摘要
本试验旨在研究在妊娠后期和哺乳期母猪饲粮中添加甘氨酸螯合铁(Fe-Gly)对母猪及其仔猪生产性能、铁营养状况以及免疫和抗氧化能力的影响。选用体况和背膘相近的妊娠第85天“长×大”二元经产(2~4胎)母猪40头,随机分为2组,每组20个重复,每个重复1头猪。对照组饲喂玉米-豆粕型基础饲粮,Fe-Gly组饲喂基础饲粮+3 g/kg Fe-Gly(铁含量为15~20 g/kg)。试验期51 d,从母猪妊娠第85天开始到仔猪21日龄断奶后结束。结果表明:1)与对照组相比,Fe-Gly组窝产健仔数(P=0.07)和断奶活仔数(P=0.06)有提高趋势。2)与对照组相比,Fe-Gly组初生仔猪血液血红蛋白(HGB)含量显著提高(P<0.05),初生仔猪血液红细胞计数(P=0.09)和断奶仔猪血液HGB含量(P=0.08)有提高趋势。3)与对照组相比,Fe-Gly组分娩母猪血清铁含量(P=0.08)、初生仔猪血清铁和铁蛋白含量(P=0.09)以及母猪乳汁铁含量(P=0.08)有提高趋势,断奶仔猪血清铁含量以及分娩母猪血清铁蛋白含量显著提高(P≤0.05)。4)与对照组相比,Fe-Gly组哺乳母猪血清免疫球蛋白A(IgA)含量和初生仔猪血清免疫球蛋白G(IgG)含量显著提高(P≤0.05)。5)与对照组相比,Fe-Gly组分娩母猪和断奶仔猪血清谷胱甘肽过氧化物酶(GSH-Px)活性显著提高(P<0.05),哺乳母猪血清铜锌超氧化物歧化酶(Cu/Zn-SOD)活性显著提高(P<0.05)。综上所述,在妊娠后期和哺乳期母猪饲粮中添加Fe-Gly可以提高母猪和仔猪生产性能,并提高其铁营养状况及免疫和抗氧化能力。
This study was conducted to investigate the effects of dietary supplementation of iron glycine chelate(Fe-Gly)in late gestation and lactation on performance,iron nutritional status,immune and antioxidant capacity of sows and piglets.Forty Landrace×Yorkshire sows of proven(2 to 4 litters)with similar body condition and backfat on day 85 of gestation were selected and randomly divided into 2 groups with 20 replicates per group and 1 sow per replicate.Sows in the control group were fed a corn-soybean meal type basal diet,and those in Fe-Gly group were fed the basal diet+3 g/kg Fe-Gly(iron content was 15 to 20 g/kg).The experiment lasted for 51 days,starting from the day 85 of gestation of sows and ending after weaning of piglets at 21 days of age.The results showed as follows:1)compared with the control group,the number of healthy litter born(P=0.07)and number of weaning live litter(P=0.06)in Fe-Gly group had an increasing trend.2)Compared with the control group,the blood hemoglobin(HGB)content of newborn piglets in Fe-Gly group was significantly increased(P<0.05),the blood red blood cell counts of newborn piglets(P=0.09)and blood HGB content of weaning piglets(P=0.08)had an increasing trend.3)Compared with the control group,the serum iron content of parturition sows(P=0.08),the serum contents of iron and ferritin of newborn piglets(P=0.09),and the milk iron content of sows in Fe-Gly group had an increasing trend,and the serum iron content of weaned piglets and the serum ferritin content of parturition sows were significantly increased(P≤0.05).4)Compared with the control group,the serum immunoglobulin A(IgA)content of lactating sows and serum immunoglobulin G(IgG)content of newborn piglets in Fe-Gly group were significantly increased(P≤0.05).5)Compared with the control group,the serum glutathione peroxidase(GSH-Px)activity of parturition sows and weaning piglets in Fe-Gly group was significantly increased(P<0.05),and the serum copper and zinc superoxide dismutase(Cu/Zn-SOD)activity of lactating sows was significantly increased(P<0.05).In conclusion,dietary supplementation of Fe-Gly in late gestation and lactation can improve the performance of sows and piglets,and improve their iron nutritional status,immune and antioxidant capacity.
作者
杨元森
肖诺
魏羽
林育圣
徐子平
赖长华
王璐
YANG Yuansen;XIAO Nuo;WEI Yu;LIN Yusheng;XU Ziping;LAI Changhua;WANG Lu(State Key Laboratory of Animal Nutrition,College of Animal Science and Technology,China Agricultural University,Beijing 100193,China;Shanghai Bestar Biochemical Co.,Ltd.,Shanghai 201808,China)
出处
《动物营养学报》
北大核心
2025年第4期2287-2295,共9页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
国家自然科学基金青年项目(32302793)
十四五国家重点研发计划项目(2023YFD1301605)。
关键词
甘氨酸螯合铁
母猪
仔猪
生产性能
铁营养
免疫
抗氧化
iron glycine chelate
sows
piglets
performance
iron nutrition
immune
antioxidant
