Protease supplementation in maize-based diet influenced net energy and nutrient digestibility in broilers
This experiment evaluated the effects of supplemental protease in maize-based diets formulated with reduced density of digestible amino acids (dAA) on net energy (NE) utilisation and nutrient digestibility in broilers. A total of 312, one-day-old, male broilers (Ross 308) were randomly distributed i...
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Brill
2021-08-01
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| Series: | Journal of Applied Animal Nutrition |
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| Online Access: | https://www.wageningenacademic.com/doi/10.3920/JAAN2021.0007 |
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| author | K.W. McCafferty A.F. Moss N.K. Morgan A.J. Cowieson M. Choct |
| author_facet | K.W. McCafferty A.F. Moss N.K. Morgan A.J. Cowieson M. Choct |
| author_sort | K.W. McCafferty |
| collection | DOAJ |
| description | This experiment evaluated the effects of supplemental protease in maize-based diets formulated with reduced density of digestible amino acids (dAA) on net energy (NE) utilisation and nutrient digestibility in broilers. A total of 312, one-day-old, male broilers (Ross 308) were randomly distributed into 24 floor pens and fed one of three treatments, with eight pen replicates per treatment throughout the starter (1 to 14 d of age) and grower (15 to 28 d of age) phases. Dietary treatments consisted of a positive control (PC) reference diet, a negative control diet (NC; dAA density 60 g/kg less than PC diet), and a NC diet with supplemental protease (200 mg/kg). All diets contained supplemental phytase (200 mg/kg) and xylanase (200 mg/kg). The reduction in dAA density between the PC and NC did not affect (P>0.05) NE, but protease supplementation in the NC diet increased (P<0.05) NE by 0.27 MJ/kg, compared with those receiving the NC diet without protease. The reduction in dAA for broilers fed the NC and PC diets did not (P>0.05) affect nitrogen, starch, or DE in the jejunum or ileum. Likewise, no differences (P>0.05) in jejunal (nitrogen, starch, and DE) and ileal (starch and DE) digestibility values were observed between those offered the NC diets without or with protease, but a small difference (P<0.05) in ileal nitrogen digestibility was observed. |
| format | Article |
| id | doaj-art-5f4783c6b13f4971a683fa127a4afec6 |
| institution | Kabale University |
| issn | 2049-257X |
| language | English |
| publishDate | 2021-08-01 |
| publisher | Brill |
| record_format | Article |
| series | Journal of Applied Animal Nutrition |
| spelling | doaj-art-5f4783c6b13f4971a683fa127a4afec62025-01-02T22:46:40ZengBrillJournal of Applied Animal Nutrition2049-257X2021-08-0192859110.3920/JAAN2021.0007Protease supplementation in maize-based diet influenced net energy and nutrient digestibility in broilersK.W. McCafferty0A.F. Moss1N.K. Morgan2A.J. Cowieson3M. Choct4School of Environmental and Rural Sciences, University of New England, Armidale, NSW, 2351, Australia.School of Environmental and Rural Sciences, University of New England, Armidale, NSW, 2351, Australia.School of Environmental and Rural Sciences, University of New England, Armidale, NSW, 2351, Australia.DSM Nutritional Products, Kaiseraugst 4303, Switzerland.School of Environmental and Rural Sciences, University of New England, Armidale, NSW, 2351, Australia.This experiment evaluated the effects of supplemental protease in maize-based diets formulated with reduced density of digestible amino acids (dAA) on net energy (NE) utilisation and nutrient digestibility in broilers. A total of 312, one-day-old, male broilers (Ross 308) were randomly distributed into 24 floor pens and fed one of three treatments, with eight pen replicates per treatment throughout the starter (1 to 14 d of age) and grower (15 to 28 d of age) phases. Dietary treatments consisted of a positive control (PC) reference diet, a negative control diet (NC; dAA density 60 g/kg less than PC diet), and a NC diet with supplemental protease (200 mg/kg). All diets contained supplemental phytase (200 mg/kg) and xylanase (200 mg/kg). The reduction in dAA density between the PC and NC did not affect (P>0.05) NE, but protease supplementation in the NC diet increased (P<0.05) NE by 0.27 MJ/kg, compared with those receiving the NC diet without protease. The reduction in dAA for broilers fed the NC and PC diets did not (P>0.05) affect nitrogen, starch, or DE in the jejunum or ileum. Likewise, no differences (P>0.05) in jejunal (nitrogen, starch, and DE) and ileal (starch and DE) digestibility values were observed between those offered the NC diets without or with protease, but a small difference (P<0.05) in ileal nitrogen digestibility was observed.https://www.wageningenacademic.com/doi/10.3920/JAAN2021.0007broilersdigestibilitynet energyprotease |
| spellingShingle | K.W. McCafferty A.F. Moss N.K. Morgan A.J. Cowieson M. Choct Protease supplementation in maize-based diet influenced net energy and nutrient digestibility in broilers Journal of Applied Animal Nutrition broilers digestibility net energy protease |
| title | Protease supplementation in maize-based diet influenced net energy and nutrient digestibility in broilers |
| title_full | Protease supplementation in maize-based diet influenced net energy and nutrient digestibility in broilers |
| title_fullStr | Protease supplementation in maize-based diet influenced net energy and nutrient digestibility in broilers |
| title_full_unstemmed | Protease supplementation in maize-based diet influenced net energy and nutrient digestibility in broilers |
| title_short | Protease supplementation in maize-based diet influenced net energy and nutrient digestibility in broilers |
| title_sort | protease supplementation in maize based diet influenced net energy and nutrient digestibility in broilers |
| topic | broilers digestibility net energy protease |
| url | https://www.wageningenacademic.com/doi/10.3920/JAAN2021.0007 |
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