Ivan Vujanac
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View article: Propylthiouracil thyroid manipulation positively affects the metabolic adaptability of primiparous dairy cows to early lactation requirements
Propylthiouracil thyroid manipulation positively affects the metabolic adaptability of primiparous dairy cows to early lactation requirements Open
The study examined effects of thyroid manipulation with propylthiouracil (PTU) on the metabolic adaptability of transitional dairy cows to early lactation. The study included 30 primiparous Holstein-Friesian cows, which were divided into t…
View article: Effects of Brown Seaweed (Ascophyllum nodosum) Supplementation on Enteric Methane Emissions, Metabolic Status and Milk Composition in Peak-Lactating Holstein Cows
Effects of Brown Seaweed (Ascophyllum nodosum) Supplementation on Enteric Methane Emissions, Metabolic Status and Milk Composition in Peak-Lactating Holstein Cows Open
The dairy industry contributes significantly to anthropogenic methane emissions, which have an impact on global warming. This study aimed to investigate the effects of a dietary inclusion of brown seaweed Ascophyllum nodosum on enteric met…
View article: Energy-Related Hormones in Raw and Retail Cow’s Milk and Possible Risk for Consumers
Energy-Related Hormones in Raw and Retail Cow’s Milk and Possible Risk for Consumers Open
The study aimed to determine the concentration of energy-related hormones in cow’s milk and to consider them from a public health perspective. Fourteen Holstein cows were subjected to milk and blood sampling on the following days in lactat…
View article: Chestnut tannin supplementation can improve immune response and kidney function in prepartum dairy cows
Chestnut tannin supplementation can improve immune response and kidney function in prepartum dairy cows Open
Due to their antiketogenic and antioxidant effects, chestnut tannins may offer a viable approach to manage the impaired immune and renal functions in transition cows. This study aimed to investigate the effects of dietary supplementation w…
View article: PATOGENEZA LAMINITISA MLEČNIH KRAVA
PATOGENEZA LAMINITISA MLEČNIH KRAVA Open
Hromost je najraniji ali i najvažniji klinički simptom oboljenja akropodijuma goveda. Prema literaturnim podacima u 90% slučajeva uzrok hromosti je lokalizovan u papcima, a u 10% slučajeva je u drugim anatomskim delovima ekstremiteta. Pato…
View article: PATHOGENESIS OF LAMINITIS IN DAIRY COWS
PATHOGENESIS OF LAMINITIS IN DAIRY COWS Open
The lameness is the earliest but also the most important clinical symptom of the achropodium diseases in cattle. According to literary data, in 90% of cases, the cause of lameness is localized in the hooves, and in 10% of cases it is in ot…
View article: Methane Emission and Metabolic Status in Peak Lactating Dairy Cows and Their Assessment Via Methane Concentration Profile
Methane Emission and Metabolic Status in Peak Lactating Dairy Cows and Their Assessment Via Methane Concentration Profile Open
Ruminant husbandry contributes to global methane (CH 4 ) emissions and beside its negative impact on the environment, enteric CH 4 emissions cause a loss of gross energy intake in cows. The study is aimed to estimate CH 4 emission and meta…
View article: Milk Yield, Hematological and Electrolyte Parameters in Primiparous Dairy Cows After Laparotomic Omentopexy and One-Step Laparoscopic Abomasopexy Treatments of Left Displaced Abomasum
Milk Yield, Hematological and Electrolyte Parameters in Primiparous Dairy Cows After Laparotomic Omentopexy and One-Step Laparoscopic Abomasopexy Treatments of Left Displaced Abomasum Open
This study aimed to evaluate the effects of two different treatment options for the correction of left displaced abomasum (LDA) on milk yield, hematological, electrolyte parameters, lactate and cortisol concentrations in primiparous cows. …
View article: Skeletal Muscle Fatty Acid Metabolism is Diverted Towards the Synthesis of Signaling Intermediates Without Fatty Acid Uptake Contribution in Dry Cows with Obesity-Related Insulin Resistance
Skeletal Muscle Fatty Acid Metabolism is Diverted Towards the Synthesis of Signaling Intermediates Without Fatty Acid Uptake Contribution in Dry Cows with Obesity-Related Insulin Resistance Open
View article: Metaboličke modifikacije organizma ugojenih krava u periodu zasušenja
Metaboličke modifikacije organizma ugojenih krava u periodu zasušenja Open
Poseban značaj u istraživanjima vezanim za metabolizam viso- komlečnih krava pridaje se ispitivanju uticaja stanja uhranjenosti na metabolički i endokrini status tokom zasušenja, kao pripremnog peri- oda za predstojeću laktaciju. Tokom per…
