Study of the digestive rate of coarse cellulose of giant pandas

1998 ◽  
Vol 9 (1) ◽  
pp. 44-47
Author(s):  
Chen Yucun ◽  
Zou Longyi ◽  
Zheng Dingtuan
Keyword(s):  
Giant Pandas ◽  
Digestive Rate

The effect of diffusion on giant pandas that live in complex patchy environments

2015 ◽  
Vol 20 (1) ◽  
pp. 56-71 ◽  
Author(s):  
Xiangyun Shi ◽  
◽  
Guohua Song ◽  
Zeyu Li ◽  
◽  
...  
Keyword(s):  
Giant Pandas ◽  
Patchy Environments

Movement and activity of reintroduced giant pandas

Ursus ◽  
2019 ◽  
Vol 29 (2) ◽  
pp. 163
Author(s):  
Ke He ◽  
Qiang Dai ◽  
Andrew Foss-Grant ◽  
Eliezer Gurarie ◽  
William F. Fagan ◽  
...  
Keyword(s):  
Giant Pandas

scholarly journals Positive responses from giant pandas to the Natural Forest Conservation Programme based on slope utilization

2021 ◽  
pp. e01616
Author(s):  
Mingsheng Hong ◽  
Wei Wei ◽  
Jufeng Tang ◽  
Hong Zhou ◽  
Han Han ◽  
...  
Keyword(s):  
Forest Conservation ◽  
Natural Forest ◽  
Giant Pandas ◽  
Conservation Programme

Diet, habitat environment and lifestyle conversion affect the gut microbiomes of giant pandas

2021 ◽  
Vol 770 ◽  
pp. 145316
Author(s):  
Lei Jin ◽  
Yan Huang ◽  
Shengzhi Yang ◽  
Daifu Wu ◽  
Caiwu Li ◽  
...  
Keyword(s):  
Giant Pandas ◽  
Habitat Environment

scholarly journals Delayed implantation in giant pandas: the first comprehensive empirical evidence

Reproduction ◽  
2009 ◽  
Vol 138 (6) ◽  
pp. 979-986 ◽  
Author(s):  
Hemin Zhang ◽  
Desheng Li ◽  
Chendong Wang ◽  
Vanessa Hull
Keyword(s):  
Reproductive Biology ◽  
Giant Panda ◽  
Reproductive Development ◽  
Mammary Glands ◽  
Strongly Correlated ◽  
Physiological Changes ◽  
Giant Pandas ◽  
Delayed Implantation ◽  
Infant Birth ◽  
First Time

Successful conservation of an endangered species relies on a good understanding of its reproductive biology, but there are large knowledge gaps. For example, many questions remain unanswered with regard to gestation and fetal development in the giant panda. We take advantage of a sample size that is unprecedented for this species (n=13) to explore patterns in reproductive development across individuals at the China Conservation and Research Center for the Giant Panda. We use ultrasound techniques on multiple giant pandas for the first time to empirically confirm what has long been suspected that pandas exhibit delayed implantation of the embryo. We also show that the duration of postfetal detection period is remarkably similar across individuals (16.85±1.34 days). Detection of fetus by ultrasound was strongly correlated to the peak in urinary progesterone (r=0.96, t=8.48, d.f.=8, P=0.0001) and swelling in the mammary glands (r=0.79, t=3.61, d.f.=8, P=0.007) and vulva (r=0.91, t=6.40, d.f.=8, P=0.0002) of adult females. When controlling for both the duration of the total gestation period and the postfetal detection period, infant birth weight was only significantly predicted by the latter (β=11.25, s.e.m.=4.98, t=2.26, P=0.05), suggesting that delayed implantation increases flexibility in the timing of birth but is not important in dictating infant growth. This study informs reproductive biology by exploring the little-studied phenomenon of delayed implantation in relationship to physiological changes in pregnant giant panda females.

scholarly journals Acrosomal integrity and capacitation are not influenced by sperm cryopreservation in the giant panda

Reproduction ◽  
2004 ◽  
Vol 127 (5) ◽  
pp. 547-556 ◽  
Author(s):  
R E Spindler ◽  
Y Huang ◽  
J G Howard ◽  
P Wang ◽  
H Zhang ◽  
...  
Keyword(s):  
Sperm Motility ◽  
Giant Panda ◽  
Calcium Ionophore ◽  
Sperm Cryopreservation ◽  
Management Tools ◽  
Giant Pandas ◽  
Before And After ◽  
Cryopreservation Protocol ◽  
Acrosomal Integrity

Sperm cryopreservation and artificial insemination are important management tools for giant panda breeding and the preservation of extant genetic diversity. This study examined the influence of freeze–thawing on sperm function, specifically capacitation. Sperm from nine giant pandas were assessed before and after rapid (− 40 and − 100 °C/min) cryopreservation by incubation in HEPES-buffered Ham’s F10 medium with and without the capacitation accelerators, 3-isobutyl-1-methylxanthine (IBMX) and dibutyryl cyclic AMP (dbcAMP). At 0, 3 and 6 h of exposure, aliquots were assessed for sperm motility traits and capacitation, defined as the proportion of sperm with intact acrosomes following exposure to solubilised zonae pellucidae (ursid or felid) or calcium ionophore subtracted from the proportion of sperm with intact acrosomes before exposure. Although mean±s.e.m. sperm motility post-thaw (56.1 ± 3.9% at 0 h) was less (P < 0.05) than pre-freeze (71.7 ± 6.0%), there was no difference (P > 0.05) in the proportion of acrosome-intact sperm (fresh, 93.0 ± 1.7% versus cryopreserved–thawed, 81.7 ± 4.7% at 0 h). Incidence of capacitation was greater (P < 0.05) in fresh sperm incubated with capacitation accelerators IBMX and dbcAMP (9 h: 50.9 ± 1.1) compared with fresh sperm incubated without accelerators (9 h: 41.2 ± 1.1%). Frozen–thawed sperm preincubated without accelerators underwent capacitation (49.6 ± 1.1%) to a greater extent (P < 0.05) compared with these fresh counterparts. Thawed samples with (9 h: 45.9 ± 1.4%) and without accelerators (9 h: 41.2 ± 1.1%) did not differ (P > 0.05) during the 9-h incubation. We conclude that giant panda spermatozoa (1) undergo capacitation in vitro with or without chemical accelerators and (2) withstand a rapid cryopreservation protocol, including retaining normal acrosomal integrity and functional capacitation ability.

scholarly journals Designing a conservation plan for protecting the habitat for giant pandas in the Qionglai mountain range, China

2006 ◽  
Vol 12 (5) ◽  
pp. 610-619 ◽  
Author(s):  
Weihua Xu ◽  
Zhiyun Ouyang ◽  
Andres Vina ◽  
Hua Zheng ◽  
Jianguo Liu ◽  
...  
Keyword(s):  
Mountain Range ◽  
Giant Pandas ◽  
Conservation Plan
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