Effect of dietary calcium concentrations in phytase-containing diets on growth performance, bone mineralization, litter quality, and footpad dermatitis score in broiler chickens

Kim, Jong Hyuk; Han, Gi Ppeum; Shin, Ji Eun; Kil, Dong Yong

doi:10.1016/j.anifeedsci.2017.04.008

Cited by 25 publications

(17 citation statements)

References 27 publications

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“…Tibia biomechanical characteristics -such as bone breaking strength, bone density, bone mineral content and bone ash (Kwiecień, et al, 2016;Kim et al, 2017) are usually used as indicators of mineral adequacy in broiler diets. In the current study, the marginal increase in the parameters could be owing to the increased availability of Ca and P provided by canola in diets.…”

Section: Discussionmentioning

confidence: 99%

“…The inclusion of exogenous enzymes in poor nutrient sources may ensure effective release and assimilation of nutrients and minerals in the gut, stimulating efficient nutrient utilization and, more importantly, promoting active bone growth (Ozturk et al, 2010;Kim et al, 2017). On the other hand, organic acids, including humic acids, have variable physical and chemical properties that allow them to influence gastronomic functions of feed in poultry.…”

Section: Introductionmentioning

confidence: 99%

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Humic acid and enzymes in canola-based broiler diets: Effects on bone development, intestinal histomorphology and immune development

Disetlhe¹,

Marume²,

Mlambo³

et al. 2017

SA J. An. Sci.

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The objective of the study was to investigate the effects of dietary inclusion of humic acid and enzymes on bone development, histomorphology of internal organs and the incidence of rickets in broiler chickens fed canola-based diets. In the study, Cobb 500 broiler chicks were used and the following five dietary treatments were administered: control (commercial diet); CM (17.5% canola meal inclusion); CMEnz (17.5% CM inclusion + 0.3g/kg Axtra XAP); CMPh (17.5% CM inclusion + 1.5% potassium humate (PH)); and CMEnzPh (17.5% CM inclusion + 1.5% PH + 0.3g/kg Axtra XAP). These diets were formulated and randomly allocated to 20 pens (experimental units), each housing 11 birds. The birds were phase fed, with the starter diet being given to all birds from day 1 to day 14. During the grower (days 15-28) and finisher phases (days 29-42) birds were fed the experimental diets. Diet differed significantly across all treatments on latency-to-lie (LTL) test. Broilers fed CMEnz had the lowest standing persistence (2.88 ± 2.69 min) and those on CMEnzPh had the highest (11.19 ± 2.69 min), followed by those offered the control diet (9.05 ± 2.69 min). Gross lesion analysis displayed high prevalence of rickets in boilers fed CMEnz diet compared with all other dietary treatments. Intestinal morphometric parameters demonstrated some dietary differences in the height and width of the intestinal villi and intestinal crypts. In conclusion, inclusion of humic acid in canola-based diets appeared to positively influence digestion and assimilation dynamics that were consequential to the improvement in bone and immune development in broilers. ______________________________________________________________________________________

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Humic acid and enzymes in canola-based broiler diets: Effects on bone development, intestinal histomorphology and immune development

Disetlhe¹,

Marume²,

Mlambo³

et al. 2017

SA J. An. Sci.

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“…Diaz-Alonso et al (2019) reported that, when Ca level adjusted to 2:1 Ca to NPP ratio there was no differences on performance and tibia ash (%) for broilers at level of Ca 0.46% or 0.86%. Fallah et al (2019) showed that, at early age of broilers, above Ca level at 0.85% is deteriorate performance when NPP fixed at 0.40% and Kim et al (2017) reported that, Ca level increase in diet from 0.60% to 1.00% is also deteriorate broiler performance when NPP fixed at 0.30%. Although there are some studies in recent years focussing on dietary Ca and P optimisation, most of them was involved for specific age period and a few of them was conducted through all feeding phase.…”

Section: Introductionmentioning

confidence: 99%

Response of modern broiler chickens to dietary calcium and phosphorus levels below recommendations

