ARTICLE 76 FEED & ADDITIVE MAGAZINE April 2023 INTRODUCTION The efficiency with which dietary protein is used by the pig depends of the digestibility of protein and its constituent amino acids (AA) and the content and balance among AA in relation to the animal’s requirement. Amino acids given in excess will be delaminated and the resulting urea will be excreted in the urine. Finding a good balance between AA supply and AA requirement is important for different reasons. Protein is a relatively expensive nutrient and many countries rely on imported protein sources for animal feeding. Also, the inefficient use of dietary protein contributes to nitrogen excretion and the environmental impact of animal production is a problem in different pig producing areas in the world. With the increasing availability of crystalline AA such as L-Lys, DL-Met (or analogues of L-Met), L-Thr, L-Trp, and L-Val, it is now possible to formulate low-protein diets with a well-balanced AA content. However, reducing the protein content in the diet whilst maintaining optimal animal performance is possible only if accurate knowledge exists about the requirements for all Amino acid. WHAT IS IDEAL PROTEIN The concept of "ideal protein" (protein with an optimal EAA pattern that precisely meets the physiological needs of animals), which was originally proposed in the 1950s but ignored AASAs, is not ideal in animal nutrition. Ideal diets must provide IDEAL PROTEIN CONCEPT IN POULTRY AND PIGS “It can be stated that – although there are different methods to determine an ideal protein – available results are fairly similar. Apparent differences could be attributed to the method applied for ideal protein determination but also to interactions between amino acid requirements and other animal related and/or environmental factors. The most important factors are age, climate, management as well as genetic factors like sex or strain.” Mohit Bharadwaj, Ph.D Scholar Department of Animal Nutrition, College of Veterinary Science and Animal Sciences, GBPUAT, Pantnagar, Uttarakhand, India Shivangi Singh, M.Vsc Scholar Department of Animal Nutrition, College of Veterinary Science and Animal Husbandry Rewa, NDVSU, Jabalpur M.P, India
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