Nonphytate phosphorus requirement of laying hens with and without phytase on a phase feeding program

An experiment was conducted to reevaluate the nonphytate P (NPP) requirement of laying hens with and without phytase. The experiment involved 12 treatments in a 6 x 2 factorial design. The hens of the control group (T1) were fed a sequence of 0.40-0.35-0.30% NPP during 30 to 42, 42 to 54, and 54 to...

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Veröffentlicht in:	Poultry science 2000-05, Vol.79 (5), p.748-763
1. Verfasser:	Keshavarz, K
Format:	Artikel
Sprache:	eng
Schlagworte:	6-Phytase - administration & dosage 6-Phytase - metabolism Age Factors Animal Feed Animals Body Weight Calcium - metabolism Calcium - physiology Chickens - metabolism Chickens - physiology Digestion - physiology Eating Egg Shell - chemistry Eggs - analysis Feces - chemistry Female Nitrogen - analysis Nutritional Requirements Oviposition Phosphorus - metabolism Phosphorus - standards Phytic Acid - metabolism Specific Gravity Tibia - chemistry
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