Effect of phytase supplementation on growing pigs performance

Abstract

Dietary concentrations of phytate are crucial for its anti-nutritive properties and its negative impact on P availability. The increase of dietary phytate level is shown to increase endogenous losses of amino acids and minerals in pigs. The partial availability of the P component of phytate to simple-stomached species attains importance as the world's rock phosphate reserves are not renewable, which could lead to a P supply crisis in the future. Supplementing phytase is becoming increasingly common as a method to improve the availability of P in plant ingredients containing high levels of phytate P. Fourty-eight pigs (Swedish Landrace boars × Dutch landrace sows) weaned at day 35 with an initial BW of 8.72±0.28 kg were used for a 40-day weaner performance study. The study was structured as a complete randomized design to evaluate the response of weaner pigs to four concentrations of microbial phytase produced by Aspergillus niger: (T1) basal diet; (T2) basal diet + 1000 FTU/kg; (T3) diet with decreased dicalcium phosphate + 1000 FTU/kg; and (T4) diet with no dicalcium phosphate + 1000 FTU/kg. Control group of piglets (T1) has achieved standard body mass while addition of phytase in meal increased body mass by 6.59% in T2 and 7.52% in T3. Phytase supplementation prevented decreased body weight gain diets where available phosphorous level was reduced by 50. The amount of consumed feed per day was not significantly different. Feed efficiency of T2 and T3 groups was by 3.23% better and of T4 for 11.29% lower compared to the control group of piglets (T1). Lower production results achieved by the use of low phosphorous diets can be avoided to a certain level by the use of microbial phytase. The use of phytase in pig diet significantly improved phosphorous availability, as well as of other mineral substances from the phytate complex. [Projekat Ministarstva nauke Republike Srbije, br. III46002

Novel transgenic pigs with enhanced growth and reduced environmental impact

“…Blood serum measurements also demonstrated enhanced serum P, glucose, and xylose levels in TG pigs, which signified enhanced digestive utilization of these nutrients. A significant decrease in serum alkaline phosphatase levels is an indicator of well-developed bone ( Meidinger et al, 2013 ; Sefer et al, 2012 ; Selle and Ravindran, 2008 ). These results are clear manifestations of the improved nutrient digestibility and growth performance of TG pigs.…”

A systematic-review on the role of exogenous enzymes on the productive performance at weaning, growing and finishing in pigs

“…The most used Phytases in animal feed are histidine acid phosphatases (HAPs), followed by other classes of Phytase such as Phytase of helix β (BPPhy or alkaline Phytase), purple acid Phytase and protein tyrosine phosphatase ( Lei, Weaver, Mullaney, Ullah & Azain, 2012 ). Improved availability of phosphorus and other minerals in pig's diets with the use of Phytase, reduces soil contamination ( Sefer et al., 2012 ). Phytase in pig diets is generally added at 2.5 g/kg, but less than 50% of the Phytate in the diet is hydrolyzed ( Dersjant-Li, Schuh, Weallean, Awati & Dusel, 2017 ; Selle, Cowieson & Ravindran, 2009 ).…”

“In Silico” Characterization of 3-Phytase A and 3-Phytase B fromAspergillus niger

“…During this reaction, IgE activates the segregation of signaling molecules in the bloodstream, which simultaneously causes the common symptoms of food allergies such as skin rashes, inflammation, abdominal pain and inflammation, vomiting, and diarrhea [ 40 ]. However, in several investigations performed [ 41 – 43 ] in animals, no reports were found on allergic reactions provoked by phytases to the animals involved in the trials.…”