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1 December 2014 Procedure and Mechanisms of Bamboo Cell Wall Digestion in the Giant Panda, Ailuropoda melanoleuca
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Abstract

Procedures and mechanisms of bamboo cell wall digestion in the giant panda were studied, in which several indirect methods were combined to avoid spoiling the intactness of the experimental animal. Examinations with surface scanning electron microscopy showed less extensive degradation of bamboo leaf tissues in panda feces than in the residue of sheep rumen digestion. Amounts of remaining fermentable organic matter, as estimated from the amount of volatile fatty acid produced during rumen fermentation in vitro, were much higher in the panda feces than in the residue of sheep rumen digestion. Incubation of fresh excreted panda feces for 12 hr at 37°C simulating extension of the digestion time caused no further progress of digestion. In vitro digestion with gastric juice of the panda showed some decrease of substrate cellulose at lower pH without corresponding reducing sugar production, although neither apparent cellulose digestion nor reducing sugar production was found with pressed fluid of the panda feces. Results showed that no bamboo cell wall digestion occurred with microbes or enzymes in the digestive tract of the panda.

© The Mammal Society of Japan
Tatsudo Senshu, Keiko Miyata, Akie Ohya, Junko Mikogai, Michiyo Morita, Tatsuko Nakao, Kohji Imazu, Lisong Fei, Lili Niu, Bo Zhao, Xingming Yu, Wenqi Lu, Chengdong Wang, Xuanzhen Liu, Xuebing Li, Mingxi Li, and Jingchao Lan "Procedure and Mechanisms of Bamboo Cell Wall Digestion in the Giant Panda, Ailuropoda melanoleuca," Mammal Study 39(4), 219-228, (1 December 2014). https://doi.org/10.3106/041.039.0405
Received: 3 February 2014; Accepted: 1 August 2014; Published: 1 December 2014
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