Abstract
Phosphorus (P) is an essential nutrient for livestock but its efficiency of utilization is below 40%, contributing to environmental issues. In this review, we summarize recent approaches to optimize P availability in livestock diets and improve its utilization efficiency. Phase feeding could potentially reduce P excretion by 20%. Addition of phytase enzymes to diets increased P availability from 42 to 95%. Low phytate transgenic plants and transgenic animals increased P availability by 14% and 52-99%, respectively. In practice, a combination of phase feeding and enzymes has the highest potential for P reduction but legislation and ethics implications will prevent using transgenic animals in the short term. Functional and nutritional genomics may provide tools to improve efficiency in the future.
Original language | English |
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Journal | Current Opinion in Biotechnology |
Volume | 23 |
Issue number | 6 |
Pages (from-to) | 872-877 |
Number of pages | 6 |
ISSN | 0958-1669 |
DOIs | |
Publication status | Published - Dec 2012 |
Externally published | Yes |
Keywords
- 6-Phytase
- Animal Feed
- Animals
- Animals, Genetically Modified
- Diet
- Genomics
- Livestock
- Phosphates
- Phosphorus, Dietary
- Phytic Acid