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. LXV, Issue 2
Written by Teodor GAVRIȘ, Gabriela CORNESCU, Mihaela SĂRĂCILĂ, Tatiana PANAITE, Alexandra OANCEA, Arabela UNTEA, Dumitru DRAGOTOIU

The objective of this study was to examine the effects of dietary inclusion of parsley and inulin, as sources of natural antioxidants in poultry diets, on the enrichment of antioxidant nutrients in the egg yolk and on the susceptibility of the yolk to lipid peroxidation during storage. The experiment was conducted on 47-week-old TETRA SL LL laying hens, reared in high temperature (30°C). Experimental dietary treatments differed from control diet (C) by addition of 2% parsley or 2% inulin. The addition of parsley and inulin in laying hens’ diets significantly decreased the iron content in the yolk eggs and increase the total polyphenol content, vitamin E, lutein and zeaxanthin and concentrations in the egg yolks. In regards to the oxidative stability parameters, a significant decrease in the concentrations of primary oxidation products formed in the egg yolk of experimental groups was seen, proving an efficient inhibition effect of the phytoadditives on peroxyl radical formation. A significant correlation was observed between oxidation products and total polyphenol content of the egg yolks, where lutein and zeaxanthin inhibit the formation oxidation products.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXV, Issue 2
Written by Diana MOISA (DANILOV), Lorena DEDIU, Valentina COATU, Nicoleta DAMIR

Pharmaceutically active compounds (PhACs) occurred in aquatic environments and have the potential to adversely affect the homeostasis of the endocrine axis leading to immunological, developmental, neurological and reproductive disarray at the organism level. These compounds are frequently discharged or run-off into the water stream and consequently is an increasing concern in research for the threat posed by PhACs on aquatic fauna. Fishes are vulnerable to different compounds, but the effects depend on specie, toxic concentration and exposure time. The concentrations of PhACs detected in the aquatic environment are relatively low but depending on the compound, they can reach up to a few hundreds of ng/g. The detection of pharmaceuticals in the aquatic environment has predominantly been reported in the developed world (USA, EU, Japan, and Australia) which are dominant countries in global pharmaceutical sales, but their presence tends to become ubiquitous. The aim of this paper is to highlight the main adverse effects of most common PhACs found in Danube river on fish health in order to assess the PhAC with the higher risk for fishes.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXV, Issue 2
Written by Marinela ENCULESCU

This study evaluated the influence of inactive dry yeast in diets of dairy cows on productivity, blood-urine parameters, and faecal score. The research was carried out on a number of 30 Romanian Black and Spotted lactating dairy cows, with 583±16.99 kg live weight, divided into three groups (n=10), two experimental E1 and E2 groups, and one control group (C). The experimental group E1 received 120g inactive dry yeast/head/day, while the experimental group E2 received 150g inactive dry yeast/head/day during a 28 days trial. Dietary treatment effects were determined using analysis of variance (ANOVA) for repeated measures (mixed model). Supplementation of the diet with inactive dry yeast generated an increase of milk yield (P<0.10) for the E1 and the E2 groups, compared with the C group. For the milk lactose percentage, a treatment influence (P<0.05) and period influence (P<0.10) between the studied groups were observed. Also, for some blood indicators, a dietary treatment influence was recorded. There were no significant effects of the treatments on the other studied parameters. Dry yeast addition in dairy cows diets can have a positive effect on milk yield performance.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXV, Issue 2
Written by Daniela Mihaela GRIGORE, Elena IRIMIA, Ioana NICOLAE, Dinu GAVOJDIAN

The aim of the current study was to evaluate the effects of multi-strain probiotic administration on dairy and crossbreed calves’ growth performances and health status. The calves were homogeneously assigned into four groups, as follows: dairy experimental (Ed, n=12), dairy control (Cd, n=12), crossbreed experimental (Ec, n=6) and crossbreed control (Cc, n=6). All calves were managed identically, being housed individually, with the experimental groups receiving 2 ml of multi-strain probiotic (Enterococcus faecium and Lactobacillus plantarum) per day. Blood sampling and growth performance were assessed at 1st, 14th and 28th days of the trial. Probiotic supplementation had no significant effects on hematologic profile (P>0.05). However, serum blood glucose and total cholesterol were significantly lowered (P<0.05) in the probiotic treated groups. Multistrain probiotic administration had significant effects on calves (P<0.05), improving the weight gain of both dairy and crossbreed groups (Ed and Ec) compared with control groups (Cd and C2), at the end of the trial. Current results suggest that multi-strain probiotics support calves early-stage development.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXV, Issue 2
Written by Maria Desimira STROE, Mirela CREȚU, Daniela Cristina IBĂNESCU, Sorin Ștefan STANCIU, Neculai PATRICHE

