Effect of potassium chloride supplementation in drinking water on broiler performance under heat stress conditions

被引:50
作者
Ahmad, T. [1 ]
Khalid, T. [4 ]
Mushtaq, T. [5 ]
Mirza, M. A. [5 ]
Nadeem, A. [2 ]
Babar, M. E. [2 ]
Ahmad, G. [3 ]
机构
[1] Pir Mehr Ali Shah Arid Agr Univ, Fac Vet & Anim Sci, Rawalpindi 46300, Pakistan
[2] Univ Vet & Anim Sci, Fac Anim Prod & Technol, Lahore 54000, Pakistan
[3] Al Watnia Poultry, Buraydah 51431, Saudi Arabia
[4] Pir Mehr Ali Shah Arid Agr Univ, Dept Zool, Rawalpindi 46300, Pakistan
[5] Univ Agr Faisalabad, Inst Anim Nutr & Feed Technol, Faisalabad 38040, Pakistan
关键词
potassium chloride; drinking water; heat stress; broiler;
D O I
10.3382/ps.2007-00299
中图分类号
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号
0905 [畜牧学];
摘要
The effect of water supplementation of KCl on performance of heat-stressed Hubbard broilers was evaluated in the present experiment. The 3 experimental treatments (i. e., control, 0.3 and 0.6% KCl) were allocated to 3 replicates of 15 birds each. The control group was kept on dugout tap water, whereas the other 2 groups were supplied water supplemented with 0.3 and 0.6% KCl (wt/vol) by supplementing 3 and 6 g of KCl, respectively, per liter of drinking water. Broilers were provided ad libitum access to feed and water for the experimental period of 7 to 42 d of age and kept in open-sided house. The birds were reared under continuous thermostress (minimum 28.2 +/- 1.02 and maximum 37.5 +/- 0.78 degrees C) environment. Supplementing drinking water with 0.6% KCl reduced panting-phase blood pH to 7.31 and significantly increased live BW gain by 14.5 (P = 0.036) and 7.9% (P = 0.029) at 28 and 42 d of age, respectively, relative to control. An improved (P = 0.04) feed: gain and lowered body temperature were noted in groups supplemented with 0.6% KCl as compared with control and 0.3% KCl. Enhanced physiological adaptation with 0.6% KCl was evidenced by a more favorable pH during the panting phase in the present study. These findings demonstrated a possibility of better broiler live performance through KCl supplementation under conditions of severe heat stress (35 to 38 degrees C).
引用
收藏
页码:1276 / 1280
页数:5
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