Bone parameters for broilers fed diets with phytase and low phosphorus and crude protein levels

被引:1
作者
Vaz, A. C. N. [1 ]
Albuquerque, R. [2 ]
Brisola, M. L. [3 ]
Donato, D. C. Z. [4 ]
Garcia, P. D. S. R. [4 ]
机构
[1] Univ Sao Paulo, Fac Zootecnia & Engn Alimentos, Sao Paulo, Brazil
[2] Univ Sao Paulo, Fac Med Vet & Zootecnia, Sao Paulo, Brazil
[3] Pontificia Univ Catolica Minas Gerais, Fac Med Vet, Pocos De Caldas, MG, Brazil
[4] FCAV Unesp, Jaboticabal, SP, Brazil
关键词
poultry; calcium; enzyme; ashes; tibia; MICROBIAL PHYTASE; RICE BRAN; CHICKS; PERFORMANCE;
D O I
10.1590/S0102-09352013000600034
中图分类号
S85 [动物医学(兽医学)];
学科分类号
0906 ;
摘要
504 (five hundred four) 1 day old male chicks from a commercial broiler line (Ag Ross 308) were used, distributed in 12 treatments, with 6 replicates per treatment. The experimental design was casually blocked and treatments were organized in a 2x2x3 factorial arrangement: two available phosphorus levels (0.45 and 0.34%), two phytase inclusion levels (0 and 1200 FTU/kg) and three crude protein levels (22.5; 20.5 and 18.5%). Tibia calcium percentage was influenced by protein and phosphorus levels in the diet, when using phytase. Tibia ash levels showed a linear effect when enzymes were added and showed a quadractic effect without it, and the higher value was observed with 22.5% crude protein in the diet. With higher phosphorus levels a linear effect was observed between crude protein in the diet and tibia ash weights, as a higher protein level had lower tibia ash weight.
引用
收藏
页码:1831 / 1835
页数:5
相关论文
共 13 条
[11]   Available phosphorus requirement of male and female broilers from 1 to 21 days of age [J].
Runho, RC ;
Gomes, PC ;
Rostagno, HS ;
Albino, LFT ;
Lopes, PS ;
Pozza, PC .
REVISTA BRASILEIRA DE ZOOTECNIA-BRAZILIAN JOURNAL OF ANIMAL SCIENCE, 2001, 30 (01) :187-196
[12]  
SAS, 1990, US GUID STAT
[13]  
Zanini SF, 1998, ARQ BRAS MED VET ZOO, V50, P611