The purpose of this study was to determine the relationships between total length and weight (L - W), to estimate the growth parameters (von Bertalanffy) L∞, k, and the mortality rates (Z, M, F) for the common carp (Cyprinus carpio, Linneaus, 1758) and Prussian carp (Carassius gibelio, Bloch, 1782). Sampling was carried out monthly, from March to September 2021. The relationship between length - weight (L - W) in the study period for common carp was W=0.0574×Lt2.6437, respectively W=0.0391× Lt2.7831 for Prussian carp. The growth parameters for common carp were L∞=86.10 cm and K = 0.87 per year, respectively L∞= 40.95 cm and K 0.67 per year, for Prussian carp. The total (Z), natural (M) and fishing (F) mortality rates were 1.47, 0.82 and 0.65 per year, for common carp, respectively Z=1.65, M=0.85 and F=0.80 for Prussian carp. Regarding the exploitation rate (E) this was 0.44 for the common carp population, respectively 0.48 for Prussian carp, suggesting that both fish population were not in over-exploited condition.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXV, Issue 2
Written by Nikolai SICHKAR, Viktor LYASHENKO, Inna KAESHOVA, Alla GUBINA, Maria NECHAEVA

Currently, the presence of toxins in the composition of all feed for cattle is recorded as a result of a violation of the technology of harvesting and storing feed. The most famous are aflatoxins, ochratoxins, zearalenone, T2 toxin, deoxynivalenol (DON), fumonisin, which, getting into the blood of an animal, quite negatively affect the body of cows, reducing their productivity and fertilizing ability. Of particular importance is the determination of toxins in feed when feeding highly productive livestock under conditions of intensive milk production technology. The purpose of the work is to establish the degree of influence of different dosages of feed sorbents on the productive and reproductive qualities of cows. The studies were carried out in the conditions of the breeding reproducer of the black-and-white breed LLC Barmino in the Nizhny Novgorod region. The objects of research were cows of the first lactation of the Black-and-White breed, but the subject of research was the milk productivity of animals and the efficiency of insemination of cows. It was found that milk productivity and higher rates of reproductive abilities were the best in cows of the third experienced groups that received the largest amount of feed sorbent - 2 kg per ton of concentrated feed.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXV, Issue 2
Written by Viktor KHALAK, Anna HORCHANOK, Lyudmila LYTVYSCHENKO, Oksana KUZMENKO, Natalia KORBYCH, Alexander BORDUN, Vladimir LISKOVICH, Ruslana UMANETS

The paper presents the results of the study on fattening and meat qualities of young pigs of different intrabreed differentiation by origin and breeding value. The research was conducted on farms and processing enterprises of Dnipropetrovsk region, as well as in the Laboratory of Animal Husbandry of the State Institution "Institute of Grain Crops of NAAS of Ukraine". It was established that Large White young pigs from the controlled population at the age of achievement of live weight in 100 kg, at the fatback thickness at the level of 6-7 thoracic vertebrae and at the length of the chilled carcass exceed the minimum requirements of the elite class by 13.85% in average. Significant differences between animals of English and Hungarian origin were established in the average daily gain of live weight (2.28%) and the age of achievement of live weight in 100 kg (3.58%). Young pigs from group I (intrabreed differentiation by selection index "И") and from group II (intrabreed differentiation by Sazer-Fredin index) exceeded peers from opposite groups in the average daily gain in live weight by 7.48-2.75%; in the age of achievement of live weight in 100 kg by 3.87-3.41%. The difference between the groups in the fatback thickness at the level of 6-7 thoracic vertebrae, in the length of the chilled carcass and in the length of the bacon side of the chilled carcass varied from 0.51 to 12.16%. The maximum increase in additional products was obtained from the sale of one head of Large White young pigs of English origin (+1.86%), animals from group I of intrabreed differentiation by selection index "И" (+3.39%) and animals from group II of intrabreed differentiation by index Sazer-Fredin (+2.11%). Based on the obtained data, it was established that the criterion for selection of highly productive animals is the value of the selection index "И" +0.181 - +3.205, Sazer-Fredin index -1.017 - -0.102.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXV, Issue 2
Written by Saïd EL MADIDI, Houda EL KHEYYAT

