People are aware of them and they regard Koalas as one of the cutest animal as well. Joeys start feeding on pap from 6th month and onwards while pap is excreted by their mothers after pellets. Other animals, such as humans also have a caecum, but the Koala's is very long (200 cms). The origin of the Marsupial animals goes back to almost 125 million years. All herbivores have larger digestive systems than carnivores, but koalas have the one of the largest digestive systems of any herbivore, relative to their size. Male Koalas have to do a scent marking to attract the female Koalas. Microsomal lauric acid hydroxylase activity and cyanide-insensitive palmitoyl coenzyme A oxidative (CIPCO) activity were examined in koala, tammar wallaby and rat liver. 245-250. Harrop, CJF & Degabriele, R 1976, Australian Journal of Zoology, vol. The Gray koalas natively belong to Australia's Queensland region. On the other hand; the larger food particles which are not fit for digestion are passed into the larger intestine from where they finally reach for its excretion outside the body from rectum and anus. 704-707. The molecular and enzymatic characteristics of CYP4A in koala liver are reported in this study. The identities and amounts of seven metabolites were found: 9- and 7-hydroxycineole, 9- and 7-cineolic acid, 7-hydroxy-9-cineolic acid, 9-hydroxy-7-cineolic acid and 7,9-dicineolic acid. Even though koalas gestation period is very short but it is one of the longest ones within the marsupial mammals. Moreover, deforestation is another reason for Koalas' dehydration. Koalas are also recognized on the basis of their big fluffy ears. Apparent Km values (an inverse measure of affinity) were the same order of magnitude as rat and human AOX enzymes. Koalas have a special fibre-digesting organ called a caecum. The koala’s digestive tract is shown here to be well-suited to the consumption of fibrous Eucalyptus leaves. Koalas of Queensland are smaller. 10, pp. The Koala's digestive system is especially adapted to detoxify the poisonous chemicals in the leaves. The present study revealed that foliage most preferred by captive koalas had higher volatile monoterpenes, which are the most aromatic oil component, and lower sesquiterpenes in their essential oils. If we conclude the overall digestive system of koalas, it looks quite similar to the other animals. 11, pp. This study describes a feeding trial during which ingestion and excretion by four captive koalas fed an exclusive diet of Eucalyptus punctata punctata was examined. They uncharacteristically also have a very loud voice, with males bellowing and snorting during the spring and summer seasons in response to territorial conflict as well as the mating urge. Ullrey, DE, Robinson, PT & Whetter, PA 1981. Loss of koala habitat and koala food trees (eucalyptus leaves) is the leading koala threat. The marsupials have a specialized digestive system able to extract nutrients from the tough plants while processing the toxins that make other animals sick.
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