{"doi":"10.1093/ps/83.6.962","title":"Evaluation of Microbial Phytase in Broiler Diets","abstract":null,"journal":"Poultry Science","year":2004,"id":673654,"datarank":0.7838620010569803,"base_score":5.225746673713202,"endowment":5.225746673713202,"self_citation_contribution":0.7838620010569803,"citation_network_contribution":0.0,"self_endowment_contribution":0.7838620010569803,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":185,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":null,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":1760035,"name":"E.M. Onyango","orcid":null,"position":1,"is_corresponding":false},{"id":1760036,"name":"J.S. Sands","orcid":null,"position":2,"is_corresponding":false},{"id":1760037,"name":"O. Adeola","orcid":null,"position":3,"is_corresponding":false},{"id":1760034,"name":"R.N. Dilger","orcid":null,"position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"resolved":true,"title":"Evaluation of Microbial Phytase in Broiler Diets","abstract":"Two trials were conducted to evaluate the efficacy of a new microbial phytase (Phyzyme XP) for broiler chicks. Trial 1 used 192 8-d-old male broilers in a 14-d trial to assess growth and nutrient utilization. Dietary treatments (221.9 g/kg CP) included a positive control [5.0 g/kg nonphytate P (NPP)], negative control (1.2 g/kg NPP), and negative control plus 500 or 1,000 phytase units/kg of diet. Phytase addition increased weight gain, feed intake, feed efficiency, and tibia and toe ash (linear, P < 0.01) with tibia ash also responding quadratically (P < 0.05). Apparent ileal digestibility of P (linear and quadratic, P < 0.05), tryptophan, and valine (linear, P < 0.05) also increased. Linear and quadratic responses were observed for retention of DM, nitrogen, P, and several amino acids (P < 0.05) with added phytase. Trial 2 utilized 576 1-d-old male broilers over a 42-d period to evaluate growth performance. Diets were formulated for starter (222.7 g/kg CP) and grower (201.5 g/kg CP) phases and included a positive control (starter and grower, 5.0 and 3.8 g/kg NPP, respectively); negative control (starter and grower, 2.4 and 1.8 g/kg NPP, respectively); negative control plus 500, 750, or 1,000 phytase units/kg; and negative control plus 500 phytase units/kg of Natuphos phytase. Phytase increased weight gain and feed intake (starter, grower, overall) as well as feed efficiency during the starter period (linear, P < 0.05). Feed intake was also improved during the grower period and overall (quadratic, P < 0.05). Tibia and toe ash of birds fed for the first 21 d increased (linear, P < 0.05) with tibia ash also increasing quadratically (P < 0.05). Overall, tibia and toe ash were improved due to phytase addition (linear and quadratic, P < 0.05). In conclusion, this microbial phytase, derived from Escherichia coli and expressed in Schizosaccaromyces pombe, elicited improved growth performance, bone mineralization, and P utilization in broiler chicks.","is_dataset_classified":null,"base_score":0.0,"endowment":0.0,"datacite_reuse_total":0,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"15206623","pmcid":null,"openalex_id":null,"authors":[],"funders":[],"total_grants":0,"fwci":null,"citation_percentile":null,"influential_citations":0,"citation_trend":[],"oa_status":"hybrid","license":"cc-by-nc-nd","oa_locations":[{"url":"https://www.sciencedirect.com/science/article/pii/S0032579119426369/pdf","host_type":"publisher"},{"url":"https://api.elsevier.com/content/article/PII:S0032579119426369?httpAccept=text/xml","host_type":"publisher"},{"url":"https://api.elsevier.com/content/article/PII:S0032579119426369?httpAccept=text/plain","host_type":"publisher"},{"url":"http://academic.oup.com/ps/article-pdf/83/6/962/4415072/poultrysci83-0962.pdf","host_type":"publisher"}],"fields_of_study":["6-Phytase","Animal Nutritional Physiological Phenomena","Animals","Calcification, Physiologic","Chickens","Diet","Digestion","Eating","Escherichia coli","Ileum","Minerals","Phosphorus","Recombinant Proteins","Schizosaccharomyces","Tibia","Weight Gain"],"mesh_terms":["6-Phytase","Animal Nutritional Physiological Phenomena","Animals","Calcification, Physiologic","Chickens","Diet","Digestion","Eating","Escherichia coli","Ileum","Minerals","Phosphorus","Recombinant Proteins","Schizosaccharomyces","Tibia","Weight Gain"],"keywords":[],"sdg_mappings":[],"linked_datasets":[],"clinical_trials":[],"software_tools":[],"database_accessions":[],"source":"live","citation_network_status":"fetched"},"created_at":"2026-08-16T14:07:10.158018Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}