动物营养学报2017，Vol.29Issue(6)：2204-2210,7.DOI:10.3969/j.issn.1006-267x.2017.06.044
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
Effects of Dietary Iron Supplemental Level on Growth Performance, Slaughter Performance and Blood Indexes of 60 to 90-Day-Old New Zealand Meat Rabbits
摘要
Abstract
This experiment was conducted to investigate the effects of dietary iron supplemental level on growth performance, slaughter performance and blood indexes of 60 to 90-day-old New Zealand meat rabbits.One hundred and four 53-day-old New Zealand meat rabbits with similar body weight were randomly divided into four groups with twenty six replicates per group and each replicate contained one rabbit.The rabbits in control group were fed a basic diet, and those in experimental groups were fed experimental diets with 50, 100 and 200 mg/kg iron (the supplemental form was FeSO4·7H2O, and purity was 98%), respectively.The trial lasted for 7 days for adaption, and 30 days for test.The results showed as follows: 1) dietary iron supplemental level had significant effect on the average daily gain (ADG) and the feed to gain ratio (F/G) (P<0.05), but had no significant effect on the average daily feed intake (ADFI) of 60 to 90-day-old New Zealand meat rabbits (P>0.05).With the dietary iron supplemental level increased, the ADG was firstly increased and then decreased, the F/G was firstly decreased and then increased;the highest ADG and the lowest F/G when dietary iron supplemental level was 100 mg/kg.2) Dietary iron supplemental level had significant effect on half eviscerated ratio and all eviscerated ratio of 60 to 90-day-old New Zealand meat rabbit (P<0.05), with the dietary iron supplemental level increased, the half eviscerated ratio and all eviscerated ratio was firstly increased and then decreased, and got the highest when dietary iron supplemental level was 50 mg/kg.3) Dietary iron supplemental level had no significant effect on liver ratio (P>0.05), but had significant effect on spleen ratio and kidney ratio of 60 to 90-day-old New Zealand meat rabbits (P<0.05).When dietary iron supplemental level was 50, 100 and 200 mg/kg, the kidney ratio was significantly higher than that in control group (P<0.05);when dietary iron supplemental level was 100 and 200 mg/kg, the spleen ratio was significantly higher than that in control group (P<0.05).4) Dietary iron supplemental level had no significant effect on the contents of iron, copper, calcium, zinc and magnesium in blood of 60 to 90-day-old New Zealand meat rabbit (P>0.05).Dietary iron supplemental level had significant effect on platelet distribution width (PDW), mean platelet volume (MPV) and platelet-large cell rate (P-LCR) (P<0.05).Considering all indexes of this experiment, the appropriate dietary iron supplemental level is 50 to 100 mg/kg for 60 to 90-day-old Zealand meat rabbit.关键词
铁/新西兰兔/生长性能/屠宰性能/血液指标Key words
iron/New Zealand rabbit/growth performance/slaughter performance/blood indexes分类
农业科技引用本文复制引用
刘公言,张伟,厉磊,高琴,孙瑛超,李福昌..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[J].动物营养学报,2017,29(6):2204-2210,7.基金项目
现代农业产业技术体系建设专项(CARS-44-B-1) （CARS-44-B-1）
国家公益性行业(农业)科研专项(2000903006) （农业）