Ceylan

Koca²,

Yavaş

et al. 2020

Italian Journal of Animal Science

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This study was carried out to investigate the effects of reduced dietary calcium (Ca) and non-phytate-phosphorus (NPP) levels on performance, carcase yield and bone mineralisation of modern broilers. 11,200 one-day-old chicks (Ross-308) were divided into 7 treatments and 8 replicates with standard recommended level and six different levels of Ca and NPP reduction with completely randomised block design. Treatments were divided into following diets; T1: ross recommended control, T2: 94%, 95% and 91% as percentage of T1, T3: 94%, 95% and 83% as percentage of T1, T4: 94%, 91% and 83% as percentage of T1, T5: 94%, 91% and 77% as percentage of T1, T6: 94%, 86% and 83% as percentage of T1 and T7: 94%, 86% and 77% as percentage of T1 for starter, grower and finisher periods, respectively. Results showed that, the Ca and NPP reduction (T2-T7) through starter period did not significantly (p>.05) affect performance but when considered whole period, quadratically (p<.05) improved body weight gain (BWG), feed conversion ratio (FCR) and European Production Efficiency (EPEF). In line with, Ca and NPP intakes were decrease linearly and quadratically with Ca and NPP reducing in diet and higher intakes at T1 resulted in impaired BWG and FCR. On the other hand, carcase parameters and tibia mineralisation were not significantly affected by the reductions. In conclusion, Ca and NPP requirements of Ross 308 broilers seem to be lower than the Aviagen 2014 and 2019 recommendations and reducing almost 20% Ca and NPP intake of broilers is possible, especially after starter period, to maintain performance without any negative effect on bone development. HIGHLIGHTS Excessive dietary Ca and P feeding have potential deleterious effects on broilers. Dietary Ca and NPP reduction improved growth performance, without impairment bone characteristics. Especially after starter period, Ca and NPP reduction, by keeping the dietary levels as 0.90:0.45, 0.75;0.38 and 0.60;0.30% for starter, grower and finisher phase respectively, seems enough for Ross-308.

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“…[ 38 ] reported that conventionally used dietary Ca levels in broiler diets (0.9%) resulted in the reduction of intestinal phytase activity and in apparent ileal PP hydrolysis compared with a lower level of Ca (0.4%). Increasing Ca concentration in phytase-supplemented diets caused a linear decrease in the BWG, FI, and feed efficiency in broiler chicken [ 39 ]. Tamim et al .…”

Section: Discussionmentioning

confidence: 99%

Effect of immobilized fungal phytase on growth performance and bone traits of broilers fed with low dietary calcium and phosphorus

Ajith¹,

Shet²,

Ghosh³

et al. 2018

Vet World

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Aim:The aim of this study was to investigate the effects of phytase which was laboratory produced by Aspergillus foetidus on the growth performance, mineral retention, and bone traits of broilers fed with low dietary calcium and phosphorus.Materials and Methods:The extracellular phytase enzyme secreted into the crude filtrate was concentrated by ammonium sulfate precipitation to obtain an activity of 500 phytase units (FTU). A total of 90 1-day-old chicks (Cobb 500) were randomly divided into three treatment groups with five replicates having six birds each. Dietary treatment, T1, was with 0.45% non-phytate P (NPP) during starter and 0.40% during finisher phase with 1% Ca. Dietary treatment, T2, had 0.37% NPP during starter and 0.32% in finisher phase with 1% Ca and supplemental lab phytase at 500 FTU/kg. Dietary treatment, T3, was similar to T2 with a lower Ca of 0.8%.Results:There was no significant difference among the dietary treatments with regard to body weight gain, feed intake, feed conversion ratio, and Ca retention (p>0.05). However, a significant improvement in retention of P by birds was observed in phytase supplemental groups T2 and T3 (p<0.05). Dry weight of tibia (2.58-2.78 g/kg live weight) and ash content (39.7-41.8%) was comparable among treatments. A similar trend was observed for bone Ca, P, and Mn content.Conclusion:The study indicated that 500 FTU/kg phytase can be effectively supplemented in a broiler diet with low phosphorus (0.37% in starter and 0.32% NPP in finisher diet) and low calcium (0.8% in diet) for better growth performance and with successful replacement of dietary P by 0.08 % and reduced P excretion into the environment in broiler chicken.

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Effect of dietary calcium concentrations in phytase-containing diets on growth performance, bone mineralization, litter quality, and footpad dermatitis score in broiler chickens

Cited by 25 publications

References 27 publications

Humic acid and enzymes in canola-based broiler diets: Effects on bone development, intestinal histomorphology and immune development

Humic acid and enzymes in canola-based broiler diets: Effects on bone development, intestinal histomorphology and immune development

Response of modern broiler chickens to dietary calcium and phosphorus levels below recommendations

Effect of immobilized fungal phytase on growth performance and bone traits of broilers fed with low dietary calcium and phosphorus

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