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黄海玲 《江西畜牧兽医杂志》2014,(4):52-53
亚洲象属只有一种,也叫印度象,分布在南亚和东南亚。鼻端有一个指状突起,雌象没有象牙,即使是雄象也有一半没有象牙或象牙很小,耳朵比较小、圆,前足有5趾,后足有4趾。 相似文献
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母兔乳房炎是养兔生产中的一种常见、多发病,对发展养兔业有着极大的危害。1990年以来,笔者诊治本病千余例,治愈率达96%以上,现将诊疗体会报告如下:1病因分析1)母兔泌乳量不足,致使仔兔扯伤或咬伤乳头,感染致病菌而发病。2)母兔泌乳量过多或奶汁过浓,致使仔兔不能按 相似文献
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Tuntivanich P Soontornvipart K Tuntivanich N Wongaumnuaykul S Briksawan P 《Veterinary research communications》2002,26(4):297-299
Veterinary Research Communications - 相似文献
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Traditional conservation strategies can effectively preserve biodiversity within nature reserves, but may fail to mitigate the conflicts between rural development and wildlife conservation. This paper discusses the magnitude of the conflict and its development over time, focusing on elephant conservation and land resource management within and around nature reserves. We suggest that regulations alone can satisfy neither the demands to maintain biodiversity and ecosystem services nor the demands to achieve human welfare. More innovative tools such as informed land‐use planning and integrated conservation development projects are called for to reduce the agricultural interface with elephant range, and therefore to alleviate the damage caused by the conflict. 相似文献
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Blood samples were collected during the estrous cycle (n=3), throughout gestation (n=3), and during the periparturient period (n=11) to assess serum concentrations of cortisol in pregnant and non-pregnant Asian elephants whose reproductive status was being monitored by serum progestin determination. While serum cortisol concentrations remained constant throughout gestation, progestin concentrations decreased significantly (p<0.05) in the second half of pregnancy, declining to undetectable levels by 3 days before calving. During the non-luteal phase of the estrous cycle serum progestins varied from undetectable levels to 100pg/ml (53+/-10.7pg/ml) then increased steadily during the luteal phase (322+/-207.5pg/ml). There were no significant differences between serum cortisol concentrations during the luteal and those of the non-luteal phase (p>0.05). The mean cortisol concentration during the estrous cycle was about twice that during pregnancy (p>0.05). No substantial changes in maternal cortisol were found during the course of pregnancy or the periparturient period. 相似文献