Ewes fed high-concentrate diets containing flint corn and increasing levels of exogenous amylolytic enzyme: effects on nutrient intake and digestibility

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dc.contributor.authorSousa, Luciano Fernandes
dc.contributor.authorLira de Sousa, Jhone Thallison
dc.contributor.authorSchultz, Erica Beatriz
dc.contributor.authorMiranda Feitosa, Tays Raniellen
dc.contributor.authorGomes, Vinicius Carreteiro
dc.contributor.authorMora Luna, Robert Emilio
dc.contributor.authorMacedo, Gilberto de Lima Junior
dc.date.accessioned2025-01-20T17:38:33Z
dc.date.available2025-01-20T17:38:33Z
dc.date.issued2023
dc.description.abstractThe aim was to evaluate if the inclusion of exogenous amylolytic enzyme affect the nutrient intake and digestibility in ewes fed high-concentrate diets containing flint corn. Five Santa Ines x Dorper crossbred ewes (54.04 +/- 4.5 kg and aged 8 months) were used in a 5 x 5 Latin square design. All animals were housed in individual metabolic cages for 60 days. The treatments consisted of a control diet (without amylolytic enzyme) and four inclusion levels of an amylolytic enzyme (3,000, 6,000, 9,000, and 12,000 a-amylase dextrinizing units [DU] kg(-1) dry matter [DM]). The enzyme was mixed into the feed at the time of supply to the animals. Data were analyzed by ANOVA, and orthogonal polynomial contrasts were used. Nutrient intake was not influenced by amylolytic enzyme inclusion. The digestibility of DM, organic matter, neutral detergent fiber, total carbohydrates, non-fibrous carbohydrates, and gross energy showed a quadratic increase with enzyme inclusion (P<0.05), with maximum values at levels of 7,600, 7,500, 6,300, 7,500, 7,400, and 7,800 DU kg(-1) DM, respectively. Total digestible nutrients of diets also showed a quadratic increase, with a maximum value of 894 g kg(-1) at a level of a-amylase activity of 7,786 DU kg(-1) DM. The inclusion of the exogenous amylolytic enzyme from 6,300 to 7,800 DU kg(-1) DM doesn't alter nutrient intake and improves the digestibility in ewes fed high-concentrate diets. Key words: Alpha-amylase. Nutrition. Sheep. Starch.
dc.fuente.origenWOS
dc.identifier.doi10.5433/1679-0359.2022v44n3p1197
dc.identifier.eissn1679-0359
dc.identifier.issn1676-546X
dc.identifier.urihttps://doi.org/10.5433/1679-0359.2022v44n3p1197
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/91708
dc.identifier.wosidWOS:001067604000018
dc.issue.numero3
dc.language.isoen
dc.pagina.final1206
dc.pagina.inicio1197
dc.revistaSemina-ciencias agrarias
dc.rightsacceso restringido
dc.subjectAlpha-amylase
dc.subjectNutrition
dc.subjectSheep
dc.subjectStarch
dc.subject.ods13 Climate Action
dc.subject.odspa13 Acción por el clima
dc.titleEwes fed high-concentrate diets containing flint corn and increasing levels of exogenous amylolytic enzyme: effects on nutrient intake and digestibility
dc.typeartículo
dc.volumen44
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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