断奶日龄对五指山仔猪生长性能和血清生化指标的影响

发布时间：2018-06-29 09:55

本文选题：断奶日龄 + 五指山仔猪　；参考：《动物营养学报》2017年06期

【摘要】：本试验旨在研究断奶日龄对五指山仔猪生长性能和血清生化指标的影响。选取日龄相近(±1 d)、体重[(0.56±0.07)kg]相近的五指山仔猪96头,随机分成4组,每组设4个重复,每个重复6头猪。4组仔猪分别在21、28、35和42日龄断奶。试验从8日龄开始,至56日龄结束,试验期间定期测定体重、采食量和血清生化指标。结果表明:各组仔猪断奶后平均日增重(ADG)出现不同程度的下降,且断奶日龄越早,ADG下降幅度越大;35日龄断奶组和42日龄断奶组21~28日龄、28~35日龄、35~42日龄、49~56日龄阶段的ADG显著高于21日龄断奶组(P0.05)。各组仔猪断奶后平均日采食量(ADFI)显著增加(P0.05),42日龄以后,各组ADFI无显著差异(P0.05)。21日龄断奶组、28日龄断奶组、35日龄断奶组血清总蛋白(TP)、白蛋白(ALB)、免疫球蛋白G(IgG)、免疫球蛋白M(IgM)含量以及谷丙转氨酶(ALT)、谷草转氨酶(AST)、乳酸脱氢酶(LDH)活性在断奶后7 d均发生显著变化(P0.05),并以21日龄断奶组波动最大;与35日龄断奶组和42日龄断奶组相比,21日龄断奶组28、35日龄时血清TP、ALB、IgG、IgM含量显著降低(P0.05),ALT、AST、LDH活性显著提高(P0.05),到56日龄时,血清TP、IgG、IgM含量仍显著低于35日龄断奶组和42日龄断奶组(P0.05)。21日龄断奶组血清甘油三酯(TG)、胆固醇(CHOL)含量在28~56日龄间存在显著变化(P0.05),35日龄断奶组和42日龄断奶组血清TG、CHOL含量在整个试验期内均无显著变化(P0.05)。35日龄断奶组血清TP、ALB、IgG、IgM含量以及ALT、AST、LDH活性除在42日龄时与42日龄断奶组存在显著差异(P0.05)外,其余时间点与42日龄断奶组均无显著差异(P0.05)。由此得出,35或42日龄断奶的五指山仔猪在生长性能、血清生化指标及免疫机能方面优于21日龄断奶的五指山仔猪。
[Abstract]:The purpose of this experiment was to study the effect of weaning age on growth performance and serum biochemical indexes of Wuzhishan piglets. 96 Wuzhishan piglets with similar body weight of 卤1 d), [(0.56 卤0.07) kg] were randomly divided into 4 groups, with 4 replicates in each group. The body weight, feed intake and serum biochemical indexes were measured regularly during the experiment from the age of 8 days to the end of the age of 56 days. The results showed that the average daily gain (ADG) of piglets decreased in different degrees after weaning. The decrease of ADG in the early weaning group was greater than that in the 21-day weaning group and the 42-day-old weaning group (P 0.05). The ADG in the age group was significantly higher than that in the 21-day-old weaning group (P 0.05). The ADG was significantly higher in the 21-day-old weaning group than in the 21-day-old weaning group (P 0.05). After weaning, the average daily intake (ADFI) of piglets in each group increased significantly (P0.05) after 42 days of age. There was no significant difference in serum total protein (TP), albumin (ALB), immunoglobulin G (IgG), immunoglobulin M (IgM), alanine aminotransferase (alt), aspartate aminotransferase (AST) and lactate dehydrogenase (LDH) in the 21-day-old weaning group. The activity changed significantly on the 7th day after weaning (P0.05), and the fluctuation was the most in 21-day-old weaning group. Compared with 35 day weaning group and 42 day old weaning group, the level of serum TPN ALB IgGN IgM in 21 day weaning group was significantly lower than that in 42 day weaning group (P0.05), and at 56 days old, the activity of alt AST LDH was significantly increased (P0.05). The levels of serum TPN IgGN IgM were still significantly lower than those of 35 day weaning group and 42 day old weaning group (P0.05) .21 days old weaning group serum triglyceride (TG), cholesterol (Chol) content in 2856-day-old group (P0.05) 35 days old weaning group and 42-day-old weaning group serum TGG Chol contain significant changes (P0.05) During the whole trial period, there was no significant change in the content of serum TPB ALBN IgGN IgM and the activity of alt ASTT LDH in the weaning group at the age of 35 days (P0.05), except that there was a significant difference between the two groups at the age of 42 days (P0.05), and between the two groups at the age of 42 days (P0.05). There was no significant difference between the rest time point and 42 day weaning group (P0.05). It was concluded that Wuzhishan piglets weaned at 35 or 42 days of age were better than those weaned at 21 days in terms of growth performance, serum biochemical indexes and immune function.
【作者单位】：中国热带农业科学院热带作物品种资源研究所;
【基金】：海南省自然科学基金项目(20153079) 中国热带农业科学院中央级公益性科研院所基本科研业务费专项(1630032016002) 国家自然科学基金项目(31301990)
【分类号】：S828.5

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