Daniel Biro

Daniel Biro
Slovak University of Agriculture in Nitra - Slovenska posnohospodarska univerzita v Nitre ·  Department of Animal Nutrition (KVZ)

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77
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Publications

Publications (77)
Article
In our study the presence of bacteria, yeast, and microscopic fungi was evaluated. Three forms of corn silage were made including silage without additive, silage with microbial additive (lactic acid bacteria), and silage with nutritional additive (urea). Silage additives were applied to the matter within the recommended dosage, then the matter was...
Article
Along the increasing number of live born piglets in a litter, which reduce the newborn live weight, plays the colostrum nutritional quality an essential role to the survival of newborn piglets. Concentration of colostrum nutrients is affected with several factors from which the time from the start of parturition has the greatest impact. On the seco...
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The aim of this study was to find the effect of dried grape pomace (GP) feeding on the nutrients digestibility coefficients and biochemical parameters of sheep blood serum. The experiment was divided into three feeding periods—C (control), GP1 (1% grape pomace concentration), and GP2 (2% grape pomace concentration). Wethers in three groups in balan...
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The utilisation of different by-products from the food industry as nutrient sources for farm animals is both possible and beneficial. Grape pomace is a by-product that contains polyphenols and fatty acids, both of which have the potential to improve the nutritional quality of cow colostrum. This study aimed to explore how the addition of grape poma...
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Coconut oil has a high content of lauric acid, which has selective antibacterial activity. This study aimed to explore the effect of coconut oil ingestion on the gastrointestinal microbiomes of pigs. A 14-day-long feeding experiment included 19 pigs in two groups (9 on a normal diet and 10 on a diet supplemented with coconut oil). At the start and...
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The objective of the present study was to determine the fatty acid profile of grape pomace, grape stem and grape bunch of three different cultivars of Vitis vinifera sp. (Green Veltliner, Pinot Blanc and Zweigelt) from two countries as a possible sources for animal nutrition. Fatty acid profile analysis was performed using the Agilent 6890 A GC mac...
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Twelve adult Slovak warmblood sport horses were used to study the effect of dried grape pomace (DGP) on health through blood serum biochemical indicators, and on apparent total tract digestibility of dry matter (DM), organic matter (OM), crude protein (CP), acid detergent fibre (ADF) and neutral detergent fibre (NDF). The digestibility analysis was...
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Current experiments with farm animals showed that it is possible to use grape by-products as a source of nutrients in animal nutrition. In the present experiment, we hypothesize that one reason for the variation among feeding trials, besides production steps affecting byproduct quality in winery, the variation among cultivars may have substantial c...
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The aim of this study was to determine nutrients content of 4 oilseeds (sunflower, soybean, flaxseed and rapessed) and fatty acid profile of oils obtained from the seeds. Dry matter (DM), crude protein (CP), nitrogen free extract (NFE) and fat content of the seeds were determined by standard laboratory methods and procedures. Significant (P
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Nowadays, several experiment shown, that grape pomace have potential as a feed in animal nutrition and could be good source of nutrient with beneficial antioxidant activity. Thus, the aim of the research was to compare nutritional value of Pinot Blanc (Vitis vinifera sp.) pomace from two different localities of Slovakia (Vinohrady nad Váhom and Opo...
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The aim of this study was to determine the dry matter (DM) and crude ash content, as well as the mineral content of oilseeds and their by-products, cakes. Four samples of oilseeds (sunflower, soybean, flaxseed and rapessed) were analysed as seeds and cakes. Analyzed crops were grown at the University Experimental Farm in Kolíňany. Cakes were obtain...
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The aim of the this study was to determine the fatty acid profile, fat content and gross energy of meat of wild boar (Sus scrofa) hunted in hunting organization PZ Hôrka Rohožník, southwest region of Slovakia. Samples of musculus semimembranosus were collected immediately after hunting and gutting. A total Samples were organize according to age cat...
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The aim of this study was to analyse the effect of change of feeding realised by beginning of grazing on composition of goat milk at ecological farm RD Pod Skalkou, Tvrdošín from middle April to end of June in 150 goats in different parities. For indoor feeding meadow hay (ad libitum) with grain feed and protein concentrate was used. Outdoor feedin...
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Aim of this study was to analyse the effect of beginning of grazing on fatty acids (FA) profile of goat’s milk. In all milk samples profile of basic FA was determined. Proportion of “goaty flavour” fatty acids: C6:0, C8:0 and C10:0 in milk fat was the lowest (P<0.01) when goats were fed only indoors and was the highest when goats were 7 days on pas...
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The aim of this study was to determine the nutritive value and fermentation parameters of silage made from hybrid Rumex patientia L. × Rumex tianschanicus A.Los (Rumex OK 2). Silages were made in months September, October and November of the year 2017 and next in April and May of the year 2018. In each month two variants were analysed, one without...
