Department of Veterinary, Shoushtar Branch, Islamic Azad University, Shoushtar, Iran.
Department of Veterinary, Behbahan Branch, Islamic Azad University, Behbahan, Iran.
Vet Med Sci. 2023 Mar;9(2):860-866. doi: 10.1002/vms3.1075. Epub 2023 Jan 20.
Probiotics and phytase are commonly used as dietary supplements in poultry diets. Phytase is involved in the release of phosphorus in plant grain ingredient of poultry feed, while probiotics provide beneficial organisms to the gastrointestinal tract.
The present study was performed to evaluate the effect of both commercial probiotic and phytase on chicken performance and biochemical indices.
A total of 300 chicks were divided into 4 groups that fed the basal diet, diet containing probiotic (Protexin®), Phytase (Meriphyze 5000®), and probiotic plus phytase all over the growing period. The growth indices were measured weekly, analysed at the 21 and 42 days of age. At 42 days of age, blood samples were collected from all chickens. The concentration of liver enzymes, lipid profiles and antioxidant status were measured in blood samples.
The results showed that the weight gain and feed intake were significantly higher in chickens received phytase alone or phytase in combination with probiotic. The feed conversion ratio (FCR) significantly lower in all supplemented chickens in comparison with control chickens (p < 0.05). Although the addition of probiotic or phytase to chicken diet showed an extent variation in biochemical and antioxidant indices, the addition of phytase plus probiotic showed a significantly increase of blood total protein (TP), albumin (Alb), glutathione peroxidase (GPx), super oxide dismutase (SOD), catalysis (CAT) and total antioxidant capacity (TAC) level, while decrease triglyceride (TG), cholesterol (CHL), aspartate transferase (AST), alanine aminotransferase (ALT) and alkaline phosphatase (ALP) and malondialdehyde (MDA) in comparison to control chickens. The supplementation of chicken diet with probiotic, phytase or probiotic plus phytase did not effect on low-density lipoprotein (LDL) and high-density lipoprotein (HDL).
The simultaneous supplementation of probiotics and phytases seems to have a positive effect on growth indices in broilers, but they can cause changes in the serum biochemical profile, which sometimes lead to interference and do not always act synergistically.
益生菌和植酸酶通常作为家禽饲料中的膳食补充剂。植酸酶参与家禽饲料中植物谷物成分中磷的释放，而益生菌为胃肠道提供有益的生物体。
本研究旨在评估商业益生菌和植酸酶对鸡生产性能和生化指标的影响。
将 300 只小鸡分为 4 组，分别饲喂基础日粮、含益生菌（Protexin®）的日粮、植酸酶（Meriphyze 5000®）和整个生长期的益生菌加植酸酶。每周测量生长指标，在第 21 天和第 42 天进行分析。在第 42 天，从所有鸡中采集血液样本。测量血液样本中肝酶、脂质谱和抗氧化状态的浓度。
结果表明，单独添加植酸酶或益生菌与植酸酶联合添加的鸡的体重增加和采食量显著更高。与对照组相比，所有添加组的饲料转化率（FCR）显著降低（p<0.05）。尽管向鸡饲料中添加益生菌或植酸酶会在生化和抗氧化指标上产生一定的变化，但添加植酸酶加益生菌会显著增加血液总蛋白（TP）、白蛋白（Alb）、谷胱甘肽过氧化物酶（GPx）、超氧化物歧化酶（SOD）、催化（CAT）和总抗氧化能力（TAC）水平，同时降低甘油三酯（TG）、胆固醇（CHL）、天冬氨酸转移酶（AST）、丙氨酸氨基转移酶（ALT）和碱性磷酸酶（ALP）和丙二醛（MDA）与对照组相比。鸡饲料中添加益生菌、植酸酶或益生菌加植酸酶对低密度脂蛋白（LDL）和高密度脂蛋白（HDL）没有影响。
同时补充益生菌和植酸酶似乎对肉鸡生长指标有积极影响，但它们会导致血清生化谱发生变化，有时会导致干扰，并不总是协同作用。
