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Dietary supplementation of laminarin improves the reproductive performance of sows and the growth of suckling piglets

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Journal of Animal Science and Biotechnology 2024年第1期15卷 329-343页

作者： Pengguang Zhang Guoyuan Jiang Chenghong Ma Yubo Wang Enfa Yan Linjuan He Jianxin Guo Xin Zhang Jingdong Yin State Key Laboratory of Animal Nutrition and Feeding College of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193China

Background Maternal nutrition is essential in keeping a highly efficient production system in the pig *** has been shown to improve antioxidant capacity,reduce the inflammatory response,and favor the homeostasis of intestinal ***,the effect of dietary supplementation of laminarin on the reproductive performance of sows and the growth of suckling offspring remains *** A total of 40 Landrace×Yorkshire multiparous sows on d 85 of gestation,similar in age,body weight(BW),parity and reproductive performance,were randomly divided into four dietary treatments with 10 sows per treatment,receiving a control diet(basal pregnancy or lactating diets)and a basal diet supplemented with 0.025%,0.05%and 0.10%laminarin,*** experiment lasted from d 85 of gestation to d 21 of *** Laminarin supplementation linearly increased number born alive per litter(P=0.03),average daily feed intake(ADFI,Psows during the lactation of 1–21 d(P=0.02).Furthermore,maternal laminarin supplementation increased the average daily gain(ADG)of piglets while tending to reduce the culling and death rate before *** addition,alterations to the composition of colostrum and milk,as well as to serum inflammatory cytokines and immunoglobulins of sows were *** fecal microbiota profile of sows supported the improvement of reproductive performance in sows and the growth performance in suckling *** Dietary supplementation of laminarin during late pregnancy and lactation could significantly improve reproductive performance of sows and growth performance of piglets.

关键词： Fecal microbiota Laminarin Milk Piglets Reproductive performance sows

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Effects of magnesium on the performance of sows and their piglets

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Journal of Animal Science and Biotechnology 2015年第1期6卷 55-62页

作者： Jianjun Zang Jingshu Chen Ji Tian Aina Wang Hong Liu Shengdi Hu Xiangrong Che Yongxi Ma Junjun Wang Chunlin Wang Guanghua Du Xi Ma State Key Laboratory of Animal Nutrition Ministry of Agriculture Feed Industry CentreChina Agricultural University Weifang Business Vocational College College of Animal Science and Veterinary Medicine Shanxi Agricultural University

The objective of this study was to evaluate the effects of supplemental magnesium （Mg） on the performance of gilts and parity 3 sows and their piglets. Fifty-six grits （Trial 1） and 56 sows （Trial 2） were assigned to one of 4 treatments according to their mating weight, respectively. The treatments comprised corn-soybean meal based gestation and lactation diets （0.21% magnesium） supplemented with 0, 0.015, 0.03, or 0.045% Mg from mating until weaning. The results showed that magnesium supplementation significantly （P 〈 0.05） reduced the weaning to estrus interval in both gilts and sows. There were significant effects （P 〈 0.05） of supplemental magnesium on the total number of piglets born, born alive and weaned in sows. In late gestation and lactation, the digestibility of crude fiber （quadratic effects, P 〈 0.05）, and crude protein （P 〈 0.05）, were significantly influenced by magnesium in gilts and sows, respectively. There were differences among the 4 groups in terms of the apparent digestibility of dry matter and crude fiber in sows （P 〈 0.0S） during both early and late gestation. The apparent digestibility of gross energy was increased for sows in late gestation （P 〈 0.05）, and lactation （quadratic effects, P 〈 0.0S）. At farrowing and weaning, serum prolactin levels and alkaline phosphate activities linearly increased in sows as the Mg supplementation increased （P 〈 0.0.5）. Serum Mg of sows at farrowing and serum urea nitrogen of sows at weaning was significantly influenced by Mg supplementation （P 〈 0.05）. The Mg concentration in sow colostrum and the serum of their piglets were increased by supplemental magnesium （P 〈 0.05）. In addition, growth hormone levels were linearly elevated （P 〈 0.05） in the serum of piglets suckling sows. Our data demonstrated that supplemental magnesium has the potential to improve the reproduction performance of sows, and the suitable supplemental dose ranged from 0.015% to 0.03%.

