Dietary requirements of available phosphorus in growing broiler chickens at a constant calcium:available phosphorus ratio

Mello, Heloisa Helena de Carvalho; Gomes, Paulo Cézar; Rostagno, Horácio Santiago; Albino, Luiz Fernando Teixeira; Rocha, Tatiana Cristina da; Almeida, Rodrigo Lopes de; Calderano, Arele Arlindo

doi:10.1590/s1516-35982012001100004

Cited by 22 publications

(13 citation statements)

References 23 publications

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“…Similar negative effects of a low dietary P concentration on performance were observed in other studies as well (Leske and Coon, 2002; Yan and Waldroup, 2006; Mello et al ., 2012). A difference in pcdP digestibility for MCP was observed between Experiment 1 (88.0%) and Experiment 2 (78.3%).…”

Section: Discussionmentioning

confidence: 99%

Precaecal phosphorus digestibility of inorganic phosphate sources in male broilers

Bikker

Spek

Emous

et al. 2016

British Poultry Science

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The aim of this study, comprising two experiments, was (1) to determine in Experiment 1 the relationship of incremental dietary P (phosphorus) content on precaecal digestible P in male broilers and (2) to determine in Experiment 2 the precaecal P digestibility of various inorganic P sources at marginal levels of P supply.In Experiment 1, a total of 260 male Ross 308 broilers were divided into groups of 10 birds per pen resulting in 8 replicates for treatment 1 and 6 replicates for treatments 2–4. Experimental diets were formulated to contain 4 incremental concentrations of digestible P by means of increasing concentrations of monocalcium phosphate (MCP). In the second experiment, 480-d-old male Ross 308 broilers were divided in groups of 12 birds per pen resulting in 16 replicates for the basal diet and 6 replicates for each test diet. A total of 4 inorganic P sources, MCP, monodicalcium phosphate (MDCP), dicalcium phosphate (DCP) and defluorinated phosphate (DFP) were added to the basal diet to determine the precaecal P digestibility. Three of the 4 inorganic P sources (MCP, MDCP and DCP) represented a mix of batches from different producers. At the end of both experiments, the chyme of the posterior part of the small intestine was collected. Digestibility of P and Ca was determined using titanium dioxide as indigestible marker.In Experiment 1, a reduction in precaecal digestibility of P was observed above an estimated precaecal digestible dietary P concentration of 4.8 g/kg.The precaecal P digestibility of the tested inorganic P sources in Experiment 2 was 78.3% for MCP, 59.0% for DCP, 70.7% for MDCP and 31.5% for DFP.

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Section: Discussionmentioning

confidence: 99%

Precaecal phosphorus digestibility of inorganic phosphate sources in male broilers

Bikker

Spek

Emous

et al. 2016

British Poultry Science

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“…Despite decades of research investigating dietary concentrations of Ca and nPP required for optimum broiler performance, there is still no general agreement on what the appropriate concentrations of these two minerals and/or their relative proportions should be. Though Ca and P are interrelated in many biological functions, the requirement of these minerals is interdependent (Mello et al, 2012). Commercially, broilers are rarely, if ever, fed Ca concentrations recommended by the NRC (1994) and actual Ca intake is most probably 20% below these recommendations (Driver et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Nutritional geometry of calcium and phosphorus nutrition in broiler chicks. The effect of different dietary calcium and phosphorus concentrations and ratios on nutrient digestibility

