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Increased CO2 Levels during the First Half of Incubation at High Altitude Modifies Embryonic development of Fertile Leghorn Breeder Eggs

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Food and Nutrition Sciences 2024年第7期15卷 524-547页

作者： Marco A. Juárez-Estrada Erik I. López-Ruiz Sonia López-Cordova Guillermo Tellez-Isaias Omar F. Prado-Rebolledo departamento de Medicina y Zootecnia de Aves Facultad de Medicina Veterinaria y Zootecnia Universidad Nacional Autnoma de Mxico Ciudad de Mxico Mxico department of Poultry Science Division of Agriculture University of Arkansas Fayetteville USA Facultad de Medicina veterinaria y Zootecnia Universidad de Colima Tecomn Mxico

The exchange of oxygen (O2) and carbon dioxide (CO2) within an incubator has a significant impact on embryonic development (ED) and hatching processes. This study examines the influence of non-ventilation (NV) conditions during the first ten days of incubation at high altitudes on Leghorn hens hatching eggs. Five hundred four hatching eggs were equally divided into three treatment groups and placed in twelve incubators (R = 4). The first group was subjected to standard ventilated conditions (V) during the setting phase. The ventilation inlet holes of the remaining incubators in the NV treatments were closed with either micropore (M) or polypropylene (P) tape, referred to as NVM and NVP groups, respectively. These two different airtight settings were intended to allow for a gradual rise in CO2 naturally generated by the embryos. Results indicate that carbon dioxide concentration gradually increased during the first half of incubation, reaching 1.42% in the NVM group and 1.20% in the NVP group, while the V condition group remained at 0.15%. From 10 days of incubation onwards, normal V conditions were restored in all incubators. The highest hatchability of fertile eggs (HFE) was shown by the NVP group (55.7%), followed by the V (52.6%) and NVM (38.6%) groups. The NVP group showed a greater yolk-free body mass (YFBM) from 10 days of incubation until the hatch basket transfer. NV conditions during the first 10 days of incubation at high altitude produced higher YFBM with gradually decreasing yolk sac mass. In comparison to the NVM and V conditions, the particular NVP condition showed a beneficial impact on the quality of hatched chicks. Sustaining NVP condition (1.2% of CO2) throughout the first half of incubation at high altitude generated the optimal environment in the incubator ensuring the best hatchability results. This study highlights how important it is for hatchery managers to recognize the influence of low O2 and high levels of CO2 on the development trajectori

关键词： Non-Ventilation Hypercapnia Hypoxia Egg Mass Loss Hatchability Embryonic Mortality Hatchling Chick Quality

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Clinicopathological alterations in wild mammals from the reservoir system of Trypanosoma cruzi:a scoping review

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Animal Diseases 2024年第1期4卷 48-58页

作者： Ricardo Sanchez Pérez JoséManuel Aranda-Coello JoséAntonio de Fuentes Vicente Oscar Rico Chavez Facultad de Estudios Superiores Cuautitlan Universidad Nacional Autonoma deMexicoCuautitlan lzcalliEstadodeMexicoMexico El Colegio de la Frontera Sur-Unidad Campeche CampecheCampecheMexico Instituto de Ciencias Biologicas-Universidad de Ciencias y Artes de Chiapas Tuxtla GutierrezChiapasMexico Facultad de Medicina veterinaria y Zootecnia-Universidad Nacional Autonoma deMexico Ciudad deMexicoMexico

Trypanosoma cruzi is the etiologic agent of Chagas *** flagellated protozoan is transmitted to humans as well as different species of domestic and wild animals via vectors from the Reduviidae family(known as"kissing bugs").despite the fact that hundreds of species of wild mammals are part of the reservoir system,the morphologi-cal changes and clinical manifestations resulting from the pathogenesis of the infection have been largely *** aim of this review is to systematically compile the available information regarding clinicopathological altera-tions in wild mammals due to natural infection by *** was obtained from six online bibliographic data search platforms,resulting in the identification of 29 publications that met the inclusion *** was the most common clinical manifestation,cardiac damage was the main finding at necropsy,and lymphoplas-macytic inflammation was the most frequent microscopic ***,regardless of its role as a reservoir,*** has the potential to affect the health status of wild mammals,a situation that highlights the need for further research to analyze,measure,and compare its effects at both the individual and population levels.

