Additivity of apparent and standardized ileal digestibility of phosphorus in mixed diets containing corn and soybean meal fed to broiler chickens

Babatunde, O.O.; Osho, S.O.; Park, C.S.; Adeola, O.

doi:10.1016/j.psj.2020.09.022

Cited by 11 publications

(10 citation statements)

References 30 publications

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“…Previous work from our lab has shown that birds at d 13 or 14 are sensitive to low available P and high phytate content as observed with the AID of P and Ca ( Babatunde and Adeola, 2021 ; Babatunde et al, 2020b ). Hypothesis was that when the PP content is increased and nPP kept constant, the amount of P, Ca, as well as other minerals like Zn available to birds reduces significantly in the absence of phytase thereby impacting the AID of this minerals.…”

Section: Discussionmentioning

confidence: 51%

“…The use of phytase and its benefits on broiler production have been growing over the years ( Sebastian et al, 1996 ; Selle and Ravindran, 2007 ; Babatunde et al, 2020b ). It is probably the enzyme class that has shown the highest consistency in its ability to improve the growth performance, nutrient utilization, or bone mineralization of poultry and swine, while efficiently extracting nutrients from feedstuff ( Adedokun et al, 2015 ; Babatunde et al, 2019b ).…”

Section: Discussionmentioning

confidence: 99%

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Evaluation of the responses of broiler chickens to varying concentrations of phytate phosphorus and phytase. Ⅰ. Starter phase (day 1–11 post hatching)

Babatunde

Bello²,

Dersjant-Li³

et al. 2021

Poultry Science

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Growth performance, tibia ash, apparent ileal digestibility ( AID ), and total tract retention ( TTR ) of nutrients responses of broiler chickens fed diets containing varying concentrations of phytate P ( PP ) and a novel consensus bacterial 6-phytase variant (PhyG) from d 1 to 11 post hatching were evaluated with 1,152 broiler chicks. Diets were a nutrient-adequate positive control diet ( PC ) with 2.8 g PP/kg or one of 15 nutrient-reduced negative control (NC: PC minus 88 kcal/kg ME, 0.8 g/kg dig. Lys, 2.0 g/kg available P, 1.8 g/kg Ca and 0.5 g/kg Na) diets with 3 PP (g/kg) levels, mainly from rice bran, at 2.3 (NC1), 2.8 (NC2), or 3.3 (NC3) and 5 PhyG supplementation at 0, 500, 1,000, 2,000, or 4,000 FTU/kg in a 1 + 3 × 5 factorial. All treatments had 6 replicate cages with 12 birds per cage. Despite comparable PP levels, birds fed the PC diet had greater ( P ≤ 0.01) body weight ( BW ), feed intake ( FI ), tibia ash, AID of energy, AA, P, and Ca as compared with birds fed the NC2 without phytase. There was no interaction between PP and phytase for all responses. Increasing PP concentrations linearly decreased ( P < 0.01) BW, FI, AID, and TTR of P and Ca. With phytase supplementation, there was a quadratic response ( P < 0.05) in BW, FI, tibia ash, and a linear increase ( P < 0.05) in the AID of energy, nitrogen, and all the measured AA. Increasing phytase dose from 0 to 4,000 FTU/kg increased ( P < 0.01) AID of P and Ca by 88 and 18%, respectively. There was also a quadratic response ( P ≤ 0.05) on TTR of P and Ca with increasing phytase dose. In conclusion, increasing levels of PP reduced growth performance and most nutrient utilization responses of broiler chickens while phytase supplementation positively impacted the responses of broiler chickens during d 1 to 11 post hatching.

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Section: Discussionmentioning

confidence: 51%

Section: Discussionmentioning

confidence: 99%

Evaluation of the responses of broiler chickens to varying concentrations of phytate phosphorus and phytase. Ⅰ. Starter phase (day 1–11 post hatching)

Babatunde

Bello²,

Dersjant-Li³

et al. 2021

Poultry Science

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“…Broiler chickens are known to have difficulties in hydrolyzing the phytic acid bonds that tightly bind P in most cereals and oilseeds ( Babatunde et al, 2020b ). Phytate also forms complexes with other divalent minerals such as Ca and Zn, AA, and even enzymes such as carbohydrases and proteases necessary to digest starch and proteins, respectively ( Selle and Ravindran, 2007 ; Cowieson et al, 2011 ).…”

Section: Discussionmentioning

confidence: 99%

Evaluation of the responses of broiler chickens to varying concentrations of phytate phosphorus and phytase. Ⅱ. Grower phase (day 12–23 post hatching)

