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Katsuji UETAKE Toshie ISHIWATA Toshio TANAKA Shusuke SATO 《Animal Science Journal》2009,80(6):705-708
We investigated 10 suckling cross‐bred calves (Japanese Black (Wagyu) × Holstein) and collected data on the physiological stress responses of the young calves to long‐haul road transportation. All calves were male and 21–47 days of age. The calves were obtained at a livestock market and were transported from the market to the university in a commercial livestock vehicle. The total haul distance and time were 306.9 km and 7 h, respectively. The calves were deprived of food and water during transportation. Blood samples, electrocardiograms, and rectal temperatures were collected immediately after transportation and after one week of habituation at the university. Serum pH was significantly lower (P < 0.01), while serum triiodothyronine, aspartate aminotransferase, non‐esterified fatty acids (all P < 0.05), and heart rate (P < 0.01) were significantly higher immediately after transportation. The concentrations of blood lactic acid (P = 0.08) and serum alanine aminotransferase (P = 0.06) tended to be higher after transportation. These physiological responses suggest that the stress caused by long‐haul transportation causes significant effects on liver function in young calves. 相似文献
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Inhibitory effect of enokitake extract on melanosis of shrimp 总被引:1,自引:0,他引:1
MI SOON JANG AIKO SANADA HIDEKI USHIO MUNEHIKO TANAKA TOSHIAKI OHSHIMA 《Fisheries Science》2003,69(2):379-384
ABSTRACT: The inhibitory effect of 70% acetone extract of enokitakemushroom Flammulina velutipes on the mealnosis of shrimp Trachypenaeuscurvirostris was investigated. The acetone extract effectivelyprevented the mushroom tyrosinase activity as well as melanosisof American crayfish Procambarus clarkii hemolymph. Wheneach of two fractions of the acetone extract, which were unadsorbedon both of Dowex 50W X8 and/or DEAE-TOYOPERAL 650 columns,was mixed with hemolymph of the American crayfish, the melanosisthat usually occurs in the heparinized hemolymph was effectivelyprevented. Immersing shrimp in the acetone extract of enokitakemushroom delayed the color darkening usually found in the post-mortemshrimp. These observations suggested that enokitake mushroom containedcertain compounds that inhibit the formation of melanin due to thecatalytic oxidation of polyphenol oxidase, as well as mushroom tyrosinaseactivity. 相似文献
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