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. LXIII, Issue 1
Written by Elena ILIȘIU, Vasile-Călin ILIȘIU, Răzvan-Aurelian RĂU, Cristian-Vasile ILIȘIU, Teodora UNGUREANU

Thirty male lambs from three genotype, Tsurcana (TA) und its crossbreed with Palas Meat Breed (PMB) and German Blackface (GBF) (ten from each genotype) were used to determine the effects of breed on growth performance and meat quality characteristics. Average daily gain in the period 0-153 days, final weight and warm carcass weight were higher in GBF x TA lambs than to the lambs from TA and PMB x TA groups, and hot slaughter yield were higher in TA compared to the lambs from GBF x TA and PMB x TA groups. Furthermore, except average daily gain and weight at 28 days (W28), 56 days (W56) and weaning weight (WW), the lambs from the three genotype did not show significant differences for the other traits (P>0.05). PMB x TA lambs had the lowest scores in terms of differences of juiciness and appearance than GBF x TA when compared with TA group, but higher scores in terms of differences of tenderness, flavour, the difference of specific lamb taste and overall difference. In conclusion, when the breed is to be decided, the PMB x TA lambs should be by consumers appreciated for meat quality and GBF x TA for growth performances.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXIII, Issue 2
Written by Elena ILIȘIU, Aurel GĂLĂȚAN, Andreea - Hortensa ANGHEL, Dorina NADOLU, Vasile-Călin ILIȘIU, Ion-Dumitru CHIRTEȘ

Crossbreeding of three French meat breeds rams and one R1 German Blackface (75%) x Tsigai (25%) ram with R1 crossbreed ewes German Blackface (75%) x Tsigai (25%) was carried out to determine the ram breed effects on productivity of ewes and growth performances of the lambs. A total of 151 crossbreed ewes R1 German Blackface x Tsigai were divided into four groups for mating with 4 rams from Berrichon du Cher (BC) - group 1, Blanche du Massif Central (BMC) - group 2, Mouton Vendèen (MV) - group 3, and R1 German Blackface (BF) - group 4, resulting in total 147 lambs. Ram breed had a significant influence on growth performances of the lambs. The lambs obtained from the R1 German Blackface ram were heavier than the lambs from groups 1 and 3 (P< 0.001) at birth, 28 day and 56 day. Significant differences were recorded between group 2 and 4 with regard at weight at 28 day (P< 0.01) and 56 day (P< 0.05). Body weight at 5 months in group 1 of crossbred lambs was significantly higher than to the crossbreed lambs obtained from the group 2 (P< 0.01), 3 (P< 0.05) and 4 (P< 0.01). The number of lambs born per ewe, number of lambs weaned per ewe, and lamb survival rate at weaning were similar among the four groups, while the lambs survival rate at 5 months at the lambs obtained from ewes mated to Blanche du Massif Central ram was higher compared to the others, the differences being significant (P< 0.05) compared to the lambs obtained from ewes mated to Mouton Vendèen ram.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXIII, Issue 2
Written by Mirela CREȚU, Victor CRISTEA, Angelica DOCAN, Lorena DEDIU, Raluca - Cristina ANDREI (GURIENCU), Anca-Nicoleta CORDELI (SĂVESCU)

