scholarly journals Microbial Phytase Improves Performance, Apparent Metabolizable Energy, and Ileal Amino Acid Digestibility of Broilers Fed a Lysine-Deficient Diet

2001 ◽  
Vol 80 (3) ◽  
pp. 338-344 ◽  
Author(s):  
V. Ravindran ◽  
P.H. Selle ◽  
G. Ravindran ◽  
P.C.H. Morel ◽  
A.K. Kies ◽  
...  
Keyword(s):  
Amino Acid ◽  
Metabolizable Energy ◽  
Deficient Diet ◽  
Apparent Metabolizable Energy ◽  
Microbial Phytase

scholarly journals Evaluation of Nitrogen-Corrected Apparent Metabolizable Energy and Standardized Ileal Amino Acid Digestibility of Different Sources of Rice and Rice Milling Byproducts in Broilers

Animals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1894
Author(s):  
Kun Xie ◽  
Xi He ◽  
De-Xing Hou ◽  
Bingkun Zhang ◽  
Zehe Song
Keyword(s):  
Amino Acid ◽  
Chemical Composition ◽  
Starch Content ◽  
Ash Content ◽  
Metabolizable Energy ◽  
Regression Equations ◽  
Apparent Metabolizable Energy ◽  
Rice Milling ◽  
Different Origins ◽  
Different Sources

Rice, broken rice (BR), and full-fat rice bran (FFRB) from six different origins were analyzed for their chemical composition, nitrogen-corrected apparent metabolized energy (AMEn), and standardized amino acid digestibility (SIAAD) in 14-day-old and 28-day-old Arbor Acres broilers. Results showed broilers fed with rice and BR had a similar AMEn regardless of the rice and BR having different CP, EE, NDF, ADF, and ash content. FFRB containing significantly different CP, EE, NDF, ADFm and starch presented variable AMEn (p < 0.05), suggesting that starch content in rice and its byproducts contributed most to the AMEn of broilers. The regression equation of AMEn = 14.312 − (0.198 × NDF) and AMEn = 6.491 + (0.103 × Starch) were feasible to integrally predict AMEn of broilers fed to rice and its byproducts. Moreover, 28-day-old broilers had higher SIAAD than 14-day-old ones. The SIAAD of rice were higher than BR and FFRB except for Met, Cys, Thr, and Tyr in 14-day-old broilers (p < 0.05), and the SIAAD of His, Asp, and Ser in BR were higher than FFRB (p < 0.05). In 28-day-old broilers, the SIAAD of Leu, Trp, Asp, Gly, and Pro of rice were still higher than BR and FFRB (p < 0.05), but BR and FFRB had no significant differences (p > 0.05). The regression equations to estimate the SIAAD of Thr, Lys, and Met were: Met = 81.46 + (0.578 × CP), Thr = 0.863 + (6.311 × CP), and Trp = 102.883 − (1.77 × CP), indicating that CP content in rice and its byproducts was likely a major factor for prediction of SIAAD.

scholarly journals Digestibility and performance responses of broiler chickens fed a pea based diet with different levels of dietary microbial phytase

2014 ◽  
Vol 1 (1) ◽  
Author(s):  
Lisa Anne Johnson ◽  
Aman Deep ◽  
Hank Classen
Keyword(s):  
Broiler Chickens ◽  
Positive Impact ◽  
Nutrient Digestibility ◽  
Metabolizable Energy ◽  
Broiler Chicks ◽  
Activity Levels ◽  
Feed Conversion ◽  
Apparent Metabolizable Energy ◽  
Microbial Phytase ◽  
Four Levels

Although the benefits of phytase are well documented, the purpose of this study was to determine the effect of supplemented phytase on pea-based diets in poultry, as research is lacking on pea diets. A 21-day feeding trial using male broiler chicks on the day of hatch was conducted to assess the effects of adding four levels of dietary microbial phytase (0.0, 0.1, 0.3 and 0.9 g/kg diet; with respective activity levels of 0, 500, 1500 and 4500 FTU or phytase units) to a pea-based diet on bird productivity and digestibility. The responses were evaluated in terms of broiler performance, nutrient digestibility and apparent metabolizable energy (AME). This research demonstrated that digestibility of ash and starch increased with phytase supplementation. Protein and fat digestibility remained relatively constant, but an increase in apparent metabolizable energy (AME) was seen. The performance of broilers also improved as increased weekly gains attributable to phytase were seen through improved feed conversion. The results of this research are indicative that phytase supplementation in poultry pea-based diets has a positive impact.

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