ENERGY-BALANCE STUDIES WITH GROWING GRANADINA GOATS DURING FASTING AND MAINTENANCE

被引：13

作者：

AGUILERA, JF

LARA, L

MOLINA, E

PRIETO, C

机构：

[1] CSIC, Estación Experimental del Zaidín, Departamento de Fisiología Animal

来源：

SMALL RUMINANT RESEARCH | 1991年 / 5卷 / 1-2期

关键词：

D O I：

10.1016/0921-4488(91)90035-O

中图分类号：

S8 [畜牧、动物医学、狩猎、蚕、蜂];

学科分类号：

0905 ;

摘要：

Six growing female goats of the Granadina breed, aged 6 months, with weights ranging from 13.1 to 21.9 kg were used. Digestibility, nitrogen and energy balance measurements were made during two consecutive experiments with a diet of pelleted luzerne (Medicago sativa) hay, barley and sunflower cake, which was given at about maintenance level. Gas exchange was measured by open-circuit calorimetry. Fasting heat production (FHP) was also determined. By regression analysis of body energy retention (RE) on metabolizable energy (ME) intake, FHP and efficiency of utilization of ME for maintenance (k(m)) were found to be 320 kJ/kg BW0.75/d and 0.760, respectively. Energy requirement for maintenance (ME(m)) was 421 kJ/kg BW0.75/d. It also was concluded that extrapolation of FHP values from sheep can lead to underestimation of energy requirements for maintenance of goats.

引用

页码：109 / 115

页数：7

共 29 条

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