LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 486

Search options

  1. Article ; Online: Climatic and calf-related risk factors associated with failure of transfer of passive immunity in Holstein calves in a hot environment.

    Mellado, M / Arroyo, N / García, J E / Arias, N / Macías-Cruz, U / Mellado, J

    Tropical animal health and production

    2024  Volume 56, Issue 2, Page(s) 57

    Abstract: This retrospective observational study aimed to assess the effect of temperature-humidity index (THI) at calving and in the last trimester of pregnancy and calve-related factors affecting passive transfer of maternal immunoglobulin using Brix ... ...

    Abstract This retrospective observational study aimed to assess the effect of temperature-humidity index (THI) at calving and in the last trimester of pregnancy and calve-related factors affecting passive transfer of maternal immunoglobulin using Brix refractometry in Holstein calves. Blood samples from 4411 Holstein calves from a single large dairy farm in spring 2022 were used. A subset of data containing 6318 calvings was used to determine the effect of climatic conditions on the occurrence of agammaglobulinemia. Risk factors predictive of failure of passive transfer (FPT) were calculated using multiple logistic models. Females were 1.4 times more likely not to have FPT (56%; Brix% > 8 equivalent to ≥ 10 g/L IgG) than males (47.2%). Calves born as singles increased the likelihood of not presenting FPT (52.6%) than calves born as twins (42.9%). Calves from cows with no dystocic delivery had a lower risk for FPT (odds ratio = 2.3) than calves from cows with dystocia. Agammaglobulinemia was 1.5 and 1.8 times more likely to occur in calves with THI ≥ 80 and ≥ 82 in the last trimester of gestation and at calving, respectively, than in calves not experiencing heat stress. Agammaglobulinemia was twice as likely to occur in male than in female calves. Calves with birth weight ≥ 37 kg and gestation length ≥ 275 kg were less likely to present agammaglobulinemia than lighter calves and calves with shorter gestation periods. This study raises questions for management practices in Holstein calves undergoing in utero heat stress and around calving to avoid agammaglobulinemia.
    MeSH term(s) Animals ; Cattle ; Female ; Male ; Pregnancy ; Agammaglobulinemia/veterinary ; Antibodies ; Birth Weight ; Cattle Diseases ; Dystocia/veterinary ; Risk Factors ; Retrospective Studies
    Chemical Substances Antibodies
    Language English
    Publishing date 2024-01-24
    Publishing country United States
    Document type Journal Article ; Observational Study, Veterinary
    ZDB-ID 603363-5
    ISSN 1573-7438 ; 0049-4747
    ISSN (online) 1573-7438
    ISSN 0049-4747
    DOI 10.1007/s11250-024-03900-8
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article: Seasonal prevalence of gastrointestinal parasites in desert bighorn sheep (Ovis canadensis) in northern Mexico

    García, J.E. / Rodriguez-Huerta, F.A. / Lozano, E.A. / Encina, J. / Mellado, M.

    Journal of helminthology. , v. 96

    2022  

    Abstract: This study aimed to describe the shedding pattern of gastrointestinal parasite eggs by a wild population of desert bighorn sheep (DBS; Ovis canadensis) in northern Mexico. Seventy-five fresh faecal samples were collected from the ground in each season ... ...

    Abstract This study aimed to describe the shedding pattern of gastrointestinal parasite eggs by a wild population of desert bighorn sheep (DBS; Ovis canadensis) in northern Mexico. Seventy-five fresh faecal samples were collected from the ground in each season within an hour after being expelled by these animals. The generalized linear mixed model showed that eggs per gram of faeces were highest in winter (577 ± 399) and lowest in summer (260 ± 198). Generalized linear models revealed that Strongyloides spp. predominated during most seasons with a peak in summer (85% of faecal samples analysed) and the absence of this helminth in winter. Nematodirus spp. was another helminth present in three seasons, with the presence of this nematode in 35% of the faecal samples in spring and 0% in summer. Other parasites in DBS faeces included Bunostomun spp., Trichostrongylus spp., Cooperia spp., Mecistocirrus digitatus, Haemonchus contortus, Chabertia ovina and Eimeria ovinoidalis. There were differences among seasons in the percentage of these helminths and coccidia in faecal samples for all these parasites. It was concluded that helminths egg output in DBS in a semi-arid rangeland is lowest in summer and spring and highest in autumn and winter. Furthermore, it was shown that DBS in the study site do not suffer from severe parasite burden. Therefore, this nematode parasite burden is compatible with the conservation and well-being of this particular population.
    Keywords Chabertia ; Cooperia ; Eimeria ; Haemonchus contortus ; Nematodirus ; Ovis canadensis ; Strongyloides ; Trichostrongylus ; autumn ; eggs ; feces ; gastrointestinal parasites ; gastrointestinal system ; helminths ; rangelands ; spring ; summer ; winter ; Mexico
    Language English
    Publishing place Cambridge University Press
    Document type Article
    ZDB-ID 390188-9
    ISSN 1475-2697 ; 0022-149X
    ISSN (online) 1475-2697
    ISSN 0022-149X
    DOI 10.1017/S0022149X22000207
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  3. Article ; Online: Flower colour and size signals differ depending on geographical location and altitude region.

