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 141
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 6458
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

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The influence of conditions of pre-incubation of eggs on the final results of the incubation process
(“Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iaşi, 2019) Usturoi, Marius-Giorgi; Radu-Rusu, Răzvan-Mihail; Raţu, Roxana-Nicoleta; Usturoi, Alexandru
Preparation of eggs for incubation (pre-incubation) is the operation that gradually moves from storage temperatures to those specific to normal embryonic development, in order to improve the final results of the incubation process and the quality of the chicks obtained. Four batches of eggs (600 eggs/batch) were subjected to artificial incubation, differentiated by temperature, relative humidity and the duration of pre-incubation (batch Lc =+26….+28°C, 60-65%, 12 hours; Lexp-1=+28….+30°C, 65-70%, 10 hours; Lexp-2=+30….+32°C, 70-75%, 8 hours; Lexp-3 = +32….+34°C, 75-80%, 6 hours). The ratio of clear eggs was 4.33-4.67%, resulting in a fertility rate of 95.33-95.67%. The conditions of pre-incubation of the eggs set their mark on the embryonic mortality rate (4.00 7.33%) and of the technological losses (2.67-4.00%), indicators that generated different levels of hatching (88,67% at Lexp-2; 87.33% at Lexp-1; 86.33 at Lexp-2; 84.0 at Lc) and hatchability (93.01% at Lexp-2; 91.29% at Lexp-2 1; 90.56 to Lexp-2; 88.11 to Lc). The conclusion of the study was that the pre-incubation of the eggs for 8 hours at temperatures of +30...+32°C and relative humidity of 70-75%, allows to improve the hatching capacity of the eggs obtained from the parents of the Ross-308 hen hybrid.
listelement.badge.access-status Open Access ,
Nutrigenomics, a new direction for dairy cows: a review
(“Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iaşi, 2019) Mădescu, Bianca-Maria; Matei, A.C.; Ruginosu, Elena; Davidescu, Mădălina-Alexandra; Vintilă, V.; Amarandei, M.; Creangă, Şteofil
A fairly fresh area of studies is nutrigenomics in dairy cows. It is described as the research of nutritional genome-wide factors that alter gene expression. The capacity of nutrients to communicate with genes and modulate molecular processes that impact physiological functions is well recognized nowadays. This has resulted in increasing interest among researchers in exploring nutrition at a molecular level and developing two fields of study: nutrigenomics (evaluates the influence of nutrients on gene expression) and nutrigenetics (evaluates the heterogeneous individual nutrient response due to genetic variation). Due to their biologically significant positions during early postnatal life, fatty acids are one of the nutrients most studied. Fatty acids modulate transcription factors engaged in lipid metabolism regulation. The use of various sources of polyunsaturated fatty acids, starch concentrations, forage ratios and vitamins stands out among the options for dietary manipulation with the aim of modulating lipogenesis. Retinoic acid activates both receptors of retinoic acid (RAR) and receptors of retinoid X (RXR), causing epigenetic modifications in important adipogenesis regulatory genes. We are at the frontier of the nutrigenomics era in ruminants and original information firmly suggest that this science branch can play a critical part in future actions to feed better dairy cattle.
listelement.badge.access-status Open Access ,
Effect of a natural oil blend on intestinal microflora population in layers diet
(“Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iaşi, 2019) Stanel, I.M.; Panaite, Tatiana-Dumitra; Vlaicu, P.Al.; Tabuc, Cristina; Soica, Cristina
The feeding trial was conducted for 4 weeks on 48 Lohmann Brown layers (55 weeks) in order to evaluate the effect of a natural oil blend (OB) on intestinal microflora population. The trial was conducted in experimental halls with controlled microclimate (average temperature/total period 22.41±0.98°C; humidity 66.35±5.68%; ventilation/chick 0.50±0.24%; CO2 level 686.39±104.38 ppm) and 16h/day light regimen. The layers assigned to 2 groups (24 hens/group, 4 hens/cage) received a conventional diet with the same basal formulation (16.80% crude protein; 2760 kcal metabolizable energy). The new formulations diet for the experimental (OB) group differed from the conventional diet C, by replacing the vegetal oil with a OB (0.50%). The compose of the OB was 20% buckthorn oil, 20% sesame oil, 20% rosehip oil, 20% grape oil and 20% walnut oil. At the end of the trial, 6 layers/group were slaughtered and samples of caecal and intestinal contents were collected for bacteriological examination. The colony forming units (CFU) of Escherichia Coli and Staphylococcus spp. in the caecum content in OB group was significantly (P≤0.05) decreased (10.02 and 8.33 CFU) compared with C group (10.09 and 9.12 CFU). Same trend was observed in the intestinal content, Escherichia Coli and Staphylococcus spp. decreased significantly (P≤0.05) in OB group (5.39 CFU Escherichia Coli and 5.24 CFU Staphylococcus spp.) compared with C group (5.41 and 5.25CFU). Lactobacillus spp. the favourable bacteria in the caecum and intestine content, was increased significantly (P≤0.05) in OB group (10.96 and 6.17 CFU) compared with that in C group (10.53 and 6.09 CFU). Salmonella was absent in all cases.
