The phytase analytical activity of pelleted diets may not adequately describe efficacy in the bird

Loop, S. A.; Lilly, K. G. S.; Shires, L. K.; Gehring, C. K.; Beaman, K. R.; Persia, Michael E.; Moritz, J. S.

doi:10.3382/japr.2011-00384

Cited by 19 publications

(2 citation statements)

References 7 publications

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“…Phytase activity determination was done by the AOAC methodology (AOAC 2000) (Loop et al 2012). Production parameters (Feed intake (FI), body weight gain (BWG), and feed conversion ratio (FCR) were calculated on weekly basis.…”

Section: Study Parametersmentioning

confidence: 99%

Phytase in Feed Positively Affected the Phosphorus Digestibility and Growth Performance in Broilers

Munawar¹,

Naveed²,

Qaisrani³

et al. 2022

SJA

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C orn-soy-based diet contains approximately 40-60% phosphorus (P) in phytate phosphorus form. The unabsorbed phytate P from the birds causes environmental pollution, therefore using phytase to control the excretion of phytate P for reduction of environmental pollution is necessary (Guo et al., 2009;Attia et al., 2019). Nowadays, exogenous enzymes like phytase are commercially used in poultry Abstract | The effect of post pelleting liquid phytase supplementation was evaluated in broilers on the basis of growth production, plasma and tibia phosphorus. The (n=504) day-old broiler chickens procured randomly allocated into 6 treatments dietary treatments were: B positive control (PC) diet (0.42% available phosphorus in grower feed, A negative control (NC) diet with (0.30% avail. P in starter and 0.26% avail. phosphorus in grower) while four diets C, D supplemented with NC+ (500 and 750 powder phytase units (FTU)/kg) and G, H supplemented with NC+ (500 and 750 liquid phytase units (FTU)/kg) respectively. Pelleting temperature was set at 85°C during feed processing production. Blood, ileal digesta, weight of visceral organs, left tibia were sampled for the quantity of phosphorus in plasma, its digestibility and tibial calcium and phosphorus. The present study reported that H group was found higher in FI, BWG and FCR as compared to other groups. Higher gizzard, liver and heart weight were recorded in group A and B while tibia ash, Ca and P in group H. Described results concluded that supplementing liquid phytase enhances breakdown of phytate phosphorus, phosphorus availability, digestibility, and growth performance.

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Section: Study Parametersmentioning

confidence: 99%

Phytase in Feed Positively Affected the Phosphorus Digestibility and Growth Performance in Broilers

Munawar¹,

Naveed²,

Qaisrani³

et al. 2022

SJA

View full text Add to dashboard Cite

show abstract

“…In addition, when complete diets containing enzymes are pelleted, all nutrients, not just the enzymes, are affected; thus, live bird efficacy may be more useful than direct tests of enzymatic recovery [7,8]. Recent data have also shown that the phytase activity of pelleted diets may not adequately describe the efficacy in the bird [9]. Therefore, the objective of the current experiments was to assess a commercially available EEC subjected to increasing steam conditioning temperatures during pelleting, using 4-to 21-d broiler performance and AME n as indicators of efficacy.…”

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confidence: 98%