RIULS

Repository of Iasi University of Life Sciences, ROMANIA

Welcome to RIULS!

The mission of the University’s institutional repository is to manage, preserve and disseminate, in open access, the academic and institutional output of the university’s academic community. It also aims to promote values and personalities belonging to Romanian agricultural science, by storing digitized versions of rare books and manuscripts from its collections.

The repository is part of the international movement known as open science, which promotes free access to scientific literature. This translates into maximized impact of the work carried out by researchers, contribution to improving access to knowledge, increased visibility of the institution through the works of its authors and improvement of its search engine ranking.

All documents deposited in the repository receive a unique and persistent identifier called a Handle, thus guaranteeing perpetual access to scientific output through permanent links.

RIULS Repository of Iași University of Life Sciences is indexed in Duraspace, OpenDOAR,CORE,Google Scholar,BASE (Bielefeld Academic Search Engine) and ROAR (Registry of Open Access Repositories), global Directories of Open Access Repositories.

Categories in RIULS

Select a category to browse its collections.

Now showing 1 - 3 of 3

Colecții speciale - Ad Gloria Agris / Special Collections-Ad Gloria Agris 142
Cuprinde cărți și publicații periodice rare ale fondatorilor agriculturii și ai învățământului agricol românesc modern, precum și teze de doctorat din domeniul agricol de la început de secol XX.
Publicații ale Bibliotecii - Librum de libris / Publications of the Library - Librum de libris 13
Contains publications created by the Library’s staff: bibliographies, articles, tutorials, etc.
Publicații științifice ale Universității – AgriScriptum / Scientific Publications of the University - AgriScriptum 6649
Contains documents resulting from scientific research produced or edited by the departments, research institutes and study centres of the University: Doctoral Theses, articles published in ISI journals, articles published in the journals edited by the University, patents, scientific projects, etc.

