Effects of exogenous glucoamylase enzymes alone or in combination with a neutral protease on apparent total tract digestibility and feces D-Lactate in crossbred angus bulls fed a ration rich in rolled corn
Visualitza/Obre
Data de publicació
2020-06-23ISSN
2076-2615
Resum
The aim of this study was to evaluate the effect of two glucoamylases (GA) and the
combination of one GA with a neutral protease on apparent total tract digestibility in beef bulls fed a
total mixed ration (TMR) rich in rolled corn. Sixteen Angus beef bulls (266 ± 4.9 kg of initial BW,
and 182 ± 1.7 d of age) were distributed in 4 blocks, each block consisted of 4 animals balanced by
BW. The experimental design was a 4 × 4 Latin square (4 blocks and 4 periods, 2 w per period).
Four treatments were tested; (1) control, (2) GA preparation from Trichoderma reesei (TrGA); (3) GA
from Aspergillus fumigatus (AfuGA); (4) AfuGA in combination with a neutral protease from Bacillus
amyloliquefaciens (BamPro). Apparent total tract digestibility and fecal D-lactate concentration were
analyzed. Enzyme supplementation, regardless of enzyme type, increased apparent total tract
digestibility of dry matter (from 66.7% to 73.1% ± 2.01), and starch (from 74.7% to 81.8% ± 2.25),
without affecting feces D-lactate concentration. Irrespective of glucoamylase type, glucoamylase
supplementation improved apparent digestibility of dry matter and starch, and the addition of a
protease did not have additional benefits on nutrient digestibility
Tipus de document
Article
Versió del document
Versió publicada
Llengua
Anglès
Matèries (CDU)
63 - Agricultura. Silvicultura. Zootècnia. Caça. Pesca
Pàgines
8
Publicat per
MDPI
Publicat a
Animals
Citació
Devant, Maria, Shukun Yu, Sandra Genís, Torben Larsen, and Li Wenting. 2020. "Effects Of Exogenous Glucoamylase Enzymes Alone Or In Combination With A Neutral Protease On Apparent Total Tract Digestibility And Feces D-Lactate In Crossbred Angus Bulls Fed A Ration Rich In Rolled Corn". Animals 10 (6): 1077. doi:10.3390/ani10061077.
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Producció de Remugants
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