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Szabo A.,University of Kaposvar | Szabo-Fodor J.,Hungarian Academy of Sciences | Febel H.,Research Institute for Animal Breeding | Romvari R.,University of Kaposvar | And 2 more authors.
Food and Chemical Toxicology | Year: 2014

Weaned rabbits were fed diets contaminated with 2mg/kg diet T-2 toxin alone, or 10mg/kg diet fumonisin B1 (FB1) alone, and both toxins in combination (2+10mg/kg, resp.), as compared to a toxin free control. Samplings were performed after 2 and 4weeks. Bodyweight of the T-2 fed group was lower after 4weeks; the liver weight increased dramatically. Red blood cell (RBC) Na+/K+ ATPase activity decreased after 4weeks in the T-2 group, it increased in the FB1 group and antagonism was found by the combined treatment. The RBC membrane fatty acid profile was modified by both toxins similarly during the entire feeding. After 4weeks T-2 alone and in combination (with FB1) was found to increase mean cell volume (MCV). The time-dependent alterations in the T-2 group were significant for MCV (increase) and the mean cell haemoglobin (increase). The active monovalent cation transport was altered by both mycotoxins. Most probably FB1 exerts its sodium pump activity modification via an altered ceramide metabolism (behenic acid decrease in the RBC membrane), while for T-2 toxin a moderate membrane disruption and enzyme (protein) synthesis inhibition was supposed (ca. 75% decrease of the sodium pump activity). © 2014 Elsevier Ltd. Source

Hemberg E.,Herrgarden Haddebo Bruk | Einarsson S.,Swedish University of Agricultural Sciences | Kutvolgyi G.,Herrgarden Haddebo Bruk | Kutvolgyi G.,Research Institute for Animal Breeding | And 5 more authors.
Theriogenology | Year: 2015

This study investigated the relationship of the health of the newborn foal and (1) number of polymorphonuclear leukocytes (PMNLs) in the amniotic fluid, (2) bacteria present in the amniotic fluid and the venous umbilical blood, and (3) bacteria present in the uterus of the newly foaled mare. A further aim was to investigate relationships between the bacteriologic findings in the amniotic fluid, umbilical blood, and uterus postpartum. Samples were taken from 50 Standardbred trotter foaling mares from a well-managed stud in Sweden. Parturition was spontaneous in all cases. Length of pregnancy, parturition and postpartum complications, health status of the foal, the time between foaling and the expulsion of the placenta, and the number of postfoaling mares becoming pregnant after insemination were recorded. Amniotic fluid was collected when the amniotic vesicle was clearly visible; it was analyzed for bacteriology and occurrence of PMNLs. Umbilical blood was analyzed for the presence of bacteria and the concentration of serum amyloid A. The uterus of the mare was swabbed for bacteriology 6 to 17hours postpartum. A blood sample was taken from the foal before administering plasma. The foals were divided into two groups: group 1 required up to 2 hours to rise after birth (≤2 hours; 31 foals) and group 2 required more than two hours (>2 hours; 19 foals). The length of gestation varied between 332 and 356days; there was no significant difference in gestation length between the two foal groups. Partus and postpartum complications occurred in a significantly higher proportion of mares giving birth to group 2 foals than group 1 foals (P=0.02), although uterine culture postpartum and the subsequent pregnancy rate per season were not different between the groups. Compromised health status was significantly higher among foals belonging to group 2 than group 1 (P=0.001). Most of the amniotic samples contained 5% or less PMNLs. Only three samples contained more than 30% PMNLs; group 2 foals had the highest percentage of PMNLs. Bacterial growth was found in both amniotic fluid (57%) and umbilical blood (35%) in mares irrespective of whether their foals were healthy or compromised. Coagulase-negative staphylococci were the most frequent bacteria. There were no differences in bacterial occurrence in amniotic fluid or in umbilical blood between the two foal groups. © 2015 Elsevier Inc. Source

Matis G.,Szent Istvan University | Kulcsar A.,Szent Istvan University | Turowski V.,University of Veterinary Medicine Hannover | Febel H.,Research Institute for Animal Breeding | And 2 more authors.
Domestic Animal Endocrinology | Year: 2015

