PERFORMANCE AND CARCASS EVALUATION OF SWINE FED FINISHING RATION WITH PHYTASE ASSOCIATED WITH THE WITHDRAWAL OF MICROMINERAL-VITAMIN SUPPLEMENT AND THE REDUCTION OF INORGANIC PHOSPHORUS
DOI:
https://doi.org/10.5216/cab.v11i4.4534Keywords:
Animal productionAbstract
The experiment aimed to evaluate the effect of phytase enzyme in rations for swine at the finishing phase without the use of mineral-vitamin supplement and with reduced levels of inorganic phosphorus on performance and carcass characteristics, ashes and mineral percentage in the bones and economic viability. Twenty-four hybrid females with starter weight of 66 ± 1.4 kg and final weight of 106 ± 1.8 kg were housed for 38 days in 24 stalls and allotted in a completely randomized experimental design with six treatments and four replications of two animals each. The following treatments were used: T1 – basal feed; T2 – basal feed without micromineral-vitamin supplement; T3 – basal feed with phytase and without micromineral-vitamin supplement; T4 – basal feed with phytase, without micromineral-vitamin supplement and without 1/3 of inorganic phosphorus; T5 – basal feed with phytase, without micromineral-vitamin supplement ans without 2/3 of inorganic phosphorus; and T6 – basal feed with phytase, without micromineral vitamin supplement and without inorganic phosphorus supplementation. The withdrawal of the micromineral-vitamin supplemet, the reduction of inorganic phosphorus level and the addition of phytase enzyme did not affect (P>0.05) the carcass characteristics, but they reduced (P<0.05) feed intake and weight gain, and showed worse feed conversion. Likewise, reduction of inorganic phosphorus levels and phytase addition did not improve economic efficiency when compared to basal feed.KEYWORDS: Enzyme, finishing phase, pig, ration, weight gain.
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Published
2010-12-20
How to Cite
OLIVEIRA, A. P. A. de; NUNES, R. da C.; RONER, M. N. B.; STRINGHINI, J. H.; RUFINO, L. M.; FARIAS, L. A. PERFORMANCE AND CARCASS EVALUATION OF SWINE FED FINISHING RATION WITH PHYTASE ASSOCIATED WITH THE WITHDRAWAL OF MICROMINERAL-VITAMIN SUPPLEMENT AND THE REDUCTION OF INORGANIC PHOSPHORUS. Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 11, n. 4, p. 775–783, 2010. DOI: 10.5216/cab.v11i4.4534. Disponível em: https://revistas.ufg.br/vet/article/view/4534. Acesso em: 21 nov. 2024.
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Animal Production
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