THE INFLUENCE OF SODIUM-BICARBONATE AND SULFUR AMINO-ACIDS ON THE PERFORMANCE OF BROILERS AT MODERATE AND HIGH-TEMPERATURES

被引:42
作者
BALNAVE, D
OLIVA, AG
机构
来源
AUSTRALIAN JOURNAL OF AGRICULTURAL RESEARCH | 1991年 / 42卷 / 08期
关键词
BROILERS; SODIUM BICARBONATE; HIGH TEMPERATURES;
D O I
10.1071/AR9911385
中图分类号
S [农业科学];
学科分类号
09 ;
摘要
Supplements of sodium bicarbonate (NaHCO3) added to the diet or drinking water of finishing broilers (3-6 weeks of age) improved food intake, live weight gain and food efficiency at high (30-degrees-C), but not at moderate (21-degrees-C), temperatures. The improved performance was not related to increases in amino acid digestibilities which were reduced in birds kept at 30-degrees-C. Increased consumption of drinking water appears to be a major prerequisite for the improved performance at high temperatures. The methionine:total sulfur amino acid (TSAA) ratio of the diets also influenced broiler performance at 30-degrees-C with ratios of 0.43 and 0.55 giving superior growth and food conversion to a ratio of 0.62. The intake of drinking water and the water:food intake ratio were significantly reduced at the dietary methionine:TSAA ratio of 0.62, the effect being significant when the drinking water contained NaHCO3.
引用
收藏
页码:1385 / 1397
页数:13
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