Effects of Phytase Supplementation to Diets with or without Zinc Addition on Growth Performance and Zinc Utilization of White Pekin Ducks

Abstract

The effect of phytase and inorganic Zn supplementation was studied in 180 male White Pekin ducks (WPD) from 1 to 56 days of age. The birds were divided into four groups fed the same basal diet (containing 26 ppm of Zn from raw materials): the control group did not receive Zn supplementation; the second group was supplemented with 30 ppm of Zn oxide; and the third and fourth groups were fed the control and the 30 ppm diets, respectively, both supplemented with 500 U of E. coli phytase. Each group contained five replicates of nine ducks. The body weight and feed intake were recorded at 1, 28 and 56 days of age. At 56 days of age, five birds/group were used to measure feed digestibility and five other birds/group were slaughtered. Zn at 30 ppm increased the body weight gain (BWG, p < 0.01) and feed intake (p < 0.05) and improved the feed conversion (FCR, p < 0.05) of the growing ducks. The Zn retention and Zn level in the excreta increased (p < 0.01) due to Zn supplementation. The addition of phytase improved BWG (p < 0.01) and FCR (p < 0.05) of growing ducks. The use of phytase reduced (p < 0.01) the level of Zn in duck excreta. Phytase supplementation to the basal diet at 30 ppm seems to be adequate to meet Zn requirements for ducks without further Zn additions.

Effects of Saccharomyces cerevisiae and phytase co-fermentation of wheat bran on growth, antioxidation, immunity and intestinal morphology in broilers

“…Nevertheless, Santos et al [29] indicated that the addition of phytase (500 FTU/kg) in broilers' diet can increase body weight gain in the starter stage, but does not affect the finisher stage. This may be due to gut maturation and less inorganic phosphorous requirements during the finisher period as well as stability of gut microbiota [2][3][4][5]. The result mentioned above confirmed that phytase is one of the necessary elements of FWB in the broilers' growth at the starter stage.…”

“…Nevertheless, as the outbreak of COVID-19 worldwide, the lack of labors affects the produces of corn and soybean and causes feed deficiency. Therefore, it is important to find alternative sources of carbohydrates while safeguarding the health of animals [1][2][3][4][5]. Because fiber is considered to be an anti-nutritional factor, low-fiber diets were typically used when feeding non-ruminant livestock animals in the past [6].…”

“…Cowiesonet al [10] and Hamdi et al [11] indicated that the addition of phytase to feeds can increase the digestion of phosphorus, minerals, and amino acids of broilers and increase broilers' bone strength. In addition, the research group of Attia et al and Al-Harthi et al reported that phytase could improve performance of broiler chickens regardless of phosphorus contents in broiler diet [1][2][3][4][5].…”

Effect of Different Levels of Multienzymes on Immune Response, Blood Hematology and Biochemistry, Antioxidants Status and Organs Histology of Broiler Chicks Fed Standard and Low-Density Diets

“…The cost of poultry feed ingredients represent about 60-70% of the total production cost, and hence, feed formulation is a critical approach in poultry industry. Feed utilization can be met with inclusion of enzymes, antimicrobials, probiotics, or prebiotic or natural products (1)(2)(3)(4)(5)(6)(7)(8)(9).…”

The Effect of Supplementing Different Levels of Phytase Enzyme on Performance, Some Carcass Properties and Economics of Broiler Chickens

“…Adding phytase to young turkey had beneficial effects on their growth performance and tibia mineralization but had no effects on the carcass traits (Ciurescu et al 2020). Phytase added to growing ducks significantly improved body weight gain and feed conversion ratio (Attia et al 2019). Super dosing of phytase (1500FTU/kg of feed) increased the best utilization of nutrients resulted in improving performance and improved profitability compared to non-supplemented group (Raut et al 2018).…”