Possibility of amino acid nutrition in broiler

Abstract

The consumption of poultry meats exceeds 50% of total meat consumption. With the outbreak of bovine spongiform encephalopathy and foot and mouth disease, the consumption of poultry meat is set to increase. The use of meat bone meal derived from cattle and pigs is prohibited. Therefore, plant protein has to be used more frequently and the importance of the study of amino acid nutrition is increasing. In order to improve dietary efficiency, it is necessary to elucidate the exact amino acid requirements of poultry. The amino acid requirements are not constant and are affected by various factors. By using the plasma amino acid concentration as a parameter, it is possible to predict the amino acid requirements within a short period using a small number of animals repeatedly. By satisfying the amino acid requirements through supplementing crystalline amino acids, it is possible to reduce dietary protein and excretory nitrogen simultaneously. However, when the dietary protein is reduced, the abdominal fat tends to increase. This is solved by deciding the optimum dietary protein level, but it is difficult to control the taste of poultry meat by dietary amino acids.

Níveis de lisina digestível da ração e temperatura ambiente para frangos de corte em crescimento

“…Diversos autores (Baker & Han, 1994;Rostagno et al, 1999;Costa et al, 2001;Ishibashi & Yonemochi, 2002;Borges et al, 2002) têm relatado que os níveis ótimos de aminoácidos em rações para frangos de corte podem variar em razão de fatores como linhagem, idade, sexo, níveis nutricionais, fontes de energia e proteína, desafios imunológicos, manejo e temperatura ambiente.…”

“…Em estudos nutricionais utilizando rações à base de milho e farelo de soja, a lisina tem sido considerada o segundo aminoácido limitante para o crescimento e desenvolvimento de frangos de corte (Kidd et al, 1997;Costa et al, 2001;Ishibashi & Yonemochi, 2002;Lana et al, 2005). Sabe-se também que a lisina é um aminoácido essencial cujo principal papel fisiológico é a síntese protéica (tecido muscular) e que está envolvida, em menores proporções, em outros processos metabólicos (Baker & Han, 1994;Costa et al, 2001;Amarante Jr. et al, 2005;Takeara et al, 2005;Lana et al, 2005).…”

Digestible lysine for broiler chickens with lower genetic potential grown on free-range system

“…Both deficiency and excess of amino acids, particularly lysine in this case, may impair the performance of the chickens. The body weight of poultry rises as the level of lysine rises in the diet, until an optimum level is achieved; after that, there is a reduction in body weight (Ishibashi and Yonemochi, 2002).…”

Effects of replacing fish meal with mussel (Cristaria plicata) meat on growth, digestive ability, antioxidant capacity and hepatic IGF-I gene expression in juvenile Ussuri catfish (Pseudobagrus ussuriensis)

“…The high digestible protein of most animal feed makes them possible to formulate low FM, high nutrient concentrations of fish feed. In the past, the feedstuffs of animal origin were not generally used in aquaculture feed over concerns about their poor digestibility and unstable quality, especially about bovine spongiform encephalopathy and foot‐and‐mouth disease through meat meal‐based animal feed that are most frequently discussed by the general public (Bellagamba, Valfre, Panseri, & Moretti, ; Ishibashi & Yonemochi, ; Wilesmith, Ryan, & Hueston, ). Today, animal proteins have successfully and safely replaced or partially replaced FM, such as feather meal and meat and bone meal (Abwao, Safina, Ondiba, Ogello, & Obiero, ; Ai et al, ; Begum, Chakraborty, Zaher, Abdul, & Gupta, ).…”