VARIOUS FACTORS AFFECTING DRESSING PERCENTAGE OF COMMERCIALLY CULTURED CYPRINID FISH IN CARP FISH PONDS IN SERBIA

Osnovni cilj istraživanja je utvrđivanje randmana konzumnih ciprinidnih riba s tri ribnjaka u Srbiji. Uzorci dvogodišnjeg i trogodišnjeg šarana (Cyprinus carpio, L.), dvogodišnjeg tolstolobika (Hypophthalmichthys molitrix) i dvogodišnjeg amura (Ctenopharyngodon idella) uzeti su u zimskom periodu sa ribnjaka na kojima se proizvodnja odvijala u poluintenzivnom sustavu proizvodnje. Trogodišnji šaran (Cyprinus carpio, L.) je uzorkovan sa dva ribnjaka, pri čemu je na jednom u hranidbi bila zastupljena kombinacija ječma, kukuruza i pšenice, u omjeru 40:30:30, dok je na drugom vršena hranidba sa kompletnim krmnim smjesama. Također je uzet uzorak i dvogodišnjeg šarana sa ribnjaka na kojem je hranidba vršena kompletnim krmnim smjesama. Randman je bio najpovoljniji kod šarana (67%), zatim kod tolstolobika (62%), a najnepovoljniji kod amura (60%) (p<0.01). Dvogodišnji šaran je imao najpovoljniji randman (66%), slijedi jednogodišnjak (64%), a najnepovoljniji randman bio je utvrđen kod trogodišnjeg šarana (58%) (p<0.01). Randman je bio bolji kod dvogodišnjaka hranjenog peletiranom hranom (68%), u odnosu na šarana iste starosti hranjenog kukuruzom i pšenicom (66%) (p<0.01). Vrijednosti randmana izmjerene kod trogodišnjaka, uzgojenog u poluintenzivnim uvjetima, prihranjivanog ječmom, kukuruzom i pšenicom bile su u prosjeku 56%, a kod trogodišnjeg šarana, hranjenog peletiranom kompletnom krmnom smjesom 59%. Vrsta ribe, starosna kategorija, uzgojni sustav i način hranidbe pokazali su značajan utjecaj na randman. Dvogodišnji šaran hranjen kompletnom krmnom smjesom odlikovao se najpovoljnijim randmanom i većom težinom fileta, što je rezultat manje težine unutarnjih organa i pripadajućeg masnog tkiva. Ovi rezultati mogu pomoći u izradi strategije za određivanje najpovoljnijih sirovina za potrebe prerađivačke industrije.The aim of this study was to determine the yield carcass of all categories of cyprinid fish reared in ponds in Serbia. Samples of two and three-year old carp, two-year old silver carp and grass carp were taken in the winter from a pond where the production is organized in a semi­intensive system. The three­year old carp was sampled from two ponds. In one case, it fed on barley, maize and wheat in the following proportions 40:30:30, while in the second case it fed on complete diet mixtures. Also, the samples of two­year old carp were taken from ponds where they fed on complete feed mixture. Dressing percentage was the most favourable in common carp (67%), followed by silver carp (62%), and it was the least in grass carp (60%) (p<0.01). The best yield (66%) was obtained in two-year old carp, followed by one-year old carp (64%), and the worst yield was determined in three-year old carp (58%) (p<0.01). Carcasses yield was better in two-year old carp fed on pelleted feed (68%) than in carp of the same age fed on grains (66%) (p<0.01). The values of dressing percentage measured in three-year old carp reared in the semi-intensive system was 56%, and 59% in three-year old carp fed on pelleted complete feed mixture. Fish species, age, system of husbandry and diet showed a significant effect on carcasses yield. The highest dressing percentage and weight of fillets was noted in two-year old carp fed on complete feed, and it was a result of lower weight of internal organs and associated fat. The obtained results may be helpful in creating the best strategy for the selection of raw fish for fish manufacturing

Automatic Recognition of Emotions in Text

Report published in the Proceedings of the National Conference on "Education and Research in the Information Society", Plovdiv, June, 2018With the rapid development of information technology and the expansion of the Internet, social network users and bloggers generate a huge amount of emotionally rich text. The automatic classification of emotions in the text is an area of interest to both social sciences and applications, such as the discovery of attitudes towards a given product. This paper presents and explores the machine learning methods used to classify emotions in the text. A comparative study of the effectiveness of the classification of the main methods of solving this task has been made. It also presents results from a study of correlations between the main types of emotions in the text.Association for the Development of the Information Society, Institute of Mathematics and Informatics Bulgarian Academy of Sciences, Plovdiv University "Paisii Hilendarski

