Author/Authors :
Manopriya, S. Department of Livestock and Avian Science - Faculty of Livestock - Fisheries and Nutrition, Wayamba University of Sri Lanka, Makandura, Gonawila (NWP), Sri Lanka , Aberathna, A.A.A.U. Department of Livestock and Avian Science - Faculty of Livestock - Fisheries and Nutrition, Wayamba University of Sri Lanka, Makandura, Gonawila (NWP), Sri Lanka , Satharasinghe, D.A. Department of Basic Veterinary Science - Faculty of Veterinary Medicine and Animal Science - University of Peradeniya, Peradeniya, Sri Lanka , Jayasooriya, L.J.P.A.P. Insititute of Science - University of Peradeniya, Peradeniya, Sri Lanka , Mantilaka, M.M.M.G.P.G. Insititute of Science - University of Peradeniya, Peradeniya, Sri Lanka , Fernando, C.A.N. Department of Nano Science Technology - Faculty of Technology - Wayamba University of Sri Lanka, Kuliyapiya, Sri Lanka , Jayaweera, B.P.A. Department of Livestock and Avian Science - Faculty of Livestock - Fisheries and Nutrition, Wayamba University of Sri Lanka, Makandura, Gonawila (NWP), Sri Lanka , Weerathilake, W.A.D.V. Department of Livestock and Avian Science - Faculty of Livestock - Fisheries and Nutrition, Wayamba University of Sri Lanka, Makandura, Gonawila (NWP), Sri Lanka , Prathapasinghe, G.A. Department of Livestock and Avian Science - Faculty of Livestock - Fisheries and Nutrition, Wayamba University of Sri Lanka, Makandura, Gonawila (NWP), Sri Lanka , Liyanage, J.A. Department of Chemistry - Faculty of Science - University of Kelaniya, Sri Lanka , Premarathne, J.M.K.J.K. Department of Livestock and Avian Science - Faculty of Livestock - Fisheries and Nutrition, Wayamba University of Sri Lanka, Makandura, Gonawila (NWP), Sri Lanka
Abstract :
Nutrition is a crucial factor in animal production. Feeding animals with a well-balanced diet is beneficial economically and promotes animal welfare. Mineral supplements are the third most costly component in animal feed. Phosphorus (P) is one of the key minerals responsible for skeletal development, energy me-tabolism, cell signaling and is a constituent of nucleotides. An animal’s P requirement varies with species, production trait, age and management practices. Dietary P should meet the growth, maintenance, and pro-duction requirements of animals. Deficiency in dietary P causes severe impacts on skeletal development and growth in young animals and long-term deficiencies can impact both animal welfare and production parameters. Overfeeding of P can lead to nutritional disorders related to Ca metabolism. Therefore, main-taining the balance between Ca and P in the diet is crucial in feeding. Excess P is not retained in the body and excreted with faecal matter. Through the homeostasis process, animals are able to balance the mineral composition in their bodies. The primary P source in the diet comes as organic P from plants and inorganic P from supplements. The bioavailability of the P varies within animals according to physiological and func-tional variabilities. Understanding the physiology as well as functional and production variabilities in ani-mals is beneficial in managing the economic and environmental aspects of animal husbandry.
