Evaluation of the effects of supplementation with threonine in broilers from 0 to 3 weeks of age
In order to evaluate the effects of threonine supplementation of diets differing in protein and metabolizable energy content, three experiments were carried out using broiler chicks of 0 to 3 weeks of age raised in electrically heated batteries. Body weight gain, feed consumption and feed efficiency were recorded. In experiment one, a basal diet that contained 0.70% threonine was used and was supplemented with four levels of threonine (0, 0.05, 0.10 and 0.15%) at two levels of metabolizable energy (3.1 and 3.2 Mcal ME/kg). No significant differences were observed among treatments due to either energy or threonine supplementation. In experiment two, sorghum-peanut-corn gluten meal diets of 20 and 22% protein were supplemented with threonine at the same levels used in the previous experiment. The results indicated no difference due to protein (P> .05) but threonine supplementation had significant effects on gain, feed consumption and feed efficiency. The chicks fed the lowest level of threonine (0.70%) gained less and also consumed less feed (P<.01). Birds with the highest level of threonine had the lowest efficiency (P< .01). In the third experiment, sorghum-soybean diets with two levels of protein (20 and 22%) were supplemented with five levels of threonine (0, 0.02, 0.05, 0.07 and 0.09%) for the 20% CP diet or four threonine levels (0, 0.02, 0.04 and 0.06%) for the 22% CP diets. No differences (P>.05) were observed among treatments.
| Main Authors: | , , |
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Asociacion Latinoamericana de Produccion Animal
1993
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| Online Access: | https://ojs.alpa.uy/index.php/ojs_files/article/view/238 |
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