Casein Supplementation Does Not Affect the Estimates of True Total Tract Digestibility of Phosphorus in Soybean Meal for Growing Pigs Determined by the Regression Method

Liu, J. B.; Adeola, O.

doi:10.5713/ajas.15.0825

Cited by 4 publications

(3 citation statements)

References 22 publications

(53 reference statements)

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“…Deficiency or imbalance of CP and AA in semi-purified diets has been concerned in previous studies. Liu and Adeola (2016), however, reported that the total tract digestibility of P in SBM determined by regression analysis was not affected by the addition of casein into semi-purified diets containing SBM as the sole source of P. Pedersen et al (2007) also reported that the DE and ME contents 1 Each least squares mean represents 10 observations except for the diet containing 100 g/kg casein (9 observations).…”

Section: Discussionmentioning

confidence: 99%

Amino acid digestibility of corn distillers’ dried grains with solubles with the addition of casein in pigs1

Park

Ragland

Adeola

2018

Journal of Animal Science

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This experiment was conducted to determine the ileal digestibility of CP and AA in casein by regression analysis and to investigate the effects of casein in experimental diets on the apparent ileal digestibility (AID) and standardized ileal digestibility (SID) of CP and AA in corn distillers' dried grains with solubles (DDGS) fed to pigs. Twenty barrows (initial BW = 50.5 ± 4.46 kg) surgically fitted with T-cannulas at the distal ileum were used. Eighteen pigs were assigned to a triplicate 6 × 3 incomplete Latin Square design with 6 diets and 3 periods. Two pigs were used as replacements. Three diets were prepared to contain 60, 100, or 140 g/kg casein to determine the ileal digestibility of CP and AA in casein by regression analysis, and 2 diets were prepared to contain either 480 g/kg DDGS or 308 g/kg DDGS and 60 g/kg casein. Casein and DDGS were the sources of nitrogen (N) in experimental diets. A N-free diet was prepared based on cornstarch and dextrose. Experimental periods consisted of 5 d of adaptation and 2 d of ileal digesta collection periods. The AID of CP and AA in casein linearly increased (P < 0.01) with increasing concentration of casein in the diets. The SID of indispensable AA in casein ranged from 94.7% (SEM = 1.16) for Ile in pigs fed the diet containing 60 g/kg casein to 103.3% (SEM = 2.21) for Arg in pigs fed the diet containing 100 g/kg casein. Except for Arg, pigs fed the diet containing DDGS and casein had greater (P < 0.001) SID of CP and indispensable AA than those fed the diet containing DDGS without casein. The ileal digestibility of indispensable AA in casein determined by regression analysis ranged from 96.8% (SE = 3.14) for Thr to 103.1% (SE = 4.40) for Arg. The AID and SID of CP and AA for DDGS in the diet containing casein were calculated by difference method using the ileal digestibility of CP and AA in casein determined by regression analysis. The AID of Lys for DDGS in the diet containing casein was greater (P = 0.035) than those without casein; however, the AID of CP and the other indispensable AA, except for Arg, Phe, and Trp, for DDGS in the diet containing casein was less (P < 0.05) than those without casein. The SID of Lys and Phe for DDGS in the diet containing casein was greater (P < 0.05) than those without casein. In conclusion, improved AA composition in semi-purified experimental diets may affect the SID of AA in low-quality protein ingredients.

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Section: Discussionmentioning

confidence: 99%

Amino acid digestibility of corn distillers’ dried grains with solubles with the addition of casein in pigs1

Park

Ragland

Adeola

2018

Journal of Animal Science

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“…The assay feed ingredient was the sole source of dietary protein and P in traditional experimental diets when the regression method was applied to determine true P digestibility (Fan et al 2001;Shen et al 2002;Dilger and Adeola 2006). In contrast, highly digestible feedstuffs, such as casein and dried egg albumen, were included in test diets proposed by WPSA (2013), Liu et al (2014), Mutucumarana et al (2015) and Liu and Adeola (2016). The inclusion of casein or dried egg albumen in experimental diets was to improve the growth performance and utilisation of protein in broiler chickens, which was associated with precaecal digestion of P (Xue et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Effects of dietary total phosphorus concentration and casein supplementation on the determination of true phosphorus digestibility for broiler chickens

