Impact of Phytase Supplementation in Restricted Calcium and Phosphorus Broiler Diets on Performance, Blood Parameters and Bone Characteristics

Mohamed, Yaser Saad; Abdel-Azeem, F.; Thabel, Hany; Hassan, Amal A.

doi:10.21608/ajs.2020.26468.1182

Cited by 2 publications

(5 citation statements)

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“…Our results are comparable to those of Zhu et al (2018), who found that lowering the ratio of dietary calcium to Nonphytate phosphorus reduced live body weight considerably. During the starter and grower stages, reducing dietary calcium and Nonphytate phosphorus to 50% of the NRC (1994) had no impact on body weight (Mohamed et al 2020). The findings of the current study are contradictory to the findings of Imari et al (2020) those who reported that during the starting phase of broiler, reducing dietary calcium and Nonphytate phosphorus to 10% to 30% of the recommended quantity lowered body weight.…”

Section: Live Body Weightcontrasting

confidence: 99%

“…The findings of the current study are comparable to those of Zhu et al (2018), who found that reducing the ratio of dietary calcium to Nonphytate phosphorus reduced feed intake considerably. Further, the results of this study are also in agreement with the findings of Mohamed et al (2020), andImari et al (2020) who reported a nonsignificant effect of dietary inclusion of calcium and Nonphytate phosphorus on feed consumption at the early stage of growth and other growth phases.…”

Section: Feed Intakesupporting

confidence: 92%

“…Further, Ca and P interaction also did not show any significant impacts on feed conversion ratio (Table 5), except for the 2nd week, where the higher feed conversion ratio was attained with 0.60 Ca and 0.40 P combination (P =0.011). According to Mohamed et al (2020) reducing dietary calcium and Nonphytate phosphorus to up to 50% of the NRC (1994) recommended amounts during the starter and grower stages did not affect the feed conversion ratio. The results of this study are contradictory to the findings of Imari et al (2020) those who reported a 10% to 30% reduction in the recommended amount of dietary calcium and Nonphytate phosphorus during the post-starter, starter, and finisher periods of broilers did not influence FCR.…”

Section: Feed Conversionmentioning

confidence: 93%

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Influence of Calcium and Nonphytate Phosphorus (NPP) on Meat-Type Quail’s Growth, Carcass Features, and Tibia Indices

Al-Ghamdi

2022

J Exp Bio & Ag Sci

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This study aimed to evaluate the role of increasing dietary calcium (Ca) and non-phytate phosphorus (NPP) supplementation on the growth, carcass, edible portions, and tibia indicators of growing quail. The current study was conducted in a 3×3 factorial design, for this, 360 1-wk-old quails were haphazardly assigned to nine groups, each group is with three gradual levels of Ca (0.60, 0.90, and 1.20 %) and NPP (0.20, 0.40 and 0.60 %). Each group was divided into five replicates with eight-quail each. Results of the study suggested that except at 2 and 6 weeks of age, dietary Ca level did not exhibit any significant (P > 0.05) impact on body weight. Similarly, in the case of NPP, apart from the live weight at 2 and 3 weeks of age, NPP did not have a significant impact on live body weight. Further, in comparison to the low Ca level, the moderate or high Ca levels have higher values of body weight gain. During all the experiments, dietary Ca, NPP, or their mixtures had no significant (P > 0.05) impact on feed consumption. Similarly, feed conversion rate and carcass metrics were also not affected by the individual or combined application of Ca or NPP supplementation Similarly, dietary intakes of Ca or P did not have any significant effect on the various tibia indicators (P > 0.05). Results of the study can be concluded that the effect of the Ca and NPP levels in Japanese quail diets is lowered and it does not much affect the growth rate, feed utilization, carcass yields, edible components, or tibia indices.

