Continuous multi-phase feeding of broiler chickens
| Title: | Continuous multi-phase feeding of broiler chickens |
| Author: | Nasril |
| Abstract: | Continuous multi-phase feeding of broiler chickens was evaluated to optimize broiler nutrition and minimize environmental impact related to excess nitrogen in poultry manure. Four experiments were conducted. Experiments 1 and 2 studied effects of continuous multi-phase feeding during a 3-week starting period using battery brooders while experiments 3 and 4 evaluated multi-phase feeding during a traditional 7-week growing period using both battery brooders and floor pens. In the first and second experiments, the nutrient content of the multi-phase diets was changed every 24 hours in comparison to single-phase feeding. Results indicated that during the starter period, continuous multi-phase feeding had no significant influence on feed consumption, daily gain, feed to gain ratio or fecal nitrogen. In the third and fourth experiments, a four phase industry type broiler feeding program was compared to intensive multi-phase feeding programs created by linearly blending three different diets based on typical industry nutrient values and a commercial nutrient modeling computer program (EFG Natal®). In both intensive multi-phase feeding programs, the diets were changed every three days over a 7-week growth period. Broilers in experiment 3 were raised in Petersime battery brooders to primarily access nitrogen balance while birds in experiment 4 were raised in a floor pen on pine shaving litter to resemble commercial broiler production. The results indicated that intensive multi-phase feeding improved body weight gain and feed to gain ratio only in weeks 5 and 6 but not during the overall 7-week period. Nitrogen excretion and nitrogen retention were unaffected by the intensive multi-phase feeding systems. Economic analysis indicated that intensive multi-phase feeding programs could potentially lower feed costs per kilogram of gain. However, the high cost of implementing a continuous multi-phase feeding system may not justify the relatively small gain in lower feed cost per kilogram of gain. In conclusion, continuous multi-phase feeding of broiler chickens using corn-soy diets does not appear to be justified by either increased performance or reduced nitrogen excretion. |
| Publisher: | Texas A&M University |
| Subject: |
multi-phase feeding
broilers nitrogen |
| URI: | http://hdl.handle.net/1969.1/1640 |
| Date: | 2003-12 |
Citation
(2003).
Continuous multi-phase feeding of broiler chickens.
Doctoral dissertation,
Texas A&M University.
Texas A&M University. Available electronically from
http : / /hdl .handle .net /1969 .1 /1640.
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| Files | Size | Format | View |
|---|---|---|---|
| etd-tamu-2003C-POSC-Nasril-1.pdf | 2.274Mb |
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Electronic Theses, Dissertations, and Records of Study (2002-present) [10425]
Electronic Theses, Dissertations, and Records of Study Collection
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