Diet supplementation with phytase on performance of broiler chickens

Abstract

-The assay was carried out to determine the effect of phytase supplementation on performance of broilers from 1 to 21 and 1 to 40 days of age. Twelve hundred and fifty male broilers (Ross) were distributed in a randomized experimental design, with five treatments, 10 repetitions and 25 birds per experimental unit. The treatments consisted of evaluating the phytase supplementation in diets with reductions in nutritional levels, compared with the positive control.The nutrient contents in negative controls one and two were reduced progressively and these diets were supplemented with phytase levels of 250 and 500 ftu/kg of the diet, respectively. Two diets were formulated: pre-starter/starter, 1-21 days, and growth/finishing, from 21 to 40 days). In both phases, with the phytase supplementation in diets that had their nutritional levels reduced (negative control one + 250 ftu and negative control two + 500 ftu), feed intake, weight gain and feed conversion of the birds were similar to the positive control. In the period from 1 to 40 days of age, with the diets supplemented with phytase, the productive efficiency index of the birds was similar to that of the positive control group.Supplementation with 250 ftu/kg and 500 ftu/kg phytase in diets with reduced nutritional levels improved broiler performance, resulting in parameters similar to those shown by broilers fed with the diet with normal levels of nutrients.

Effects of phytase supplementation on growth performance, slaughter performance, growth of internal organs and small intestine, and serum biochemical parameters of broilers

“…Rutherfurd et al [11], using a low-phosphorus corn-soybean meal diet, reported that the inclusion of a novel microbial phytase into diet greatly increased ileal phytase P and total P absorption and ileal threonine, tyrosine, and histidine. Lelis et al [12] reported that the diets containing phytase could release protein, energy, amino acid and digestive enzymes which were chelated with phytic acid. These reasons might improve the growth performance of broilers.…”

Bioprocess for efficient production of recombinant Pichia anomala phytase and its applicability in dephytinizing chick feed and whole wheat flat Indian breads

“…As the addition of rPPHY liberated phytic acidbound phosphorous from various broiler feeds, this can be used as a promising feed additive. The addition of phytase to the feeds of monogastric animals not only reduces the production cost of poultry but also helps in environmental protection by reducing the release of phytic acid into water bodies [15,17,36].…”

Effect of supplementation with Escherichia coli phytase for broilers on performance, nutrient digestibility, minerals in the tibia and diet cost

“…Reductions in ME are usually compensated by an increased in feed intake (LEESON et al, 1996;HAHN-DIDDE;PURDUM, 2014). However, the reduction of P acts in the opposite way, reducing the feed intake of broilers (VIVEIROS et al, 2002;LELIS et al, 2012;ROUSSEAU et al, 2012;LEE et al, 2017). When broilers are fed P-deficient diets, their serum concentrations of triiodothyronine (T3), tetraiodothyronine (T4) and growth hormone (GH) decrease (PARMER et al, 1987).…”