关键词： Trypanosoma cruzi Chagas disease American trypanosomiasis Clinicopathological alterations Natural infection Wild mammals

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debaryomyces hansenii supplementation in low fish meal diets promotes growth,modulates microbiota and enhances intestinal condition in juvenile marine fish

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Journal of Animal Science and Biotechnology 2024年第1期15卷 253-276页

作者： Ignasi Sanahuja Alberto Ruiz Joana P.Firmino Felipe E.Reyes-López Juan B.Ortiz-delgado Eva Vallejos-Vidal Lluis Tort Dariel Tovar-Ramírez Isabel M.Cerezo Miguel A.Moriñigo Carmen Sarasquete Enric Gisbert Aquaculture Program Institute of Agrifood Research and Technology(IRTA)La Rapita 43540Spain Centro de Biotecnologia Acuicola Universidad de Santiago de ChileSantiagoChile Instituto de Ciencias Marinas de Andalucia(ICMAN-CSIC) Avda.Republica Saharaui no 2Campus Universitario Rio San PedroPuerto RealCadiz 11510Spain Nucleo de Investigaciones Aplicadas en Ciencias veterinarias y Agronomicas Facultad de Medicina Veterinaria y AgronomiaUniversidad de Las AmericasSantiagoChile department of Cell Biology Physiologyand ImmunologyUniversitat Autonoma de BarcelonaBarcelonaSpain Centro de Investigaciones Biologicas del Noroeste SC CIBNORLa PazMexico department of Microbiology Instituto de Biotecnologia Y Desarrollo Azul(IBYDA)Faculty of SciencesUniversity of Malaga29010 MalagaSpain SCBI Bioinformatic UnitUniversity of Malaga29590 MalagaSpain

Background The development of a sustainable business model with social acceptance,makes necessary to develop new strategies to guarantee the growth,health,and well-being of farmed *** hansenii is a yeast species that can be used as a probiotic in aquaculture due to its capacity to i)promote cell proliferation and differen-tiation,ii)have immunostimulatory effects,iii)modulate gut microbiota,and/or iv)enhance the digestive *** provide inside into the effects of *** on juveniles of gilthead seabream(Sparus aurata)condition,we inte-grated the evaluation of the main key performance indicators coupled with the integrative analysis of the intestine condition,through histological and microbiota state,and its transcriptomic *** After 70 days of a nutritional trial in which a diet with low levels of fishmeal(7%)was supplemented with 1.1%of ***(17.2×10^(5) CFU),an increase of ca.12%in somatic growth was observed together with an improve-ment in feed conversion in fish fed a yeast-supplemented *** terms of intestinal condition,this probiotic modu-lated gut microbiota without affecting the intestine cell organization,whereas an increase in the staining intensity of mucins rich in carboxylated and weakly sulphated glycoconjugates coupled with changes in the affinity for certain lectins were noted in goblet *** in microbiota were characterized by the reduction in abundance of several groups of Proteobacteria,especially those characterized as opportunistic *** microarrays-based transcrip-tomic analysis found 232 differential expressed genes in the anterior-mid intestine of ***,that were mostly related to metabolic,antioxidant,immune,and symbiotic *** Dietary administration of *** enhanced somatic growth and improved feed efficiency param-eters,results that were coupled to an improvement of intestinal condition as histochemical and transcriptomic tools *** probiotic ye

关键词： debaryomyces hansenii Intestine condition Low fish meal diet Microbiota Transcriptomics Yeast probiotic

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Efficacy of 1% Permethrin and 2% Permethrin Combined with 1% Piperonyl Butoxide against Rhipicephalus sanguineus Ticks in Naturally Infested Dogs

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Pharmacology & Pharmacy 2024年第7期15卷 237-247页

作者： Andrea Márquez-Aguado Froylán Ibarra-Velarde Joaquín Ambia-Medina Rosa Arias-García departamento de Parasitologa Facultad de Medicina Veterinaria y Zootecnia Universidad Nacional Autnoma de Mxico Mexico City Mxico Laboratorios Salud Animal S.A de C.V. Mexico City Mxico

