植物提取物对徐淮白山羊生长性能、血清生化指标及免疫功能的影响

Effects of plant extracts on growth performance,serum biochemical indexes,and immune function of Xuhuai white goat

试验旨在探究不同水平的植物提取物对徐淮白山羊生长性能、血清生化指标及机体免疫功能的影响,确定植物提取物在徐淮白山羊养殖生产中的适宜添加水平。试验选择48只健康的徐淮白山羊,按照单因素试验设计,随机分为4组,每组3个重复,每个重复4只羊。对照组饲喂基础饲粮,试验组饲喂含有0.1%、0.2%和0.4%的植物提取物的饲粮。预试期1 w,正式试验期为8 w。试验结束后,测定各组徐淮白山羊的生长性能、生化指标及免疫指标。结果表明:与对照组相比,0.2%和0.4%植物提取物组的末重和平均日增重显著增加(P<0.05),料重比显著降低(P<0.05),腹泻率分别显著降低了33.88%和41.82%(P<0.05)。与对照组相比,0.2%和0.4%植物提取物组徐淮白山羊血清尿素氮、胆固醇含量显著降低(P<0.05),白蛋白、总蛋白、高密度脂蛋白、生长激素含量显著升高(P<0.05);所有试验组徐淮白山羊血清谷草转氨酶活性均显著降低(P<0.05)。与对照组比,0.2%植物提取物组徐淮白山羊血清白细胞介素-4含量显著增加(P<0.05),白细胞介素-22含量显著降低(P<0.05);所有试验组徐淮白山羊血清白细胞介素-6、肿瘤坏死因子-α含量显著降低(P<0.05);0.2%和0.4%植物提取物组徐淮白山羊血清白细胞介素-10、转化生长因子-β含量均显著升高(P<0.05)。研究表明,饲喂适量的植物提取物可改善徐淮白山羊生长性能、免疫功能及机体健康状态,且以0.2%的添加水平效果较好。

The aim of this experiment was to investigate the effects of different levels of plant extracts on the growth performance,serum biochemical indexes,and immune function of Xuhuai white goat,and to determine the suitable supplemental level of plant extracts in Xuhuai white goat breeding.A total of 48 healthy Xuhuai white goats were selected and divided into four treatment groups with three replicates per group and four Xuhuai white goats per replicate according to the single-factor experimental design.The control group was fed a basic diet,while the experimental groups were fed diets containing 0.1%,0.2%,and 0.4% plant extracts.The preliminary trial lasted for one week,and the formal experiment was conducted for eight weeks.After the experiment,the growth performance,biochemical indexes,and immune indexes of the Xuhuai white goats in each group were measured.The results showed that compared with the control group,the final weight and average daily gain of 0.2% and 0.4% plant extract groups were significantly increased(P<0.05),the ratio of feed to gain was significantly decreased(P<0.05).The diarrhea rate was significantly decreased by 33.88% and 41.82%(P<0.05).Compared with control group,the contentrations of serum urea nitrogen and cholesterol of Xuhuai white goats in 0.2% and 0.4% plant extract groups were significantly decreased(P<0.05),while the contentrations of albumin,total protein,high density lipoprotein and growth hormone were significantly increased(P<0.05).The glutamic oxalacetic transaminase activity of Xuhuai white goats in all experimental groups was significantly decreased(P<0.05).Compared with the control group,the serum interleukin-4 concentrations of Xuhuai white goats in 0.2% plant extract group were significantly increased(P<0.05),and the serum interleukin-22 concentrations were significantly decreased(P<0.05),serum interleukin-6 and tumor necrosis factor-αconcentrations of Xuhuai white goats in all experimental groups were significantly decreased(P<0.05).The contentrations of serum interleukin-10 and transforming growth factor-βof Xuhuai white goats in 0.2% and 0.4% plant extract groups were significantly increased(P<0.05).The results indicate that feeding an appropriate amount of plant extracts can improve the growth performance,immune function,and health status of Xuhuai white goats,with the better effect at the 0.2% addition level.