Volume 13, Issue 38 (12-2022)                   rap 2022, 13(38): 49-57 | Back to browse issues page


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Pashaei Jalal M, Soleimani2 L, Sharifi S D, Honarbakhsh S. (2022). The Effect of using a Combination of Phytase and Synbiotic in a Phosphorus Deficient Diet on the Performance and Blood Parameters of Broiler Chickens. rap. 13(38), 49-57. doi:10.52547/rap.13.38.49
URL: http://rap.sanru.ac.ir/article-1-1321-en.html
University of Tehran, Department of Animal and Poultry Sciences, College of Aburaihan,
Abstract:   (1182 Views)
Extended Abstract
Introduction and Objective: With the increasing development of broiler industry, increasing feeding costs and concerns, environmental pollution caused by nitrogen and phosphorus disposal, finding ways to increase the bioavailability of nutrients, including phosphorus, is of great interest. The purpose of this experiment was to investigate the effect of the combination of phytase and synbiotic in phosphorus deficient diets on the performance of broiler chickens.
Material and Methods: 360 one-day-old broiler chickens of Ross 308 strain were used in a completely randomized design with 5 treatments, 4 replications and 18 birds per replication. The birds were fed with the same rations in the first seven days and the experimental diets were given to them from the age of 8 days. Experimental treatments include 1- Control group (diet containing recommended levels of phosphorous), 2- Diet with phosphorus level less than recommended (75% recommended; low phosphorus diet), 3- Low phosphorus diet + phytase, 4- Low phosphorus diet + Synbiotic, 5- Low phosphorus diet + Synbiotic + phytase. Body weight and feed intake were measured in each period and daily weight gain and feed conversion ratio were calculated. At the end of the period, low density serum  cholesterol concentrations, high density poprupe (HDL) and low density poprupe L (LDL) and alanine aminotransferase (ALT) enzymes were measured.
Results: During growth period (24-7 days), the weight gain of birds that received phytase, synbiotic and synbiotic diets with phytase was higher than birds fed control or phosphorus deficient diets and these birds had higher live weight (P<0.05). There was no difference in carcass yield and relative weight of liver and ventricular fat between treatments. Experimental treatments had no effect on serum concentrations of cholesterol, HDL and LDL and alanine aminotransferase (ALT) in broilers. The level of triglyceride in the blood of birds fed phosphorus-deficient diets was lower than that of birds fed control diets containing synbiotics or synbiotics + phytase (p<0.05).
Conclusions: The use of synbiotec + phytase in phosphorus-deficient diets, while reducing the need for phosphorus mineral source, improves the growth performance of broilers and also reduces phosphorus excretion into the environment.
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Type of Study: Research | Subject: تغذیه طیور
Received: 2022/08/31 | Revised: 2023/01/8 | Accepted: 2022/10/9 | Published: 2022/12/1

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