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Replacing dietary sodium selenite with biogenic selenium nanoparticles improves the growth performance and gut health of early-weaned piglets

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Animal Nutrition 2023年第4期15卷 99-113页

作者： Lei Qiao Xina Dou Xiaofan Song Jiajing Chang Xiaonan Zeng Lixu Zhu Hongbo Yi Chunlan Xu School of Life Sciences Northwestern Polytechnical UniversityXi'anShaanxi 710072China State Key Laboratory of Livestock and Poultry Breeding Ministry of Agriculture Key Laboratory of Animal Nutrition and Feed Science in South ChinaGuangdong Provincial Key Laboratory of Animal Breeding and NutritionInstitute of Animal Science of Guangdong Academy of Agricultural SciencesGuangzhouGuangdong 510640China

Selenium nanoparticles(SeNPs)are proposed as a safer and more effective selenium delivery system than sodium selenite(Na_(2)SeO_(3)).Here,we investigated the effects of replacing dietary Na_(2)SeO_(3)with SeNPs synthesized by Lactobacillus casei ATCC 393 on the growth performance and gut health of earlyweaned ***-two piglets(Duroc×Landrace×Large Yorkshire)weaned at 21 d of age were divided into the control group(basal diet containing 0.3 mg Se/kg from Na_(2)SeO_(3))and SeNPs group(basal diet containing 0.3 mg Se/kg from SeNPs)during a 14-d feeding *** results revealed that SeNPs supplementation increased the average daily gain(P=0.022)and average daily feed intake(P=0.033),reduced(P=0.056)the diarrhea incidence,and improved(P=0.013)the feed conversion ratio compared with Na_(2)SeO_(3).Additionally,SeNPs increased jejunal microvilli height(P=0.006)and alleviated the intestinal barrier dysfunction by upregulating(Pearly-weaned piglets through participating in lipid ***,replacing dietary Na_(2)SeO_(3)with biogenic SeNPs could be a potential nutritional intervention strategy to prevent earlyweaning syndrome in piglets.

关键词： Selenium nanoparticle early-weaned piglet Gut homeostasis Gut microbiota

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Effect of Glutamine Supplementation on Intestinal Mucosal Protein,DNA and Mucosal Morphology of early-weaned piglets

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Agricultural Sciences in China 2002年第12期1卷 1376-1381页

作者： ZHANG Jun-min and GAO Zhen-chuan(Institute of Animal Science , Chinese Academy of Agricultural Sciences , Beijing 100094 . P. R. China) Institute of Animal Science Chinese Academy of Agricultural Sciences Beijing 100094 P.R.China

Forty piglets weaned at 21 days age were randomly assigned to one of two groups. The treatment group contained 1. 2% glutamine. The diets were calculated to be isonitrogenous and isoenergetic, each treatment contained five replicates of four piglets. Five piglets from each dietary treatment were killed at 35 days and 49 days age. The results showed that dietary glutamine supplementation increased jejunal DNA content of piglets in the treatment group at 35 days and 49 days age. There was no significant change of ileum DNA content and intestinal protein content between the treatment and control ones. Dietary glutamine supplementation increased mucosal thickness of piglets in treatment group markedly at 35 days age. The intestinal villus heights were significantly higher in treatment than that in control. The results of electron micrograph showed that dietary glutamine supplementation prevented deterioration of intestinal epithelium, and maintained normal intestinal microvillus structure. The results suggested that glutamine supplementation prevented villus atrophy, and had protective effect on intestinal structure.

关键词： Glutamine early-weaned piglet Intestinal mncosal morphology

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Dietary L-arginine supplementation enhances the immune status of early-weaned piglets

Dietary L-arginine supplementation enhances the immune statu...

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2007年动物营养、保健与饲料添加剂国际学术研讨会

作者： S.W.Kim I.Shinzato Department of Animal Science Texas A&M UniversityCollege Station Department of Animal and Food Sciences Texas Tech University Department of Animal Nutrition Ajinomoto Inc.

The study was conducted to evaluate the effect of dietary arginine supplementation on the immune status of early-weaned piglets.A total of 70 piglets weaned at 7 days of age were assigned randomly to 5 treatment groups(14 pigs/group),representing diets supplemented with 0, 0.2,0.4,0.6 and 0.8%L-arginine,*** Days 7 and 14 after initiation of the supplementation,the weights of immune organs,counts of leucocytes,serum concentrations of immunoglobulins and cytokines,as well as splenic expression of genes for cytokines were *** results showed that the relative weight of spleen in piglets supplemented with 0.2 and 0.8%arginine,as well as that of thymus in piglets supplemented with 0.6%arginine,increased, compared with the control group on Day *** supplementation with 0.8%arginine increased the numbers of white blood cells and granulocytes on Day 7 in comparison with other *** Day 14,the numbers of granulocytes and the granulocyte:leucocyte ratio were greater,while the numbers of lymphocytes and the lymphocyte:leucocyte ratio were lower in piglets supplemented with 0.2 and 0.4%arginine than in the control *** arginine supplementation for the first 7 days resulted in lower concentrations of serum IL-8 and IL-2,but higher concentrations of serum IgM and higher levels of splenic IL-8 gene *** Day 14,concentrations of serum IL-8 and IL-2 were lower,while concentrations of serum IgG,TNF and IL-6 as well as gene expression levels of splenic IL-8 and TNF were higher,in piglets treated with arginine than the control ***,these findings indicate that arginine supplementation may be beneficial for enhancing the immune status in early-weaned piglets.

关键词： Arginine early-weaned piglet Inhance Immune status

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early weaning leads to the remodeling of lipid profile in piglet jejunal crypt cells during post-weaning days

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Animal Nutrition 2022年第4期11卷 102-111页

作者： Yirui Shao Xia Xiong Kexing Wang Pi Cheng Lijun Zou Jian Zhou Ming Qi Yulong Yin CAS Key Laboratory of Agro-ecological Processes in Subtropical Region Institute of Subtropical AgricultureHunan Province Key Laboratory of Animal Nutritional Physiology and Metabolic ProcessNational Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry ProductionInstitute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125China University of Chinese Academy of Sciences Beijing 100008China Laboratory of Animal Nutrition and Human Health College of Life SciencesHunan Normal UniversityChangsha 410081China Hunan Key Laboratory of Traditional Chinese Veterinary Medicine Hunan Agricultural UniversityChangsha 410128China Laboratory of Basic Biology Hunan First Normal UniversityChangsha 410205China

Reportedly,proteins involved in lipid metabolism change significantly in the jejunal crypt cells of earlyweaned piglets,but the exact lipid profile change remains *** the present study,32 piglets weaned at 21 d of age were randomly divided into 4 groups with 8 *** jejunal crypt cells of a group of piglets on the post-weaning day(PWD)1,3,7,and 14 were isolated per time *** cell lipid profiles were analyzed using ultra-high-performance liquid chromatography coupled with hybrid quadrupole time-of-flight mass *** study showed that piglets suffered the greatest weaning stress on PWD 3 in terms of the lowest relative weight of the small intestine,the highest relative weight of the spleen,and the highest levels of malondialdehyde,cholesterol,and low-density lipoprotein *** lipid profile of jejunal crypt cells including carnitine,sulfatide,sphingomyelin,hexosylceramide,and ceramide greatly changed after weaning,especially between PWD3 and 14(Pearly *** findings might provide new therapeutical targets for intestinal dysfunctions caused by weaning stress.

关键词： early-weaned piglet Weaning stress Crypt cell Lipidomics Inflammation

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