Babatunde

Bello²,

Dersjant-Li³

et al. 2022

Poultry Science

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A randomized complete block design study used 768 male broiler chickens to investigate the effects of phytate P ( PP ) and a novel consensus bacterial phytase variant ( PhyG ) concentration on growth performance, bone mineralization, apparent ileal digestibility ( AID ), and total tract retention ( TTR ) of nutrients in broiler chickens. Treatments were arranged in a 1 + 3 × 5 factorial with a nutrient-adequate positive control diet ( PC ) with 2.8 g PP/kg, 3 nutrient-reduced negative control diets (NC: PC minus 88 kcal/kg ME, 0.8 g/kg dig. Lys, 2.0 g/kg available P, 2.0 g/kg Ca and 0.5 g/kg Na) with varying PP (g/kg) levels, mainly from rice bran, at 2.3 (NC1), 2.8 (NC2), or 3.3 (NC3) and 5 PhyG doses at 0, 500, 1,000, 2,000, or 4,000 FTU/kg. All treatments had 6 replicate cages with 8 birds/cage. A commercial starter diet was fed from d 0 to 12 and the experimental diets from d 12 to 23 post hatching. Birds fed the NC2 diet without phytase had lower ( P < 0.01) BW, BW gain, and feed intake ( FI ) as compared with birds fed the PC with the same PP level. With increasing phytate, there was a decrease ( P < 0.05) in BW, BW gain, and FI. Phytase increased ( P < 0.01) BW and feed efficiency of broiler chickens. An interaction ( P < 0.05) between PP and phytase concentrations was observed on the AID of Met, Cys, and Thr. Linear decrease ( P < 0.01) in the AID and TTR of P and Ca with increasing PP concentrations were observed. Phytase supplementation increased ( P ≤ 0.05) the AID of P, Ca, and all AA. The TTR of P, Ca, and Zn was linearly increased ( P < 0.01) by 112, 123, and 46%, respectively, when birds fed NC diets with 0 and 4,000 FTU/kg were compared. In conclusion, phytate reduced the growth performance and nutrient utilization of broiler chickens from d 12 to 23 post hatching while phytase ameliorated these negative effects.

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“…additive [41] and are not affected by dietary P [40], the SID of P in various feed ingredients fed to broilers has been determined. However, information on the SID of P in feed phosphates fed to poultry is limited.…”

Section: A C C E P T E D a R T I C L Ementioning

confidence: 99%

“…Therefore, ileal digestibility of P in feed ingredients fed to poultry may be determined to exclude urinary excretion in the excreta [ 40 ]. Because values for standardized ileal digestibility (SID) of P are additive [ 41 ] and are not affected by dietary P [ 40 ], the SID of P in various feed ingredients fed to broilers has been determined. However, information on the SID of P in feed phosphates fed to poultry is limited.…”

Section: Digestibility Of P In Feed Phosphatesmentioning

confidence: 99%

— Invited Review — Mineral composition and phosphorus digestibility in feed phosphates fed to pigs and poultry

Lee¹,

López²,

Stein³

2023

Anim Biosci

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Phosphorus (P) is a macro mineral needed for bone mineralization and cell membrane structure and P is also involved in several fundamental pathways of metabolism in the body. Because of the low concentration and digestibility of P in plant ingredients that are the main components of diets for poultry and pigs, feed phosphates are usually included in diets in addition to the P contributed by plant ingredients. The most widely used feed phosphates in poultry and swine diets are dicalcium phosphate (DCP) and monocalcium phosphate (MCP), but tricalcium phosphate (TCP), monosodium phosphate (MSP), and magnesium phosphate (MgP) may be used as well. Because feed phosphates are mostly produced from rock phosphate, feed phosphates have impurities that contain minerals other than P. Concentrations of P in feed phosphates range from 14.8% (MgP) to 25.7% (MSP). The standardized total tract digestibility (STTD) of P in pigs ranges from 71% (TCP) to 95% (MSP). The STTD of Ca and the standardized ileal digestibility (SID) of P and Ca in feed phosphates fed to pigs and poultry have been determined only in a few experiments. Available data indicate that the STTD of Ca and SID of P in MCP are greater than in DCP in both poultry and pigs, but the SID of Ca is similar between DCP and MCP fed to broilers. Information on mineral concentrations and digestibility values in feed phosphates is needed in diet formulation for pigs and poultry, but if diets are formulated to contain equal concentrations of digestible P and Ca, it is unlikely that animal performance will be impacted by the source of feed phosphates used in the diet.

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Additivity of apparent and standardized ileal digestibility of phosphorus in mixed diets containing corn and soybean meal fed to broiler chickens

Cited by 11 publications

References 30 publications

Evaluation of the responses of broiler chickens to varying concentrations of phytate phosphorus and phytase. Ⅰ. Starter phase (day 1–11 post hatching)

Evaluation of the responses of broiler chickens to varying concentrations of phytate phosphorus and phytase. Ⅰ. Starter phase (day 1–11 post hatching)

Evaluation of the responses of broiler chickens to varying concentrations of phytate phosphorus and phytase. Ⅱ. Grower phase (day 12–23 post hatching)

— Invited Review — Mineral composition and phosphorus digestibility in feed phosphates fed to pigs and poultry

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