Artigo
Exigência de treonina digestível para codornas de corte no período de 15 a 35 dias de idade
Fecha
2013-04-01Registro en:
Arquivo Brasileiro de Medicina Veterinaria e Zootecnia, v. 65, n. 2, p. 505-512, 2013.
0102-0935
1678-4162
10.1590/S0102-09352013000200029
S0102-09352013000200029
WOS:000319983700029
2-s2.0-84877896114
2-s2.0-84877896114.pdf
Autor
Universidade Estadual de Maringá (UEM)
Universidade Estadual do Oeste do Paraná (UNIOESTE)
Universidade Estadual Paulista (Unesp)
Zootecnista autônomo
Resumen
The digestible threonine (DThr) requirements for meat quails (Coturnix coturnix sp) during growing phase from 15 to 35 days of age were estimated, using 1,020 quails with 15 days of age, of both sexes, distributed in a completely randomized design, with six levels of digestible threonine-0.93; 1.00; 1.07; 1.14; 1.21 and 1.28% in diet, five replications and 34 quails per experimental unit. There was no effect on performance variables, carcass yield and chemical composition and nitrogen balance with the studied increase in digestible threonine levels. There was a linear increase in threonine intake and feed cost per kilogram of body weight gain with increasing levels of digestible threonine. It was concluded that the best level of threonine evaluated was sufficient to meet the requirements of meat quails, in the period from 15 to 35.