Recent Submissions

listelement.badge.access-status Open Access ,
Optimization of growth technology a juvenile silver carp (Hypophthalmichthys molitrix valenciennes, 1844) during postemryonal stage, through the application of soy milk technology, additional feed
(“Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iaşi, 2018) Eşanu, V.O.; Nistor, Veta; Tenciu, Magdalena; Mocanu, Elena; Popa, M.C.
Soy is one of the best sources of food for fish culture, high protein content, omega-3 fatty acids and unsaturated fat, which support and ensure healthy growth and development, starting from the earliest stages of life. This study evaluated the influence of technology management soy milk on growth performance of juvenile carp during postembryonal development. The results showed that the use of soy milk significantly influenced the quality and quantity of the fish material. Total increase growth and survival was significantly higher in the experimental ponds (B2, B3, B4), as compared to the control pond (B1). Biological material has developed under normal conditions without the development of pathological conditions, technological or human factors that affect the proper conduct of the experiment. Physico-chemical parameters of the water, except for short periods of thermal variation, were placed in the optimal range for the growth of silver carp. The implementation of this feed-and-feed technology for the development of the trophic base, originally and widely applied in Southeast Asia, determines the optimization of fish production in ecological conditions and lower production costs, without adversely modifying the quality of technological water , stimulation of planktonic biomass and superior assimilation of food. In this technology of silver carp larval stage feeding (Hypophthalmichthys molitrix Valenciennes, 1844) did not involve the administration of organic fertilizers, only pre-starter feeds were used, water supply level and flow rate from the pre-emergence basins was used to maintain the quality of the technological water. Growth and survival gains in the experimental ponds (average weight 0.52-0.63-0.74 g / ex, S 60-65-70%), compared to the control pond (average weight 0.25g / ex, S 40%), which shows that the application of supplementary feeding technology to soy milk, ensures a higher growth and survival rate, better assimilation of food, stimulation of planktonic biomass and maintaining optimal quality of physical-chemical parameters of water, which recommends the introduction and application of this wide-scale technology within the framework of the fisheries, with the strict observance of the way of preparing and administering this nutritional supplement.
listelement.badge.access-status Open Access ,
The impact of extensive aquaculture over the quality of the aquatic environment
(“Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iaşi, 2018) Mocanu, Elena; Patriche, N.; Tenciu, Magdalena; Nistor, Veta; Eșanu, V.
The present paper presents the study results regarding the impact of extensive aquaculture on aquatic environment quality. The study was carried out at Cotu Chiului Research and Development Farm. The facility is located in the northern part of Galati county, adjacent to the pier-shore area of the Prut River Dam, in the km 36 protected natural area. The aquatic species ‘structure and age stages of the biological material from Cotu – Chiului farm, is divided as follows: 51% goldfish, 19% catfish, 4% carp at different age stages, 26% plant feeder fish. Different indicators with high levels of pollution potential, such as nitrogen compounds (NO2-, NO3-, NH4+), phosphorus and organic matter, have been monitored to be able to evaluate the physical-chemical changes of the aquatic life environment from Cotu Chiului farm. The study has been carried out on monthly water and soil samples, over the period of one year. The samples were collected from three growth ponds (EC1, EC2, EC3) which have similar morpho-hydrographic characteristics. The study concluded that: - EC1 (December and November) - maximum values of nitrites (0.132±0.016 mg/l) and ammonia (0.142±0.008 mg/l), - EC 2 (July) - maximum concentration of phosphorus (0.07±0.004 mg/l), - EC1 and EC3 (August), EC2 (January) - high values of organic matter accumulations (96.63±0.1 mg/l) and respectively (91.95±0.12 mg/l). The physical-chemical parameters of the soil samples taken have registered the same evolution tendencies as the water characteristics from Cotu Chiului farm.
listelement.badge.access-status Open Access ,
Comparative study on the use of various hormonal preparations (carp pituitary, Nerestin 6a) in the artificial reproduction of Perca fluviatilis
(“Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iaşi, 2018) Barbacariu, C.-A.; Dirvariu, Lenuţa; Burducea, M.; Mihai, C.
The objective of this experiment was to test the use of hormonal preparations, which are commonly used in the artificial reproduction of various fish species, on Perca fluviatilis in order to develop and optimize an artificial reproductive technology under controlled conditions. The hormonal preparations used in the experiment were carp hypophysis and Nerestin 6A, and the biological material consisted of 20 females and 6 males. The females were divided into two lots: (L1) carp hypophysis (4 mg / kg female body weight) and (L2) Nerestin 5A (0.25 ml / kg females body weight). Hormonal stimulation was done by intraperitoneal syringe administration for the carp hypophysis and intramuscular injection for Nerestin 5A, both in two divided doses as follows: 20% of the total dose in the first injection and 80% in the second. Males did not require hormonal stimulation. The average body weight of females was 399.1 ± 9.66 g (L1) and 425.10 ± 25.77 (L2). The average latency time between the first injection and the ovulation time was 121.43 ± 10.87 hours in L1 and 84.71 ± 6.12 hours in the case of L2. The mean value of the relative fecundity index was 209±66.5 x103 eggs/kg in L1 and 273.1±34.5 x103 eggs/kg in L2. The mean value of the absolute fecundity index was 87.2±23.4 x103 eggs/ female in L1 and 109±11.1 x103 eggs /female in L2. The fertility rate had average values of 87.80 ± 2.63 for group L1 and 91.14 ± 2.87 for L2. The survival of females during the experiment was 80% in the L1 group, 90% in the L2 group and 100% in the males. The hatching rate averaged 36% in the first group (L1) and 52% in the second group (L2). Significant statistical differences between the two groups were recorded for the amount of harvested eggs and latency time, these indicators being higher for the L2 group, while insignificant differences were recorded for the other indicators. The results have shown that artificial reproduction is possible under controlled conditions and can be used to develop aquaculture of the species
listelement.badge.access-status Open Access ,
Characteristics of the hematological profile in the meat preparations
(“Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iaşi, 2018) Costăchescu, D.Fl.; Boişteanu, Paul-Corneliu; Lazăr, Roxana
Determination of the hematological profile quail is a necessity because this species is characterized by an intense metabolism. Any nutritional imbalance is reflected on metabolism influencing their health and production. Research has shown that the hemoleucogram is different depending on age and gender. Thus, the red grouts had an increase of 0.77x106 mm3 in quail chicks of one day, reaching 21 days at 1.72 x 106 mm3. In adults, the variation limits were between 4.22 x 106 mm3 in males and 3.31 x 106 mm3 in females. The same evolution occurred in white blood cells, which were 1 day of 10.2 thousand mm3, reaching 21 days at 16.3 thousand mm3. In adults, they were between 24.5 thousand mm3 in males and 26 thousand mm3 in females. Changes related to age and sex also recorded the amount of hemoglobin and hematocrit. Leukocyte values, excluding eosinophils, were 0.8% for the two sexes. Lymphocytes, 26% in males and 25% in females, and neutrophils were 70.8% in males and 70.5% in females. Hematological research has shown that quail blood has a high oxygenation capacity and remarkable lymphocyte character.
listelement.badge.access-status Open Access ,
Research regarding chemical composition of bird’s liver gathered from Ross 308 Hybrid
(“Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iaşi, 2018) Druc Gafencu, Paula-Viorela; Irimia Gavrilescu, Carmen; Spridon, C.; Usturoi, Marius-Giorgi
Due to the fact that determination of chemical components from edible organs gathered from birds slaughtered at different ages didn’t represent a priority of research regarding quality and human consumers’ safety, in the current paper we aimed to realise a study about influence of slaughtering age on quality of liver gathered from a hen hybrid specialised in meat production. Studied material was bird’s liver gathered from Ross 308 hybrid. In this way were established 3 experimental batches, differentiating by the age at which slaughtering was realised (F1= at 35 days; F2= at 40 days; F3= at 42 days). Quality determinations were realised on fresh product and aimed the content in water, dry matter, proteins, fats, ash, non-nitrogenous extractive substances and energetic value. Regarding protein content in analysed liver, batch F1 recorded a mean value higher with 0.03% face to batch F2 and with 0.15% face to batch F3. Regarding fat content, the highest mean value was obtained by batch F3, followed by batch F2 and batch F1; from statistical analysis of fat content was highlighted significant differences between batch F1 vs. batch F3 (P<0.05) and batch F2 vs. batch F3 (P<0.05). Calculus of energetic value presented the highest value at batch F3, higher with 1.95 kcal/100g face to batch F2 and with 1.31 kcal/100g face to batch F1; differences between those 3 batches being without statistical significance (P˃0.05). The obtained results showed that slaughtering age for Ross 308 hybrid didn’t have a significance influence on chemical composition of liver, with exception of fat content which became higher with bird’s aging.