View article: Protokoli u prevenciji i terapiji respiratornih oboljenјa kod goveda
Protokoli u prevenciji i terapiji respiratornih oboljenјa kod goveda Open
Uprkos velikom napretku veterinarske medicine, unapređenju tehnologije u stočarstvu i dobrobiti životinja, respiratorne bolesti gove- da i dalјe predstavlјaju glavni zdravstveni problem u intenzivnoj proi- zvodnji, a posebno u tovu junadi.…
View article: Environmental influence of chemical contaminants on farm animals and rodents (review research)
Environmental influence of chemical contaminants on farm animals and rodents (review research) Open
The presence of chemical environmental pollutants (heavy metals) and their influence on
\nhealth status of farm animals has been study in long period. We monitored the influence of
\nchemical pollutants on rodents leaving on farms. Heavy m…
View article: Effects of chestnut tannins supplementation of prepartum moderate yielding dairy cows on metabolic health, antioxidant and colostrum indices
Effects of chestnut tannins supplementation of prepartum moderate yielding dairy cows on metabolic health, antioxidant and colostrum indices Open
This study investigated the effects of dietary supplementation with chestnut tannins (CNT) on metabolic and antioxidant status of prepartum cows along with their colostrum quality. Pregnant multiparous Holstein cows were paired according t…
View article: Seroprevalence of Mycoplasma bovis in grazing dairy cows from five different areas in Serbia
Seroprevalence of Mycoplasma bovis in grazing dairy cows from five different areas in Serbia Open
Mycoplasma bovis infection in grazing dairy cows has not been reported in the Republic of Serbia to date. It is important to monitor its seroprevalence on the field. The presence of specific antibodies against M. bovis in the blood serum o…
View article: Preventing ectoparasite infestations reduces glucocorticoid concentrations in the hair of cows – short communication
Preventing ectoparasite infestations reduces glucocorticoid concentrations in the hair of cows – short communication Open
The aim of this study was to compare hair corticosteroid concentrations in ectoparasiticide-treated (n = 10) and non-treated (n = 12) Holstein cows. Animals in the treated group received cyfluthrin three times, on days 0, 28 and 56 of the …
View article: Field Trial on Glucose-Induced Insulin Response in High-Yielding Dairy Cows under Different Environmental Temperatures
Field Trial on Glucose-Induced Insulin Response in High-Yielding Dairy Cows under Different Environmental Temperatures Open
This study aimed to evaluate glucose-induced insulin response in cows exposed to different temperature-humidity index. Twenty early lactating Holstein-Friesian cows were divided into 2 equal groups based on season, as summer (SU) and sprin…
View article: Relationship between the indexes of insulin resistance and metabolic status in dairy cows during early lactation
Relationship between the indexes of insulin resistance and metabolic status in dairy cows during early lactation Open
Insulin resistance is a phenomenon which accompanies the ongoing metabolic adaptation in cows during early lactation. The aim of our study was to determine the linear correlations of HOMA (Homeostatic Model Assessment), QUICKI (Quantitativ…
View article: Placental Iodothyronine Deiodinases Expression in Pregnant Cows Exposed to Propylthiouracil (Ptu) and Thyroid Axis Activity of their Calves
Placental Iodothyronine Deiodinases Expression in Pregnant Cows Exposed to Propylthiouracil (Ptu) and Thyroid Axis Activity of their Calves Open
The aim of our study was to investigate if the thyroid axis of newborn calves is affected by prenatal application of propylthyouracil (PTU). The study included 20 late pregnant Holstein cows. One group (n=10) was treated with PTU (4 mg/kg …
View article: Effects of Bentonite on Weight Gain, Feed Consumption, Blood Metabolites and Ruminal Protozoa in Dairy Calves
Effects of Bentonite on Weight Gain, Feed Consumption, Blood Metabolites and Ruminal Protozoa in Dairy Calves Open
In order to ascertain the effects of addition of bentonite as a pelleting medium in the feed mixture for calves, fourteen 30d-old calves were randomly distributed into two equal groups (CON and EXP). From 30 to 120d of age the EXP group wa…
View article: Variability of blood serum biochemical parameters in Karakachan sheep
Variability of blood serum biochemical parameters in Karakachan sheep Open
Karakachan sheep represents an endangered, indigenous sheep breed from Balkan Peninsula. There is relatively little information about the characteristics of this sheep breed in the veterinary scientific literature. The aim of this research…