TY - JOUR AU - Jurkovich, Viktor AU - Bakony, Mikolt AU - Reiczigel, Jenő TI - A retrospective study of thermal events on the mortality rate of hutch-reared dairy calves JF - FRONTIERS IN VETERINARY SCIENCE J2 - FRONT VET SCI VL - 11 PY - 2024 PG - 7 SN - 2297-1769 DO - 10.3389/fvets.2024.1366254 UR - https://m2.mtmt.hu/api/publication/34749089 ID - 34749089 LA - English DB - MTMT ER - TY - JOUR AU - Várhidi, Zsóka AU - Csikó, György AU - Bajcsy, Árpád Csaba AU - Jurkovich, Viktor TI - Uterine Disease in Dairy Cows: A Comprehensive Review Highlighting New Research Areas JF - VETERINARY SCIENCES J2 - VET SCI VL - 11 PY - 2024 IS - 2 SN - 2306-7381 DO - 10.3390/vetsci11020066 UR - https://m2.mtmt.hu/api/publication/34557483 ID - 34557483 AB - Uterine disease is an intensely studied part of dairy cattle health management as it heavily affects many commercial dairy farms and has serious economic consequences. Forms of the disease, pathophysiology, pathogens involved and the effects of uterine disease on the health and performance of cows have already been well described by various authors. Lately, researchers’ attention has shifted towards the healthy microbiome of the uterus and the vagina to put emphasis on prevention rather than treatment. This aligns with the growing demand to reduce the use of antibiotics or—whenever possible—replace them with alternative treatment options in farm animal medicine. This review provides a comprehensive summary of the last 20 years of uterine disease research and highlights promising new areas for future studies. LA - English DB - MTMT ER - TY - JOUR AU - Bognár, Barbara AU - Khol, Johannes Lorenz AU - Baumgartner, Walter AU - Fornyos, Kinga AU - Papp, Melitta AU - Abonyi-Tóth, Zsolt AU - Bakony, Mikolt AU - Jurkovich, Viktor TI - Investigating the Prevalence of Paratuberculosis in Hungarian Large-Scale Dairy Herds and the Success of Control Measures over Four Years JF - ANIMALS J2 - ANIMALS-BASEL VL - 14 PY - 2024 IS - 1 PG - 11 SN - 2076-2615 DO - 10.3390/ani14010151 UR - https://m2.mtmt.hu/api/publication/34483289 ID - 34483289 N1 - A szerzők egyike piaci szereplő. AB - Paratuberculosis (PTB) is a severe, slow-developing, untreatable disease of ruminants. Worldwide, the disease affects more than 50% of herds in the dairy industry, and causes substantial economic losses for dairy producers. Diagnostic tests show limited sensitivity, especially in the early stages of the disease. Our study aimed to investigate the seroprevalence of Mycobacterium avium ssp. paratuberculosis (MAP) in large-scale dairy herds in Hungary, in association with the self-reported presence or absence of screening and intervention measures against MAP transmission. We processed data from 42 large-scale Holstein Friesian farms in Hungary between 1 January 2018 and 31 December 2021. An average of 32,009 (min.: 31,702; max.: 32,207) animals were blood sampled yearly (127,372 in total during the four years), corresponding to 15% of the Hungarian dairy cattle population. All female cattle older than 2 years were blood sampled on the farms enroled in the study. The samples were tested using a commercial ELISA (IDEXX paratuberculosis screening Ab test). Farm managers were interviewed about their on-farm diagnostic and intervention approaches using a uniform questionnaire, including questions on the level of awareness, frequency of ELISA and PCR testing, and their strategies for culling adult animals and reducing transmission to newborn calves. By comparing the annual rate of change in seroprevalence and the amount of change observed during the four-year period, we concluded that test-and-cull strategies implemented in parallel with newborn calf management that aimed at preventing MAP transmission were superior to test-and-cull strategies alone; moreover, fortifying culling decision making via additional ELISA and PCR tests is superior to using a single ELISA result. For farms that carried out a complex program with both “test-and-cull” and proper newborn calf management, there was a proportional reduction in apparent seroprevalence at an average of 22.8% per year. Fifteen of the sampled farms had no measures in place to control paratuberculosis. On these farms, the seroprevalence increased by 12.1% per year on average. LA - English DB - MTMT ER - TY - CONF AU - Bognár, Barbara AU - Melitta, Papp AU - Jurkovich, Viktor TI - The estimation of 4-year seroprevalence changes of paratuberculosis and evaluating the effectiveness of eradication programs in large-scale Hungarian dairy herds T2 - European Buiatrics Congress and ECBHM Jubilee Symposium Abstract book PB - Verlag der DVG Service GmbH PY - 2023 SP - 375 EP - 376 PG - 2 UR - https://m2.mtmt.hu/api/publication/34133182 ID - 34133182 LA - English DB - MTMT ER - TY - CONF AU - Várhidi, Zsóka AU - Csikó, György AU - Palócz, Orsolya AU - Sátorhelyi, Péter AU - Erdélyi, Balázs AU - Jurkovich, Viktor TI - Determination and antibiotic susceptibility testing of normal vaginal bacterial flora of dairy cows T2 - European Buiatrics Congress and ECBHM Jubilee Symposium Abstract book PB - Verlag der DVG Service GmbH PY - 2023 SP - 346 EP - 348 PG - 3 UR - https://m2.mtmt.hu/api/publication/34133181 ID - 34133181 LA - English DB - MTMT ER - TY - CONF AU - Jurkovich, Viktor AU - Bakony, Mikolt AU - Per, Theilgaard AU - Kovács, Levente TI - The effects of a phosphate binding feed supplement fed prepartum on the phosphate and calcium balance in dairy cows T2 - European Buiatrics Congress and ECBHM Jubilee Symposium Abstract book PB - Verlag der DVG Service GmbH PY - 2023 SP - 141 EP - 142 PG - 2 UR - https://m2.mtmt.hu/api/publication/34133179 ID - 34133179 LA - English DB - MTMT ER - TY - CONF AU - Fébel, Hedvig AU - Joan, Edwards AU - Pajor, Ferenc AU - Jurkovich, Viktor AU - Bakony, Mikolt AU - Kovács, Levente TI - Effect of prepartum magnesium butyrate supplementation on rumination time, milk yield and composition, and blood parameters in dairy cows T2 - European Buiatrics Congress and ECBHM Jubilee Symposium Abstract book PB - Verlag der DVG Service GmbH PY - 2023 SP - 137 EP - 138 PG - 2 UR - https://m2.mtmt.hu/api/publication/34133176 ID - 34133176 LA - English DB - MTMT ER - TY - JOUR AU - Bakony, Mikolt AU - Kovács, Levente AU - Kézér, Fruzsina Luca AU - Jurkovich, Viktor TI - The use of body surface temperatures in assessing thermal status of hutch-reared dairy calves in shaded and unshaded conditions JF - FRONTIERS IN VETERINARY SCIENCE J2 - FRONT VET SCI VL - 10 PY - 2023 SN - 2297-1769 DO - 10.3389/fvets.2023.1162708 UR - https://m2.mtmt.hu/api/publication/34056428 ID - 34056428 AB - The study was carried out in a Hungarian large-scale dairy farm during a 5-day period in hot August weather. Altogether 16 preweaning calves were chosen for the study. An agricultural mesh with 80% shielding was stretched over eight calf cages at 2 m from the ground to shield the cages in their entirety, while eight others were left unshaded. Ambient temperature and relative humidity were measured in 10 min intervals inside and outside one of the hutches in the shaded and unshaded groups during the total length of the study. The rectal temperature of the calves was measured by a digital thermometer every 4 h. Surface temperatures were measured on body parts, in the same intervals as rectal temperature with an infrared thermometer. Measuring sites included: the leg (metacarpus), muzzle, eye bulb, scapula, and ear. Statistical analyses were performed to assess the effects of shading on environmental and body temperatures and to also assess the strength of the association between core, skin and ambient temperatures; to estimate the temperature gradient between body shell and core; to compare the changes in heat dissipation capacity of the different body regions (as represented by temperatures of various sites) with increasing ambient temperature controlling for shaded or unshaded conditions; and to predict the risk of hyperthermia (rectal temperature not lower than 39.5°C) with the CART classification method. The average rectal temperatures suggest that the temperature conditions both in shaded and unshaded groups imposed a severe heat load on the calves. The temperature of the body shell, as represented by skin temperatures, shows a much more significant variation, similar to ambient temperature. As expected, areas that are closer to the core of the body (ear and eye) show less difference from rectal temperature and show a narrower range (lower variance), as more distal regions (leg, scapula) have a wider range. Body