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Animal Nutrition Science by G. Dryden

By G. Dryden

Written for senior undergraduate and graduate scholars, Animal nutrients Science introduces the elemental issues of animal foodstuff, in a remedy which offers with terrestrial animals usually. Addressing a much broader diversity of subject matters than the normal animal food texts, the topics lined contain dietary ecology and the evolution of feeding types, meals (including minerals, supplements and water) and their capabilities, nutrition composition and strategies of comparing meals, mammalian and microbial digestion and the availability of foodstuff, keep an eye on and prediction of foodstuff consumption, quantitative meals and ration formula, equipment of investigating dietary difficulties, dietary genomics, food and the surroundings, and strategies of feed processing and animal responses to processed meals. the various references give you the clinical foundation for the textual content, and provides signposts for the reader to increase their enquiry in themes of interest.

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As suggested by Sues and Reisz (1998) insectivory allowed animals indirect access to plant material as food. True herbivory requires specialized mouth and tooth morphology and a digestive tract which accommodates the symbiotic microorganisms needed to accomplish the digestion of plant cell walls. Evidence from fossil tooth shapes indicates that plant-eating animals first evolved in the late Carboniferous period, about 295 MYA (Sues and Reisz, 1998). We should bear in mind that the identification of fossil animals as herbivores, rather than the pre-evolving carnivores, is by comparing the shapes of fossil teeth with those of modern animals, some evidence from what appears to be fossilized stomach contents, and conjectures based on relationships between body size and the rate of digesta passage and energy requirements of modern animals.

Sheep, cattle, deer). All these animals have a large organ anterior to the gastric (or ‘simple’) stomach where microbial fermentation occurs. This allows them to benefit from the microbial digestion of forage cell walls before food passes into the stomach and lower digestive tract for further digestion. Diagrams of foregut fermenters’ and ruminants’ stomachs are in Hofmann (1973) and Langer (1988). e. they re-chew undigested forage so that they can increase the rate and extent of digestion in the rumen and promote the escape of undigested and possibly indigestible food pieces from the rumen.

American Naturalist 125, 641–672. J. A. (1999) Mammal-like occlusion in conodonts. Paleobiology 25, 58–74. , Poncet, C. L. (2000) Feeding ground and pelleted hay rather than chopped hay to ponies. 1. Consequences for in vivo digestibility and rate of passage of digesta. Animal Feed Science and Technology 87, 117–130. McL. and Bisselling, I. (1999) Mouth structure and dentition of red (Cervus elaphus) and rusa (Cervus timorensis) deer, and implications for nutritional management. A, Stuth, J. W.

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