RESPONSE TO WATER-DEPRIVATION BY YANKASA EWES UNDER DIFFERENT PHYSIOLOGICAL STATES

被引：14

作者：

AGANGA, AA

UMUNNA, NN

OYEDIPE, EO

OKOH, PN

ADUKU, AO

机构：

[1] Department of Animal Science, Faculty of Agriculture, Ahmadu Bello University, Zaria

[2] Department of Animal Reproduction, National Animal Production and Research Institute, Ahmadu Bello University, Zaria

来源：

SMALL RUMINANT RESEARCH | 1990年 / 3卷 / 02期

关键词：

D O I：

10.1016/0921-4488(90)90086-L

中图分类号：

S8 [畜牧、动物医学、狩猎、蚕、蜂];

学科分类号：

0905 ;

摘要：

Thirty-six Yankasa ewes, used in a 50-day study, were 10 months old, non-pregnant and dry (12), 15 months old and 3-months pregnant (12), or 18 months old, lactating and non-pregnant (12). Three experimental watering interval treatments (1, 2, 3), daily (24-h interval), 48 h and 72 h, were conducted in the early, cool, dry season of September to November. Significant differences (P < 0.05) were observed in water intake for non-pregnant and dry, pregnant, and lactating ewes: 113 ml/kg0.73, 118 ml/kg0.73 and 188 ml/kg0.73 for 24 h; 91 ml/kg0.73, 96 ml/kg0.73 and 152 ml/kg0.73 for 48 h; and 77 ml/kg0.73, 89 ml/kg0.73 and 112 ml/kg0.73 for 72 h watering intervals, respectively. Feed intake of ewes dropped with increased water deprivation. Body weight decreased with prolonged watering intervals. Jaw movements during rumination were significantly reduced with increased watering intervals. Respiratory rates were less and rectal temperatures higher with longer watering intervals. © 1990.

引用

页码：109 / 115

页数：7

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