listelement.badge.access-status Open Access ,
Preservation of egg quality using grape pomace cakes as a natural antioxidant in the diets of laying hens enriched in omega 3 fatty acids
(“Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iaşi, 2019) Olteanu, Margareta; Criste, Rodica-Diana; Panaite, Tatiana-Dumitra; Ropota, Mariana; Vlaicu, P.Al.; Turcu, Raluca-Paula; Soica, Cristina; Visinescu, Petruta
For the antioxidant effect evaluation of a winery by-product - the grape pomace cakes, a 4-week trial was conducted on 180 Lohmann Brown laying hens, aged 52 weeks. The layers were assigned to three groups: a control group (C) and two experimental groups (E1 and E2), with 60 hens/ group, housed in standard Zucami type cages (2 hens/cage). Compared to the control formulation, the experimental formulation included 5% flax meal, enriched in polyunsaturated fatty acids and as antioxidants 100 mg vitamin E/kg feed (E1); 2% grape pomace cakes (E2). Forty eggs/group were randomly collected in the end of the trial, 10 eggs/group being stored at +20°C and 10 eggs/group at +4°C, for 14 and 28 days in order to determine their fatty acids content and the quality preservation over time. After 14 days, eggs stored at +4°C has significantly (P <0.05) higher values of the Haugh unit, compared to those from 28 days, with comparable values for both experimental groups and control group. In contrast, the eggs stored at room temperature (+20°C), has lower values of the Haugh unit in both storage periods (14 and 28 days), compared to those stored at +4°C, without significant differences between groups (P>0.05), although experimental groups included flax meal. The results regarding the freshness of the eggs stored in the fridge (+4°C) for 14 days showed a 20% AA eggs in E2 group, while in the other groups were no AA eggs. Only group E2 had 10% eggs, stored at +20°C for 14 days, with grade A freshness, compared to 0% for groups C and E1. The grape pomace cakes had comparable effects with vitamin E on the preservation of egg quality over time, thus it can be affirmed that the grape pomace cake diet is effective in maintaining the quality of eggs enriched in polyunsaturated fatty acids over time.
listelement.badge.access-status Open Access ,
The potential of white lupin seeds (Lupinus albus L.) from low-alkaloid varieties, as a protein alternative source, in the diets of laying hens
(“Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iaşi, 2019) Criste, F.L.; Mierliță, D.; Pop, Mircea-Ioan; Teușdea, A.
This study assesses the effects of using lupine seeds from low-alkaloid varieties, as alternative protein source for laying hens feeding related the bioproduction performances and egg quality. A total number of 160 Tetra-SL LL commercial layers of 30 weeks of age were distributed in a randomized complete block design, of 4 treatments and 5 replicates of 8 layers per replica (n = 40 layers/treatment). Treatments consisted of 4 input levels (0, 15, 20 and 25% -% of the combined fodder composition) of white lupine seeds (cv. Amiga) for laying hens feeding. The results achieved suggest that white lupine modern varieties seeds can be included into laying hens’ diet in a ratio up to 20% of the combined fodder composition, as an efficient substitute for soybean meal proteins, without affecting the egg intensity and the quality of the eggs, the feed intake, feeding efficiency, it can decrease feed costs related to egg yield up to 4.2%. The input of lupine in laying hens feeding in a ratio up to 25% significantly reduces laying intensity, egg weight, egg shell mineral thickness and weight, and increases feed conversion ratio.