scholarly journals Effect of dietary calcium concentrations in low non-phytate phosphorus diets containing phytase on growth performance, bone mineralization, litter quality, and footpad dermatitis incidence in growing broiler chickens

2017 ◽  
Vol 30 (7) ◽  
pp. 979-984 ◽  
Author(s):  
Jong Hyuk Kim ◽  
Hyunjung Jung ◽  
Franco Martinez Pitargue ◽  
Gi Ppeum Han ◽  
Hyeon Seok Choi ◽  
...  
Keyword(s):  
Growth Performance ◽  
Broiler Chickens ◽  
Litter Quality ◽  
Bone Mineralization ◽  
Dietary Calcium ◽  
Phytate Phosphorus

scholarly journals Dietary Calcium to Digestible Phosphorus Ratio for Optimal Growth Performance and Bone Mineralization in Growing and Finishing Pigs

Animals ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 178 ◽  
Author(s):  
Patrick Schlegel ◽  
Andreas Gutzwiller
Keyword(s):  
Growth Performance ◽  
Mineral Content ◽  
Bone Mineralization ◽  
Dietary Calcium ◽  
Phosphate Removal ◽  
Volumetric Density ◽  
Dietary Phosphorus ◽  
Maximal Load ◽  
Bone Properties ◽  
Bone Ash

Within the context of maximizing the use of dietary phosphorus, a growing-finishing pig study was conducted to determine the optimal total dietary calcium (Ca) to digestible phosphorus (dP) ratio and to verify the possibility of mineral phosphate removal during the finishing period on growth performance and mineral status. The potential for replacing chemical and mechanical bone properties by dual energy X-ray absorptiometry (DXA) measures on non-dissected feet was also verified. Three Ca to dP ratios (2.2:1, 2.5:1 and 2.8:1) within two dP levels (P+, P–) were fed during 91 days to 84 pigs. The grower and finisher P+ diets contained 3.0 and 2.4 and P– diets contained 2.5 and 1.7 g dP/kg, respectively. Growth performance and blood serum mineral content were independent of treatments, except that 2.2:1 impaired finisher feed conversion ratio compared to 2.5:1 and 2.8:1. Urinary P concentration increased by 37% in 2.2:1 compared to 2.5:1 and 2.8:1. Maximal load on bone and DXA mineral density were reduced in 2.2:1 compared to 2.8:1. Bone ash and volumetric density were reduced in 2.2:1 and 2.5:1 compared to 2.8:1. Diet P– reduced bone ash, maximal load, volumetric density and DXA bone mineral content and density. No interaction was observed between Ca and dP level. Therefore, 2.2:1 was insufficient for an efficient metabolic use of P, 2.5:1 was sufficient to maximize growth performance and 2.8:1 further improved bone mineralization. Increasing dietary Ca did not impair bone zinc content. Diets P– without supplemented mineral phosphates during the finisher period resulted, per pig, in a decrease of its use by 65% and of the calculated P excretion by 41%, without impaired growth performance. Finally, DXA data responded to dietary treatments as did labor intensive chemical and mechanical bone properties.

scholarly journals Kebutuhan Kalsium Ayam Broiler Fase Starter dengan Penambahan Enzim Fitase

2016 ◽  
Vol 40 (3) ◽  
pp. 170
Author(s):  
Eny Sholikhatin ◽  
Ferry Poernama ◽  
Nanung Danar Dono ◽  
Zuprizal .
Keyword(s):  
Body Weight ◽  
Growth Performance ◽  
Feed Efficiency ◽  
Broiler Chickens ◽  
Bone Mineralization ◽  
Body Weight Gain ◽  
Basal Diet ◽  
Beneficial Effects ◽  
Randomized Design ◽  
Bone Ash

The aim of this study was to determine the calcium requirements of broiler chickens in starter phase with the addition of phytase enzyme. This experiment used 1,200 broiler chickens (mixed sex) for 21 days rearing period in a closed house. The basal diets was corn and soybean meal which contained 0.097% Ca and 0.123% P-av. The treatments consisted of 6 diets treatment: P1 (basal diet with the addition of 0.42% non-phytate phosphorus (NPP), and then P2 to P6 were basal diet with the addition of 0.22% NPP and 1,000 FTU/kg phytase and the addition of calcium (Ca) at different levels: 0.82% (P2); 0.74% (P3); 0.66% (P4); 0.58% (P5) and 0.50% (P6). The growth performance, feed efficiency, and bone mineralization parameters were studied using Oneway ANOVA in a Completely Randomized Design. Duncan's new Multiple Ranges Test was used to separate means with significant differences. Results showed that 0.90% Ca supplementation without phytase and the reduction levels of Ca from 0.82% to 0.50% increased the amount of feed consumed by birds in all growth phases (P<0.05). The addition of phytase had beneficial effects on increasing body weight (P<0.05) and average of body weight gain (P<0.05), and decreased the value of FCR in 11 - 21 days and 1 - 21 days. The addition of phytase increased protein and energy consumption, followed by increased in the value of PER and  EER (P<0.05). When phytase was added in the diets, reduction levels of Ca in the diets up to 0.50% did not give any adverse effect on the tibia bone ash. It can be concluded that feeding with phytase can sustain growth performance, feed efficiency, and bone mineralization.

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