The influence of butyrate on insulin signaling in chickens was studied because butyrate is produced during microbial fermentation in the large intestine of birds, and butyrate is widely used as a feed additive in animal production. Ross 308 broiler chickens received a daily intraingluvial bolus of sodium butyrate (0.25g/kg body weight) on days 20-24 of life (n = 10). Plasma butyrate concentration increased after receiving oral butyrate treatment (P < 0.001). Oral butyrate application was associated with decreased protein expression of insulin receptor β subunit (IRβ) in liver (P = 0.008) and both abdominal (P = 0.003) and subcutaneous adipose tissue (P < 0.001), but with elevated IRβ expression in muscle (P = 0.045), assessed by Western blotting. The quantity of hepatic phosphatidyl-inositol-3-kinase was reduced in the butyrate-treated group (P = 0.007); further, mammalian target of rapamycin was downregulated by butyrate in liver (P < 0.001) and subcutaneous adipose tissue (P = 0.038). Oral butyrate application provoked reduced systemic insulin sensitivity in chickens, indicated by elevated fasting blood glucose and subsequently, insulin level. However, responses of insulin signaling cascade to butyrate were tissue specific, suggesting that butyrate could act on glucose shifting among tissues by selectively increasing the glucose uptake of skeletal muscle via IRβ upregulation. © 2014 Elsevier Inc. Source

Szabo A.,University of Kaposvar | Nagy J.,University of Kaposvar | Bokor J.,University of Kaposvar | Febel H.,Research Institute for Animal Breeding | And 4 more authors.
Archiv Tierzucht | Year: 2013

Yearling red deer (Cervus elaphus) hinds of identical initial body weight were reared on a monocotyledonous grass (group 1) or on a papillonaceous plant pasture (group 2) for 212 days. At the end of the experiment (when deer were shot) blood was taken from ten animals of each group for serum biochemical analysis. Hinds of group 2 provided higher final body weight (90±3.5 vs. 101±6.6 kg) and higher daily body weight gain (105.7±10.7 vs. 153.8±26.8 g/day). Within serum nitrogenous compounds group 2 provided higher total protein concentrations, while from the lipids only serum triglyceride levels were higher in this group. Serum potassium was in both groups higher than the reference range with a superposed slight hyperkalaemia in group 2. Higher lactate dehydrogenase and alkaline phosphatase activities were found in group 2 and lower aspartate aminotransferase activity values. Inorganic phosphate concentration showed a significant difference (group 1 provides higher values). Results refer to an expressed venison growth as a result of the rich dietary protein supply of group 2. Findings were evaluated as well with discriminant factor analysis, outlining the relative importance of the single blood biochemical parameters in shaping the inter-group differences. © 2013 by the authors. Source

Brussow K.-P.,Leibniz Institute for Farm Animal Biology | Egerszegi I.,Research Institute for Animal Breeding | Ratky J.,Research Institute for Animal Breeding
Journal of Reproduction and Development | Year: 2014

The uterotubal junction (UTJ) and caudal isthmus are recognized as a functional pre-ovulatory sperm reservoir (SR). Spermatozoa are released from the SR in a complex and concerted action. However, whether this functionality is restricted only to the ovulatory period is still open to debate. Our study was aimed to analyze the presence of spermatozoa within the UTJ (SR), isthmus (ISTH) and ampulla (AMP) after laparoscopic intrauterine insemination (LIUI) either in the peri- (PERI) or post-ovulatory (POST) period or at mid cycle (MID). Each uterine horn of estrus synchronized gilts (n=12) was inseminated with 20 ml sperm (29.5×106 cells/ml). Oviducts were recovered 7 h after LIUI and separated into the UTJ, ISTH and AMP, and sections were flushed with 10 ml PBS+EDTA solution. After centrifugation, the sperm pellet was evaluated by Čeřovský staining. The median sperm numbers in the PERI, POST and MID groups were 578, 171 and 789 in the UTJ; 545, 233 and 713 in the ISTH; and 496, 280 and 926 in the AMP, respectively, and there were differences between the POST and MID groups (P<0.05) but not between the oviductal sections of each group (P>0.05). Compared with the MID group, the percent of intact sperm cells was higher (P<0.01) in the PERI and POST groups (32.8 vs. 66.4 and 76.8%). Also, the percentages of aberrations in the acrosome and tail were higher (P<0.05) in the MID group. Based on this, it can be assumed that the sperm reservoir is active during different phases of the estrus cycle. However, the mid-cycle oviduct environment considerably impairs sperm cell quality. © 2014, by the Society for Reproduction and Development. Source

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