Increase of the activity of phase II antioxidant enzymes in rats after a single dose of coffee     

Vicente SJ  Ishimoto EY  Cruz RJ  Pereira CD  Torres EA 《Journal of agricultural and food chemistry》2011,59(20):10887-10892

This study evaluated the acute effect of the administration of coffee brew in the activity of phase II antioxidant enzymes in the hepatic tissue of rats. A single dose of this beverage increased the activity of the enzymes SOD, CAT, and GPx; the maximum increase occurred 1 h after administration (19.1, 22.1, and 25.1%, respectively). These changes were statistically significant (p < 0.05), the response was shown to be dose-dependent (p < 0.05), and the return to basal levels took >4 h from the intervention, suggesting a long-term effect. The total antioxidant capacity of the hepatic tissue also exhibited a peak 1 h after the intervention (6.5%), but the increase was not statistically significant and the response was not dose-dependent due to the low exposure to coffee. These results indicate that coffee increases the activities of antioxidant enzymes, improving protection against oxidative stress.  相似文献   

Tolazoline-induced apnea in mule deer (Odocoileus hemionus)     

Mortenson JA  Robison JA 《Journal of zoo and wildlife medicine》2011,42(1):105-107

Eighteen mule deer (Odocoileus hemionus) and six Columbia black-tailed deer (Odocoileus hemionus columbianus) were held in pens and repeatedly anesthetized from April 2004 through June 2005 as part of an external parasite study. Deer were anesthetized using a combination of Telazol and xylazine hydrochloride (HCL) administered intramuscularly. Tolazoline HCL was slowly administered at 4 mg/kg intravenously to reverse the effects of xylazine with good results. For 17 of the 19 mule deer anesthesias in the fall of 2004, a mean dose of 7.3 mg/kg of intravenous tolazoline (range 6.1-8.4 mg/kg) was given by mistake. This paper describes clinical signs of apnea, muscle tensing, and fasciculations immediately following intravenous administration of tolazoline HCL in mule deer (O. hemionus) at 1.5-3 times the recommended dose. Mean dose for black-tailed deer during this time was 8.1 mg/kg (range 5.5-12.4 mg/kg) with no clinical signs as seen in the mule deer. Based on these findings, intravenous tolazoline use in mule deer is recommended at < or = 4 mg/kg.  相似文献   

Effect of Age on Digestibility of Various Feedstuffs in Horses     

S. Elzinga  B. Nielsen  H. Schott  J. Rapson  C. Robison  J. McCutcheon  P. Harris  R. Geor 《Journal of Equine Veterinary Science》2011,31(5-6):268-269

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Realized heritability estimates in boars divergently selected for testosterone levels(1,) (2)     

Robison OW  Lubritz D  Johnson B 《Zeitschrift für Tierzüchtung und Züchtungsbiologie》1994,111(1-6):35-42

SUMMARY: Data were collected from 1982 through 1992 from 100 sires and 891 Duroc boars. Testosterone production was measured from peripheral blood samples before (PRE) and after (POST) GnRH challenge. Additionally, data were collected on testes volume at 168 d (TVOL), days to 104 kg (DAYS104), number born alive (NBA) and backfat adjusted to 104 kg body weight (FAT). Realized heritabilities were estimated from the regression of response on cumulative selection differentials. Heritabilities for POST were .15 ± .18 and .24 ± .08 in the low and high lines, respectively. This compares with the estimate of .26 ± .21 from son-sire regressions. The regression of other traits on cumulative selection differentials can be viewed as realized correlated responses to selection. After 10 generations, the high line was approximately three times greater than the low line for both PRE and POST levels of testosterone. Although not significant, high line pigs required fewer days to reach 104 kg, had more backfat and larger testes than low line pigs. Litter size was significantly larger for high line than for low line. ZUSAMMENFASSUNG: Realisierte Heritabilit?tssch?tzungen von Divergenz für Testosteronspiegel selektierten Ebern Die Daten stammen aus dem Zeitraum 1982-1992 von 891 Duroc Ebern aus 100 Vatertieren. Testosteronproduktion wurde von peripheren Blutproben vor (PRE) und nach (POST) GnRH-Gaben gemessen. Zus?tzlich wurden Angaben über Hodenvolumen am Tag 168 (TVOL), Zeitraum bis 104 kg Lebendgewicht (DAYS104), Zahl lebend geborener (NBA) und auf 104 kg K?rpergewicht korrigierte Rückenspeckdicke (FAT) erhoben. Realisierte Heritabilit?tswerte wurden aus der Regression von Selektionserfolg auf kumulative Selektionsdifferenzen gesch?tzt. Heritabilit?t für POST waren 0,15 ± 0,18 und 0,24 ± 0,08 in der Minus- und in der Pluslinie. Aus Sohn-Vater-Regressionen ergab sich 0,26 ± 0,21. Die Regression anderer Eigenschaften auf kumulative Selektionsdifferenzen k?nnen als realisierte korrelierte Selektionserfolge betrachtet werden. Nach 10 Generationen hatte die Pluslinie etwa dreimal h?here PRE- und POST-Spiegel von Testosteron als die Minuslinie. Obwohl nicht signifikant, brauchten Schweine der Pluslinie weniger Tage bis 104 kg, waren fetter und hatten gr??ere Hoden als Schweine der Minuslinie. Die Wurfgr??e der Pluslinie war h?her als in der niedrigen Linie.  相似文献   

