给肉鸡补充碳酸氢钠和碳酸氢钾在高温环境下可能会导致生长性能不佳。

Sodium bicarbonate and potassium bicarbonate supplements for broilers can cause poor performance at high temperatures.

Hayat J, Balnave D, Brake J

University of Sydney, Australia.

Br Poult Sci. 1999 Jul;40(3):411-8. doi: 10.1080/00071669987539.

Abstract

Supplements of between 2 and 8 g of sodium bicarbonate (NaHCO3)/l in drinking water provided between 21 and 49 d of age to broilers at 31 degrees C increased growth after 35 d of age and food intake after 42 d of age compared to unsupplemented controls. The most consistent responses were observed with 2 g NaHCO3/l. 2. Differences in weekly water intakes with different concentrations of NaHCO3 in the drinking water did not equate with variations in weekly food intake and growth. 3. Unexpected high mortality from dehydration and nephrosis was observed with a 10 g NaHCO3/l supplement. This mortality was associated with major changes in blood acid-base balance and plasma electrolyte concentrations. 4. Dietary supplements of NaHCO3 gave significantly better food conversion and numerically better growth in broilers at 31 degrees C than supplements of potassium bicarbonate (KHCO3) providing similar dietary concentrations of bicarbonate. 5. Supplements of NaHCO3 were more toxic to broiler chickens when supplied in the drinking water than in the diet. This appeared to be related to the intake of sodium and alterations to cellular membrane ionic potential.

摘要

在31摄氏度下，给21至49日龄的肉鸡饮用水中添加2至8克碳酸氢钠（NaHCO₃）/升，与未添加的对照组相比，可使35日龄后的生长速度加快，42日龄后的采食量增加。添加2克NaHCO₃/升时观察到的反应最为一致。2. 饮用水中不同浓度的NaHCO₃导致的每周饮水量差异与每周采食量和生长变化并不等同。3. 补充10克NaHCO₃/升时观察到意外的因脱水和肾病导致的高死亡率。这种死亡率与血液酸碱平衡和血浆电解质浓度的重大变化有关。4. 在31摄氏度下，与提供相似膳食碳酸氢盐浓度的碳酸氢钾（KHCO₃）补充剂相比，膳食中添加NaHCO₃能使肉鸡的饲料转化率显著提高，生长速度在数值上也更好。5. NaHCO₃以饮水形式提供时对肉鸡的毒性比以饲料形式提供时更大。这似乎与钠的摄入量以及细胞膜离子电位的改变有关。