关键词： Gilts Magnesium Piglets Reproduction sows

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Current strategies for reproductive management of gilts and sows in North America

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Journal of Animal Science and Biotechnology 2015年第2期6卷 191-204页

作者： Robert R Kraeling Stephen K Webel L&R Research Associates JBS United Animal Health

Many advances in genetic selection, nutrition, housing and disease control have been incorporated into modern pork production since the 1950s resulting in highly prolific females and practices and technologies, which significantly increased efficiency of reproduction in the breeding herd. The objective of this manuscript is to review the literature and current industry practices employed for reproductive management. In particular the authors focus on assisted reproduction technologies and their application for enhanced productivity. Modern maternal line genotypes have lower appetites and exceptional lean growth potential compared to females of 20 yr ago. Thus, nutrient requirements and management techniques and technologies, which affect gilt development and sow longevity, require continuous updating. Failure to detect estrus accurately has the greatest impact on farrowing rate and litter size. Yet, even accurate estrus detection will not compensate for the variability in the interval between onset of estrus and actual time of ovulation. However, administration of GnRH analogs in weaned sows and in gilts after withdrawal of altrenogest do overcome this variability and thereby synchronize ovulation, which makes fixed-time AI practical. Seasonal infertility, mediated by temperature and photoperiod, is a persistent problem. Training workers in the art of stockmanship is of increasing importance as consumers become more interested in humane animal care. Altrenogest, is used to synchronize the estrous cycle of gilts, to prolong gestation for 2-3 d to synchronize farrowing and to postpone post-weaning estrus. P.G. 600~ is used for induction of estrus in pre-pubertal gilts and as a treatment to overcome seasonal anestrous. Sperm cell numbers/dose of semen is significantly less for post cervical AI than for cervical AI. Real-time ultrasonography is used to determine pregnancy during wk 3-5. PGF2a effectively induces farrowing when administered within two d of normal gestati

关键词： Gilts Management Nutrition Reproductive technology sows

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Effects of dietary coenzyme Q10 supplementation during gestation on the embryonic survival and reproductive performance of high‑parity sows

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Journal of Animal Science and Biotechnology 2023年第5期14卷 2197-2208页

作者： Shanchuan Cao Honglin Yan Wenjie Tang Hongfu Zhang Jingbo Liu School of Life Science and Engineering Southwest University of Science and TechnologyMianyang 621010China Department of Animal Resource and Science Dankook UniversityCheonan 31116Korea Livestock and Poultry Biological Products Key Laboratory of Sichuan Province Sichuan Animtech Feed Co.Ltd.Chengdu 610066China State Key Laboratory of Animal Nutrition Institute of Animal SciencesChinese Academy of Agricultural SciencesBeijing 100193China

Background Fertility declines in high-parity *** study investigated whether parity-dependent declines in embryonic survival and reproductive performance could be restored by dietary coenzyme Q10(CoQ10)*** Two experiments were *** Exp.1,30 young sows that had completed their 2nd parity and 30 high-parity sows that had completed their 10^(th)parity,were fed either a control diet(CON)or a CON diet supple-mented with 1 g/kg CoQ10(+CoQ10)from mating until slaughter at day 28 of *** Exp.2,a total of 314 post-weaning sows with two to nine parities were fed the CON or+CoQ10 diets from mating throughout *** In Exp.1,both young and high-parity sows had a similar number of corpora lutea,but high-parity sows had lower plasma CoQ10 concentrations,down-regulated genes involved with de novo CoQ10 synthesis in the endome-trium tissues,and greater levels of oxidative stress markers in plasma and endometrium ***-parity sows had fewer total embryos and alive embryos,lower embryonic survival,and greater embryo mortality than young *** CoQ10 supplementation increased the number of live embryos and the embryonic survival rate to levels simi-lar to those of young sows,as well as lowering the levels of oxidative stress *** Exp.2,sows showed a parity-dependent decline in plasma CoQ10 levels,and sows with more than four parities showed a progressive decline in the number of total births,live births,and piglets born *** supplementation with CoQ10 increased the number of total births,live births,and born effective,and decreased the intra-litter covariation coefficients and the percentage of sows requiring farrowing assistance during *** Dietary CoQ10 supplementation can improve the embryonic survival and reproductive performance of gestating sows with high parity,probably by improving the development of uterine function.

