monitoring the spread of the disease among feral pigs is one of the main factors for the prevention of the disease. For this reason, in 2019, the Bulgarian Food Safety Agency launched 'Module “Hunt” application. The application allows hunters both easy and quick sending of data on the sample taken from a shot or found dead animal, as well as checking the result just by writing the sample number, while location, date and time of taking the sample are obtained automatically by the application. The current study analyzed both application performance (input, output of data) and data on number of samples taken from hunted feral pigs, percentage positive results from shot animals, proportion of samples taken from wild boars found dead with ratio of positive samples from them.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXVI, Issue 1
Written by Steluța Camelia SURMELI (SAVA), Livia VIDU, Monica Paula MARIN, Bogdan Alexandru SAVA, Carmen Georgeta NICOLAE

For the efficient and sustainable use of water in recirculating aquaculture systems, in order to improve water quality, zeolite filters have been used by retaining ammonia. The efficiency of the filters was tested in systems with volumes of 220 liters of water, populated with batches of 36 carp seedlings (Cyprinus carpio) in summer I. Horizontal filters with zeolite bed and composite filters, obtained from a granular mixture of silicate glass and zeolite, were used when filtering the water. For the determination of ammoniacal nitrogen, the continuous concentration criterion (CCC) and the maximum concentration criterion (CMC) were used. After 24 and 48 hours of water filtration using clinoptilolite filters, it was found that the maximum permissible values of ammonia in the water were not exceeded. Ammonia is absorbed in relatively large quantity, zeolite improves the filtration yield, which recommends the use of these types of filters in controlled recirculating systems in aquaculture.

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

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