The aim of the present study was to compare the ixodicide efficacy of 1% permethrin applied as a shampoo-bath in single treatment and a combined formulation of 2% permethrin + 1% piperonyl butoxide applied as powder in a single treatment against Rhipicephalus sanguineus ticks, in naturally infested dogs. Eighteen adult cross-mixed dogs, harboring to at least 20 ticks/animal, were selected on pre-treatment live tick counts. On day 0, the dogs were then divided in 3 groups of 6 animals each, for treatment: Group 1 (G1) received 1% permethrin applied as shampoo-bath (approximately 10 ml/kg bw), according to label instructions. G2 was treated with 2% permethrin + 1% piperonyl butoxide applied as powder, and rubbed as massage on the body, as recommended by the producer. G3 served as a non-treated control. After the treatment, the dogs were checked out for live ticks counting on days 0, 1, 7, and 14. The ixodicide efficacy was assessed based on the percentage reductions of ticks on the days analyzed post-treatment, with respect to the untreated control. Results showed that permethrin alone removed ticks on 81%, 93.1% and 89.6% for days 1, 7 and 14, respectively. The combined formulation of 2% permethrin + 1% piperonyl butoxide exerted a better efficacy of 98.8, 97.7 and 97.0%, respectively. It is concluded that this combined formulation was highly effective at rapidly repelling and killing Riphicephalus sanguineus ticks on naturally infected dogs, showing a significant effect on days 1, 7 and 14 after tick exposure. The sustained high and quick level of efficacy of this combination may well interfere with the transmission of Riphicephalus sanguineus ticks. It is concluded that the sustained high level of efficacy of the permethrin + piperonyl butoxide combination may well exert an additive effect and could interfere with the transmission of Riphicephalus sanguineus ticks.

关键词： Efficacy Permethrin Permethrin + Piperonyl Butoxide Riphicephalus sanguineus Dogs

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Pig Reproductive and Respiratory Syndrome Virus (PRRSV) Does Not Attach to Boar Sperm;It Affects Only the Velocity Pattern and the Mobility Pattern

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Journal of Biosciences and Medicines 2024年第4期12卷 216-228页

作者： Néstor Méndez Palacios Netzi Naidí Mendez Palacios Felicitas Vázquez Flores José Alfredo Galicia Domínguez Edgar Guadalupe Beltrán Rosas Maximino Méndez Mendoza Facultad de Medicina veterinaria and Zootecnia-Benemé rita Universidad Aut&#243noma de Puebla Puebla Mexico Independent Advisor in the Porcine Area Puebla Mexico

The purpose of the study was to evaluate the sperm viability of semen infected with PRRSV viral particles, observing the effect of the Virus on the motility of boar sperm. The work was carried out at the FMVZ-BUAP Genetics and Reproduction Laboratory. 5 stallions were used. Each sample contained 1 × 106 sperm, the PRRS virus strain was ATCC-VR-2332 (0, 102, 104 and 106 copies of RNA/mL in triplicate), it was observed daily at the CASA;Hamilton Thorne®. Cells with MT (P 2 and 10X6 (P 2) 162.81 ± 10.65 and (106) 177.12 ± 5.77 vs 193.04 ± 4.62 of control. This indicates that altering these parameters would be related to fertility and the PRRS virus affects the LCV. Regarding the VSL, it was observed that the sperm infected with viruses 102, 104 and 106 of 48.00 ± 3.38, 49.88 ± 1.83 and 50.55 ± 2.24 Vs. 56.66 ± 1.68 of control respectively, the control would have greater possibilities of fertilizing the oocyte. In this study, it was found (P ≤ 0.01) in the VAP with 102 of 77.26 ± 5.16, 104 with 83.35 ± 2.41 and 106 with 81.29 ± 3.14 vs the control with 90.56 ± 2.07. Regarding the ALH there is (P 4 with 8.70 ± .26 and 106 with 9.64 ± 0.23 vs control 8.50 ± 0.27. The presence of different concentrations of PRRSV in boar semen induces changes in different types of sperm motility. Infection of ej

