ACTA Theriologica Sinica ›› 2021, Vol. 41 ›› Issue (2): 224-234.DOI: 10.16829/j.slxb.150411

• SCIENTIFIC NOTE • Previous Articles    

Changes in body weight of captive giant panda cubs at early age

HUANG Xiangming, FENG Yongyou, LAN Jingchao, WU Kongju, YANG Kuixing, PENG Wenpei, YUAN Bo, XIE Yi, WANG Shuqun, CHEN Min, DENG Tao   

  1. Chengdu Research Base of Giant Panda Breeding, Sichuan Key Laboratory of Conservation Biology for Endangered Wildlife, Sichuan Academy of Giant Panda, Chengdu 610081, China
  • Received:2020-02-10 Online:2021-03-30 Published:2021-04-02

圈养大熊猫幼仔的早期体重变化

黄祥明, 奉永友, 兰景超, 吴孔菊, 杨奎兴, 彭文培, 袁博, 谢意, 王树群, 陈敏, 邓陶   

  1. 成都大熊猫繁育研究基地, 四川省濒危野生动物保护生物学重点实验室, 四川省大熊猫科学研究院, 成都 610081
  • 通讯作者: 黄祥明,E-mail:pandahxm@sina.cn
  • 作者简介:黄祥明(1965-),男,研究员,主要从事大熊猫等珍稀野生动物的饲养繁育研究;奉永友(1990-),男,畜牧师,主要从事大熊猫的饲养繁育研究,E-mail:277487535@qq.com.

Abstract: The mortality rates of captive giant panda cubs at 0 and 1 year old was 12.89% and 18.37% respectively,in order to improve survival rate and the nursing level of captive giant panda cubs,145 cubs born in 2000-2017 at the Chengdu Research Base of Giant Panda Breeding were analyzed by grouping primarily body weight(W0<100,100 ≤ W0<150,150 ≤ W0<200,W0 ≥ 200) and gender.The results indicated that(1) the weight curves of giant panda cubs with different primarily body weights during 180d were cubic functions.(2) Gender and primarily body weight of giant panda cubs had no interaction with the weight and average growth rate during 180 d.Gender did not affect the weight and their average growth rate of cubs,but the primarily body weight had a significant impact on the weight during 98 d and the average growth rate at the ascent stage(3-6 d),high-level stage(7-13 d),decline stage(14-45 d) and stabilization stage(46-180 d). The tokinaga of physiological weight loss was(1.77±0.67) d,and the day-age which weight recovered to primarily body weight was(4.59±1.23) d.(3) The primarily body weight and gender of giant panda cubs had no interaction on the maximum weight loss,the rate of maximum weight loss,the day-age of recovery to primarily body weight,the maximum growth rate and the day-age of maximum growth rate,but affected the day of maximum weight loss together.(4) Although the primarily body weight of giant panda cubs had a significant effect on the maximum weight loss,the day of maximum weight loss,the day-age of recovery to primarily body weight,and the maximum growth rate,it did not affect the rate of maximum weight loss and the day-age of maximum growth rate.Gender of giant panda cubs did not affect the maximum weight loss,the day-age of recovery to primarily body weight,the rate of maximum weight loss,the maximum growth rate and the day-age of maximum growth rate,but it did affect the day-age of maximum weight loss.These results indicated that the lower primarily body weight was,the less weight loss(maximum weight loss) would be,the faster speed with bottoming(the day of maximum weight loss) and recovery to primarily body weight(the day-age of recovery to primarily body weight) would be at early age.In addition,the lower primarily body weight was,the greater growth intensity of unit weight would be during the various stages at increasing growth rate,maintaining a high position,decreasing and tending to stabilize.The study revealed the characteristics of captive giant panda cubs in body weight at early age,and it provided abundant references for the early rearing of giant panda cubs.

Key words: Gender, Primarily body weight, Weight loss, Growth

摘要: The mortality rates of captive giant panda cubs at 0 and 1 year old was 12.89% and 18.37% respectively,in order to improve survival rate and the nursing level of captive giant panda cubs,145 cubs born in 2000-2017 at the Chengdu Research Base of Giant Panda Breeding were analyzed by grouping primarily body weight(W0<100,100 ≤ W0<150,150 ≤ W0<200,W0 ≥ 200) and gender.The results indicated that(1) the weight curves of giant panda cubs with different primarily body weights during 180d were cubic functions.(2) Gender and primarily body weight of giant panda cubs had no interaction with the weight and average growth rate during 180 d.Gender did not affect the weight and their average growth rate of cubs,but the primarily body weight had a significant impact on the weight during 98 d and the average growth rate at the ascent stage(3-6 d),high-level stage(7-13 d),decline stage(14-45 d) and stabilization stage(46-180 d). The tokinaga of physiological weight loss was(1.77±0.67) d,and the day-age which weight recovered to primarily body weight was(4.59±1.23) d.(3) The primarily body weight and gender of giant panda cubs had no interaction on the maximum weight loss,the rate of maximum weight loss,the day-age of recovery to primarily body weight,the maximum growth rate and the day-age of maximum growth rate,but affected the day of maximum weight loss together.(4) Although the primarily body weight of giant panda cubs had a significant effect on the maximum weight loss,the day of maximum weight loss,the day-age of recovery to primarily body weight,and the maximum growth rate,it did not affect the rate of maximum weight loss and the day-age of maximum growth rate.Gender of giant panda cubs did not affect the maximum weight loss,the day-age of recovery to primarily body weight,the rate of maximum weight loss,the maximum growth rate and the day-age of maximum growth rate,but it did affect the day-age of maximum weight loss.These results indicated that the lower primarily body weight was,the less weight loss(maximum weight loss) would be,the faster speed with bottoming(the day of maximum weight loss) and recovery to primarily body weight(the day-age of recovery to primarily body weight) would be at early age.In addition,the lower primarily body weight was,the greater growth intensity of unit weight would be during the various stages at increasing growth rate,maintaining a high position,decreasing and tending to stabilize.The study revealed the characteristics of captive giant panda cubs in body weight at early age,and it provided abundant references for the early rearing of giant panda cubs.

关键词: 性别, 初生体重, 减重, 增长

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