Reaction of laying hens to low phosphorus diets and addition of different phytase preparations
نویسندگان
چکیده
منابع مشابه
Influence of Supplemental 25-hydroxy- Cholecalciferol and Phytase on Production Performance of Laying Hens Fed Diets Low in Phosphorus
s of papers 11 42 Phosphorus efficacy of an E. coli phytase in young chicks. N.R. Augspurger*1, D.M. Webel2, X.G. Lei3, and D.H. Baker1, 1University of Illinois at Urbana-Champaign, 2United Feeds, Inc., Sheridan, IN, 3Cornell University, Ithaca, NY. Three assays were done to investigate the phosphorus (Pi)-releasing efficacy of an E. coli phytase (ECP, produced by Phytex LLC), relative to Natup...
متن کاملPerformance and nutrient utilization of laying hens fed low-phosphorus corn-soybean and wheat-soybean diets supplemented with microbial phytase.
Two experiments were conducted with laying hens (Lohmann Brown) in an individual cage system and with single feeding conditions. Experiment 1 (n = 24) was a performance trial (22 to 61 wk) to evaluate phytase effects on performance and nutrient utilization in corn-soybean meal (CSM1) and wheat-soybean meal (WSM1) basal diets (0.12% NPP; 3.1% Ca) supplemented (300 U/kg) with an experimental micr...
متن کاملEffects of phytase B on laying performance, eggshell quality and on phosphorus and calcium balance in laying hens fed phosphorus-deficient maize-soybean meal diets
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 p...
متن کاملEffect of dietary available phosphorus and phytase on production performance of old laying hens and tibia bone quality
Background: Old laying hens are more prone to dietary calcium (Ca) and phosphorus (P) deficiencies as they absorb Ca and P less efficiently than younger hens. OBJECTIVES: In a 2×2 factorial design, the influence of diets with two levels of available phosphorus (AP) and phytase enzyme on the laying performance, egg quality and tibia bone characteristics of laying hens at their late 2nd producti...
متن کاملThe effects of various dietary levels of phytase and available phosphorus on performance of laying hens.
Data previously obtained from our laboratory indicated that addition of 300 U of phytase/kg diet supported optimal long-term performance of laying hens (20 to 70 wk) fed a corn-soybean meal (SBM) diet containing 0.10% available phosphorus (AP). Our primary objective was to determine if a phytase level lower than 300 units/kg is adequate for a commercial strain of Single Comb White Leghorn layin...
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ژورنال
عنوان ژورنال: Journal of Animal and Feed Sciences
سال: 2003
ISSN: 1230-1388
DOI: 10.22358/jafs/67664/2003