Evaluation of trace mineral source and preharvest deletion of trace minerals from finishing diets on tissue mineral status in pigs
| Autor: | Y. L. Ma, M. D. Lindemann, S. F. Webb, G. Rentfrow |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | Asian-Australasian Journal of Animal Sciences, Vol 31, Iss 2, Pp 252-262 (2018) |
| Druh dokumentu: | article |
| ISSN: | 1011-2367 1976-5517 |
| DOI: | 10.5713/ajas.17.0189 |
| Popis: | Objective An experiment was conducted to evaluate dietary supplemental trace mineral source and deletion on mineral content in tissues. Methods Weanling crossbred pigs (n = 144; 72 barrows and 72 gilts; body weight [BW] = 7.4±1.05 kg) were used. A basal diet was prepared, and trace mineral premix containing either inorganic (ITM) or organic (OTM) trace minerals (Cu, Fe, Mn, and Zn) was added to the basal diet. Pigs were blocked by sex and BW and randomly allotted to 24 pens for a total of 6 pigs per pen, and fed a diet containing either ITM or OTM supplemented at the 1998 NRC requirement estimates for each of 5 BW phases (Phase I to V) from 7 to 120 kg. The trace mineral supplementation was deleted for 6, 4, 2, and 0 wk of Phase V; regarding nutrient adequacy during this phase, the indigenous dietary Fe and Mn was sufficient, Cu was marginal and Zn was deficient. Results At the end of Phase IV, Mn content (mg/kg on the dry matter basis) was greater (p |
| Databáze: | Directory of Open Access Journals |
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