The aim of this study was to evaluate the haematological profile of rainbow trout after applying of different intensities of feeding (FL1-2.5% BW day-1, FL2-3% BW day-1, FL3-3.5% BW day-1, FL4-4 % BW day-1, FL5-4.5 % BW day-1 and, ad libitum-FL6). Fish were reared in a recirculating aquaculture system (RAS), provided with twelve rearing units (in duplicate) for 44 days. Blood samples were collected from twelve fish on each experimental variant, and were made before and after the experimental trial. Red blood cell counts (RBCc), haematocrit values (Hct), haemoglobin concentration (Hb), mean corpuscular volume (MCV), mean corpuscular haemoglobin (MCH), mean corpuscular haemoglobin concentration (MCHC), total serum glucose (Glu) and total proteins (TP) were determined. Also, in order to determine the leukogram and the absolute number of leukocytes, blood samples were collected and used immediately to make smears. At the end of the experiment, ANOVA test revealed no significant changes (p>0.05) in the RBCc, Hct, Hb, MCV, MCH, MCHC and glucose concentration (Glu), while the total proteins (TP) from blood serum increased significantly (p˂0.05) with the increasing of the feeding intensity, except for ad libitum feeding, were total serum protein decreased. Regarding the total number of leukocytes, in general, it has not been registered statistically significant changes (p˃0.05). Lymphocytes (relative and absolute) have remained relatively constant, without significant variation (p˃0.05). The main conclusion that emerges from this current study shows that in the case of rainbow trout reared under recirculating aquaculture system conditions, feeding intensity does not significantly influence the haematological profile.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXIII, Issue 2
Written by Iulia GRECU, Angelica DOCAN, Alina MOGODAN, Lorena DEDIU, Victor CRISTEA, Tudor IONESCU, Ionut MIHALACHE

This study characterizes the haematological and parasitological profiles of the Pontic shad during its passage in the freshwater environment (Danube, Mm 74-77) as part of the reproduction migration. The investigations were carried out by classic methods on specimens captured during the 2011 and 2018 migrations. The obtained values for the haematological parameters, in the both samples sets, varied in the following ranges: red blood cells count (RBCc) 1.40÷3.82 (×106cells/μL), haemoglobin (Hb) 9,29÷16.87 (g/dL), haematocrit (Ht) 32,75÷88.00 (%), mean corpuscular volume (MCV) 146,37÷298.47 (fL), mean corpuscular haemoglobin (MCH) 38.32÷80,33 (pg), mean corpuscular haemoglobin concentration (MCHC) 15.14÷34,95 (g/dL). From parasitological point of view, in the analysed Alosa immaculata, the most frequently encountered parasitosis was produced by Contracaecum aduncum, in direct correlation with the shad’s diet. The prevalence of the infestation with this nematode was quite high in both data samplings. Extending the future research regarding the specie’s health condition at different times of migration, from Black Sea till Danube upstream, can complete the profile of the physiological reactions of this species with great ecological importance.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXIII, Issue 1
Written by Mariya CHUNCHUKOVA, Diana KIRIN, Dimitrinka KUZMANOVA

During summer 2019, 15 specimens of round-scaled barbell (Barbus cyclolepis Heckel, 1837) and 12 specimens of Orpheus dace (Squalius orpheus Kottelat & Economidis, 2006) from Topolnitsa River were collected and examined with standard techniques for parasites. Helminth parasites were recorded in 9round-scaled barbell specimens (60%) and 7 Orpheus dace specimens (58.33%) from Topolnitsa River. Only one parasite species was identified in both cyprinid fishes –the acanthocephalan species Pomphorhynchus laevis (Zoega in Müller, 1776). Bioindicator significance of established parasite species was discussed for ecological evaluation of the state of the studied freshwater ecosystem. New data for the helminths of round-scaled barbell and Orpheus dace from Topolnitsa River are presented.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXII, Issue 1
Written by Dimitrinka KUZMANOVA, Mariya CHUNCHUKOVA, Diana KIRIN

Maritsa River is related to the Aegean water collecting region. During 2015, a total amount of 23 specimens of perch (Perca fluviatilis Linnaeus, 1758) are investigated. Identified two species of helminths (Proteocephalus percae (Müller, 1780) and Acantocephalus lucii (Müller, 1776)) are reported for the first time as intestinal parasites of perch from the freshwater ecosystem of the Maritsa River. They are core and authogenic species for the helminth communities of P. fluviatilis. Analyses of the helminth communities were carried out at both levels: infracommunity and component community. Basic ecological characteristics and biotic indices were determined to evaluate ecosystem condition of the river. The results of these studies attest to the importance of perch's helminths and helminth communities as sensitive bioindicators.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXIII, Issue 2
Written by Diana KIRIN, Mariya CHUNCHUKOVA, Dimitrinka KUZMANOVA, Viliana PASKALEVA