    Garcia, J E / Dyer, A G / Burd, M / Shrestha, M

    Plant biology (Stuttgart, Germany)

    2021  Volume 23, Issue 6, Page(s) 905–914

    Abstract: Bees are major pollinators of angiosperms and have phylogenetically conserved colour vision but differ in how various key species use achromatic information that is vital for both flower detection and size processing. We modelled green contrast and ... ...

    Abstract Bees are major pollinators of angiosperms and have phylogenetically conserved colour vision but differ in how various key species use achromatic information that is vital for both flower detection and size processing. We modelled green contrast and colour contrast signals from flowers of different countries where there are well established differences in availability of model bee species along altitudinal gradients. We tested for consistency in visual signals as expected from generalization in pollination principles using phylogenetically informed linear models. Patterns of chromatic contrast, achromatic green contrast and flower size differed among the three floras we examined. In Nepal there is a significant positive correlation between flower size and colour contrast in the subalpine region, but a negative correlation at the lower altitudes. At high elevations in Norway, where pollinators other than bees are common, flower size was positively correlated with colour contrast. At low and medium altitudes in Norway and in Australia, we did not observe a significant relationship between size and colour contrast. We thus find that the relationship between size, green and colour contrast cannot be generalized across communities, thus suggesting that flower visual signal adaptations to local pollinators are not limited to chromatic contrast.
    MeSH term(s) Altitude ; Animals ; Bees ; Color ; Flowers ; Magnoliopsida ; Pollination
    Language English
    Publishing date 2021-09-21
    Publishing country England
    Document type Journal Article
    ZDB-ID 1464075-2
    ISSN 1438-8677 ; 1435-8603
    ISSN (online) 1438-8677
    ISSN 1435-8603
    DOI 10.1111/plb.13326
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: RedLabRA; a Spanish Network of Microbiology Laboratories for the Surveillance of Antibiotic Resistant Microorganisms.

    Cañada-García, J E / Pérez-Vázquez, M / Oteo-Iglesias, J

    Revista espanola de quimioterapia : publicacion oficial de la Sociedad Espanola de Quimioterapia

    2021  Volume 34 Suppl 1, Page(s) 12–14

    Abstract: There is an urgent need to control the clinical and public health impact that antibiotic resistance (AR) causes worldwide. Any measure for its control must be based on an up-to-date and comprehensive knowledge of the situation. However, it is difficult ... ...

    Abstract There is an urgent need to control the clinical and public health impact that antibiotic resistance (AR) causes worldwide. Any measure for its control must be based on an up-to-date and comprehensive knowledge of the situation. However, it is difficult to determine the current dimension of AR because a large part of the available information is based on heterogeneous, insufficiently unified and retrospective data. The integration of genomic information in the surveillance of AR is another important factor for improvement. The Spanish Network of Laboratories for the Surveillance of Resistant Microorganisms (RedLabRA) is a structured network of interconnected microbiology laboratories developed within the Spanish National Plan against Antibiotic Resistance. Its main objective is to support the diagnosis of resistance to antibiotics, integrating molecular characterization in the surveillance.
    MeSH term(s) Anti-Bacterial Agents/pharmacology ; Anti-Bacterial Agents/therapeutic use ; Drug Resistance, Microbial ; Humans ; Laboratories ; Public Health ; Retrospective Studies
    Chemical Substances Anti-Bacterial Agents
    Language English
    Publishing date 2021-09-30
    Publishing country Spain
    Document type Journal Article ; Review
    ZDB-ID 1018135-0
    ISSN 1988-9518 ; 0214-3429
    ISSN (online) 1988-9518
    ISSN 0214-3429
    DOI 10.37201/req/s01.03.2021
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Seasonal prevalence of gastrointestinal parasites in desert bighorn sheep (

    García, J E / Rodriguez-Huerta, F A / Lozano, E A / Encina, J / Mellado, M

    Journal of helminthology

    2022  Volume 96, Page(s) e26

    Abstract: This study aimed to describe the shedding pattern of gastrointestinal parasite eggs by a wild population of desert bighorn sheep (DBS; Ovis canadensis) in northern Mexico. Seventy-five fresh faecal samples were collected from the ground in each season ... ...