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Aim of this study was to determine the gross energy concentration of fresh, wilted and ensiled Rumex OK 2 (Rumex patientia L. × Rumex tianschanicus A.Los.) from spring months and June. Samples were collected in spring months and June of the year 2018. The plant of Rumex OK 2 consist in March mainly from rosette of leaves and the stalk is not higher...
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The main goal of this study was to evaluate the health condition of dairy cows in relationship to milk production and milk composition using continuous monitoring boluses. In total, seven Holstein cows had boluses implemented for monitoring rumen pH and temperature every 15 min with an accuracy of ± 0.1 pH/ °C. Milk production test day records were...
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The aim of the experiment was to determine the influence of the addition of Lactobacillus plantarum and Lactobacillus brevis on the quality of the fermentation process of silage from the permanent grassland after 12 months of storage in silage bags. In the phytomas of the permanent grassland the proportion of grass was 86% (with the prevalence of A...
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Aim of this experiment was to determine the gross energy concentration of fresh, wilted and ensiled hybrid of Rumex patientia L. x Rumex tianschanicus A. Los. (Rumex OK 2). Samples were collected in autumn months of the year 2017. The plant of Rumex OK 2 consist during autumn months only from rosette of leaves. The height of leaves was in autumn mo...
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The aim of this study was to determine the protein quality of sow’s colostrum. For this purpose, the essential amino acid index (EAAI) of sow’s colostrum was calculated. The study was carried out on 12 Large white sows, which were on the 2.9 farrowing on average. Colostrum samples were collected by milking per hand without application of oxytocin....
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The aim of the study was to analyse the fatty acid profile of wild boar (Sus scrofa) meat. The samples were obtained from the mountain Tríbeč (southwest part of the Slovak Republic). A total of 36 samples in 3 age categories of meat were analysed. The effect of age on the intramuscular (IMF) fat content was analysed. The highest (P < 0.05) IMF cont...
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The aim of this research was to determine the fatty acid content in maize silages of different hybrids. Grain hybrid with FAO number 420 and silage hybrid with stay-green maturation with FAO number 450 were evaluated. Maize hybrids were grown under the same agro-ecological conditions, and harvested on growing degree days 1277 (FAO 420) and 1297 (FA...
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The concentration and proportion of essential amino acids in sow’s colostrum changes every hour from the start of colostrum secretion. One of the parameters describing the protein quality of sow’s colostrum is the chemical score. The aim of this study was to determine the chemical score of colostrum of sows. Colostrum samples were collected every h...
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The aim of this study was to determined nutritive value of five hybrids varying in maturity sown to plots of experimental site located in southern Slovakia. Nutrient contents and digestibility parameters were obtained from samples of herbage or silages to estimate net energy of lactation (NEL) contents and milk yield (MY) potential based on in vivo...
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The aim of study was to analyse the dietary effect of pumpkin and flaxseed oils on quality and mineral composition of laying hens eggshell. At 38 weeks of age, Lohmann Brown Lite hens were housed in three-floor cages, divided into three dietary groups (C-control, E1-pumpkin oil (3 %), E2-flaxseed oil (3 %)). There were housed six hens in one cage....
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The aim of this study was to continuously monitored drinking regime of 7 dairy cows of Holstein breed using boluses during 24 weeks of lactation in relation to the outside temperature and observed daily drinking regime with the impact of drinking on rumen temperature at University Experimental Farm in Oponice. Animals were fed once daily and milked...
Article
The impact of treatment with mGnRHa, mGnRHa with metoclopramide, and metoclopramide on secretion of luteinizing hormone (LH), testosterone (T) and 11-ketotestosterone (11-KT) and on milt and spermatozoon characteristics was studied in male tench Tinca tinca. Male tench were divided into four groups and treated with following preparations: 0.9% NaCl...
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The aim of the study was to find the effect of daily diet change from the start of lactation diet (SL) to the peak of lactation diet (PL) taking account into the lactation number (2nd lactation – groups S2L, P2L; 3rd lactation – groups S3L, P3L) using continuous monitoring of ruminal pH using e-bolus at school experimental farm in Oponice. Animals...
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The aim of study was to analyze the dietary effect of pumpkin and flaxseed oils on mineral composition of egg mass and blood parameters of laying hens. At 38 weeks of age, Lohmann Brown Lite hens were housed in three-floor cages, divided into three dietary groups (C-control, E1-pumpkin oil (3%), E2-flaxseed oil (3%)). There were housed six hens in...
