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231224s2015 xx |||||o 00| ||eng c |
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|a 10.5713/ajas.15.0059
|2 doi
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|a eng
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|a Kiarie, E
|e verfasserin
|4 aut
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|a Efficacy of New 6-Phytase from Buttiauxella spp. on Growth Performance and Nutrient Retention in Broiler Chickens Fed Corn Soybean Meal-based Diets
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|c 2015
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|a Text
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|a Date Completed 01.09.2015
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|a Date Revised 18.03.2022
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a 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
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|a Journal Article
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|a Amino Acid
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|a Broiler
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|a Growth Performance
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|a Phosphorus
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| 650 |
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|a Phytase
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|a Woyengo, T
|e verfasserin
|4 aut
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|a Nyachoti, C M
|e verfasserin
|4 aut
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|i Enthalten in
|t Asian-Australasian journal of animal sciences
|d 1998
|g 28(2015), 10 vom: 01. Okt., Seite 1479-87
|w (DE-627)NLM098195883
|x 1011-2367
|7 nnns
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|g volume:28
|g year:2015
|g number:10
|g day:01
|g month:10
|g pages:1479-87
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