title: Effects of freeze-dried Mitsuokella jalaludinii culture and Natuphos(®)  phytase supplementation on the performance and nutrient utilisation of broiler chickens.
abstract: BACKGROUND
  Phytate-bound phosphorus (P) in poultry diets is poorly available to chickens. Hence exogenous phytase is often added to their diets. Mitsuokella jalaludinii is a rumen bacterial species that produces high phytase activity. In this study the effects of freeze-dried active M. jalaludinii culture (FD-AMJC) and Natuphos(®) phytase (phytase N) supplementations on the growth performance and nutrient utilisation of broiler chickens fed a low-available P (aP) diet were evaluated.
  
  
  RESULTS
  Supplementation of FD-AMJC or phytase N to the low-aP diet improved the feed intake, feed conversion rate, body weight gain, dry matter (DM) digestibility and P, Ca and Mn retention, increased the tibia bone ash content, Ca and P concentrations in tibia DM and P and Zn concentrations in plasma and reduced the P excretion of broiler chickens. However, the feed conversion rate, P and Ca retention, DM digestibility and reduction of P excretion were better with FD-AMJC than phytase N supplementation. Supplementation of FD-AMJC to the low-aP diet also improved the apparent metabolisable energy value of the diet, Cu and Zn retention and crude protein digestibility, but phytase N supplementation did not.
  
  
  CONCLUSIONS
  FD-AMJC supplementation was more efficient in improving nutrient utilisation and reducing P excretion in chickens than phytase N supplementation.
authors.affiliation: Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia.
authors.forename: Ganqiu
authors.initials: G
authors.lastname: Lan
authors.forename: Norhani
authors.initials: N
authors.lastname: Abdullah
authors.forename: Syed
authors.initials: S
authors.lastname: Jalaludin
authors.forename: Yin Wan
authors.initials: YW
authors.lastname: Ho
mesh_terms: D010832:6-Phytase / Q000378:metabolism / Q000494:pharmacology*; D000821:Animal Feed / Q000032:analysis; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D002645:Chickens / Q000254:growth & development* / Q000378:metabolism*; D004032:Diet / Q000662:veterinary*; D004044:Dietary Proteins / Q000032:analysis / Q000378:metabolism; D019587:Dietary Supplements; D004063:Digestion / Q000502:physiology; D005612:Freeze Drying; D008903:Minerals / Q000097:blood; D045854:Veillonellaceae / Q000502:physiology*
chemical_list: D004044:Dietary Proteins; D008903:Minerals; D010832:6-Phytase