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Effects of phytase pretreatment of soybean meal and phytase-sprayed in diets on growth, apparent digestibility coefficient and nutrient excretion of rainbow trout (Oncorhynchus mykiss Walbaum)
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ÎÄÏ×ÀàÐÍ: Article  
ÓïÑÔ: English  
×÷Õ߹ؼü´Ê: Phytase; Rainbow trout; Growth; Apparent digestibility coefficient; Nutrient excretion  
KeyWords Plus: MICROBIAL PHYTASE; PROTEIN-CONCENTRATE; FISH-MEAL; PHOSPHORUS DIGESTIBILITY; MORONE-SAXATILIS; ATLANTIC SALMON; STRIPED BASS; PHYTIC ACID; CANOLA-MEAL; AVAILABILITY  
ͨѶ×÷ÕßµØÖ·: Yang, YH (ͨѶ×÷Õß), NE Agr Univ, Coll Anim Sci & Technol, Harbin 150030, Heilongjiang Peoples R China  
µØÖ·:
1. NE Agr Univ, Coll Anim Sci & Technol, Harbin 150030, Heilongjiang Peoples R China
2. Harbin Acad Agr Sci, Fisheries Res Inst, Harbin 150030, Heilongjiang Peoples R China  
µç×ÓÓʼþµØÖ·: yangyuhong_68@yahoo.com.cn  
»ù½ð×ÊÖúÖÂл:
»ù½ð×ÊÖú»ú¹¹ ÊÚȨºÅ
Harbin Academy of Agricultural Sciences Fisheries Research Institute   
Harbin Science and Technology Project  2005AA6CN183  

[ÏÔʾ»ù½ð×ÊÖúÐÅÏ¢]   

The place of study was supported by Harbin Academy of Agricultural Sciences Fisheries Research Institute and the experiment was financially supported by grant # 2005AA6CN183 from Harbin Science and Technology Project.

³ö°æÉÌ: SPRINGER, VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS  
ѧ¿ÆÀà±ð: Fisheries  
IDS ºÅ: 420AF  
ISSN: 0967-6120  
DOI: 10.1007/s10499-008-9187-5  

               
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Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû½»Á÷
FN ISI Export Format
VR 1.0
PT  J
AU  Wang, F
Yang, YH
Han, ZZ
Dong, HW
Yang, CH
Zou, ZY
AF  Wang, Feng
Yang, Yu-Hong
Han, Zhi-Zhong
Dong, Hong-Wei
Yang, Cheng-Hui
Zou, Zuo-Yu
TI  Effects of phytase pretreatment of soybean meal and phytase-sprayed in diets on growth, apparent digestibility coefficient and nutrient excretion of rainbow trout (Oncorhynchus mykiss Walbaum)
SO  AQUACULTURE INTERNATIONAL
LA  English
DT  Article
DE  Phytase; Rainbow trout; Growth; Apparent digestibility coefficient; Nutrient excretion
ID  MICROBIAL PHYTASE; PROTEIN-CONCENTRATE; FISH-MEAL; PHOSPHORUS DIGESTIBILITY; MORONE-SAXATILIS; ATLANTIC SALMON; STRIPED BASS; PHYTIC ACID; CANOLA-MEAL; AVAILABILITY
AB  Rainbow trout were fed a diet containing phytase-sprayed and phytase-pretreated soybean meal with different phytase levels. The single factor random block design was used to analyze the effects on rainbow trout of dietary phytase supplementation on growth performance, nutritional ingredient digestibility and nutrient excretion. After 90 days, the results showed that feed conversion ratio (FCR) and protein efficiency ratio (PER) were significantly improved and specific growth rate (SGR) was not affected by spraying phytase, but SGR, FCR and PER were not significantly improved by phytase pretreatment. A digestibility trial conducted after the feeding trial showed that apparent digestibility coefficient (ADC) of diet protein and minerals was increased with phytase supplementation. However, there was a negative effect of phytase on the ADC of lipid. The excretion experiment showed that the supplementation of phytase resulted in decreased nutrient excretion in feces, but lipid excretion was slightly increased with phytase supplementation. In addition, the results of P excretion and ADC of P analyzed by t-test showed that phytase pre-treatment method should be a more rational method than the spraying method. The results of SGR, ADC of P and P excretion analyzed by quadratic regression indicated that 2,000-3,000 U/kg levels by the spraying method could be a rational range of phytase supplementation, and about 1,000 U/kg should be an optimal level by the pretreatment method. Thus, use of phytase in rainbow trout feeds can have economic and environmental benefits.
C1  [Wang, Feng; Yang, Yu-Hong] NE Agr Univ, Coll Anim Sci & Technol, Harbin 150030, Heilongjiang, Peoples R China.
[Han, Zhi-Zhong; Dong, Hong-Wei; Yang, Cheng-Hui; Zou, Zuo-Yu] Harbin Acad Agr Sci, Fisheries Res Inst, Harbin 150030, Heilongjiang, Peoples R China.
RP  Yang, YH, NE Agr Univ, Coll Anim Sci & Technol, Harbin 150030, Heilongjiang, Peoples R China.
EM  yangyuhong_68@yahoo.com.cn
FU  Harbin Academy of Agricultural Sciences Fisheries Research Institute ; Harbin Science and Technology Project [2005AA6CN183]
FX  The place of study was supported by Harbin Academy of Agricultural Sciences Fisheries Research Institute and the experiment was financially supported by grant # 2005AA6CN183 from Harbin Science and Technology Project.
NR  45
TC  0
PU  SPRINGER
PI  DORDRECHT
PA  VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN  0967-6120
J9  AQUACULT INT
JI  Aquac. Int.
PD  APR
PY  2009
VL  17
IS  2
BP  143
EP  157
DI  10.1007/s10499-008-9187-5
PG  15
SC  Fisheries
GA  420AF
UT  ISI:000264260100004 £¨ÊÕ¼ºÅ£©
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