During 2018, 22 specimens of the round-scale barbell from the Tamrashka River (Bulgaria) were examined for helminths. B. cyclolepis is an endemic fish species of the Maritsa River Water Collection. Five parasite species (Allocreadium isoporum Ergens & Lom, 1970; Caryophyllaeides fennica (Schneider, 1902) Nybelin, 1922; Pomphorhynchus laevis (Müller, 1776); Rhabdochona hellichi (Šramek, 1901) Chitwood, 1933; Rhabdochona gnedini Skrjabin, 1948) belonging to four classes and four families were fixed. The Tamrashka River is a new habitat for All. isoporum, C. fennica, P. laevis, Rh. hellichi and Rh. gnedini of B. cyclolepis in Bulgaria. The dominant structure of the parasite communities was discussed based on the level of the component community. The bioindicator role of the studied parasite populations and communities are presented.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXIV, Issue 1
Written by Diana KIRIN, Mariya CHUNCHUKOVA

Ecologoparasitological research was done based on the helminths and helminth communities of wels catfish (Silurus glanis Linnaeus, 1758) from the freshwater ecosystem of the Tundja, Aegean Water Basin. As a result of the examined seven specimens of wels catfish, three taxa of helminths were found. The dominant structure of the helminth communities was determined. Eustrongylides excisus Jägersiöld, 1909, larvae is a core species for helminth communities of S. glanis (P% = 42.86). S. glanis from the river ecosystem is a new host record for E. excisus. The basic ecological indices of the parasitic populations and communities were determined. The bioindication role of the established parasitic complexes was studied. An assessment of the ecological status of the studied biocenoses was carried out.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXIII, Issue 1
Written by Diana KIRIN, Mariya CHUNCHUKOVA, Dimitrinka KUZMANOVA, Viliana PASKALEVA

Ecoparasitological examinations of brown trout from the Tamrashka River, Aegean Water Basin, Bulgaria were carried out. Five species of helminths, one Trematoda species (Nicolla skryabini (Iwanitzky, 1928) Ślusarski, 1972) and four Nematoda species (Rhabdochona hellichi (Šramek, 1901) Chitwood, 1933; Raphidascaris acus (Bloch, 1779); Salmonema ephemeridarum (Linstow, 1872) Moravec, Santos et Brasil-Sato, 2008; Schulmanela petruschewskii (Shulman, 1948) Ivashkin, 1964) are determined. S. еphemeridarum was distinguished with the highest prevalence (50%). It is a core species for the helminth communities of the brown trout from the studied river ecosystem. Sch. petruschewskii is a new parasite species of brown trout and S. t. fario is a new host record for Sch. petruschewskii in Bulgaria. The Tamrashka River is a new habitat for N. skryabini, Rh. hellichi, R. аcus, S. еphemeridarum and Sch. petruschewskii as parasites of the brown trout in Bulgaria.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXII, Issue 1
Written by Diana KIRIN, Mariya CHUNCHUKOVA, Dimitrinka KUZMANOVA

During 2018, studies on the biodiversity and biomonitoring by the biological elements for environmental quality: Squalius orpheus (endemic of Balkan Peninsula) and its helminths and helminth communities were carried out. In 59 specimens of Sq.orpheus, four specimens of intestinal helminths are fixed (Allocreadium isoporum (Kowal et Kulakowskaja, 1957); Caryophyllaeus brachycollis (Janiszewska, 1951); Pomphorhynchus laevis (Müller, 1776); Rhabdochona denudata (Dujardin, 1845)). P. laevis is distinguished with the highest prevalence and mean intensity (66.10% and 1.85, respectively). A. isoporum, P. laevis and Rh. denudata are core species for the helminth communities of Orpheus dace, while C. brachycollis is a component species. The eutrophication effects on the pathways of the parasitic flow and the structure of the helminth communities were traced. The bioindicator significance of the parasitic complexes was discussed.

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

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