Abbasi

Liu

Zhang

et al. 2017

Italian Journal of Animal Science

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A study was conducted to compare the regression-driven estimates of true precaecal digestibility (TPD) of phosphorus (P) in soybean meal (SBM) for broiler chickens fed diets with or without casein supplementation at moderate or low total P concentration. A total of 768 male Ross 308 broilers were allocated to 12 diets in a 2 Â 2 Â 3 factorial arrangement of two total P concentration (moderate-P or low-P), two diet types (with or without casein) and three SBM levels (low, medium or high). There were 8 chicks per cage and 8 replicate cages per treatment group in a randomised complete block design. The birds were fed experimental diets form d 14 to 21 posthatching. Chromic dioxide was used as an indigestible marker. The results showed that dietary casein supplementation improved body weight (BW) gain, feed intake and feed efficiency of broilers (p < .01). Broilers fed the moderate-P diets had greater dietary total P intake, precaecal flow and total tract output of P, precaecal digested P, and total tract retained P compared with birds fed the low-P diets (p < .01). Dietary casein supplementation increased precaecal digested P, total tract retained P, apparent precaecal digestibility (APD) and total tract retention (TTR) of P (p < .01). Broilers fed the moderate-P diets had a linear decrease in the APD and TTR of P with increasing SBM levels (p < .01). Precaecal digested P and total tract retained P increased with graded inclusion of SBM levels (linear, p < .01). Regression of precaecal digested P against dietary P intake showed that chicks fed the moderate-P diets had lower estimates of TPD of P in SBM than that for chicks fed the low-P diets (p < .05), while dietary casein supplementation had no effects on the determined values of TPD of P. In conclusion, the regression-driven true phosphorus digestibility in assay feed ingredients for broiler chickens was affected by dietary total P concentration.

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“…They found SIPDC values of 0.623, 0.617, 0.615, and 0.444. Similarly, the digestibility of P from soybean meal was not influenced by the addition of casein in semipurified diets for broilers (Liu et al, 2014) and pigs (Liu and Adeola, 2016). In determining the ileal P digestibility of monocalcium phosphate in pigs, diets with low protein content impaired P digestibility, while P digestibility was higher in diets with higher protein levels (Xue et al, 2017).…”

Section: Discussionmentioning

confidence: 96%

Standardized ileal phosphorus digestibility of meat and bone meal and poultry byproduct meal for broilers

Dilelis¹,

Freitas²,

Quaresma³

et al. 2021

Revista Brasileira De Zootecnia

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Non-ruminantsFull-length research article Standardized ileal phosphorus digestibility of meat and bone meal and poultry byproduct meal for broilers ABSTRACT -Two experiments were conducted using direct method to determine the standardized ileal phosphorus (P) digestibility coefficient (SIPDC) of meat and bone meal (MBM) and poultry byproduct meal (PBM) for broilers. In the first experiment, three MBM from different batches were evaluated, with four treatments (MBMI, MBMII, MBMIII, and a P-free diet) and nine replicates of seven birds each, totaling 252 birds distributed across a completely randomized design. The P-free diet was used to determine endogenous P losses. Titanium dioxide (5 g kg −1 ) was used as an indigestible indicator. In the second experiment, three PBM from different batches were evaluated, with 189 birds distributed over three treatments (PBMI, PBMII, and PBMIII) and nine replicates of seven birds each. These two experiments were conducted when birds were 19-22 days old. The birds were euthanized to collect the ileal content. Using the P-free diet, endogenous P losses were determined at 94.9 mg kg −1 dry matter intake. Standardized ileal P digestibility of MBMI (0.65) and MBMIII (0.69) was higher compared with MBMII (0.49). The SIPDC determined for three PBM sources were similar and 0.96, 0.96, and 0.93 for PBMI, PBMII, and PBMIII, respectively. The present study demonstrates that P in MBM is not as available as it is believed and that the variability between batches should be considered by nutritionists, while PBM can be considered an excellent P source to broiler diets.

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Casein Supplementation Does Not Affect the Estimates of True Total Tract Digestibility of Phosphorus in Soybean Meal for Growing Pigs Determined by the Regression Method

Cited by 4 publications

References 22 publications

Amino acid digestibility of corn distillers’ dried grains with solubles with the addition of casein in pigs1

Amino acid digestibility of corn distillers’ dried grains with solubles with the addition of casein in pigs1

Effects of dietary total phosphorus concentration and casein supplementation on the determination of true phosphorus digestibility for broiler chickens

Standardized ileal phosphorus digestibility of meat and bone meal and poultry byproduct meal for broilers

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