关键词： PRRSV Boar Sperms Velocity Pattern and Mobility Pattern

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Implementation of a New Solution for the Preservation of Anatomical Specimens Made of Non-Toxic Substances

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Open Journal of Veterinary Medicine 2024年第3期14卷 56-67页

作者： Ma Reyes Pichardo-Molinero Samantha Jardon-Xicotencatl Misael R. Oliver-González Carlos G. García-Tovar Laboratorio de Apoyo Técnico a la Anatomía Facultad de Estudios Superiores Cuautitlán Universidad Nacional Autónoma de México Estado de México Mexico Unidad de Investigación Multidisciplinaria L4 (Morfología veterinaria y Biología Celular) Facultad de Estudios Superiores Cuautitlán Universidad Nacional Autónoma de México Estado de México Mexico

The preservation of anatomical pieces in Veterinary Anatomy is essential since it is not possible to dissect all domestic species. Most techniques use reagents with high levels of toxicity such as formaldehyde. The objective of this work was to develop a new preservation technique that uses reagents with zero toxicity and that allows obtaining preserved pieces suitable for anatomical studies. The alcohol propylene glycol technique was developed, the method of which uses a fixation step with alcohol, sodium chloride, commercial vinegar and subsequently the impregnation of the preservation solution made from propylene glycol and commercial vinegar, which are non-toxic. As a result of this work, adequately preserved sheep hearts were obtained that preserved their morphology with slight changes in size and weight, which did not affect their external and internal anatomical structure. Its coloration was not substantially affected, remaining a little lighter. The pieces obtained showed flexibility which allowed dissections to be carried out. The time to develop the technique was 20 days. A comparative study was carried out with the phenolated glycerin technique that uses toxic reagents (formaldehyde and phenol) and the pieces obtained with the alcohol propylene glycol technique were of better quality, observing that the pieces with phenolated glycerin tend to darken and are more rigid. And the time to develop the technique is 24 days. In conclusion, a preservation technique for anatomical pieces was developed that allowed the preservation of the organs under study, which allow their use for anatomical studies, and which have been preserved without changes until the time of this publication (8 months) and there are pieces preserved with this technique for 2 years.

关键词： Veterinary Anatomy Heart Preservation Techniques Alcohol Propylene Glycol Technique Fixation Necropsy Toxic Chemicals

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deregulation of interferon-gamma receptor 1 expression and its implications for lung adenocarcinoma progression

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World Journal of Clinical Oncology 2024年第2期15卷 195-207页

作者： Angeles C Tecalco-Cruz Karen H Medina-Abreu Enrique Oropeza-Martínez Jesus Zepeda-Cervantes AleidaVázquez-Macías Marina Macías-Silva Posgrado en Ciencias Genómicas Universidad Autónoma de la Ciudad de MéxicoCDMX 03100Mexico Facultad de Medicina veterinaria y Zootecnia Universidad Nacional Autónoma de MéxicoCDMX 04510Mexico Colegio de Ciencias y Humanidades Universidad Autónoma de la Ciudad de MéxicoCDMX 03100Mexico Instituo de Fisiología Celular Universidad Nacional Autónoma de MéxicoCDMX 04510Mexico

Interferon-gamma(IFN-γ)plays a dual role in cancer;it is both a pro-and an antitumorigenic cytokine,depending on the type of *** deregulation of the IFN-γcanonic pathway is associated with several disorders,including vulner-ability to viral infections,inflammation,and cancer *** particular,the interplay between lung adenocarcinoma(LUAD)and viral infections appears to exist in association with the deregulation of IFN-γ*** this mini-review,we investigated the status of the IFN-γsignaling pathway and the expression level of its components in ***,a reduction in IFNGR1 expression seems to be associated with LUAD progression,affecting defenses against viruses such as severe acute respiratory syndrome coronavirus *** addition,alterations in the expression of IFNGR1 may inhibit the antiproliferative action of IFN-γsignaling in LUAD.

