Use of phytases in fish and shrimp feeds: a review

Abstract

Phytases have been employed in animal feeds for several years, used primarily for reducing the environmental impact and phosphorus loads of farm effluents. Beneficial effect of dietary phytase has been associated with the limited ability of monogastric animals to utilize dietary plant phytates. To date, numerous studies have shown the positive effect of phytase supplementation on the availability of dietary phosphorus and trace minerals within plant-based feeds for monogastric farm animals, including farmed fish and shrimp. Individual feed ingredients may also be improved with phytases as an exogenous treatment, also termed pre-conditioning dephytinization prior to mixing. This review presents data on the potential benefit of phytase application for fish and shrimp species in improving digestibility of phosphorus and other minerals as well as organics nutrient fractions such as protein, amino acids and lipids.

Combined effects of exogenous enzymes and probiotic on Nile tilapia (Oreochromis niloticus) growth, intestinal morphology and microbiome

“…The previous reports on the use of exogenous digestive enzymes (Cao et al, 2007, Kumar et al, 2012, Castillo and Gatlin, 2015, Lemos and Tacon, 2016 and probiotic (Pandiyan et al, 2013, Pérez-Sánchez et al, 2014 as individual supplement in fish diet abounds. However, to the authors' knowledge no research has been conducted previously on the combined effects of exogenous digestive enzymes and probiotic on growth, intestinal morphology and microbiome of Nile tilapia.…”

“…Research into the use of exogenous digestive enzyme and probiotic supplements is increasing since aquafeed manufacturers are increasingly interested in producing 'functional and environmentally friendly aquafeeds'. The potential effects of exogenous digestive enzymes (Kumar et al, 2012, Castillo and Gatlin, 2015, Lemos and Tacon, 2016 and probiotic (Pérez-Sánchez et al, 2014) on fish have been reviewed as individual supplement. To the authors' understanding, there is no previous report on combined used of exogenous digestive enzymes and probiotic as supplement in fish.…”

Bioprocess for Production, Characteristics, and Biotechnological Applications of Fungal Phytases

“…Fungal phytase is not only used in the poultry and pig raising industries, but also in fisheries. Several studies on phytase supplementation in fish feed have involved different fish species Lemos and Tacon, 2017). For example, Yan et al (2002) studied the effects of phytases at levels from 0 to 8,000 FTU/kg (A. niger phytase) in channel catfish (Ictalurus punctatus).…”

Fulfilling the Potential of Probiotics, Prebiotics, and Enzymes as Feed Additives for Aquaculture

“…The enzyme phytase has been effectively incorporated into poultry and swine (Humer et al ) and aquaculture feeds (Lemos and Tacon ) and has notably improved the utilization of phosphorus found in plant‐derived meals that are used as sources of dietary protein. The use of carbohydrases in the feeds of different fish species has yielded mixed results, some of which may be found in differences in digestive physiology or simply differences in methodological approach (Castillo and Gatlin ).…”