Bioavailability Determination of Lysine Sulfate and Lysine HCl with Broiler Chickens

Revista Brasileira de Zootecnia

Rostagno, Horacio Santiago¹  Rodrigueiro, Ramalho José Barbosa¹  Neme, Rafael²  Toledo, Rodrigo Santana¹  Albino, Luiz Fernando Teixeira¹ 

[1] Universidade Federal de Viçosa;Universidade Estadual Paulista, Jaboticabal

关键词: bioavailability;    broiler;    grow trial;    lysine     IntroduçãoOs frangos de corte comerciais são aves que apresentam crescimento rápido e de maior eficiência já produzidos pelos esforços combinados entre o homem e a natureza;   

DOI  :  10.1590/S1516-35982001000700013

学科分类：兽医学

来源: Universidade Federal de Vicosa

【 摘 要 】

- With the objective of determine the bioavailability of two lysine sources (lysine HCl and lysine sulfate), by a growth trial, 840 one day old male broiler chicks were placed in 56 boxes. Two basal diets were formulated to supply the birds nutritional requirements, one for the starting and the other for the growing period, respectively, deficient only in lysine, which were supplemented 0,08, 0,16 and 0,24% lysine of both lysine sources. Weight gain, feed intake, feed conversion, carcass yield, legs quarter yield, breast yield, breast meat yield and abdominal fat content were evaluated. Multiple linear regression and the slope ratio technique was used to estimate equations. The bioavailabity of lysine sulfate was obtained as a percentage of lysine HCl considered as 100% available. The equations that best estimated the bioavailability of the lysine sulfate (X2) related to lysine HCl (X1) were: Y = 544,72 + 439,62 X1 + 475,84 X2, R2 = 0,90, for weight gain (1 to 21 days of age); Y = 1824,63 + 1469,18 X1 + 1381,33 X2, R2 = 0,85, for weight gain from 01 to 42 days of age;11 Y = 1,9623 - 0,9043X1 ¾1,0235 X2, R2 = 0,83, for feed conversion (1 to 21 days of age); Y = 0,3766 + 0,5320 X1 + 0,4986 X2, R2 = 0,88, for breast yield (42 days of age) and Y = 0,2565 + 0,4685X1 + 0,4300 X2, R2 = 0,92 for breast meat yield with 42 days of age. The average bioavailability of lysine sulfate was 100,19%, showing that there was no difference (p > 0.05), in the bioavailability of the two lysine sources studied.

【 授权许可】

CC BY-NC