| Effect of decreasing ideal protein levels on performance results and nitrogen efficiency of growing-finishing gilts. | |
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MedLine Citation:
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PMID: 20496857 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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This study examined the effect of decreasing ideal protein concentrations on performance and nutrient efficiency. The experimental diets contained 100%, 90%, 80% or 70% of the ideal dietary protein level (Diet 100%, 90%, 80% and 70%, respectively) estimated in previous experiments with pigs of the same genetic background. The four different treatments were divided among 16 pens of six pigs each. The average initial and final body weight were 20.8 +/- 1.1 and 107 +/- 3 kg, respectively. Three-phase feeding was applied (BW 20-40 kg, 40-70 kg and 70-110 kg). The dietary ileal digestible (ID) methionine + cystine, threonine, tryptophan, isoleucine, valine, and leucine contents expressed as percent of ID lysine were 63, 72, 22, 60, 68, and > 100%, respectively. The lysine to protein ratio was kept constant at 6.8%. Between 21 and 106 kg BW the best performance was achieved on Diet 90%. Diet 70% led to significantly worse results. Although lean meat percentage did not differ, protein content of the carcass was lower on Diet 70% than on Diets 90% and 100%. Decreased protein concentrations increased crude protein efficiency and consequently decreased nitrogen excretion most at the 80% level. If protein varies together with digestible amino acid content, it can be concluded that Diet 80% may be the best choice for the environment and for profitability. If protein content stays at a fixed level, Diet 90% may be the safest choice. |
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Authors:
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Sam Millet; Marijke Aluw?; Marc De Paepe; Dani?l L De Brabander; Monique J Van Oeckel |
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Publication Detail:
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Type: Journal Article; Randomized Controlled Trial |
Journal Detail:
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Title: Archives of animal nutrition Volume: 64 ISSN: 1745-039X ISO Abbreviation: Arch Anim Nutr Publication Date: 2010 Feb |
Date Detail:
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Created Date: 2010-05-25 Completed Date: 2010-06-15 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101222433 Medline TA: Arch Anim Nutr Country: England |
Other Details:
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Languages: eng Pagination: 1-11 Citation Subset: IM |
Affiliation:
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Institute for Agricultural and Fisheries Research (ILVO), Animal Sciences Unit, Melle, Belgium. sam.millet@ilvo.vlaanderen.be |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animal Feed
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analysis Animal Nutritional Physiological Phenomena Animals Diet / veterinary Dietary Proteins / pharmacology* Female Nitrogen / metabolism* Swine / growth & development* Weight Gain / drug effects |
| Chemical | |
Reg. No./Substance:
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0/Dietary Proteins; 7727-37-9/Nitrogen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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