Efficacy of New 6-Phytase from spp. on Growth Performance and Nutrient Retention in Broiler Chickens Fed Corn Soybean Meal-based Diets
A total of 420 day-old male Ross chicks were weighed at d 1 of life and assigned to test diets to assess the efficacy of a new Buttiauxella spp. phytase expressed in Trichoderma reesei. Diets were: positive control (PC) adequate in nutrients and negative control (NC) diet (40% and 17% less available...
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Asian-Australasian Association of Animal Production Societies
2015-10-01
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| Series: | Asian-Australasian Journal of Animal Sciences |
| Subjects: | |
| Online Access: | http://www.ajas.info/upload/pdf/ajas-28-10-1479.pdf |
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| author | E. Kiarie T. Woyengo C. M. Nyachoti |
| author_facet | E. Kiarie T. Woyengo C. M. Nyachoti |
| author_sort | E. Kiarie |
| collection | DOAJ |
| description | A total of 420 day-old male Ross chicks were weighed at d 1 of life and assigned to test diets to assess the efficacy of a new Buttiauxella spp. phytase expressed in Trichoderma reesei. Diets were: positive control (PC) adequate in nutrients and negative control (NC) diet (40% and 17% less available phosphorous (P) and calcium (Ca), respectively) supplemented with 6 levels of phytase 0, 250, 500, 750, 1,000, and 2,000 phytase units (FTU)/kg of diet. All diets had titanium dioxide as digestibility marker and each diet was allocated to ten cages (6 birds/cage). Diets were fed for 3 wk to measure growth performance, apparent retention (AR) on d 17 to 21 and bone ash and ileal digestibility (AID) on d 22. Growth performance and nutrient utilization was lower (p<0.05) for NC vs PC birds. Phytase response in NC birds was linear (p<0.05) with 2,000 FTU showing the greatest improvement on body weight gain (20%), feed conversion (7.4%), tibia ash (18%), AR of Ca (38%), AR of P (51%) and apparent metabolizable energy corrected for nitrogen (5.1%) relative to NC. Furthermore, phytase at ≥750 FTU resulted in AID of total AA commensurate to that of PC fed birds and at ≥1,000 FTU improved (p<0.05) AR of P, dry matter, and N beyond that of the lower doses of phytase and PC diet. In conclusion, the result from this study showed that in addition to increased P and Ca utilization, the new Buttiauxella phytase enhanced growth performance and utilization of other nutrients in broiler chickens in a dose-dependent manner. |
| first_indexed | 2024-12-24T03:37:19Z |
| format | Article |
| id | doaj.art-6ce1d3e7cf7947ef8019a0adbea37066 |
| institution | Directory Open Access Journal |
| issn | 1011-2367 1976-5517 |
| language | English |
| last_indexed | 2024-12-24T03:37:19Z |
| publishDate | 2015-10-01 |
| publisher | Asian-Australasian Association of Animal Production Societies |
| record_format | Article |
| series | Asian-Australasian Journal of Animal Sciences |
| spelling | doaj.art-6ce1d3e7cf7947ef8019a0adbea370662022-12-21T17:17:01ZengAsian-Australasian Association of Animal Production SocietiesAsian-Australasian Journal of Animal Sciences1011-23671976-55172015-10-0128101479148710.5713/ajas.15.005923182Efficacy of New 6-Phytase from spp. on Growth Performance and Nutrient Retention in Broiler Chickens Fed Corn Soybean Meal-based DietsE. Kiarie0T. Woyengo1C. M. Nyachoti2 DuPont Industrial Bioscience-Danisco Animal Nutrition, Marlborough, Wiltshire, SN8 1XN, UK Department of Animal Science, University of Manitoba, Winnipeg, Manitoba, R3T 2N2, .Canada Department of Animal Science, University of Manitoba, Winnipeg, Manitoba, R3T 2N2, .CanadaA total of 420 day-old male Ross chicks were weighed at d 1 of life and assigned to test diets to assess the efficacy of a new Buttiauxella spp. phytase expressed in Trichoderma reesei. Diets were: positive control (PC) adequate in nutrients and negative control (NC) diet (40% and 17% less available phosphorous (P) and calcium (Ca), respectively) supplemented with 6 levels of phytase 0, 250, 500, 750, 1,000, and 2,000 phytase units (FTU)/kg of diet. All diets had titanium dioxide as digestibility marker and each diet was allocated to ten cages (6 birds/cage). Diets were fed for 3 wk to measure growth performance, apparent retention (AR) on d 17 to 21 and bone ash and ileal digestibility (AID) on d 22. Growth performance and nutrient utilization was lower (p<0.05) for NC vs PC birds. Phytase response in NC birds was linear (p<0.05) with 2,000 FTU showing the greatest improvement on body weight gain (20%), feed conversion (7.4%), tibia ash (18%), AR of Ca (38%), AR of P (51%) and apparent metabolizable energy corrected for nitrogen (5.1%) relative to NC. Furthermore, phytase at ≥750 FTU resulted in AID of total AA commensurate to that of PC fed birds and at ≥1,000 FTU improved (p<0.05) AR of P, dry matter, and N beyond that of the lower doses of phytase and PC diet. In conclusion, the result from this study showed that in addition to increased P and Ca utilization, the new Buttiauxella phytase enhanced growth performance and utilization of other nutrients in broiler chickens in a dose-dependent manner.http://www.ajas.info/upload/pdf/ajas-28-10-1479.pdfAmino AcidBroilerGrowth PerformancePhosphorusPhytase |
| spellingShingle | E. Kiarie T. Woyengo C. M. Nyachoti Efficacy of New 6-Phytase from spp. on Growth Performance and Nutrient Retention in Broiler Chickens Fed Corn Soybean Meal-based Diets Asian-Australasian Journal of Animal Sciences Amino Acid Broiler Growth Performance Phosphorus Phytase |
| title | Efficacy of New 6-Phytase from spp. on Growth Performance and Nutrient Retention in Broiler Chickens Fed Corn Soybean Meal-based Diets |
| title_full | Efficacy of New 6-Phytase from spp. on Growth Performance and Nutrient Retention in Broiler Chickens Fed Corn Soybean Meal-based Diets |
| title_fullStr | Efficacy of New 6-Phytase from spp. on Growth Performance and Nutrient Retention in Broiler Chickens Fed Corn Soybean Meal-based Diets |
| title_full_unstemmed | Efficacy of New 6-Phytase from spp. on Growth Performance and Nutrient Retention in Broiler Chickens Fed Corn Soybean Meal-based Diets |
| title_short | Efficacy of New 6-Phytase from spp. on Growth Performance and Nutrient Retention in Broiler Chickens Fed Corn Soybean Meal-based Diets |
| title_sort | efficacy of new 6 phytase from spp on growth performance and nutrient retention in broiler chickens fed corn soybean meal based diets |
| topic | Amino Acid Broiler Growth Performance Phosphorus Phytase |
| url | http://www.ajas.info/upload/pdf/ajas-28-10-1479.pdf |
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