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Section: Live Body Weightcontrasting

confidence: 99%

Section: Feed Intakesupporting

confidence: 92%

Section: Feed Conversionmentioning

confidence: 93%

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Influence of Calcium and Nonphytate Phosphorus (NPP) on Meat-Type Quail’s Growth, Carcass Features, and Tibia Indices

Al-Ghamdi

2022

J Exp Bio & Ag Sci

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“… Imari et al (2020) noted that Ca, P, and ALP levels in the blood serum of broilers were not significantly influenced by a restriction of dietary Ca and available P at 10 and 42 days of age. Conversely, Mohamed et al (2020) showed that plasma concentrations of Ca, AST, and ALT were not significantly affected by a dietary Ca and NPP restriction of up to 50% of the recommended levels, whereas plasma P concentrations were significantly decreased.…”

Section: Resultsmentioning

confidence: 86%

“…Wang (2011) recorded no significant changes in the BWG, FI, and FCR of Shitou geese fed diets containing different levels of Ca (0.65%, 0.95%, and 1.25%) and available phosphorus from 29 to 70 days of age. Mohamed et al (2020) showed that BW, BWG, FI, and FCR were not significantly affected by restricting dietary Ca and NPP by up to 50% of the levels recommended by the NRC (1994) during the starter and grower periods. In contrast to our findings, Imari et al (2020) found that restricting the dietary Ca and available P (to 10%–30% of the recommended levels) during the starter period of broilers significantly decreased BW, BWG, and FI, whereas FCR was not affected; BWG, FI, and FCR were not significantly affected during the finisher and post-starter periods.…”

Section: Resultsmentioning

confidence: 88%

Effect of dietary calcium and phosphorus levels on growth, carcass characteristics and liver and kidney functions of growing Egyptian geese

et al. 2021

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The present study investigated the effect of different dietary levels of calcium ( Ca ) and non-phytate phosphorus ( P ) on the growth performance, carcass characteristics, and blood components of growing geese. A total of 120, 4-wk-old Egyptian goslings with similar body weights were randomly distributed to four groups in a 2 × 2 factorial arrangement, which included 2 levels of Ca (0.85% and 0.70%) and 2 levels of non-phytate P (0.45% and 0.35%). Each group was subdivided into 6 replicates of five birds. The experiment lasted 8 wk, from 4 to 12 wk of age. Results show that dietary Ca level had no significant effect on any of the studied growth performance traits over the full experimental period. Dietary P level also had no significant impact on these traits, with the exception of daily body weight gain and feed conversion ratio at 8 to 12 wk of age; these improved significantly with the low P diet. Geese received a diet containing 0.70% Ca + 0.45% P had the lowest body weight values at 12 wk of age and the lowest daily body weight gain, and feed intake at 8 to 12 weeks of age. While, the lowest value of feed conversion ratio was recorded in geese fed low level of Ca with low level of P (0.70% Ca + 0.35% P). There were no significant effects of the different dietary levels of Ca, P, or their interaction on all studied carcass parameters. Low dietary Ca level significantly increased the plasma levels of total protein, albumin, alanine transaminase ( ALT ), aspartate transaminase ( AST ), and creatinine and significantly decreased the plasma levels of Ca and P. Different dietary P levels had no significant effect on plasma levels of albumin, AST, ALT, ALP, and urea, whereas the 0.35% P-based diet significantly decreased the plasma contents of total protein, creatinine, Ca, and P. Plasma levels of albumin, creatinine, urea, Ca, and P were not affected by an interaction between Ca and P. Diets containing 0.70% Ca and 0.45% P lead to the highest plasma values for total protein, ALT, AST, and ALP compared with the other dietary Ca and P combinations. In conclusion, dietary Ca and P levels can be simultaneously reduced without negative impacts on growth performance, carcass characteristics, or blood biochemical components. We advise to avoid increasing the dietary Ca: P ratio, as it leads to negative effects on growth performance and blood biochemistry in growing geese. So, the findings of the current study recommended the low levels of Ca (0.70%) and non-phytate P (0.35%) for the performance of Egyptian geese during the fattening period.

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Impact of Phytase Supplementation in Restricted Calcium and Phosphorus Broiler Diets on Performance, Blood Parameters and Bone Characteristics

Cited by 2 publications

References 0 publications

Influence of Calcium and Nonphytate Phosphorus (NPP) on Meat-Type Quail’s Growth, Carcass Features, and Tibia Indices

Influence of Calcium and Nonphytate Phosphorus (NPP) on Meat-Type Quail’s Growth, Carcass Features, and Tibia Indices

Effect of dietary calcium and phosphorus levels on growth, carcass characteristics and liver and kidney functions of growing Egyptian geese

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