surface temperatures are more related to ambient temperature in calves than rectal temperature. The predictive value of infrared body surface temperatures for predicting heat stress or rectal temperature is low. LA - English DB - MTMT ER - TY - JOUR AU - Bodrogi, Lilla AU - Horváth, Borbála Blanka AU - Jurkovich, Viktor AU - Kiss, Gerda Zsuzsanna AU - Bagi, Zoltán AU - Bakony, Mikolt AU - Kusza, Szilvia TI - Effect of ad libitum feeding of Holstein Friesian calves on immunological parameters and molecular stress on a transcriptional level JF - SAUDI JOURNAL OF BIOLOGICAL SCIENCES J2 - SAUDI J BIOL SCI VL - 30 PY - 2023 IS - 7 PG - 6 SN - 1319-562X DO - 10.1016/j.sjbs.2023.103701 UR - https://m2.mtmt.hu/api/publication/33992359 ID - 33992359 AB - Our aim was to compare the health and performance of ad libitum (ADLIB) and restrictedly fed Holstein Friesian heifer calves. Calves were selected to ADLIB (n=13) and control (n=13) groups randomly. The period of ADLIB feeding lasted for 3 weeks after colostrum supplementation. The calves in the control group received the same milk replacer, which was supplied according to the restrained feeding schedule of the farm. There was no difference between the two groups in weight, weight gain or movement activity, furthermore in the values of glucose, albumin, total protein, BHB, AST, oxidant and antioxidant status incl. dROM, PAT and OSI. The IL8 gene had higher levels (non significant, p>0.05) of expression in the ADLIB group during the first 20 days of life, which indicates that ADLIB feeding might potentiate a stronger immune response to environmental stress. The IGF1 gene showed increased expression in the ADLIB fed group at almost all time points, however the difference was already detected on the first day of the study, indicating the importance of individual differences even within the same breed. During the first 10 days INS expression was higher in the restricted group, followed by a shift by day 20 and after, when the ADLIB group showed a higher relative expression level. The observed values describe a trend that, although not significant (p>0.05), would seem to indicate that ADLIB feeding might potentiate a stronger immune response to environmental stress. LA - English DB - MTMT ER - TY - JOUR AU - Fébel, Hedvig AU - Edwards, Joan AU - Pajor, Ferenc AU - Jurkovich, Viktor AU - Bakony, Mikolt AU - Kovács, Levente TI - Effect of Prepartum Magnesium Butyrate Supplementation on Rumination Time, Milk Yield and Composition, and Blood Parameters in Dairy Cows JF - VETERINARY SCIENCES J2 - VET SCI VL - 10 PY - 2023 IS - 4 PG - 16 SN - 2306-7381 DO - 10.3390/vetsci10040276 UR - https://m2.mtmt.hu/api/publication/33751260 ID - 33751260 AB - Background: Magnesium butyrate (MgB) supplementation of dairy cows during the three-week close-up period was tested for its effects on blood energy analytes, rumination time, inflammation, and lactation performance. Methods: Daily milk yield was recorded and weekly milk samples collected for the first 70 days of lactation from MgB supplemented (MgB, n = 34), and unsupplemented (Control, n = 31) multiparous Holstein-Friesian cows. During a period from week 3 to week 10 postpartum, blood samples were taken and analyzed for various parameters, and ruminant activity was measured. Results: The MgB group yielded 25.2% more milk than the Control during week 1, and had increased milk fat and protein concentrations over a longer duration. Somatic cell counts (SCC) were decreased in the MgB group independent of days in milk. No differences were observed between groups in terms of plasma non-esterified fatty acids, β-hydroxybutyrate, glucose, or blood iCa levels. The MgB group had lower haptoglobin (Hp) levels during lactation relative to the Control group. Time spent ruminating increased after calving with MgB due to a shorter post calving rumination delay relative to the Control group. Conclusions: Prepartum MgB supplementation improved lactation performance without affecting blood energy analytes. The basis by which MgB also improved rumination activity remains to be determined, as DMI could not be assessed. As MgB lowered SCC and Hp concentrations, it is speculated that MgB may help minimize postpartum inflammatory processes. LA - English DB - MTMT ER -