Super-dosing phytase improves the growth performance of weaner pigs fed a low iron diet
| Autor: | S. Laird, Imke Kühn, H. M. Miller |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Litter (animal) chemistry.chemical_classification biology 0402 animal and dairy science 04 agricultural and veterinary sciences 040201 dairy & animal science Bioavailability Ferritin 03 medical and health sciences 030104 developmental biology Animal science chemistry Transferrin High doses biology.protein Animal Science and Zoology Phytase Dosing Weaner pigs |
| Zdroj: | Animal Feed Science and Technology. 242:150-160 |
| ISSN: | 0377-8401 |
| DOI: | 10.1016/j.anifeedsci.2018.06.004 |
| Popis: | This experiment was conducted to test the hypothesis that a super-dose of phytase would improve the performance of weaner pigs fed an Fe-deficient diet, through an increase in phytate bound-Fe bioavailability. A total of 234 pigs (initial BW 7.6 + SE 0.16 kg) were weaned at ∼28 d of age and blocked into mixed sex pens of 4 or 5 balancing for weight, sex and litter of origin. Treatments were arranged as a 3 × 2 factorial with 3 levels of phytase (0, 500 or 2500 FTU/kg feed) and 2 levels of Fe (50 [low; L-Fe] or 300 [high; H-Fe] mg/kg feed as FeSO₄) supplemented to an Fe-deficient wheat-SBM based diet. Diets were offered to 8 replicate pens for 20 d post-weaning. At the end of the experiment, 1 pig per pen was euthanized for the collection of blood, plasma, liver and ileal digesta. Pigs fed the L-Fe diet had a lower ADFI (P |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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