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Physiological Factors Depressing Feed Intake and Saliva Secretion in Goats Fed on Dry Forage
Sunagawa, K.,Ooshiro, T.,Nakamura, N.,Ishii, Y.,Nagamine, I.,Shinjo, A Asian Australasian Association of Animal Productio 2007 Animal Bioscience Vol.20 No.1
Ruminants eating dry forage secrete large volumes of saliva which results in decreased plasma volume (hypovolemia) and the loss of $NaHCO_3$ from the blood. The present research investigated whether or not hypovolemia and the loss of $NaHCO_3$ from the blood in goats brought about by dry forage feeding actually depresses feed intake and saliva secretion, respectively. The present experiment consisted of three treatments (NI, ASI, MI). In the control treatment (NI), a solution was not infused. In the ASI treatment, i.v. infusion of artificial parotid saliva was initiated 1 h before feeding and continued for the entire 2 h feeding period. In the MI treatment, iso-osmotic mannitol solution was infused. The NI treatment showed that hematocrit and plasma total protein concentration were increased due to decreased circulating plasma volume brought about by feeding. In the ASI treatment, the fluid and $NaHCO_3$ that were lost from the blood because of a feeding-induced acceleration of saliva secretion was replenished with an intravenous infusion of artificial parotid saliva. This replenishment lessened the levels of suppression on both feeding and parotid saliva secretion. When only the lost fluid was replenished with an intravenous infusion of iso-osmotic mannitol solution in the MI treatment, the degree of feeding suppression was lessened but the level of saliva secretion suppression was not affected. These results indicate that the marked suppression of feed intake during the initial stages of dry forage feeding was caused by a feeding-induced hypovolemia while the suppression of saliva secretion was brought about by the loss of $NaHCO_3$ from the blood due to increased saliva secretion during the initial stages of feeding.
T. Oka,Y. Tanabe,S. Harada,K. Abe,N. Ishii,T. Maruyama,T. Sato,H. Imaizumi,S. Nishimura,M. Sengoku,H. Ohkaw 한국공학교육학회 2010 공학교육연구 Vol.13 No.2
We have constructed three characteristic internship programs which were based on the different aspects of view by the grant in aid from MEXT of Japanese government. The most outstanding program is what we call “Market Internship”, where the students directly approach the market in which the engineering technologies are utilized. Then they must find out the problems and advantages of engineering technologies from the view of consumers. The experience would result in the enhancement of motivation to study the engineering technologies. It would be substantially effective in engineering education curriculums that the engineers of private companies in which university students will get their own jobs in near future could take important roles to conduct them. We believe that this activity would effective in reducing gaps they would feel between before and after getting jobs in practical society, and lowering the ratio of unemployment after getting jobs
atsushi Kojima,A. Itakura,H. Kakiuchi,H. Higaki,K. Ishii,M. Ichimura,M. Yoshikawa,N. Kaidou,S. Fujimoto,T. Cho,T. Yamaguchi,Y. Miyata 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.49 No.III
The radial particle flux induced by drift-type fluctuations is observed by use of a gold neutral beam probe in the tandem mirror GAMMA 10. When the drift waves are excited in the plasma, the measured phase difference between the density and potential fluctuations is not zero; the radial profile of the phase difference is not constant. This showed that the radial particle flux had some profile and then the density profile would be varied due to the radial particle transport induced by the fluctuations through the radial particle flux. Experimental results showed the density reduction due to the transport induced by the drift-type fluctuations. The phase difference is an important parameter to decide the radial particle flux. The profiles of the phase difference are measured to understand the decision mechanism of the phase difference. The radial profile of the phase difference is varied by the ion heating power, the density and the potential profiles. As a result, the phase difference had a correlation with the difference between the local drift frequency (the electron diamagnetic drift frequency and the E×B drift frequency) and the observed frequency.