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The Effect of Maternal Gestational Activity Limitation on Maternal and Offspring Behavioral and Metabolic Indexes

Author: WangGuoFu
Tutor: YangXiaoJing
School: Nanjing Agricultural College
Course: Basic Veterinary
Keywords: gestation offspring biochemical indexes hormones behavior
CLC: S852.2
Type: Master's thesis
Year: 2013
Downloads: 3
Quote: 0
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This present study investigated the maternal behavior and offspring growth after maternal activity limitation during gestation. The experiments included two parts, the first part detected the maternal behavior and their offspring physiological condition changes with different housing system during gestation, and comprehensibly compare the performance of sows and their offspring piglets in stall and group housing systems. The second part investigated the effect of gestational restraint stress on the offspring behavior and the antioxidant capacity.1Comparison of maternal behavior and offspring physiological condition changes with different housing system during gestation in pigsIn our study,20second parity sows were randomly divided into two groups including stall with12sows and group-housing with8sows divided into2pens. We collected the saliva during gestation and sampled the saliva, colostrum, cord blood and the plasma of weaning piglets. The performance and behavior of sows during pregnancy were recorded. Plasma biochemical parameters, colostrum and plasma hormones and saliva cortisol were detected to analyze maternal and offspring physiological condition changes with the different housing system. The number of birth, newborn weight and weaning weight were analyzed to evaluate the performance of the sows with the two different housing system. The welfare of pregnant sows with different housing system were evaluated through maternal behavior and plasma hormones levels. The results showed that glucose, total cholesterol, high density lipoprotein cholesterol, low-density lipoprotein cholesterol, albumin, globulin, total protein, lactate dehydrogenase levels in the cord blood of group housing system were significantly higher than that in the stall. T4levels of colostrum in group housing system was significantly higher than the stall housing system. Plasma triglycerides, total cholesterol, high density lipoprotein, albumin and T4concentrations in the plasma of the male weaned piglets from group housing system were significantly higher than those in stall housing system. Thus, the group housing system had certain effect on offspring piglets’performance and the male piglets were more susceptible.Behavior analysis showed that lying behavior and social behavior existed significantly pregnancy stages and housing system (P<0.05) difference, overall ingestion, sham chewing behavior and the behavior of the mouth demonstrated significantly different between group housing system and stall housing system (P<0.05). Group housing system can significantly reduce the stereotypy behavior of pregnant sows and increase social behavior.2The effect of maternal restraint stress during pregnancy on the offspring behavior and antioxidant capacityThis study aimed to explore the maternal restraint stress during pregnancy on offspring behavior and antioxidant capacity. The virgin rats were divided into two groups including restrain group and control group (n=7). On8to19day during pregnancy, female rats were restrained for6hours from10:00am to4:00pm. The number of giving births, birth weight and weaning weight were recorded. Before weaning, the rat tail suspension test was carried out to analysis behavior difference. Plasma, soleus, gastrocnemius, hippocampus of offspring were collected before weaning. Corticosterone and biochemical indexes in plasma were detected to analyse the effect of restrain stress on offspring metabolic. The antioxidant indicators of the soleus and gastrocnemius muscle were measured to analyze the effect of pregnancy maternal restraint stress on offspring antioxidant capacity. GR, MR, CRHI, CRHII, NR2A, NR2BmRNA expressions in hippocampal were detected by RT-PCR. The results showed that the giving births, birth weight and weaning weight has no significantly difference during the pregnancy restraint stress, and the plasma physiological indexes in both mother and offspring rats have no obviously changes. The tail suspension test showed that restraint stress during pregnancy significantly increased the number of immobility of male rat duration compared to control. However, GR, MR, CRHI, CRHII, NR2A, and NR2BmRNA expression in hippocampal of offspring rats had no significantly difference. Antioxidant index levels in the male soleus muscle during maternal restraint stress significantly reduce. These results suggested that the maternal restraint stress during gestation can influence the offspring behavior and antioxidant capacity, and this effect happened mainly on the male offspring.rats.

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CLC: > Agricultural Sciences > Livestock, animal medicine,hunting,silkworm,bee > Animal Medicine ( Veterinary Medicine) > Basic Veterinary Science > Animal physiology, biophysics,biochemistry
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