Influence of various concentrate‐to‐roughage ratios on dietary intake and nutrient digestibilities of weanling horses     

Susan K. Turcott‐White  Brian D. Nielsen  Cara I. Robison  Christine D. Skelly  Diane S. Rosenstein  Abby Pritchard  Thomas Herdt 《Journal of animal physiology and animal nutrition》2019,103(1):295-304

The objective of this study was to compare the feed intake and the apparent digestibilities of three different diets varying in concentrate‐to‐roughage ratios in weanling horses (n = 24) at 5 and 8 months of age. Horses were stratified by breed, gender, birth date and body weight and assigned to one of three dietary treatments containing the following concentrate‐to‐roughage ratios on an as‐fed basis: 70:30 (High Con), 50:50 (Equal) and 30:70 (Low Con). All horses were fed their respective diets for a 10‐day adaptation period and a 4‐day collection period at 5 and 8 months. There were no differences in BW or daily feed intake among treatments during both trials. The horses consuming Low Con had a greater amount of faecal output than High Con at both 5 and 8 months (p < 0.01). At 5 months, High Con had the highest crude protein (CP) digestibility (p < 0.05). At 8 months, High Con had a higher CP digestibility than Low Con (p < 0.01) and tended to be higher than Equal (p = 0.07). Acid detergent fibre (ADF) digestibility did not differ among treatments; however, horses fed the Low Con tended to digest a higher percentage of neutral detergent fibre (NDF) than both the Equal and High Con treatments (p = 0.09). Horses in the High Con treatment tended to digest a higher percentage of energy than those in the Low Con treatment (p = 0.06). Weanlings seem to digest protein more thoroughly when fed high‐concentrate diets and may digest fibre more efficiently when fed diets higher in fibre.  相似文献   

Identification of iron reductase isozymes in soybeans 1     

Kevin A. Cook  Von D. Jolley  D.J. Fairbanks  Laren R. Robison 《Journal of plant nutrition》2013,36(2):457-467

Native polyacrylamide gel electrophoresis (PAGE) analysis of iron reductase expression in thirteen soybean (Glycine max L.) cultivare revealed the existence of several electrophoretically distinguishable proteins with iron reducing activity. Iron‐deficiency stress may induce expression of proteins with iron reductase activity having Rf values of 0.18 and 0.23 in two iron‐efficient cultivars, A7 and Anoka T, respectively. Variation of iron reductase isozyme expression among cultivars was present, but did not correlate with the iron reducing potential of the cultivars or with field chlorosis resistance ratings. Observation of isozyme expression over time in iron‐efficient A7 and iron‐inefficient T203 revealed expression in A7 of two iron reducing bands absent in T203. However, staining intensity and time of initiation indicate that these bands are not associated with the enhanced iron reduction induced by iron deficiency. Iron reductase isozyme expression cannot account for enhanced iron reduction in A7. It is unlikely that selection for iron reductase isozymes can be used to advance genetic resistance to iron‐deficiency chlorosis in soybeans.  相似文献   

Chopping hay before feeding does not influence fecal particle size,blood variables,or water intake in three-year-old Arabians.     

R.A. LeCompte  B.D. Nielsen  C.I. Robison  P. Harris 《Journal of Equine Veterinary Science》2013

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Disappearance of phytate phosphorus is not altered by addition of phytase to equine diets     

E.D. Lamprecht  B.D. Nielsen  C.I. Robison 《Journal of Equine Veterinary Science》2013

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Effect of cutting storage conditions during planting operations on the survival and biomass production of four willow (Salix L.) clones     

Volk  T.A.  Ballard  B.  Robison  D.J.  Abrahamson  L.P. 《New Forests》2004,28(1):63-78

Planting vigorous cuttings that quickly develop shoots and roots is essential to the biological and economic success of willow biomass crops. Current recommendations are that cuttings should be planted within 2–4 days of being removed from long-term cold storage at –4°C. However, maintaining this short time period is not always feasible. Results from greenhouse and field experiments indicated that leaving cuttings out of –4°C long-term cold storage for up to 12 days before planting did not have a significant impact on survival or biomass production. For cuttings removed from long-term cold storage 23 days before planting, survival and per tree biomass production were lower for three of the four clones tested in a field trial. Returning cuttings to a –20°C freezer 5–9 days after removal from –4°C long-term cold storage, reduced the proportion of cuttings that developed roots or shoots, and shoot biomass of all clones. However, returning cuttings to either a +2°C cooler or a –4°C freezer had no effect on shoot biomass after 3 weeks of growth. Returning cuttings to supplemental cold storage at +2 to –4°C may extend the time that cutting viability can be maintained after being removed from long-term cold storage and thawed. Returning cuttings to a –20°C freezer for supplemental storage is not recommended.  相似文献   

Dynamics of genetic and maternal effects in mice   总被引：3，自引：0，他引：3  

J J Rutledge  O W Robison  E J Eisen  J E Legates 《Journal of animal science》1972,35(5):911-918

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