关键词： Coenzyme Q10 Embryonic survival Oxidative stress Parity sows

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Standardized ileal digestibility of amino acids in soybean meal fed to non-pregnant and pregnant sows

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Journal of Animal Science and Biotechnology 2024年第1期15卷 362-373页

作者： Ke Wang Ya Wang Lei Guo Yong Zhuo Lun Hua Lianqiang Che Shengyu Xu Ruinan Zhang Jian Li Bin Feng Zhengfeng Fang Xuemei Jiang Yan Lin De Wu Institute of Animal Nutrition Key Laboratory for Animal Disease‑Resistance Nutrition of ChinaMinistry of EducationSichuan Agricultural University211 Huimin RoadWenjiang DistrictChengdu 611130SichuanChina

Background Two studies were designed to determine standard ileal crude protein(CP)and amino acid(AA)digestibility of soybean meal(SBM)from different origins fed to non-pregnant and pregnant *** solvent-extracted SBMs from soybeans produced in the USA,Brazil,and China were *** Exp.1,eight different diets were created:a nitrogen(N)-free diet and 7 experimental diets containing SBM from different origins as the only N *** non-pregnant,multiparous sows were arranged in an 8×8 Latin square design(8 periods and 8 diets).In Exp.2,the diet formula was the same as in *** gestating sows(parity 3)were assigned to 4 different diets in a replicated 4×3 Youden square design(three periods and four diets)in mid-gestation and again in late-gestation *** When fed to non-pregnant and late-gestating sows,the standardized ileal digestibility(SID)of CP and most AAs from different SBM were not significantly different(P>0.05).When fed to mid-gestating sows,the SID values for Arg,His,Lys,Phe,Cys,Gly,Ser,and Tyr in SBM 1 were lower than in SBM 4 and 5(Psows had significantly greater SID values for Lys,Ala,and Asp during mid-gestation when compared with late-gestation stages(Psows had greater SID value for Val and lower SID value for Tyr when compared with non-pregnant and late-gestating sows(Psows had significantly greater SID value for Met when compared with gestating sows(Psows,the SID values for most AAs varied among SBM *** SID values for Lys,Met,Val,Ala,Asp,and Tyr in SBM were affected by sow gestation *** findings provide a cornerstone for accurate SBM use in sow diets.

关键词： Amino acids sows Soybean meal Standardized ileal digestibility

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Multi‑omics analysis reveals gut microbiota‑ovary axis contributed to the follicular development difference between Meishan and Landrace×Yorkshire sows

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Journal of Animal Science and Biotechnology 2023年第5期14卷 1954-1968页

作者： Baoyang Xu Wenxia Qin Yuwen Chen Yimei Tang Shuyi Zhou Juncheng Huang Libao Ma Xianghua Yan State Key Laboratory of Agricultural Microbiology Hubei Hongshan LaboratoryFrontiers Science Center for Animal Breeding and Sustainable ProductionCollege of Animal Sciences and TechnologyHuazhong Agricultural UniversityWuhan 430070HubeiChina The Cooperative Innovation Center for Sustainable Pig Production Wuhan 430070HubeiChina Hubei Provincial Engineering Laboratory for Pig Precision Feeding and Feed Safety Wuhan 430070HubeiChina

Background The mechanism by which Meishan(MS)sows are superior to white crossbred sows in ovarian follicle development remains *** gut microbiota could regulate female ovarian function and reproductive capacity,this study aimed to determine the role of gut microbiota-ovary axis on follicular development in *** We compared the ovarian follicular development,gut microbiota,plasma metabolome,and follicular fluid metabolome between MS and Landrace×Yorkshire(L×Y)sows.A H_(2)O_(2)-induced cell apoptosis model was used to evaluate the effects of multi-omics identified metabolites on the apoptosis of porcine ovarian granulosa cells in *** Compared with L×Y sows,MS sows have greater ovary weight and improved follicular development,including the greater counts of large follicles of diameter≥5 mm,secondary follicles,and antral follicles,but lesser atretic *** ovarian granulosa cells in MS sows had alleviated apoptosis,which was indicated by the increased BCL-2,decreased caspases-3,and decreased cleaved caspases-3 than in L×Y *** ovarian follicular fluid of MS sows had higher concentrations of estradiol,progesterone,follicle-stimulating hormone,luteinizing hormone,and insulin like growth factor 1 than L×Y *** microbiota of MS sows formed a distinct cluster and had improved alpha diversity,including increased Shannon and decreased Simpson than those of L×Y *** to the enhanced function of carbohydrate metabolism and elevated short-chain fatty acids(SCFAs)in feces,the differential metabolites in plasma between MS and L×Y sows are also mainly enriched in pathways of fatty acid *** were significant correlations among SCFAs with follicular development,ovarian granulosa cells apoptosis,and follicular fluid hormones,***,compared with L×Y sows,MS sows had higher follicular fluid SCFAs concentrations which could ameliorate H_(2)O_(2)-induced porcine granulosa cells apoptosis in ***

