Effects of Guanidinoacetic Acid Supplementation to Broiler Diets With Varying Energy Content

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis

Jaroslav Heger¹  Jiří Zelenka¹  David Hampel²  Carlos de la Cruz³  Martin Lešták³  Vlastislav Machander⁴ 

[1] Department of Animal Nutrition and Forage Production, Mendel University in Brno, Zemědělská 1, 613 00 Brno, Czech Republic;Department of Statistics and Operation Analysis, Mendel University in Brno, Zemědělská 1, 613 00 Brno, Czech republic;Evonik Industries AG, 10 A539, Rodenbacher Chaussee 4, 63457 Hanau-Wolfgang, Germany;International Poultry Testing Station, Ústrašice 63, 390 02 Tábor, Czech Republic;

关键词: guanidinoacetic acid;    energy;    broiler;    feed intake;    weight gain;    feed conversion;   

DOI  :  10.11118/actaun201462030477

来源: DOAJ

【 摘 要 】

An experiment was conducted to determine the response of broiler chickens to guanidinoacetic acid (GAA) added to diets with different energy levels during fattening to 35 days of age. Ross 308 male chicks were allotted to 10 treatments, each consisting of six replicates of 140 birds/pen. Five maize-soyabean meal isonitrogenous diets with decreasing AMEn levels (100, 99, 98, 97 and 96% of requirement) with or without supplements of 0.6 g/kg CreAMINO® containing a minimum of 96% GAA were formulated. The criteria of response were feed intake, body weight gains, feed conversion ratio and carcass, breast meat, leg meat and abdominal fat yields. Supplementation of broiler diets with 0.06% GAA resulted in a significant (P < 0.05) decrease in voluntary feed intake. With decreasing AMEn level, voluntary feed intake and consequently protein and amino acid intakes increased which was manifested by improved growth performance (P < 0.01). GAA supplements significantly (P < 0.001) improved feed conversion ratio and efficiency of AMEn utilization and significantly (P < 0.01) increased breast meat yield. With decreasing AMEn level, the effects of GAA supplementation tended to diminish.

【 授权许可】

Unknown