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The aim of the experiment was to analyzed coefficients of digestibility of the maize silage nutrients in horse feeding. Horses of Slovak warmblood breed engaged in the research were 2.5 ± 0.5 years old. Horses in boxes without bedding to avoid eating it and excrement contamination were stabled. Horses individually with ad libitum access to water we...
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The objective of the study was to investigate the effect of 24 hours aerobic exposure on the nutritive value and fermentation parameters of maize silage under operating conditions in autumn. The maize silage was treated with the addition of granulated biological silage additive (Lactobacillus plantarum, Lactobacillus buchneri and Pediococcus pentos...
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The aim of the work was to determined the nutritive and fermentation quality of farm-scale alfalfa silages from West part of Slovakia, analyzed in 2014 in the laboratory of the Department of Animal Nutrition, SUA in Nitra. In alfalfa silages, was found the average dry matter content 372.66 g kg-1, while 30% of samples had lower dry matter content t...
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The goal of this study was to analysed and compared the nutrients content of dry dog foods with nutrient content, which is declared by the manufacturer of the dry dog foods. Fifteen dry dog foods bought in the Slovakia were analysed for dry matter, crude protein, crude fat, crude fiber, nitrogen free extract and ash concentration. Nutrients analysi...
Conference Paper
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The aim of the study was to continuously monitored reticuloruminal pH with e-bolus for 15 weeks of lactation and found the differences in the ruminal pH between cows in the second (n=3) and third lactation (n=4) at school experimental farm in Oponice. Animals were fed once with Total Mix Ratio ad libitum (between 4:00 a.m. and 5:00 a.m. h) and milk...
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The aim of the study was to analyze the effect of a blend of phytogenic additive on nutritional and mineral composition of breast, thigh muscles and liver in fattening turkeys. A total 300 female turkeys were monitored in the trial. 1-day old broad-breasted white turkeys hybrid XL were randomly divided into two groups (150 pcs per each). Turkeys in...
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The aim of this study was to analyse the effects of different daily intakes of rapeseed bee pollen on the growth and biochemical blood serum indicators in male and female rats. A total of 40 clinically healthy male and female Wistar rats were randomly divided into four groups. In the control group (C) rats were fed a standard complete diet; in the...
Article
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The aim of this study was to determine the effect of pumpkin and flaxseed oils on the fatty acid profile and nutrient changes in table eggs. At 38 weeks of age, Lohmann Brown Lite hens were divided into three groups depending up the diet. The birds were housed in individual cages (6 hens per cage) with a space allowance of 943.2 cm² per hen, and gi...
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The aim of this study was to analyze the development of white blood cells in blood of neonatal piglets immediately after birth and colostrum intake. Together 8 newborn piglets (Large white) were included in this study. Piglets were during whole experiment under his mother and the colostrum intake was ad libitum. Blood samples (1.0 mL) were collecte...
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The aim of the study was to determine the effect of a phytogenic additive on blood serum indicator levels and fatty acids profile of breast, leg muscles and liver in fattening turkeys. The experiment was realized in private turkey farm and in the Department of Animal Nutrition, Faculty of Agrobiology and Food Resources, Slovak University of Agricul...
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The aim of the study was to analyze the effect of biological additive on nutrient composition of grass silages. The experiment was realized in practical conditions on the farm RD Klenovec in 2013. Grass mass of permanent grassland was ensiled in silage bags. Laboratory analysis of silage samples were carried out at 8 weeks of fermentation, 6 and 12...
Article
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The aim of the study was to continuously monitor reticuloruminal pH in 7 dairy cows of Holstein breed during 45 days at University Experimental Farm in Oponice. The bolus pH and temperature values implemented via esophagus were measured every 15 minutes (96 data points per day) with accuracy ±0.1 pH. Data were downloaded and collected with HathorHB...
Conference Paper
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Maize silage is an important component of daily diets characteristic by good digestibility, palatability and storage ability. In comparison with alfalfa silage is maize silage poorer on content of minerals. In our study we determined and compared the average content of mineral elements in maize silages from 2011 to 2013. Totally 343 samples were co...
Article
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Colostrum has essential roles in the first hours of the piglets life. It is important for piglets due to its nutrient composition. Composition of colostrum is variable. There are differences between breeds and sows which are caused due to lactation stage, nutrition before parturition, genetics, individuality and many other factors. Colostrum is sou...
Article
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Changes in amino acid profile of alfalfa silage preserved with chemical or biological additives were studied in fresh and wilted silage. The chemical additive was formic acid and the biological additive consisted of Lactobacillus rhamnosus, L. plantarum, L. brevis, L. buchneri and Pediococcus pentosaceus. Second cut alfalfa (Medicago sativa L.) was...
