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 Aurelia NICA, Mihai-Stefan PETREA, Alina MOGODAN, Ira-Adeline SIMIONOV, Victor CRISTEA

The present research aims to evaluate the impact of both dietary vitamin E and dietary sage supplementation on growth performance of koi carp fingerlings, reared in a partial recirculating aquaculture system. Koi carp specimens with an average individual biomass of 5.1 ± 0.4 g were equally distributed, as follows: V1 - diet supplemented with 1% vitamin E (V1), respectively, V2 - diet supplemented with 1% sage. A 5% BW (Body weight) daily feeding ratio was applied. During the 49 days trial, individual biomass measurements were performed at initial, after 8, 15, 25 and 37 days, as well as at the final stage of the experiment. The specific growth rate indicates a superior fish production at V2 (3.30%BW/day), compared to V1 (2.75%BW/day). Also, better FCR values are recorded at V2 (1.28), compared to V1 (1.62). The Protein efficiency ratio (PER) results indicate a better ability of V2 koi carp specimens to utilize proteins (1.39), compared to V1 specimens (1.10). Thus, dietary supplementation with 1% sage has a superior effect on growth performance of koi carp fingerlings, compared to 1% vitamin E dietary supplementation.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXIV, Issue 2
Written by Tsvetelina NIKOLOVA

Originated in ancient times, mulberry silkworm farming is a cost-effective sub-sector of agriculture. The strong dependence on food needs and especially the seasonality and distribution area of mulberries are limiting factors in the rearing of larvae.In our country Morus alba grows well and gives high yields of foliage in certain seasons of the year due to its characteristics. The resulting leaf mass has a high nutritional value. An alternative to nutrition is artificial food. It allows for growing in any season of the year, regardless of external climatic conditions. Some plant extracts are food stimulants and improve food intake, growth and even disease resistance. The aim of the present study was to test a hybrid I1xVB1xH2xHB2 created in Scientific Center on Sericulture, Vratsa, Bulgaria, for susceptibility to artificial food with added extract of Origanum vulgare L. as a growth stimulant. Tracking the most important biological, reproductive and technological features of silk larvae and butterflies; Artificial food was readily accepted by Bombyx mori L. Higher values were observed in the experimental groups fed with artificial food and added extract, we observed the growth intensity of the larvae and their viability.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXIV, Issue 2
Written by Anca Nicoleta CORDELI (SĂVESCU), Lucian OPREA, Mirela CREȚU, Mihaela MOCANU

A feeding trial was conducted to determine the effects of different feeding levels on growth performance and body composition. During 31 days, the experiment was carried out in the “Dunărea de Jos” University facilities from Galați, Romania. 720 fish, with an initial weight of 10.92 ± 0.17 g, were randomly distributed in twelve RAS rearing unit, with the same stocking densities. Four experimental variants were created, in triplicate: V1 - 3% from body weight per day (% BW day-1), V2 - 3.9% BW day-1, V3 - 4.9% BW day-1 and V4 -6% BW day-1. Fish were fed with 45% crude protein and 16% lipids at a feeding frequency of three meals per day. At the end of the experiment, significant differences (p˂0.05) were recorded between the four experimental variants. The body composition showed significant differences (p<0.05) also. The highest protein content and the lowest lipid content being recorded in variant V4 with 6% BW day-1.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXIV, Issue 2
Written by Mihaela MOCANU, Lucian OPREA, Anca Nicoleta CORDELI (SĂVESCU), Mirela CREȚU

Alosa immaculata represents one of the most appreciated fish, mainly due to the high nutritive quality of meat. This study aimed to investigate the age, structure, growth and mortality parameters for Pontic shad population in the Romanian sector of the Danube River (km 169- km 197). Sampling was carried out from March to June 2020 during the migration season. According to the age, distribution varied from 2 to 7 years, being dominated by 4-year-old fish. Using the ELEFAN program in the FiSAT II computer package, the growth parameters based on length-frequency analysis were: FL∞=43.05, and K=0.51 year-1. The length-weight relationship (L - W) was W = 0.069 × L2400 (R2 = 0.77). Total mortality (Z) had a value of 2.32, while the natural mortality (M) was 0.77 year--1 at an annual average temperature of 14.52˚C. The fishing mortality was computed as F = Z – M and had a value of 1.55 year-1.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXIV, Issue 2
Written by Sony Arthur Ely MONINGKEY, Ronny Agustinus Victor TUTUROONG, Ingriet Deybie Rinny LUMENTA

This study aims to obtain the best ration using corn cane in complete feed for rabbit production performance in terms of feed consumption, weight gain and feed conversion. it used 30 male rabbits of the New Zealand White strain in the range of 435-1.037 g were used. The ration consists of a mixture of corn sugarcane and other feed ingredients, such as corn, coconut meal, pollard, bran, sugar drops, and minerals purchased from animal feed stores. The formulated feed ingredients have a complete feed without using grass. The treatments carried out were corn cane in complete feed in the form of pellets as follows: R0 = feed without corn cane, R1 = feed with 10% corn cane, R2 = feed with 20% corn cane, R3 = feed with 30% corn cane, and R4 = feed with 40% corn cane. Results showed that the highest feed consumption occurred in treatment R3, 72.81 g/head/day. The highest weight increment was observed in treatment R3, 23.24 g/head/day. However, treatment R3 gave the lowest food conversion. It indicates that this treatment is more efficient feed to use. This study also concluded that the use of 30% corn cane gave the best performance.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXIV, Issue 2
Written by Alexandra PĂDURARIU, Stelian Vasile DĂRĂBAN, Vioara MIREȘAN

