大熊猫“乐乐”死因已初步确定

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据中国科学院大熊猫繁育研究中心发布的消息，今年4月14日，由中国科学院大熊猫繁育研究中心负责的大熊猫“乐乐”因病不治去世，经过病理检查，大熊猫“乐乐”死因已初步确定为心脏病发作导致的心力衰竭。

病理学检查显示，乐乐头颅组织检查未见明显异常，心脏组织有大量渗出性炎症细胞浸润，其中血小板增多，肌纤维增多，纤维化程度轻微，心肌细胞渗出性炎症细胞浸润明显，心脏组织有大量渗出性炎症细胞浸润，心肌细胞内有脂肪、钙化及坏死等异常现象，说明乐乐的心脏病发作是由心肌细胞渗出性炎症细胞浸润所致。

专家认为，大熊猫“乐乐”的心力衰竭，可能与其营养状况、环境因素、遗传因素有关，同时也可能与其体内抗生素过量有关。

中国科学院大熊猫繁育研究中心表示，将分析“乐乐”的死因，以便为今后的大熊猫繁育和保护工作提供参考，并将继续加强大熊猫的繁育管理，保护大熊猫的健康。

According to the news released by the China Giant Panda Breeding Research Center of the Chinese Academy of Sciences, the Giant Panda \"Lele\" died of illness on April 14 this year. After the pathological examination, the cause of death of the Giant Panda \"Lele\" is preliminarily determined to be heart failure caused by heart attack.

Pathological examination showed that Lele's head tissue examination showed no obvious abnormalities, heart tissue infiltration of a large number of exudative inflammatory cells, including platelets, muscle fiber hyperplasia, mild degree of fibrosis, myocardial cells exudative inflammatory cell infiltration significantly, heart tissue infiltration of a large number of exudative inflammatory cells, myocardial cells in the abnormal phenomena of fat, calcification and necrosis, indicating that Lele's heart attack is caused by myocardial cell exudative inflammatory cell infiltration.

Experts believe that the heart failure of giant panda \"Lele\" may be related to its nutritional status, environmental factors, genetic factors, and may also be related to its excessive antibiotics in the body.

The China Giant Panda Breeding Research Center of the Chinese Academy of Sciences said that it will analyze the cause of death of Lele in order to provide reference for the future Giant Panda breeding and protection work, and will continue to strengthen the Giant Panda breeding management and protect the health of Giant Panda.