饲粮铁浓度对腹水诱导条件下肉鸡生长性能、腹水发生率、血液生化指标及抗氧化状态的影响

IF 2.5 2区农林科学 Q1 AGRICULTURE, DAIRY & ANIMAL SCIENCE

Animal Feed Science and Technology Pub Date : 2025-01-01 DOI:10.1016/j.anifeedsci.2024.116185

Nasim Akbari , Mohammad Hossein Shahir , Barbara Tzschentke , Iraj Jafari Anarkooli

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引用次数: 0

摘要

本研究旨在探讨饲粮铁（Fe）浓度对肉鸡腹水发病率的影响。选取450只雄性肉仔鸡，随机分为3个饲粮处理，每组10个重复，每组15只鸡。饲粮铁添加水平分别为20（对照）、50和80 mg Fe/kg。在诱导腹水条件下，饲喂14日龄肉鸡试验饲粮。试验期间（14 ~ 39 d），每2周测量采食量（FI）和体增重（BWG），每天记录腹水死亡率。饲粮中添加铁可提高体增重（P <； 0.05），但对FI和饲料系数（FCR）无显著影响。腹水死亡率随铁添加量的增加而增加（P <； 0.05）。尸体(P & lt; 0.10),乳房(P & lt; 0.05)和肝脏(P & lt; 0.05)与铁补充百分比增加,然而,铁补充减少大腿(P & lt; 0.10)和腹部脂肪百分比(P & lt; 0.10)。饲粮铁浓度显著影响血清总铁（P <； 0.05）、葡萄糖（P <； 0.05）、白蛋白（P <； 0.05）和尿酸（P <； 0.05）。虽然补铁对甲状腺素（T4）和促甲状腺素（TSH）没有显著影响，但提高了血浆三碘甲状腺原氨酸（T3）和T3/T4比值（P <； 0.05）。随着饲粮铁浓度的升高，血清丙二醛（MDA）和肝脏铁浓度呈线性升高（P <； 0.05）。铁的补充增加了红细胞（RBC）计数（P <； 0.05），但红细胞压积（HCT）和血红蛋白（Hb）不受饮食处理的影响。由此可见，饲粮铁添加水平较高（50和80 mg Fe/kg）与肉鸡氧化应激和腹水易感性相关。因此，在腹水诱导条件下，肉仔鸡的适宜补铁水平为20 mg Fe/kg。

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Effects of dietary iron concentrations on growth performance, ascites incidence, blood biochemical parameters, and antioxidant status of broiler chickens in ascites inducing condition

The aim of this study was to investigate the impact of dietary iron (Fe) concentrations on ascites incidence in broiler chickens. Four hundred and fifty male broilers were randomly assigned to three dietary treatments each with 10 replicates of 15 birds. The treatments were dietary iron supplementation levels of 20 (control), 50, and 80 mg Fe/kg. The experimental diets were fed to the broilers after 14 d of age under ascites inducing condition. Feed intake (FI) and body weight gain (BWG) were measured biweekly and ascites mortality was recorded daily during the experiment (14–39 d). Dietary iron addition increased BWG (P < 0.05), however, FI and feed conversion ratio (FCR) were not significantly affected. Ascites mortality increased by increasing Fe supplementation (P < 0.05). Carcass (P < 0.10), breast (P < 0.05), and liver (P < 0.05) percentages increased with Fe supplementation, however, Fe supplementation decreased thigh (P < 0.10) and abdominal fat (P < 0.10) percentages. Serum total iron (P < 0.05), glucose (P < 0.05), albumin (P < 0.05), and uric acid (P < 0.05) were significantly affected by dietary Fe concentrations. Although iron supplementation had not signiﬁcant effect on thyroxine (T₄) and thyrotropin (TSH), it increased plasma triiodothyronine (T₃) and T₃/T₄ ratio (P < 0.05). Serum malondialdehyde (MDA) and liver iron concentrations increased linearly (P < 0.05) by increasing dietary Fe concentrations. Iron supplementation increased red blood cell (RBC) count (P < 0.05), however, hematocrit (HCT) and hemoglobin (Hb) were not affected by the dietary treatments. In conclusion, the results indicate that higher levels of dietary iron supplementation (50 and 80 mg Fe/kg) is associated with oxidative stress and ascites susceptibility in broiler chickens. Therefore, iron supplementation level of 20 mg Fe/kg is optimum for broiler chickens in ascites inducing condition.

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来源期刊

Animal Feed Science and Technology 农林科学-奶制品与动物科学

CiteScore

6.00

自引率

6.20%

发文量

266

审稿时长

3 months

期刊介绍： Animal Feed Science and Technology is a unique journal publishing scientific papers of international interest focusing on animal feeds and their feeding. Papers describing research on feed for ruminants and non-ruminants, including poultry, horses, companion animals and aquatic animals, are welcome. The journal covers the following areas: Nutritive value of feeds (e.g., assessment, improvement) Methods of conserving and processing feeds that affect their nutritional value Agronomic and climatic factors influencing the nutritive value of feeds Utilization of feeds and the improvement of such Metabolic, production, reproduction and health responses, as well as potential environmental impacts, of diet inputs and feed technologies (e.g., feeds, feed additives, feed components, mycotoxins) Mathematical models relating directly to animal-feed interactions Analytical and experimental methods for feed evaluation Environmental impacts of feed technologies in animal production.