+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Effects of phytase B on laying performance, eggshell quality and on phosphorus and calcium balance in laying hens fed phosphorus-deficient maize-soybean meal diets



Effects of phytase B on laying performance, eggshell quality and on phosphorus and calcium balance in laying hens fed phosphorus-deficient maize-soybean meal diets



Czech Journal of Animal Science 56(9): 406-413



A study was conducted to evaluate the effects of dietary supplementation of phytase B (product of the Aspergillus niger phyB gene expressed in Trichoderma reesei) on feed intake, laying performance, eggshell quality, and on phosphorus and calcium balance in laying hens. Seventy-two, 40 weeks old Hy Line Brown hens were fed for 14 weeks the following four phosphorus-deficient (0.12% nonphytate phosphorus, NPP), maize-soybean meal-based diets: (1) calcium-deficient (2.8% Ca) control diet; (2) diet 1 + phytase B at the activity of 2.5 acid phosphatase units (AcPU/kg); (3) control diet (3.8% Ca); (4) diet 3 + phytase B at the activity of 2.5 AcPU/kg. Each dietary treatment was fed to 18 cages of hens, 1 hen/cage kept in individual cages. Hens fed the NPP- and Ca-deficient diets consumed more feed (P < 0.01) and excreted less calcium (P < 0.01) than those receiving P-deficient diets with the standard calcium level. There were no effects of calcium level on feed utilization, egg mass, egg weight, and eggshell breaking strength. Egg production, although numerically higher in hens fed low Ca diets with no enzyme added, failed to be significantly different due to the low number of hens investigated and therefore the measurement should be considered as preliminary and supplementary. Phytase B increased mean egg weight by about 7% in layers fed the NPP- and Ca-deficient diet (Ca x phytase B interaction, P < 0.05), increased shell breaking strength, particularly at the standard calcium level, significantly enhanced amounts of calcium retained by layers and amounts of phosphorus retained by hens fed the Ca-deficient diets. Additionally, phytase B improved Ca retention at both dietary Ca levels and phosphorus retention in hens fed the Ca-deficient diets. Results of the study indicate that the efficacy of phytase B in NPP-deficient diets is strongly influenced by the dietary calcium level and the enzyme may modulate egg weight, eggshell quality, phosphorus and calcium retention in laying hens fed low-NPP, maize-soybean meal-based diets.

Please choose payment method:






(PDF emailed within 1 workday: $29.90)

Accession: 066253801

Download citation: RISBibTeXText


Related references

Effects of inositol, inositol-generating phytase B applied alone, and in combination with 6-phytase A to phosphorus-deficient diets on laying performance, eggshell quality, yolk cholesterol, and fatty acid deposition in laying hens. Poultry Science 91(8): 1915-1927, 2012

The response of laying hens to phytase added to corn-soybean meal-based diets containing two levels of available phosphorus 2 Phytate phosphorus utilization. Journal of Dairy Science 84(Suppl. 1): 478, 2001

Effects of an experimental phytase on performance, egg quality, tibia ash content and phosphorus bioavailability in laying hens fed on maize- or barley-based diets. British Poultry Science 46(3): 340-348, 2005

Assessment of a phytase included with lactic acid on productive parameters and on deposition of phosphorus, calcium, and zinc in laying hens fed with sorghum-soybean-meal-based diets. Journal of Applied Animal Research 46(1): 314-321, 2017

Different calcium relations: available phosphorus and phytase in diets of UFSM-V laying hens: productive performance, egg quality and bone tissue. Ciencia Rural 41(10): 1831-1837, 2011

The effects of calcium and vitamin D3 in diet on plasma calcium and phosphorus, eggshell calcium and phosphorus levels of laying hens in late laying production period. International Journal of Poultry Science 4(8): 600-603, 2005

The response of laying hens to phytase added to corn-soybean meal-based diets containing two levels of available phosphorus. Poultry Science 80(7): 1028, 2001

Performance and nutrient utilization of laying hens fed low-phosphorus corn-soybean and wheat-soybean diets supplemented with microbial phytase. Poultry Science 84(10): 76-83, 2005

Effects of dietary calcium and phosphorus levels of dehydrated kitchen waste on laying performance and eggshell quality in hens. Japanese Journal Of Poultry Science: 2, J66-J73, 2008

Influence of phytase with different levels calcium and phosphorus in diets of laying hens on egg production and shell quality. Poultry Science 76(Suppl. 1): 142, 1997

Effects of microbial phytase supplementation on egg production, eggshell quality, and mineral retention of laying hens fed different levels of phosphorus. Poultry science 78(1): 75-79, 1999

Effects of diets containing a meal from artificially grown mussels on the utilization of calcium, phosphorus and magnesium and on egg shell quality of laying hens. Byulleten' Vsesoyuznogo Nauchno issledovatel' skogo Instituta Fiziologii, Biokhimii i Pitaniya Sel' skokhozyaistvennykh Zhivotnykh ( 3 (95)): 59-63, 1989

The influence of supplementary phytase to a phosphorus-poor ration on various performance parameters and the phosphorus balance of laying hens. Agribiological Research 50(3): 257-264, 1997

Effect of dietary microbial phytase on laying performance, egg quality, phosphorus utilization and nutrient metabolizability in laying hens. Korean Journal Of Poultry Science: 2, 115-121, 2008

Re-evaluation of calcium and phosphorus requirements of laying hens for optimum performance and eggshell quality. Poultry Science 72(1): 144-153, 1993