COMPARISON OF LABORATORY METHODS FOR PREDICTING DIGESTIBILITY OF HAY IN SHEEP

被引：15

作者：

CARRO, MD

LOPEZ, S

GONZALEZ, JS

OVEJERO, FJ

机构：

[1] Departamento de Producción Animal I, Universidad de León

来源：

SMALL RUMINANT RESEARCH | 1994年 / 14卷 / 01期

关键词：

IN-VITRO DIGESTIBILITY; CELLULASE; IN SACCO;

D O I：

10.1016/0921-4488(94)90003-5

中图分类号：

S8 [畜牧、动物医学、狩猎、蚕、蜂];

学科分类号：

0905 ;

摘要：

Eleven sun-cured hays with a crude protein and neutral-detergent fibre content ranging from 57 to 207 and 428 to 744 g/kg DM, respectively, were studied for the relationship between in vivo DM digestibility (DMD) in sheep and estimates from chemical composition (crude protein content and Van Soest fibre analyses), in vitro Tilley and Terry technique, enzymatic (digestion by cellulase, pepsin + cellulase and neutral-detergent + cellulase), and in situ techniques (potential and effective degradabilities). On the basis of the coefficient of determination (R2) and the residual standard deviation (RSD) of the regression of in vivo DMD on the results from the investigated techniques, the neutral-detergent+cellulase method (R2 = 0.979; RSD = 0.993) and the in situ (effective degradability; R2 = 0.968; RSD = 1.217) methods gave the most precise estimate of DMD. While the in situ technique requires fistulated animals and is difficult to standardize, the neutral-detergent+cellulase method is simple and rapid, and standardized cellulases are commercially available, so that this technique could provide a suitable tool for predicting DMD of hay.

引用

页码：9 / 17

页数：9

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