Influence of fluid therapy for stabilization of dogs in shock caused with different etiology

The aim of this work is the portrayal of shock in a small practice and its timely and proper treatment. This study included a total of 8 dogs that are numbered from 1 to 8. In all animals was performed complete general clinical index, the venous route was applyed, and are accompanied by clinical parameters during treatment. Research showing that all animals were received in shock. In all our study patients, fluid therapy was occurred to update and maintain lost volume, exception makes patient number one witch with respect to the diagnosis and classification of shock succumb on other therapy. All patients received fluid therapy in the form of one or multiple bolus colloid fluids Hydroxyethyl Starch 6% (HAES-a) dosage of 3-15 ml/kg with a physiological solution in the dosage of 10-50 ml/kg. Our study showed a positive response after applications of bolus HAES and physiological solutions. Dogs 1, 2, 5 and 6 after therapy was stabilize body temperature (TT), CRT, and the frequency. The most relevant example is the dog number 2, who received value of TT 40.9, CRT 4 seconds, and the frequency was 222, which the value for 18 hours changed to TT 38.4, CRT 3 seconds and the frequency was 180th. Dogs (5, 6) gave a positive response to the protocol to stabilize shock. Dogs 3, 4, 7 and 8 have an initial positive reactions in some parameters, but etiological situation has led to deterioration and mortalities. We have concluded that the time of applications and attempt have significant role in the successible treatment to stabilize a patients. Significant results are possible only if treatment is timely and adequately (a combination of colloids and crystalloid). The basis of shock therapy is the correction hipovolemia appropriate liquid, intravenous applied in the fastest possible time

Immunohistochemical investigation of FIPV3-70 antigen expression in the ileum of cats with effusive feline infective peritonitis

One of the most common infectious causes of cat mortality is feline infective peritonitis (FIP), along with panleukopenia and viral upper respiratory tract infections. FIP is more likely to affect cats whose immune system is weak or suppressed. It is thought that the infection of macrophages and monocytes plays a major role in the pathogenic process. In order to set a definitive diagnosis for this infectious disease, a histopathological examination of tissues, and feline coronavirus (FCoV) detection by immunohistochemistry (IHC) is necessary. In this investigation, 15 cats between the ages of 5 and 24 months with clinical suspicion of FIP, underwent post-mortem necropsy, pathohistological and immunohistochemical examination. The results showed that all the cats had abdominal effusion with pyogranulomas throughout the abdominal serosa. Ten out of fifteen cats were FIP positive using immunohistochemical methods. This method also showed the antigen deposition in the macrophages thus confirming their role in the pathogenesis of FIP

Effects of doxycycline treatment on hematological and blood biochemical parameters in dogs naturally infected with Ehrlichia canis

Ehrlichia canis, the etiologic agent of canine monocytic ehrlichiosis (CME), is mainly transmitted by the brown dog tick Rhipicephalus sanguineus. Clinical signs of the disease can be various, depending on the stage of the disease. Typical changes in hematological and blood biochemical parameters are: severe thrombocytopenia, mild to marked non regenerative anaemia and hypoalbuminemia. In order to present the effects of the treatment protocol on several hematological and biochemistry parameters, 34 Ehrlichia canis positive dogs were compared before and after treatment with doxycycline 10mg/kg/day, in duration of four weeks. Besides the clinical sings and laboratory findings, diagnosis was confirmed by antibody tests (Bionote, Korea, AGROLABO S.p.A., Italy). The most common clinical sings were depression, lethargy, pyrexia, vomiting and anorexia. Hematological analyses were performed on the automatic hematology analyzer Exigo ЕоѕVet (Sweden), while biochemistry analyses (alanine aminotransferase, aspartate aminotransferase, urea, creatinine, albumin, total protein, globulin and alkaline phosphatase) were performed using the automatic analyzer ChemWell 2910 (Awareness Technology, INC, USA). Statistically significant difference (p<0.05) in hematology changes was present regarding the red blood cells count, platelet count, hematocrit and hemoglobin before and after treatment. Hypoalbuminaemia (Mean 19.21 ±4.96 g/l) was the only serum biochemistry parameter with significant change before and after treatment, as well. Treatment with doxycycline in patients with E.canis resulted in significant increase of hematology parameters (red blood cells, hemoglobin, haematocrit and platelets), as well as albumins in serum