Wilkinson

Bradbury

Thomson

et al. 2014

animal

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A total of 600 Ross 308-day-old male broiler chicks were used in a 28 day digestibility study to investigate the interaction between dietary calcium (Ca) and non-phytate phosphorus (nPP) on the digestibility of minerals and amino acids. Diets were formulated to be nutritionally adequate except for Ca and nPP. Fifteen mash diets based on corn and soya bean meal with varying concentrations of Ca (6.4 to 12.0 g/kg) and nPP (2.4 to 7.0 g/kg) were used. Diets were clustered around total densities of Ca and nPP of 12, 13.5 or 15.0 (g/kg) and within each density, a range of five Ca : nPP ratios (1.14 : 1, 1.5 : 1, 2.0 : 1, 2.75 : 1 and 4.0 : 1) were fed. Birds had free access to feed and water throughout the study. At day 28, birds were euthanised for the determination of apparent ileal mineral and amino acid digestibility. Data were modelled in R version 2.15 using a linear mixed-effects model and interrogation of the data was performed by fitting a low order polynomial function. At high Ca concentrations, increasing nPP led to an increase in the apparent digestibility of minerals. Apparent ileal digestibility of phosphorus (P) was enhanced with increasing dietary nPP up to 5.5 g/kg beyond which no improvements were found. Maximal Ca digestibility was found in diets with > 8.0 g/kg Ca with concomitant low concentrations of nPP. Diets with a broader Ca : nPP ratio improved the digestibility of Ca but were deleterious to the digestibility of P. In this study, apparent digestibility of amino acids was broadly unaffected by dietary Ca and nPP concentrations. However, interactions between Ca and nPP were observed for the digestibility of glutamine, tyrosine and methionine (all P < 0.001). Nitrogen digestibility showed discrete optima around 10.0 and 5.0 g/kg nPP and Na digestibility was maximised around 8 to 9.0 g/kg Ca and 4.5 to 5.4 g/kg nPP. These data show that the ratio of Ca : nPP is more influential to mineral digestibility than the absolute dietary concentration of each macro mineral.

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“…No differences in BW and FCR were observed between the diets with different pcdP concentrations. Smilarly, (Leske and Coon, 2002;Yan and Waldroup;2006;Mello et al, 2012;Bikker et al, 2016) found that negative effect of the diets containing low P levels on growth performance. There was no differences between P sources (either DCP or MCP).…”

Section: Resultsmentioning

confidence: 99%

Dikalsiyum Fosfat ve Monokalsiyum Fosfatın Broylerlerde Presekal Fosfor Sindirilebilirliğinin Belirlenmesi

Sacaklı

Sizmaz

Pirpanahi

2020

Tavukçuluk Araştırma Dergisi

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The aim of this study was to determine the prececal phosphorus (P) digestibility of dicalcium phosphate (DCP) and monocalcium phosphate (MCP) for broiler using the linear regression method. A total of 360-d-old male Ross 308 broilers were raised until 20 days of age with a standard commercial starter diet (metabolizable energy, 3000 kcal/kg, crude protein, 22%, Ca 0.9%, P 0.6%). On 21 days of age all birds were weighed and assigned to 5 experimental treatment groups with 6 replicate cages each consisted of 12 birds. Each P source was included at two levels (to achieve increments of 0.075% and 0.15%) to the basal diet. Titanium dioxide was included at 0.5% in all diets as indigestible marker. On day 28, all birds were sacrificed and ileal digesta were collected. The prececal P digestibility of DCP and MCP were calculated by the linear regression to be 76.60% and 85.83%, respectively. The present results suggest that the P digestibility of the P sources should be considered when formulating broiler diets to achieve optimum dietary P concentrations without increasing diet cost and environmental pollution from P excretion.

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Dietary requirements of available phosphorus in growing broiler chickens at a constant calcium:available phosphorus ratio

Cited by 22 publications

References 23 publications

Precaecal phosphorus digestibility of inorganic phosphate sources in male broilers

Precaecal phosphorus digestibility of inorganic phosphate sources in male broilers

Nutritional geometry of calcium and phosphorus nutrition in broiler chicks. The effect of different dietary calcium and phosphorus concentrations and ratios on nutrient digestibility

Dikalsiyum Fosfat ve Monokalsiyum Fosfatın Broylerlerde Presekal Fosfor Sindirilebilirliğinin Belirlenmesi

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