关键词： Interferon-gamma IFNGR1 JAK1 Antiviral Anti-tumor Lung adenocarcinoma

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Correlation between Intestinal Health and Coccidiosis Prevalence in Broilers during Different Seasons of the Year in Brazil from 2012 to 2018

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Food and Nutrition Sciences 2024年第3期15卷 179-198页

作者： Fabio Luis Gazoni Gabriela Miotto Galli Marcel Manente Boiago Lenita Moura Stefani Aline Zampar Marco A. Juárez-Estrada Guillermo Tellez-Isaias Aleksandro S. da Silva Animal Health and Reproduction Veterinary Medicine Graduate Program Federal University of Santa Maria (UFSM) Santa Maria Brazil Animal Science Graduate Program Federal University of Rio Grande do Sul (UFRGS) Porto Alegre Brazil Animal Science Graduate Program Santa Catarina State University (UDESC) Chapecó Brazil departamento de Medicina y Zootecnia de Aves Facultad de Medicina Veterinaria y Zootecnia Universidad Nacional Autonoma de Mexico Ciudad Universitaria Ciudad de Mexico Mexico department of Poultry Science Division of Agriculture University of Arkansas Fayetteville AR USA

Coccidiosis is a disease caused by intracellular protozoan parasites, specifically belonging to the genus Eimeria. These parasites target the gastrointestinal tract in different types of hosts, causing sores in the intestinal lining. The presence of these lesions reduces the animal’s ability to digest and absorb nutrients, significantly impacting their overall performance. The current study aimed to explore the potential correlation between seasonal variations and the incidence of Eimeria spp-induced lesions in broiler chickens’ gastrointestinal tracts in Brazil from 2012 to 2018. A total of 8,607 broiler chickens, aged 14 to 42 days, were sampled from 103 poultry integrated companies in Brazil to conduct intestinal health examinations. The sampling process involved selecting 3 to 6 chickens from each poultry house for examination. The assessment included various abnormalities such as shedding of intestinal cells and excessive fluid and mucus presence, thickening and tension of the intestines, food movement, roughened mucosal surface resembling a Turkish towel in the small intestine, tissue death, duodenal inflammation, intestinal inflammation, gizzard erosion, presence of worms and bedding material, and ingestion of mealworms. During the seasons, winter exhibited the highest average occurrence of Eimeria maxima microorganisms at 52.83%, with E. acervulina following closely at 26.42% in second place. In spring, E. maxima had an occurrence of 11.31%, while in fall, E. tenella had the lowest occurrence at 6.74%. When analyzing the seasonal occurrence of Eimeria, it was observed that E. maxima micro was more common during winter compared to summer (P = 0.0491). However, no discernible variation was observed in the occurrence of the remaining species across different seasons. Research findings suggest that subclinical coccidiosis is most prevalent during the winter season in Brazil. Likewise, clinical disease caused by E. acervulina is also prevalent during this time. I

关键词： Eimeria Epidemiology Intestinal Pathology Broiler Chickens Brazil

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The Beneficial Effects of Components of Garlic (Allium sativum L.) in the Poultry Industry

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Food and Nutrition Sciences 2024年第1期15卷 27-57页

作者： Alejandra Meza-Rios Gilberto Velazquez-Juarez Inkar Castellanos-Huerta Rocio Ivette Lopez-Roa Luis A. Anguiano-Sevilla Xochitl Hernanez-Velasco Xochitl Hernanez-Velasco Saeed El-Ashram Ebtsam Al-Olayan Billy Hargis Guillermo Tellez-Isaias Adelaida Sara Minia Zepeda-Morales departamento de Farmacobiología CUCEI Universidad de Guadalajara Blvd. M. García Barragán Guadalajara México Laboratorio de Análisis Fisicoquímicos Externos Departamento de Química CUCEI Universidad de Guadalajara Boulevard Marcelino García Barragán Guadalajara México Center of Excellence for Poultry Science Department of Poultry Science Dale Bumpers College of Agricultural Food and Life Sciences University of Arkansas Cumberland United States Laboratorio de Investigación y desarrollo Farmacéutico Departamento de Farmacobiología CUCEI Universidad de Guadalajara Boulevard Marcelino García Barragán Guadalajara México departamento de Medicina y Zootecnia de Aves Facultad de Medicina Veterinaria y Zootecnia UNAM Mexico Mexico Zoology department Faculty of Science Kafrelsheikh University Kafr El-Sheikh Egypt department of Zoology College of Science King Saud University Riyadh Saudi Arabia Laboratorio de Análisis Clínicos y Bacteriológicos (vinculación) Departamento de Farmacobiología CUCEI Universidad de Guadalajara Boulevard Marcelino García Barragán Guadalajara México