    Abstract This study aimed to describe the shedding pattern of gastrointestinal parasite eggs by a wild population of desert bighorn sheep (DBS; Ovis canadensis) in northern Mexico. Seventy-five fresh faecal samples were collected from the ground in each season within an hour after being expelled by these animals. The generalized linear mixed model showed that eggs per gram of faeces were highest in winter (577 ± 399) and lowest in summer (260 ± 198). Generalized linear models revealed that Strongyloides spp. predominated during most seasons with a peak in summer (85% of faecal samples analysed) and the absence of this helminth in winter. Nematodirus spp. was another helminth present in three seasons, with the presence of this nematode in 35% of the faecal samples in spring and 0% in summer. Other parasites in DBS faeces included Bunostomun spp., Trichostrongylus spp., Cooperia spp., Mecistocirrus digitatus, Haemonchus contortus, Chabertia ovina and Eimeria ovinoidalis. There were differences among seasons in the percentage of these helminths and coccidia in faecal samples for all these parasites. It was concluded that helminths egg output in DBS in a semi-arid rangeland is lowest in summer and spring and highest in autumn and winter. Furthermore, it was shown that DBS in the study site do not suffer from severe parasite burden. Therefore, this nematode parasite burden is compatible with the conservation and well-being of this particular population.
    MeSH term(s) Animals ; Feces/parasitology ; Helminths ; Intestinal Diseases, Parasitic/epidemiology ; Intestinal Diseases, Parasitic/parasitology ; Intestinal Diseases, Parasitic/veterinary ; Mexico/epidemiology ; Nematoda ; Nematode Infections/parasitology ; Parasite Egg Count ; Parasites ; Prevalence ; Seasons ; Sheep ; Sheep Diseases/epidemiology ; Sheep Diseases/parasitology ; Sheep, Bighorn
    Language English
    Publishing date 2022-04-11
    Publishing country England
    Document type Journal Article
    ZDB-ID 390188-9
    ISSN 1475-2697 ; 0022-149X
    ISSN (online) 1475-2697
    ISSN 0022-149X
    DOI 10.1017/S0022149X22000207
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Book ; Online: Mejoramiento del frijol común por resistencia a Empoasca kraemeri

    García, J.E.

    2016  

    Keywords phaseolus vulgaris ; empoasca kraemeri ; plant breeding ; pest resistance ; genetic resistance ; fitomejoramiento ; resistencia a las plagas ; resistencia genética
    Language Spanish
    Publishing date 2016-02-29T17:09:55Z
    Publisher International Center for Tropical Agriculture
    Publishing country fr
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  7. Article ; Online: Prospective study of the modified Atkins diet in adult drug-resistant epilepsy: effectiveness, tolerability, and adherence.

    Alanis Guevara, M I / García de Alba García, J E / López Alanis, A L / González Ojeda, A / Fuentes Orozco, C

    Neurologia

    2023  

    Abstract: Introduction: Drug-resistant epilepsy presents high worldwide prevalence and is difficult to control despite the wide variety of available antiepileptic drugs (AED). The modified Atkins diet (MAD) is an additional treatment alternative. Several studies ... ...

