• Asian-Australasian Journal of Animal Sciences
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• 제5권2호
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• pp.383-388
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• 1992

Nutritional status of macro minerals (Ca, Mg and P) in goats grazed on the native pasture was investigated for 2 years in Luzon Island, Republic of the Philippines. Three regions in Luzon Island (Los Banos; Southern area, Munoz, Nueva Ecija; Central area and Baguio; Northern area) were objected to collect the samples of forages and blood of goats on the pasture. The average values in Ca, Mg and P contents of all the forage samples were 0.29-1.32, 0.13-0.56 and 0.15-0.45% of dry matter, respectively, and these figures almost exceeded the required dietary levels for sheep. There was no obvious changes in mineral content of forages between the seasons of rainy and dry, or among regions. In blood Ca level, more than a half of goats (57.9%) without supplement showed the level below the lower limit, and the low level was not improved even when they fed with some supplemental concentrates. The plasma levels of Mg and P were satisfactory, referring to the lower limit of normal level in goats. It is, therefore, necessary to decide the requirement and to establish a most suitable technique for supplying Ca to grazing goats in Luzon Island.

• 한국해안해양공학회지
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• 제9권3호
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• pp.140-154
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• 1997

1994년 11월 15일 Philippine의 Mindoro섬 북측에서 강진이 발생하였다. 이 지진으로 발생한 쓰나미는 Mindoro섬 북측 연안 및 Verde섬 등의 연안에 래습하여 해안역이 범남, 침수되었으며 이로 인하여 가옥파괴 등 큰 재산피해와 사상자를 내었다 이 쓰나미는 Luzon섬에도 전파되어 Batangas에서 쓰나미 발생 약 10분후에 쓰나미가(주)한진의 건설현장에서 관측되었다. 본 연구에서는 쓰나미 수치모형을 수립하여 원역 및 범남역의 쓰나미 전파 및 범남을 산정하고 현장관측결과를 비교 검토하였다. 진원이 Luzon섬과 Mindoro섬 사이에 위치하였으며 인근의 지진관측강의 자료가 불충분하여 국제지진 Network상에서 제시한 기본자료를 근거로 여러 경우의 진원모형의 모수들을 가정하여 산정치가 관측치와 유사한 결과를 가질 때까지 모형산정을 하였다. 또한 과학가시화기법에 의해 쓰나미 전파와 범남모형 시뮬레이션 애니메이션 결과로서 제시하였다

• Asian-Australasian Journal of Animal Sciences
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• 제5권2호
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• pp.389-395
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• 1992

Nutritional status of trace minerals (Se, Cu and Zn) in goats grazed on the native pasture was investigated during 2 years in Luzon Island, Republic of the Philippines. Three regions (South, Central and North) were objected to collect the samples of blood of goats and forages on the pasture. Se content of major species forages in the pasture was $24.7{\mu}g/kg$ DM, and was clearly lower than the value ($200{\mu}g/kg$ DM) required commonly for ruminant feed. The Cu and Zn contents of all forage samples ranged from 7.6 to 24.3 and 11.4 to 50.6 mg/kg DM, respectively, and these values almost exceeded the dietary level required for sheep. The blood Se levels in about 55% of goats grazed alone were under the normal range ($20{\mu}g/l$), but it in goats fed some concentrates as a supplement were almost within a normal ranges ($20-200{\mu}g/l$), though the Cu content of forages almost exceeded the dietary level required commonly. The 4-13% of plasma samples of goats without supplement showed the Zn level below the lower limit (0.6 mg/l) of normal range. The Zn deficiency was mostly improved by the addition of a small amount of concentrates. From these results, it will be necessary to study about unstable Cu status of grazed goats in Luzon Island regarding an interaction of Cu and other elements known to relate to the malabsorption of dietary Cu.

• Asian-Australasian Journal of Animal Sciences
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• 제16권2호
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• pp.189-197
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• 2003

Soluble glass bolus with selenium (Se), copper (Cu) and cobalt (Co) was administered intraruminally to Philippine grazing does fed under backyard farming conditions to determine its effect on blood mineral status. Forty-five does were dosed with SGB intraruminally every 6 months, whereas 15 were without SGB during this experimental period of 10 months. Blood of does in both treatment groups were collected every other month and blood Se, plasma Cu, Ca, P and Mg were determined in this study. All does did not show clinical Se, Cu, Ca, P or Mg deficiency during this experimental period. Selenium concentration of treated does increased (p<0.01) after beginning of this experiment, whereas the level of control does decreased slowly (p<0.01). Two months after SGB administration, all treated does had higher blood Se than the lower limit of $20{\mu}g/l$ suggested by NRC (1981), whereas some control does had lower blood Se concentration than the lower limit of $20{\mu}g/l$. On the other hand, plasma Cu concentration of treated does started to increase more remarkably than control does 4 months after this experiment had started although the difference was insignificant. There were no significant differences between plasma Ca, P or Mg concentration of does in both treatment groups. Soluble glass bolus had no harmful effects on plasma macro mineral concentrations of grazing does. This study showed that SGB was available as mineral supplement to improve imbalances of selected mineral of grazing goats in the traditional backyard conditions in Luzon Island, Philippines.