{"id":5960,"date":"2021-07-28T13:35:21","date_gmt":"2021-07-28T11:35:21","guid":{"rendered":"https:\/\/www.globalvetslab.com\/?p=5960"},"modified":"2021-07-28T14:10:46","modified_gmt":"2021-07-28T12:10:46","slug":"amino-acids-in-diets-for-broilers","status":"publish","type":"post","link":"https:\/\/www.deltalabs.online\/en\/amino-acids-in-diets-for-broilers\/","title":{"rendered":"Amino acids in diets for broilers"},"content":{"rendered":"\n

Amino acids: definition and classification<\/h3>\n\n\n\n

Amino acids are organic compounds that form proteins. They also have other essential functions related with nervous transmission or the synthesis of other compounds that are essential for the organism. Their structure has the amino (-Nh2<\/sub>) and carboxyl (-COOH) functional groups.<\/p>\n\n\n\n

Amino acids can be classified depending on whether the organism can synthesize them or not. Essential amino acids <\/strong>are the ones that cannot be synthesized and need to be included in the diet. Other amino acids, despite they are not essential, the organism cannot produce enough of them, hence they need to be supplied with the diet, too.<\/p>\n\n\n\n

Essential amino acids <\/strong>for broiler chickens are lysine, methionine, threonine, tryptophan, isoleucine, histidine, valine, phenylalanine, and arginine. Glycine <\/strong>can be considered essential in young broilers, and cysteine and tyrosine are considered semiessential<\/strong>, <\/strong>since they can be synthesized from methionine and phenylalanine, respectively (Ravindran 2014). The most limiting amino acids are methionine and threonine, which means that their inclusion levels in the diet need to be meticulously evaluated.<\/p>\n\n\n\n

\"Threonine<\/p>\n\n\n\n

Amino acid requirements in broilers<\/h3>\n\n\n\n

Amino acid requirements vary depending on the breed and growth stage. <\/strong>They are usually expressed as total and or digestible amino acids<\/strong>. It is highly recommended to use the latter, as it considers the final availability of these compounds, which is the amount of amino acid that will reach the organism after it is absorbed in the digestive tract.<\/p>\n\n\n\n

Table 1. Amino acid requirements for two broiler commercial lines.<\/strong><\/strong><\/a><\/p>\n\n\n\n

\"Amino<\/p>\n\n\n\n

Lys = lysine; Met+Cys = methionine + cysteine Thr = threonine; Val = valine; Ile = isoleucine; Arg = arginine; Tph = tryptophan. Sources <\/em>(ROSS Especificaciones de nutrici\u00f3n 2019) and <\/em>(Cobb-Vantress 2018).<\/em><\/a><\/em><\/p>\n\n\n\n

Feed formulations based on ideal protein<\/h3>\n\n\n\n

Feed formulas used in poultry production are increasingly centered in the ideal protein, a parameter that considers the exact amino acid supply <\/strong>to meet the maintenance and growing requirements of birds. This means that these diets supply the exact amount of each amino acid, so that none of them is administered in excess compared to the others. In short, the diet\u2019s amino acid profile is completely adjusted to what animals need.<\/p>\n\n\n\n

This change is caused by three main reasons: the increasing price of protein sources <\/strong>compared to energy sources, the greater availability of synthetic amino acids <\/strong>and, in some countries, the limitation of nitrogen excretion <\/strong>in the environment, as ideal protein optimizes nitrogen utilization.<\/p>\n\n\n\n

Steps to formulate diets based on ideal protein<\/h3>\n\n\n\n

The protein-based ingredients have an amino acid profile that can be more or less similar to the bird\u2019s requirements, but there is no ideal ingredient in terms of the amino acid profile<\/strong>, so the only way to meet the requirements in an exact manner is to use industrial amino acids. To do so, follow these steps:<\/p>\n\n\n\n

  1. Use high-quality protein-based ingredients <\/strong>with an amino acid profile that is similar to the animal\u2019s requirements. The nutrient composition of these ingredients must be known before making the feed formula.<\/li>
  2. Supplement the feed with industrial amino acids <\/strong>until all the requirements are met.<\/li><\/ol>\n\n\n\n

    \"Ideal<\/p>\n\n\n\n

    Sources: NRC (1994) and <\/em>Kalinowski Echegaray (2005). Generally, lysine is used as the reference and the other essential amino acid levels are expressed as a percentage of lysine.<\/em><\/em><\/a><\/p>\n\n\n\n

    How can we help you?<\/h3>\n\n\n\n

    In Delta Labs<\/a>, we offer the feed formulation and analysis <\/strong>service to evaluate and optimize the diets\u2019 amino acid supply and adjust it to the ideal amino acid profile <\/strong>for the target species. This way, we help to optimize productive performance at the minimum cost.<\/p>\n\n\n\n

    To use the service, please contact us through our webpage www.globalvetslab.com<\/a> or email at info@globalvetslab.com<\/a><\/p>\n\n\n\n

    Bibliography<\/h5>\n\n\n\n

    Cobb-Vantress. 2018. \u201cCOBB 500 Broiler Performance & Nutrition Supplement.\u201d : 10.<\/em><\/p>\n\n\n\n

    Cojocari, Dan (Princess Margaret Cancer Centre University fo Toronto). 2010. \u201c[Picture] Amino Acids.\u201d Wikipedia – Amino Acids. https:\/\/ca.wikipedia.org\/wiki\/Amino\u00e0cid#\/media\/Fitxer:Molecular_structures_of_the_21_proteinogenic_amino_acids.svg (July 6, 2021).<\/em><\/p>\n\n\n\n

    Kalinowski Echegaray, Juan. 2005. \u201cLa Soja Integral En La Alimentaci\u00f3n Av\u00edcola.\u201d : 1\u201312. http:\/\/www.wpsa-aeca.es\/aeca_imgs_docs\/05_06_51_SojaIntegral.pdf.<\/em><\/p>\n\n\n\n

    Ravindran, Velmurugu. 2014. \u201cDisponibilidad de Piensos y Nutrici\u00f3n de Aves de Corral En Pa\u00edses En Desarrollo.\u201d Organizaci\u00f3n de las Naciones Unidas para la alimentaci\u00f3n y la agricultura. Revisi\u00f3n del desarrollo agr\u00edcola.: 1\u20135. http:\/\/www.fao.org\/3\/a-al703s.pdf.<\/em><\/p>\n\n\n\n

    \u201cROSS Especificaciones de Nutrici\u00f3n.\u201d 2019. : 4. https:\/\/es.aviagen.com\/assets\/Tech_Center\/BB_Foreign_Language_Docs\/Spanish_TechDocs\/RossBroilerNutritionSpecs2019-ES.pdf.<\/em><\/p>\n\n\n\n

    <\/p>\n","protected":false},"excerpt":{"rendered":"

    Amino acids: definition and classification Amino acids are organic compounds that form proteins. They also have other essential functions related with nervous transmission or the synthesis of other compounds that are essential for the organism. Their structure has the amino … Read More<\/a><\/p>\n","protected":false},"author":52,"featured_media":5970,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13,7],"tags":[],"yoast_head":"\nUso de amino\u00e1cidos en dietas para pollos de engorde<\/title>\n<meta name=\"description\" content=\"Los amino\u00e1cidos son compuestos org\u00e1nicos que son la base de las prote\u00ednas. 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