关键词： Follicular development Granulosa cells apoptosis Gut microbiota Short-chain fatty acids sows

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Modified halloysite nanotubes reduce the toxic effects of zearalenone in gestating sows on growth and muscle development of their offsprings

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Journal of Animal Science and Biotechnology 2016年第4期7卷 570-578页

作者： Rui Gao Qingwei Meng Jianan Li Min Liu Yuanyuan Zhang Chongpeng Bi Anshan Shan Institute of Animal Nutrition Northeast Agricultural University

Background： Zearalenone （ZEN） is an estrogenic mycotoxin that is primarily produced by Fusarium fungi and has been proven to affect the reproductive capacity of many species to varying degrees. The present experiment was designed to study the maternal persistent effects of zearalenone toxicity in gestating sows on growth and muscle development of their offsprings, and the alleviation of zearalenone toxicity by modified halloysite nanotubes （MHNTs）. Methods： Eighteen sows were fed with one of three dietary treatments that included the following：（1） a control diet, （2） a contaminated grain diet （with 50 % moldy corn, 2.77 mg/kg ZEN）, and （3） a contaminated grain diet （with 50 % moldy corn, 2.76 mg/kg ZEN）＋ 1% MHNTs. Each sow was exclusively fed its experimental diets from 35 to 70 d of gestation at a total of 2 kg daily. Muscle samples were collected from six piglets per treatment at birth, weaning and finishing. Results： The results showed that feeding the sows with the ZEN-contaminated diets from 35 to 70 d of gestation decreased the ADG, ADFI and G：F of their offsprings （P 〈 0.05）. The muscle fiber numbers in the newborn, weaning and growing-finishing pigs and the muscle fiber diameters at birth and weaning were also decreased by maternal ZEN exposure （P 〈 0.05）. The expressions of IGF-I, IGF-II, Myf-5 and Mstn at birth and IGF-II, Pax7, Myf-5 and MyoD1 at weaning were altered by feeding gestating sows with ZEN-contaminated diets （P 〈 0.05）. The MHNTs reduced most of the ZEN-induced toxic effects： the ADG and ADFI on growth performance, the muscle fiber numbers at weaning and finishing and the muscle fiber diameters at weaning （P 〈 0.05）. The expression levels of IGF-II and Mstn in newborn piglets and IGF-II and Myf-5 in weaning piglets were also prevented by adding 1% MHNTs （P 〈 0.05）. Conclusions： The present study demonstrated that the offsprings of sows fed with ZEN-contaminated diets from 35 to 70 day of gestation exhibited weakening on growth performance, p

关键词： Growth MHNTs Muscle development Offsprings sows Zearalenone

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A systematic review and meta-analysis of dietary fat effects on reproductive performance of sows and growth performance of piglets

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Journal of Animal Science and Biotechnology 2022年第3期13卷 662-681页

作者： Lixue Wang Shuai Zhang Lee J.Johnston Crystal L.Levesque Jingdong Yin Bing Dong State Key Laboratory of Animal Nutrition College of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193China West Central Research and Outreach Center University of MinnesotaMorrisMN 56267USA Department of Animal Science College of Agriculture and Biological SciencesSouth Dakota State UniversityBrookingsSD 57007USA

Effects of added fat in sow diets on the sows’reproductive performance and offspring growth performance are influenced by multiple factors such as genetics,nutrition,parity,ambient temperatures,and farm *** studies cannot cover all these *** the view to address this challenge,we searched all studies that were published from 1986 to 2020,and performed a systematic review and meta-analysis on the fat *** total,19 papers were collected and *** supplementation in sow diets during late gestation and lactation decreased average daily feed intake(ADFI,Psows fed diets with added fat had increased milk fat concentration(P=0.03)and shorter wean to estrus intervals(WEI,P=0.01).In specific circumstances,fat supplementation tended to improve growth performance of piglets with low litter weights at birth(P=0.14),or when the sows lost large amounts of body weight during lactation(P=0.11).The level of supplemented fat was 10%and higher would decrease liveborn per litter at neutral temperature(P=0.10).The meta-analysis revealed that fat supplementation to sows diet during late gestation and lactation can be beneficial for sow reproductive performance and litter growth performance.