Blood metabolic profiles are widely used to monitor health, reproductive and nutritional status. In the last few years, the evaluation of oxidative stress level of the organism has contributed increasingly as a complementary tool in the evaluation of metabolic status. The aim of this paper was to investigate the possible influence of age and physiological status on blood metabolic profile: Hb, PCV, TP, Creatinine, Glucose, TL, Cholesterol, Triglycerides, ALT and AST in ewes. We also measured two antioxidant enzymes, GPx and SOD to evaluated the oxidative stress level and establish the relationship between those and variation of biochemical parameters. The results showed that all the blood parameters determined in serum, were within or close to normal range value for healthy ewes and were significantly (P<0.05) affected by the age and variations of physiological status. A strong correlation (P<0.01) was observed in lactation period between antioxidant enzymes and lipid profile. Taking the results together suggests that age and physiological status have to be taken into consideration for a correct interpretation of the serum chemistry values of sheep.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXIV, Issue 2
Written by Marius Giorgi USTUROI, Roxana Nicoleta RAŢU, Răzvan Mihail RADU-RUSU, Mihaela IVANCIA, Alexandru USTUROI

Aim of this research was to determine the fatty acid profile of eggs from various poultry species, as well as the relationships between them, including fatty acids Ω-6 and Ω-3. The tests were carried out using a Perkin Elmer Clarus 500 chromatograph with a BP x 70 flame ionization detector and column on hen's eggs, quail, guinea fowl, and a pasteurized liquid mixture made from hen's eggs. The results found that quail eggs had the highest fatty acid content (101.485 g FAME / 100 g overall FAME), which was 0.90 percent higher than guinea fowl eggs, 1.48 percent higher than eggs, and 2.04 percent higher than the pasteurized chicken egg mixture. Quail eggs had an SFA/UFA ratio of 0.480, compared to 0.545 for pasteurized mix, 0.551 for chicken eggs, and 0.716 for guinea fowl eggs, and a PUFA/MUFA ratio 0.635 for pasteurized mix, 0.679 quail eggs, 0.730 hen eggs, and 0.744 for guinea fowl eggs. The researchers concluded that, in terms of fatty acid content and ratio, quail eggs are a safer alternative to chicken eggs in the human diet.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXIV, Issue 2
Written by Voichița BOTA, Renata Maria SUMĂLAN, Diana Nicoleta RABA, Monica NEGREA, Mariana-Atena POIANA, Diana OBISTIOIU, Ileana COCAN, Antoanela COZMA, Carmen Daniela PETCU, Ersilia ALEXA

The paper aims to study the antifungal and antimycotoxigenic effect of some essential oils (garden thyme, oregano, coriander, dill and fennel) on wheat seeds. In order to test the protective effect associated with treatment with essential oils (EOs), wheat seeds naturally contaminated with deoxynivalenol (DON) were sprayed with different concentrations of EOs, and after 7 days and 14 days the seed contamination index (SCI), fungal genera and DON content were determined. The obtained results showed that the seed contamination index (SCI), after one week of treatment, is higher than control in case of fumigation of wheat seeds with oregano and fennel essential oil and lower than control in case of coriander, thyme and dill essential oils. The predominant fungal species in this phase are: Fusarium, Cladosporium and Rhizopus. Two weeks after treatment, it is observed that the treatment with essential oils provides fungal protection. SCI is maximum in the case of control and the potential to inhibit micellar colonization increases in the order: fennel

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Published in Scientific Papers. Series D. Animal Science, Vol. LXIV, Issue 2
Written by Madalina DAVIDESCU, Bianca MADESCU, Mitica CIORPAC, Lucian DASCALU, Teodor BUGEAC, Andrei MATEI, Ioana POROSNICU, Steofil CREANGA

The present work aims to review the most important aspects regard to genomic characterization of Pinzgau cattle breed. In Romania, this cattle breed is part of the country´s genetic and cultural heritage and faces the impact of bottleneck and the lack of diversity due to a significant decline in population. Natural populations´ genetic structure is influenced by a limited gene flow that occurs when the geographic distances between them increase. In our country, the Food and Agriculture Organization of the United Nations (FAO) maintained the status of ' endangered-maintained ' cattle breed in 2000 considered to be threatened with extinction. This paper wants to highlight the fact that the conservation of this breed is a national priority and also, reviews the most relevant information in the literature on the genetic diversity of this cattle breed.

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

The purpose of this research was to evaluate the growth performance of Oreochromis niloticus reared in a recirculating aquaculture system in case of inclusion in feed of some phytoadditives. The experiment was conducted on 98 days and the biometric measurements were performed at the beginning (I.), at the end (F.), but also at an intermediary moment (INT.-after20 days of the experiment). The experimental variants were: V1-control, V2-1% Rosmarinus officinalis, V3-1% Hippophae rhamnoides and V4-1% Zingiber officinale. At the end of the experiment the best values of IBG (1.95 g/ind.-Int.; 8.50 g/ind.-F.), SGR (1.28%/day-Int.; 0.76%/day-F.), FCR (1.37 g/g-Int.; 1.63 g/g- F.) and PER indicator (1.93 g/g-Int.; 1.61 g/g-F.) were registered in case of variant V3. Also, in same variant, were observed a reduction of the variability of body mass and total length of fish. In the variants in which phytobiotics were administered, were obtained a better condition factor (V1-2.04; V2-2.11; V3-2.07; V4-2.09) at the end of the experiment. In conclusion, the results shows that the administration of sea buckthorn in a long period of time, has the best effect on growth performance of Oreochromis niloticus species.

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

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