Department of Environmental Science and Engineering, School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, China.
Institute of Chemistry, Shah Abdul Latif University, Khairpur, Sindh, Pakistan.
Environ Sci Pollut Res Int. 2019 Apr;26(10):9469-9479. doi: 10.1007/s11356-018-4000-0. Epub 2019 Feb 20.
Phosphorus is an essential macro-mineral nutrient for poultry, needed for the body growth, development of bones, genomic function, good quality flesh, and eggs production. The imbalance of organic phosphorus sources in the diet mostly affect the phosphorus digestibility, reduces the poultry performance and health, and increases the environmental pollution burden. A study was reviewed to estimate the low phytate phosphorus digestibility of ingredients in poultry diet and their impacts on environmental ecosystem and opportunity of phytase supplementation. Plant ingredients mostly used in poultry diets are rich in phytate phosphorus. The phytate phosphorus digestibility and utilization is low in the gut of birds which leads to decrease other nutrients digestibility and increase excessive excretion of phosphorus with additional nutrients in the manure. When that manure applied to the lands containing excessive residual phosphorus and additional nutrients which pollute soil, groundwater disturbed the entire ecosystem. This issue is developed by poultry due to lack of digestive enzyme phytase which promotes the phytate phosphorus during digestion and reduces the excessive losses of phosphorus in excreta. To overcome this matter, the addition of mostly exogenous phospho-hydrolytic phytase enzymes in the diet, i.e. Escherichia coli, Peniophora lycii, Aspergillus niger, and Ficum, are the possible ways to increase the digestibility and utilization of phytate phosphorus and promote the stepwise release of phosphorus from phytate and significantly decrease phosphorus excretion. The aim of this review is to highlight the role of phytase supplementation in the poultry feeding, improvement of phytate phosphorus digestibility with performance, and reduction of phosphorus pollution from the environment.
磷是家禽必需的大量矿物营养素，对其身体生长、骨骼发育、基因组功能、优质肉质和产蛋生产都非常重要。饮食中有机磷源的不平衡主要影响磷的消化率，降低家禽的生产性能和健康水平，并增加环境污染负担。本研究旨在评估家禽日粮中成分的低植酸磷消化率及其对环境生态系统和植酸酶补充的机会的影响。植物成分大多用于家禽日粮中，富含植酸磷。鸟类肠道中植酸磷的消化率和利用率低，导致其他营养物质的消化率降低，并增加粪便中磷的过量排泄和其他营养物质。当这些粪便施用于含有过量残留磷和其他污染土壤、地下水的养分的土地时，会扰乱整个生态系统。由于家禽缺乏消化酶植酸酶，导致植酸磷在消化过程中无法被利用，从而造成磷的过量损失，从而产生了这个问题。为了克服这个问题，可以在日粮中添加外源性植酸水解酶，如大肠杆菌、松口蘑、黑曲霉和麻纤维，来提高植酸磷的消化率和利用率，并促进磷从植酸中的逐步释放，从而显著减少磷的排泄。本综述旨在强调植酸酶补充在家禽饲养中的作用，提高植酸磷的消化率和生产性能，并减少磷对环境的污染。
