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Genova JL, Rupolo PE, de Azevedo LB, Henz D, Carvalho ST, Kipper M, Gonçalves GDAC, Vilela HLO, Pasquetti TJ, de Oliveira NTE, Dietrich ARM, Carvalho PLDO. β-mannanase supplementation in diets reduced in 85 kcal metabolizable energy/kg containing xylanase-phytase improves gain to feed ratio, nutrient usage, and backfat thickness in finisher pigs. Front Vet Sci 2023; 10:1144692. [PMID: 37008356 PMCID: PMC10061018 DOI: 10.3389/fvets.2023.1144692] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Accepted: 02/27/2023] [Indexed: 03/18/2023] Open
Abstract
This study aimed to assess the effects of β-mannanase supplementation in metabolizable energy (ME)-reduced diets containing xylanase-phytase on performance, fecal score, blood biochemical and immunological profile, apparent total tract digestibility (ATTD), digesta passage rate, fecal microbiome, carcass traits and meat quality in finisher pigs (n = 40 entire male hybrid, 26.0 ± 0.9 kg) randomly assigned to 1 of 4 dietary treatments: a control diet containing isolated phytase and xylanase valued at 40 kcal of ME/kg (CD0), CD0 + β-mannanase (0.3 g/kg valued at 30 kcal of ME/kg) (CD70), CD0 + β-mannanase (0.3 g/kg valued at 45 kcal of ME/kg) (CD85), and CD0 + β-mannanase (0.3 g/kg valued at 60 kcal of ME/kg) (CD100), with 10 pen replicates. Pigs fed CD0 diet showed (P = 0.002) greater ADFI. However, pigs fed CD0 diet showed (P = 0.009) lower G:F than those provided CD70 or CD85 diets. A greater (P < 0.001) superoxide dismutase concentration was observed in pigs fed CD70 diet. Pigs fed CD85 diet showed (P = 0.002) greater digestible protein than pigs fed CD0 or CD100 diets. Pigs fed CD70 diet showed an increase of 11.3% in digestible protein than those fed CD0 diet. In addition, greater (P < 0.001) digestible energy was observed in pigs fed CD85 diet. Pigs fed CD0 or CD100 diets showed greater (P < 0.05) Firmicutes:Bacteroidota ratio than those fed CD85 diet. The Muribaculaceae was more abundant (P = 0.030) in pigs fed CD70 diet than in those fed CD0 diet. The Prevotella was more abundant (P = 0.045) in pigs fed CD85 diet than in those fed CD100 diet. In conclusion, β-mannanase supplementation in diets containing xylanase-phytase allows reducing 85 kcal of ME/kg because it improves gain to feed ratio, energy and protein usage, and backfat thickness without metabolic and intestinal ecosystem disorders in finisher pigs.
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Affiliation(s)
- Jansller Luiz Genova
- Animal Science Department, Universidade Federal de Viçosa, Viçosa, MG, Brazil
- *Correspondence: Jansller Luiz Genova
| | - Paulo Evaristo Rupolo
- Animal Science Department, Universidade Estadual do Oeste do Paraná, Marechal Cândido Rondon, PR, Brazil
| | - Liliana Bury de Azevedo
- Animal Science Department, Universidade Estadual do Oeste do Paraná, Marechal Cândido Rondon, PR, Brazil
| | - Daniela Henz
- Animal Science Department, Universidade Estadual do Oeste do Paraná, Marechal Cândido Rondon, PR, Brazil
| | - Silvana Teixeira Carvalho
- Animal Science Department, Universidade Estadual do Oeste do Paraná, Marechal Cândido Rondon, PR, Brazil
| | - Marcos Kipper
- Elanco Animal Health Incorporated Company, São Paulo, SP, Brazil
| | | | | | - Tiago Junior Pasquetti
- Animal Science Department, Universidade Estadual de Mato Grosso do Sul, Aquidauana, MS, Brazil
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