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DOI: 10.15414/afz.2014.17.03.96-99 Received 13. May 2014 ǀ Accepted 11. July 2014 ǀ Available online 27. August 2014 The aim of the study was to analyze the dietary effect of pumpkin and flaxseed oils on performance parameters of laying hens. Lohmann Brown Lite hens were randomly divided to three groups. Total 12 hens (6 per group) were monitored....
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DOI: 10.15414/afz.2014.17.03.93–95 Received 15. May 2014 ǀ Accepted 5. June 2014 ǀ Available online 27. August 2014 The aim of the study was to analyze the effect of Rhus coriaria L. supplementation in total feed mixture on yolk nutrients composition of laying hens Hy-Line Brown. Hens at 20 weeks of age were randomly divided to two groups (10 hens...
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DOI: 10.15414/afz.2014.17.01.24-29 Received 7. February 2014 ǀ Accepted 20. March 2014 ǀ Available online 8. April 2014 We evaluated the effect of locality on nutritive value of maize silage with various FAO number. There were 8 maize silage hybrids (FAO 220, FAO 230, FAO 260, FAO 280, FAO 390, FAO 450, FAO 550) grown in two similar localities. All...
Article
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Aim of this study was to determine the concentration of gross energy in sow's colostrum. Samples of colostrum were taken from 8 sows (White improved), which were at different farrow (1 st to 4 th). Sows were fed with feed mixture for lactating sows. Colostrum samples were taken per hand without injection of oxytocin from different mammary glands an...
Article
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The aim of this study was to determine the effect of early hybrids of maize (Zea mays L.) with different FAO number (220, 230, 260 and 280) harvested in milk-wax maturity stage on nutritive value and parameters of fermentation process of whole plant maize silages. In laboratory conditions we conserved maize hybrids without additives in laboratory s...
Conference Paper
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Key words: sorghum silage, maize silage, fattening of lambs, growth performance, slaughter quality Feeding sorghum silage in fattening lambs diets decreased growth performance but did not worsen the slaughter quality of carcasses compared to corn silage. Among the tested silages corn silage had better nutritional usefulness for lambs than sorghum s...
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The structure of the small intestine of neonatal pigs has an important effect on immunoglobulin absorption. The aim of the experiment was to observe changes in the mucous membrane and the presence of immunoglobulins in the intestines of piglets during the first hours of their postnatal lives. In total, 80 piglets of the Large White breed were divid...
Conference Paper
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The aim of the experiment was the digestibility of macroelements of maize silage for young horses analyze. In the trial 4 young horses were used, Slovak warm-blood bred, average body weight 350+25 kg, and 2.5+0.5 years respectively. Apparent digestibility was analysed. Maize was harvested at the period of the milk-wax corn maturity; average length...
Article
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In this study, the effects of pollen addition in diet on the small intestine structure in rats were investigated. The microscopic changes in the small intestine after administration of the pollen addition were evaluated. The experimental animals were divided into two experimental and one control group of ten rats (5 males and 5 females). Experiment...
Conference Paper
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In this study, the microscopic changes in the small intestine after administration of the pollen addition in rats, were evaluated. The experimental animals were divided into two experimental and one control group of ten rats (5 males and 5 females). Experimental group A was given the addition of pollen in concentration of 0,2 % and group B was fed...
Article
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Phytoadditives are characterized as herbal products to use in nutrition to increase the productivity of animals. At present, the really assumed potential of fecundity is 15.0 piglets born alive, 2.4 litters/year, 10% losses and 32.5 piglets per sow/year. The objective of this study was to examine the effect of phytogenic additive in sows feed ratio...
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Background: Phytoadditives have a positive effect on animal performance. The aim of the study was to determine the effect of plant extract additives on digestibility of nitrogen free extract, crude fi bre, NDF and ADF in sport horse's nutrition. Methods: In the trial we used 14 adult healthy warm blood sport horses (BW: 525±75 kg, age: 6.8±3 years)...
Article
The aim of the study was to determine the effect of a phytogenic additive on blood serum indicator levels and faecal nutrients digestibility. The experiment was realized in Riding Centre of the Department of Animal Husbandry, Faculty of Agrobiology and Food Resources, Slovak University of Agriculture in Nitra. Total 14 warmblood sport horses (geldi...
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The aim of this work was to determine the quality of maize silages from Western Slovak Region analyzed in 2009 and 2010 on the Department of animal nutrition, Faculty of agrobiology and food resources, Slovak university of agriculture in Nitra, Slovakia. Maize silages were evaluated on the base of nutritional value, the result of fermentation proce...
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The aim of the study was to analyze the effect of different intakes of macroelements from feed on the mineral blood profile of sport horses. In the experiment which lasted for 12 months (6 months for each of the two periods), 14 sport horses with 2 types of feed rations were monitored. The blood was collected at the beginning of the experiment and...