关联效应对反刍动物饲料体外估计可利用粗蛋白（uCP）的影响。

The influence of associative effects on the in vitro-estimated utilizable crude protein (uCP) of feeds for ruminants.

作者信息

Zhao Guang-Yong, Li Yuan-Xiao, Ren Jian-Bo, Li Ya-Jun, Guo Dong-Sheng

机构信息

College of Animal Science and Technology, China Agricultural University, Beijing, PR China.

出版信息

Arch Anim Nutr. 2005 Apr;59(2):149-54. doi: 10.1080/17450390512331387954.

DOI:10.1080/17450390512331387954

PMID:16080308

Abstract

Nineteen feed mixtures, formulated with 16 single feeds, were used to study the influence of associative effects on utilizable crude protein (uCP) of feed mixtures. The in vitro incubation technique of Zhao and Lebzien (2000) was used for uCP determination. It was found that the in vitro-determined uCP (D-uCP) was significantly higher than the weighted uCP (W-uCP) of feed mixtures and there was a significant regressive relationship between W-uCP (x) [g x kg(-1)DM] and D-uCP (y) [g x kg(-1)DM]: y=(0.94 +/- 0.23)x + (18.78 +/- 35.58), r2=0.49, n=19, p < 0.01. It was concluded that there exist significant associative effects of feed mixtures on uCP. In formulation of rations for ruminants the D-uCP should be used instead of W-uCP. Because of the low regression coefficient of the equation above, the D-uCP cannot be estimated from the W-uCP.

摘要

使用由16种单一饲料配制的19种饲料混合物，研究组合效应对饲料混合物可利用粗蛋白（uCP）的影响。采用Zhao和Lebzien（2000）的体外培养技术测定uCP。结果发现，体外测定的饲料混合物uCP（D-uCP）显著高于加权uCP（W-uCP），且W-uCP（x）[g x kg（-1）DM]与D-uCP（y）[g x kg（-1）DM]之间存在显著的回归关系：y =（0.94±0.23）x +（18.78±35.58），r2 = 0.49，n = 19，p <0.01。得出结论，饲料混合物对uCP存在显著的组合效应。在反刍动物日粮配方中，应使用D-uCP而非W-uCP。由于上述方程的回归系数较低，无法根据W-uCP估算D-uCP。