饲粮铁添加水平对60～90日龄新西兰肉兔生长性能、屠宰性能及血液指标的影响

发布时间：2018-10-12 19:52

【摘要】：本试验旨在研究饲粮铁添加水平对60~90日龄新西兰肉兔生长性能、屠宰性能及血液指标的影响。试验选取104只53日龄体重相近新西兰肉兔,随机分成4个组,每组26个重复,每个重复1只兔。对照组饲喂基础饲粮,试验组分别在基础饲粮中添加50、100、200 mg/kg铁,铁添加形式为七水硫酸亚铁(FeSO4·7H2O),纯度为98%。预试期7 d,正试期30 d。结果表明:1)饲粮铁添加水平对60~90日龄新西兰肉兔平均日增重(ADG)和料重比(F/G)有影响显著(P0.05),对平均日采食量(ADFI)无显著影响(P0.05)。随着饲粮铁添加水平的增加,ADG先增加后降低,F/G先降低后增加;当饲粮铁添加水平为100 mg/kg时,ADG最高,F/G最低。2)饲粮铁添加水平对60~90日龄新西兰肉兔全净膛屠宰率和半净膛屠宰率有显著影响(P0.05),随着饲粮铁添加水平的增加,全净膛屠宰率和半净膛屠宰率先增加后降低,当饲粮铁添加水平为50 mg/kg时最高。3)饲粮铁添加水平对60~90日龄新西兰肉兔肝脏指数无显著影响(P0.05),对肾脏指数和脾脏指数有显著影响(P0.05)。饲粮铁添加水平为50、100、200 mg/kg时,肾脏指数显著高于对照组(P0.05);饲粮铁添加水平为100、200 mg/kg时,脾脏指数显著高于对照组(P0.05)。4)饲粮铁添加水平对60~90日龄新西兰肉兔血液中铁、铜、钙、锌、镁含量无显著影响(P0.05);饲粮铁添加水平对血小板分布宽度(PDW)、平均血小板体积(MPV)、血小板大细胞比率(P-LCR)有显著影响(P0.05)。综合本试验测定指标,60~90日龄新西兰肉兔饲粮中适宜的铁添加水平为50~100 mg/kg。
[Abstract]:The purpose of this study was to study the effects of dietary iron supplementation on growth performance, slaughtering performance and blood index of 60 ~ 90 day old New Zealand meat rabbits. 104 New Zealand meat rabbits of similar body weight at 53 days old were randomly divided into 4 groups with 26 replicates in each group and 1 rabbit per repeat. The control group was fed with basic diet and the experimental group was fed with 50100200 mg/kg iron in the basal diet. The iron was added in the form of ferrous sulphate heptahydrate (FeSO4 7H2O) and the purity was 98%. The pretest period was 7 days and the current test period was 30 days. The results showed that: 1) the dietary iron supplementation level had significant effect on the average daily gain (ADG) and feed weight ratio (F / G) of 60 ~ 90 days old New Zealand meat rabbits (P0.05), but had no significant effect on the average daily feed intake (ADFI) (P0.05). With the increase of dietary iron level, ADG increased first and then decreased, and F- / G decreased first and then increased. When dietary iron supplementation level was 100 mg/kg, ADG was the highest, F / G was the lowest. 2) dietary iron supplementation level had significant effects on the slaughter rate of 60 ~ 90 days old New Zealand meat rabbits (P0.05), and with the increase of dietary iron supplementation level, there was a significant effect on the slaughter rate of 60 ~ 90 days old New Zealand meat rabbits (P0.05). The percentage of full-bore slaughtering and semi-clean slaughtering increased first and then decreased, and reached the highest when dietary iron level was 50 mg/kg. 3) dietary iron supplementation level had no significant effect on liver index of 60-90 day old New Zealand meat rabbits (P0.05), but had significant effect on kidney index and spleen index (P0.05). When the dietary iron supplementation level was 50100200 mg/kg, the renal index was significantly higher than that of the control group (P0.05), and the spleen index was significantly higher than that of the control group (P0.05) when the dietary iron supplementation level was 100200 mg/kg. The effect of dietary iron supplementation level on blood iron, copper, calcium, zinc in the blood of 600-90 day old New Zealand meat rabbits was significantly higher than that of the control group (P0.05). There was no significant effect on magnesium content (P0.05), and dietary iron supplementation had a significant effect on platelet distribution width (PDW),) mean platelet volume (MPV), platelet large cell ratio (P-LCR) (P0.05). The optimum iron supplementation level in the diet of New Zealand meat rabbits aged 60 ~ 90 days was 50 ~ 100 mg/kg..
【作者单位】：山东农业大学动物科技学院;济宁职业技术学院;临沂市畜牧兽医检测中心;
【基金】：现代农业产业技术体系建设专项(CARS-44-B-1) 国家公益性行业(农业)科研专项(2000903006)
【分类号】：S829.1

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