43,579 research outputs found

    Mathematical modelling in animal nutrition: a centenary review

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    A centenary review presents an opportunity to ponder over the processes of concept development and give thought to future directions. The current review aims to ascertain the ontogeny of current concepts, underline the connection between ideas and people and pay tribute to those pioneers who have contributed significantly to modelling in animal nutrition. Firstly, the paper draws a brief portrait of the use of mathematics in agriculture and animal nutrition prior to 1925. Thereafter, attention turns towards the historical development of growth modelling, feed evaluation systems and animal response models. Introduction of the factorial and compartmental approaches into animal nutrition is noted along with the particular branches of mathematics encountered in various models. Furthermore, certain concepts, especially bioenergetics or the heat doctrine, are challenged and alternatives are reviewed. The current state of knowledge of animal nutrition modelling results mostly from the discernment and unceasing efforts of our predecessors rather than serendipitous discoveries. The current review may stimulate those who wish for greater understanding and appreciation

    Small Animal Nutrition

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    In general, the body needs daily intakes of a proper proportion of carbohydrate and fat for energy, amino acids for the synthesis of tissue proteins, and vitamins for special structures. In addition, it requires inorganic ions and water for the ionic environment, and inorganic ,elements such as iron, cobalt, manganese and copper, for organic combination. Thus, if dietary therapy emphasizes only one or two, or anything less than the whole group of ingredients needed daily, then the clinician is depending upon the body reserves to correct the deficiency. Similarly, a study of any particular ingredient such as the protein component must be done with a diet which supplies, to the best of our knowledge, all other essential ingredients

    Fluorine in animal nutrition

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    Exogenous Enzymes in Animal Nutrition- Benefits and Limitations

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    The use of exogenous enzymes in animal nutrition dates back to the mid-1920s, however, nowadays the development of interdisciplinary sciences exploiting molecular methods create new opportunities and deliver new tools to assess effectiveness of their utilization. The proper use of enzymes in animal nutrition allows to obtain maximum benefit from their action not only for the animals, but also for the environment

    Grand Challenge in Animal Nutrition

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    Feeding

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    Animal nutrition and feed science are the main scientific promote for today’s modern breeding and feed industries. Animal nutrition is the most important factor affecting performance, reproduction and products quality. Improving productivity through better nutrition is determined by some interrelated considerations such as the availability of nutrients, type of feeding system and the level of feeding management. Poor nutrition affects growth, reproduction and immune system. Besides, feed has financially the largest share in animal production, irrespective of species and production system. Feed accounts for 65–75% of total cost of livestock production. This chapter provides the fundamental concepts of animal nutrition a general awareness on nutrition and feeding of livestock (swine, poultry, beef and dairy cattle, sheep and goat). Besides, feed is financially the single most important element of animal production in most production system

    4-H Animal Nutrition : Extension Circular 2-11-66

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    Booklet discussing all aspects of animal nutrition
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