Plant-based antimicrobial agents are readily available, cost-effective, and exhibit low toxicity, making them promising alternatives in combatting microbial infections. Among these plants, garlic (Allium sativum) stands out for its traditional medicinal use in effectively combating various microorganisms. In the poultry industry, preventing avian virus and bacterial infections is paramount for chicken husbandry. However, using conventional drugs poses potential risks to human health. Garlic, a widely used Asian plant in traditional medicine for various pathologies, has shown potential as an herbal prophylactic remedy against viral and bacterial infections. Recently, researchers explored garlic and its derivatives as a scientific strategy in veterinary practices for diverse purposes, such as improving poultry production characteristics and acting as antibiotic growth promoters. This comprehensive review delves into garlic and its derivatives as preventive and corrective treatments for viral diseases in laying hens and broilers. The paper highlights their potential effectiveness and safety as a natural means to enhance poultry health and welfare while mitigating the risks associated with conventional drug usage in the food industry.

关键词： Garlic Antiviral Veterinary Chickens Allium sativum

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Extracellular vesicles from oviductal and uterine fluids supplementation in sequential in vitro culture improves bovine embryo quality

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Journal of Animal Science and Biotechnology 2023年第1期14卷 114-133页

作者： Cláudia Lima Verde Leal Karina Canón-Beltrán Yulia N.Cajas Meriem Hamdi Aracelli Yaryes María Gemma Millán de la Blanca Paula Beltrán-Brena Rosane Mazzarella Juliano Coelho da Silveira Alfonso Gutiérrez-Adán Encina M González Dimitrios Rizos department of Animal Reproduction National Center Institute for Agriculture and Food Research and Technology(CSIC-INIA)28040 MadridSpain. departamento de Medicina veterinaria Faculdade de Zootecnia e Engenharia de AlimentosUniversidade de Sao Paulo(FZEA-USP)PirassunungaBrazil. Facultad de Ciencias Agrarias y Ambientales Programa de Medicina VeterinariaFundacion Universitaria Juan de CastellanosTunjaColombia. Laboratorio de Biotecnologia de la Reproduccion Animal Facultad de Ciencias AgropecuariasUniversidad de Cuenca(UC)EC010205 CuencaEcuador. department of Anatomy and Embryology Veterinary Faculty-Universidad Complutense de Madrid(UCM)MadridSpain.

Background:In vitro production of bovine embryos is a well-established technology,but the in vitro culture(IVC)system still warrants improvements,especially regarding embryo *** study aimed to evaluate the effect of extracellular vesicles(EVs)isolated from oviductal(OF)and uterine fluid(UF)in sequential IVC on the development and quality of bovine *** were cultured in SOF supplemented with either BSA or EVs-depleted fetal calf serum(dFCS)in the presence(BSA-EV and dFCS-EV)or absence of EVs from OF(D1 to D4)and UF(D5 to D8),mimicking in vivo *** from oviducts(early luteal phase)and uterine horns(mid-luteal phase)from slaughtered heifers were isolated by size exclusion *** rate was recorded on days 7-8 and their quality was assessed based on lipid contents,mitochondrial activity and total cell numbers,as well as survival rate after *** mRNA abundance for lipid metabolism-related transcripts and levels of phosphorylated hormonesensitive lipase(pHSL)proteins were also ***,the expression levels of 383 miRNA in OF-and UF-EVs were assessed by ***:Blastocyst yield was lower(Pdecreased in dFCSEV(P0.05).Lipid metabolism transcripts were affected by EVs and showed interaction with type of protein source in medium(PPARGC1B,LDLR,CD36,FASN and PNPLA2,Pdevelopment but improves blast

关键词： Cattle Cryopreservation Embryo development Exosomes Lipid metabolism miRNAs Oviduct Uterus

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