The main objectives of this study were to estimate the heritability and genetic advance for growth traits in the Argan grove of Agadir in Morocco goat. Traits included, birth weight (BW), 10 days weight (W10), 30 days weight (W30) and at 70 days weight (W70), average daily gain from birth to 30 days (ADG1) and average daily gain from 30 days to 70 days (ADG2). The measurements concern 81 parent-offspring pair distributed in two generations G1 (maternal parent) and G2 (offspring). Genetic parameters are estimated using the parent-offspring regression method after adjusting data for significant non genetic factors. In G2, the birth weights (BW), 10 days (W10), 30 days (W30) and at 70 days (W70) are respectively 1.75 ± 0.23 kg, 2.42 ± 0.24 kg, 3.57 ± 0.27 kg and 5.54 ± 0.46 kg. The average daily gains (ADG1: 0-30 d) and (ADG2: 30-70 d) are 62.38 ± 5.38 g and 50.34 ± 10.62 g respectively. The heritability and genetic advance estimates of different growth traits under study were found moderate in magnitude. Genetic correlations between body weight traits ranged from 0.18 to 0.77, whereas phenotypic correlations ranged from 0.13 to 0.52. these estimates suggest that there is no genetic contradiction between these traits and their assigned genes which were responsible for phenotypic expression. The exploitation of this variability could be used for the selection of better performing goats kids adapted to local breeding conditions.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXV, Issue 2
Written by Cristian RÎMNICEANU, Mirela CREȚU, Marian Tiberiu COADĂ, Angelica DOCAN, Lorena DEDIU

Growth performance and survival rates of backcrossed hybrids of bester females × beluga males were assessed after 28 days of rearing. Hybrid larvae were obtained in the conditions of the reproduction station from the Horia branch of Danube Research Consulting SRL. Three experimental groups were created, corresponding to three classes of sizes: V1- the initial weight of 3.2-5.2 g, V2-initial weight of 1.4-2.5 g, and V3- the initial weight of 0.7-1.4 g. To minimize the effects induced by the increase of the degree of heterogeneity among the fish, after 20 days the fish biomass was divided into two classes of sizes: VA: 25.8 - 32.8 g, respectively VB: 7.3 - 16.8 g. The obtained results showed better values of the individual weight gain in V1 compared to V2 and V3, while at the second stage of the experimental period, the values of the individual growth gain for each of the two experimental variants (VA, VB) were almost similar. Due to the high growth performance, as well as the good survival rate obtained in the two stages of the hybrid rearing, the crossing of these two species can be recommended for commercial fish producers for maximum yield and higher profit.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXV, Issue 2
Written by Daniela Cristina IBĂNESCU, Lorena DEDIU

The main aim of the paper is to investigate the condition of the population of this fish species in a sector of the Romanian Danube River. The common bream is an important species in commercial catches, therefore the knowledge of its growth parameters is important for management of the multi - species fishery. The study is based on a sample of 1580 specimens caught with a total biomass of 197.66 kg. The study took place between 2018 and 2019. Our objective was to estimate the growth parameters (von Bertalanffy) L∞, k, t and the mortality rates (Z, M, F) for the bream population (Abramis brama, Linnaeus, 1758) in the Danube. The relationship between length - weight (L-W) in the study period for common bream population is ? = 0.0201 ∗ ?t2,9212. Von Bertalanffy growth parameters were found as, asymptotic length Lꚙ= 49.35 cm, growth coefficient (K) = 0.37 yr-1. The estimated values of the mortality rates for the studied population are: total mortality (Z) is 1. 51, the natural (M) reaches 0.55. and fishing mortality (F) is .0.96.

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

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