Thermo-stable <i>Escherichia coli</i> phytase improves growth performance and nutrient utilization in broilers fed mash and pelleted corn-soybean-meal-based diets

Woyengo, T. A.; Emiola, Adewale O; Owusu-Asiedu, A.; Guenter, W.; Simmins, P.H.; Nyachoti, C. M.

doi:10.4141/cjas10049

Cited by 2 publications

(3 citation statements)

References 28 publications

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“…In NC mash diets supplemented with U-phytase or C-phytase, measured phytase activity was close to specifi cations by the manufacturer, indicating the diets were mixed properly. After pelleting, the measured phytase activity in pelleted NC diets supplemented with C-phytase was decreased similar to the reduced lower phytase activity in pelleted broiler diets based on corn and soybean meal supplemented with C-phytase (Woyengo et al, 2010). This reduced activity might be due to alterations in the primary and secondary structure of phytase resulting from exposure to heat (Spring et al, 1996).…”

Section: Thermostability and Enzyme Activitymentioning

confidence: 54%

“…The decrease in dietary Ca and P selected for the present study ensured that P and Ca were indeed limiting in the NC diet; therefore, the NC diet was a solid basis to detect the impact of supplemental phytase. The present study is among the fi rst in pigs indicating that bioeffi cacy of unique supplemental phytase can be maintained during steam pelleting whereas similar research has been conducted with poultry (Kirkpinar and Basmacioğlu, 2006;Timmons et al, 2008;Woyengo et al, 2010).…”

Section: Discussionmentioning

confidence: 75%

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Growth performance, diet nutrient digestibility, and bone mineralization in weaned pigs fed pelleted diets containing thermostable phytase1

Yáñez

Landero

Owusu-Asiedu³

et al. 2013

Journal of Animal Science

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Traditional supplemental dietary phytase loses activity during steam pelleting. The thermal tolerance and bioefficacy of a phytase product with a thermoprotective coating [coated phytase (C-phytase)] was compared in mash and pelleted diets to a traditional, uncoated phytase (U-phytase) added to a negative control (NC) diet, formulated with reduced dietary Ca and P, and compared with a corn-soybean meal based positive control (POC) diet. Growth performance, nutrient digestibility, and third metacarpal bone characteristics were response variables. Weaned pigs (n = 56; 8.20 ± 0.5 kg initial BW; 28 d of age) were individually housed and randomly allotted to 1 of 7 diets for 21 d. The diets were 1) POC mash, 2) NC mash, 3) NC pelleted at 90°C, 4) NC mash + 500 U/kg U-phytase, 5) NC mash + 500 U/kg C-phytase, 6) NC + 500 U/kg C-phytase pelleted at 80°C, and 7) NC + 500 U/kg C-phytase pelleted at 90°C. The POC and NC diets were formulated to be isoenergetic and isolysinic. The content of Ca and available P was 1.01 and 0.40% and 0.83 and 0.22% in the POC and NC diets, respectively. Pig BW and feed intake were measured on d 7, 14, and 21, and feces were collected for 2 d. On d 21, pigs were killed and ileal digesta and the third metacarpal bone collected. Pigs fed POC had greater (P < 0.05) ADG, G:F, P digestibility, and bone mineralization but lower (P < 0.01) energy digestibility than pigs fed NC. Pelleting the NC diet did not improve performance, nutrient digestibility, or P use. Adding the U-phytase to NC mash diet increased (P < 0.05) ADG, G:F, apparent ileal digestibility (AID) of CP and Ile, Leu, Phe, Thr, Val, and Ser, and apparent total tract digestibility (ATTD) of P compared with pigs fed NC. Pigs fed C-phytase in NC mash diets had increased (P < 0.05) G:F and an AID of CP and AA and ATTD of P compared with pigs fed NC but not different than pigs fed U-phytase NC mash diets. Pigs fed pelleted NC diet with C-phytase had a greater (P < 0.05) ATTD of P and energy than pigs fed mash NC diet with C-phytase but had similar growth performance, AID of CP and AA, and bone mineralization to pigs fed U-phytase. In conclusion, release and bioefficacy of phytase after pelleting was not affected by the thermal protective coating.