关键词： Diets Fat Growth performance Piglets Reproductive performance sows

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A behavior and physiology-based decision support tool to predict thermal comfort and stress in non-pregnant,mid-gestation,and late-gestation sows

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Journal of Animal Science and Biotechnology 2023年第2期14卷 814-826页

作者： Betty R.McConn Allan P.Schinckel Lindsey Robbins Brianna N.Gaskill Angela R.Green‑Miller Donald C.Lay Jr Jay S.Johnson Oak Ridge Institute for Science and Education Oak RidgeTN 37830USA Department of Animal Sciences Purdue UniversityWest LafayetteIN 47907USA Department of Agricultural and Biological Engineering University of IllinoisUrbanaIL 61801USA USDA-ARS Livestock Behavior Research Unit West LafayetteIN 47907USA.

Background:Although thermal indices have been proposed for swine,none to our knowledge differentiate by reproductive stage or predict thermal comfort using behavioral and physiological *** study objective was to develop a behavior and physiology-based decision support tool to predict thermal comfort and stress in multiparous(3.28±0.81)non-pregnant(n=11),mid-gestation(n=13),and late-gestation(n=12)***:Regression analyses were performed using PROC MIXED in SAS 9.4 to determine the optimal environmental indicator[dry bulb temperature(TDB)and dew point]of heat stress(HS)in non-pregnant,mid-gestation,and lategestation sows with respiration rate(RR)and body temperature(TB)successively used as the dependent variable in a cubic function.A linear relationship was observed for skin temperature(T_(S))indicating that TDB rather than the sow HS response impacted T_(S)and so T_(S)was excluded from further *** stage was significant for all analyses(Psows and occurred at 25.5,25.1,and 24.0℃,*** HS inflection points differed for non-pregnant,mid-gestation,and late gestation sows and occurred at 28.1,27.8,and 25.5℃,*** HS inflection points were similar for non-pregnant and mid-gestation sows(32.9℃)but differed for late-gestation sows(30.8℃).These data were integrated with previously collected behavioral thermal preference data to estimate the TDB that non-pregnant,mid-gestation,and late-gestation sows found to be cool(TDBsows at three reproductive *** dev

关键词： Decision support Gestation Heat stress Management sows Thermal index

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A fermented rapeseed meal additive:Effects on production performance,nutrient digestibility,colostrum immunoglobulin content and microbial flora in sows

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Animal Nutrition 2019年第4期5卷 373-379页

作者： Eugeniusz R.Grela Anna Czech Martyna Kiesz Lukasz Wlazlo Bozena Nowakowicz-Debek Institute of Animal Nutrition and Bromatology University of Life Sciences in LublinLublin20-950Poland Department of Biochemistry and Toxicology Faculty of BiologyAnimal Sciences and BioeconomyUniversity of Life Sciences in LublinLublin20-950Poland Department of Animal Hygiene and Environment Faculty of Biology and Animal BreedingUniversity of Life Sciences in LublinLublin20-950Poland

This study was to assess the effect of fermented rapeseed meal(FRSM) in the diet of sows,taking into account the physiological period(pregnancy or lactation) and reproductive cycle(primiparous or multiparous sows),on production performance,nutrient digestibility,colostrum immunoglobulin content,and microbial flora in *** experimental material included 30 primiparous gilts and 30 multiparous sows after their second *** animals in the control groups C_G(gilts) and Cs(sows)received a standard diet for pregnant or lactating sows,depending on the reproductive *** groups E_G and E_S comprised gilts and multiparous sows,respectively,receiving a diet with a 4%share of FRSM in place of soybean meal up to 100 d of *** addition,from 100 d of gestation to7 d of lactation,the sows in experimental groups received a diet with a 9% share of FRSM,and then again a diet with a 4% share of FRSM until the end of *** addition of 4% to 9% share of a FRSM component in feed significantly improves production parameters,mainly in primiparous gilts,leading to an increase in litter size and in litter weight at 28 d of *** also helps to improve the digestibility of crude protein,fat,and crude fiber,and positively affects the gut microbiota of *** of rapeseed meal is an effective way to reduce anti-nutrients and to increase the level of lactic acid in the diet It also stimulates the immune system,which improves piglet health,reducing the severity of diarrhoea and mortality.

关键词： Fermented rapeseed meal sows Microbiota Digestibility Colostrum

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