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Section: Thermostability and Enzyme Activitymentioning

confidence: 54%

Section: Discussionmentioning

confidence: 75%

Growth performance, diet nutrient digestibility, and bone mineralization in weaned pigs fed pelleted diets containing thermostable phytase1

Yáñez

Landero

Owusu-Asiedu³

et al. 2013

Journal of Animal Science

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“…아미노산 소화율에 대한 연구는 육계에서 광범위하게 수 행되었으나 (Huang et al, 2005;Bandegan et al, 2010;Woyengo et al, 2010), 오리에 대한 사료원료의 회장 아미노산 소화율에 관한 정보는 부족하다. 과거에 수행되었던 연구에 서 회장 아미노산 소화율은 가금류의 품종 사이에서는 변하 지 않으며, 육계로부터 얻어진 소화율 자료는 오리에서도 이 용 가능하리라고 추정되어져 왔다 (Kong and Adeola, 2010).…”

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Comparison of Ileal and Fecal Digestibility of Canola Meal and Wheat Bran in Ducks

Kim¹,

Kang²,

Bang³

et al. 2015

Korean Journal of Poultry Science

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This work was carried out to evaluate the feces and ileal digestibility of canola meal and wheat bran in ducks. Ninety Pekin ducks (6-week-old, average 3.4 kg) were divided into three treatments (6 replications/treatment, 5 birds/replication) by feedstuffs (basal diet, canola meal, and wheat bran) and were fed on these diets in individual metabolic cages for one week. After one week, the samples for analysis were collected from feces and ileum. On comparison of treatments and collected sites, the feces digestibility of basal diet was the highest among treatments on chemical compositions except crude protein and crude fat and ileal digestibility of canola meal was the lowest (P<0.01). On comparison of treatments, the digestibility of basal diet was higher and that of wheat bran was lower when compared to other treatments (P<0.05). The feces digestibility was lower than the ileal digestibility in crude protein (P<0.05) and crude fat (P<0.01). The digestibility of amino acid was the highest at feces of control group among treatments (P<0.01). No significant difference was detected in terms of digestibility of isoleucine, leucine and phenylalanine among essential amino acids, and alanine, glycine and tyrosine among non-essential amino acids between control and wheat bran, and wheat bran and canola meal. However amino acid digestibility was higher in control group when compared to canola meal group (P<0.05). Other amino acid digestibilities were not significantly differ by treatments. These results may provide the basic data on amino acid digestibility of ducks to evaluate feedstuffs and to formulate optimum diet for commercial Pekin duck.(Key words : duck, digestibility, amino acid, canola meal, wheat bran) † To whom correspondence should be addressed : drhong@korea.kr Huang et al., 2005;Ravindran et al., 2005). 그러 나 맹장에 존재하는 미생물에 의하여 아미노산 성분이 변화 되기 때문에, 가금류에서는 회장 소화율이 분 소화율에 비 해 실질적이고 정확한 방법으로 인식되고 있다 (Ravindran et al., 1999). 따라서 몇몇 연구들은 다양한 사료 원료, 품종 및 닭의 주령에 대한 회장 아미노산 소화율에 대한 자료를 제

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Thermo-stable Escherichia coli phytase improves growth performance and nutrient utilization in broilers fed mash and pelleted corn-soybean-meal-based diets

Cited by 2 publications

References 28 publications

Growth performance, diet nutrient digestibility, and bone mineralization in weaned pigs fed pelleted diets containing thermostable phytase1

Growth performance, diet nutrient digestibility, and bone mineralization in weaned pigs fed pelleted diets containing thermostable phytase1

Comparison of Ileal and Fecal Digestibility of Canola Meal and Wheat Bran in Ducks

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