    Abstract Introduction: Drug-resistant epilepsy presents high worldwide prevalence and is difficult to control despite the wide variety of available antiepileptic drugs (AED). The modified Atkins diet (MAD) is an additional treatment alternative. Several studies have addressed the use of the ketogenic diet and MAD in children with drug-resistant epilepsy, but insufficient research has been conducted into adults with the same condition.
    Objective: To evaluate the effectiveness and tolerability of, and adherence to, the MAD in adults with drug-resistant epilepsy.
    Material and methods: We conducted a 6-month pre-post prospective study at a reference hospital. Patients were prescribed the MAD with limited carbohydrate intake and unlimited fat intake. We conducted clinical and electroencephalographic follow-up according to the relevant guidelines, and assessed adverse effects changes in laboratory findings, and adherence.
    Results: Thirty-two patients with drug-resistant epilepsy were included in the study. Patients' mean age was 30 years, mean disease progression time was 22 years, and all patients had focal or multifocal epilepsy. Thirty-four percent of patients presented > 50% decreases in overall seizure frequency (P =  .001); seizure control was greater in the first month and subsequently declined. These patients presented weight loss (RR: 7.2; 95% CI, 1.3-39.5; P = .02), good to fair adherence only in the first and third months (RR: 9.4; 95% CI, 0.9-93.6; P = .04 and RR: 0.4; 95% CI, 0.30-0.69; P = .02, respectively). Tolerability data showed that the MAD is safe: adverse effects were minor and short-lived in most cases, with the exception of mild to moderate hyperlipidaemia in one-third of patients. The adherence rate was 50% at the end of the study.
    Conclusions: In adults with drug-resistant focal epilepsy, the MAD showed adequate tolerability and moderate but decreasing effectiveness and adherence, probably due to a preference for a carbohydrate-based diet.
    Language English
    Publishing date 2023-04-28
    Publishing country Spain
    Document type Journal Article
    ZDB-ID 2654369-2
    ISSN 2173-5808 ; 2173-5808
    ISSN (online) 2173-5808
    ISSN 2173-5808
    DOI 10.1016/j.nrleng.2021.10.008
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Phenogenetic profile and agronomic contribution of Azospirillum argentinense Az39

    Maroniche, G A / Puente, M L / García, J E / Mongiardini, E / Coniglio, A / Nievas, S / Labarthe, M M / Wisniewski-Dyé, F / Rodriguez Cáceres, E / Díaz-Zorita, M / Cassán, F

    Microbiological research

    2024  Volume 283, Page(s) 127650

    Abstract: Azospirillum sp. is a plant growth-promoting rhizobacteria largely recognized for its potential to increase the yield of different important crops. In this work, we present a thorough genomic and phenotypic analysis of A. argentinense ... ...

    Abstract Azospirillum sp. is a plant growth-promoting rhizobacteria largely recognized for its potential to increase the yield of different important crops. In this work, we present a thorough genomic and phenotypic analysis of A. argentinense Az39
    MeSH term(s) Azospirillum/physiology ; Indoleacetic Acids/metabolism ; Plant Development ; Carbon ; South America
    Chemical Substances Indoleacetic Acids ; Carbon (7440-44-0)
    Language English
    Publishing date 2024-02-15
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1189614-0
    ISSN 1618-0623 ; 0944-5013
    ISSN (online) 1618-0623
    ISSN 0944-5013
    DOI 10.1016/j.micres.2024.127650
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Effect of co-positivity for brucellosis and tuberculosis on milk yield and fertility of Holstein cows.

    Mellado, M / Treviño, N / Véliz, F G / Macías-Cruz, U / Avendaño-Reyes, L / de Santiago, A / García, J E

    Tropical animal health and production

    2021  Volume 53, Issue 5, Page(s) 504

    Abstract: This study aimed to determine whether cows detected as tuberculosis (bTB) reactors and seropositive to brucellosis (bBR), as well as co-positive to bBR and bTB (bBR-bTB) and with a complete lactation before slaughter, were associated with reduced milk ... ...

    Abstract This study aimed to determine whether cows detected as tuberculosis (bTB) reactors and seropositive to brucellosis (bBR), as well as co-positive to bBR and bTB (bBR-bTB) and with a complete lactation before slaughter, were associated with reduced milk production and fertility. A total of 8068 productive and reproductive records of high-yielding Holstein cows from a single large dairy herd with a high prevalence of bTB and bBR were collected from 2012 to 2015. Lactation derived either from calving (n = 6019) or hormonally induced lactation (n = 2049), and all cows received growth hormone throughout lactation. For cows not induced into lactation, pregnancy rate to first service for healthy cows (C; 26.6%) was higher (P < 0.01) than bBR (15.2%), bTB (15.8%), and bBR-bTB (1.3%) cows. For induced cows, pregnancy rate to first service did not differ significantly among C, bBR, and bTB (14.5-17.3%) cows, but the percentage success of first service was extremely low (1.3%; P < 0.01) in bBR-bTB cows. Services per pregnancy (only pregnant cows) were lowest for C (3.3 ± 2.9; P < 0.01) and highest (6.4 ± 3.4) for bBR-bTB non-induced cows. This variable was lowest for C (2.9 ± 2.5; P < 0.01) and highest for bBR-bTB non-induced cows (6.3 ± 3.1). Pregnancy rate to all services did not differed for C (79.5%), bBR (76.7%), and bTB (75.9%) but was lower (58.9%; P < 0.01) for bBR-bTB non-induced cows. For induced cows this variable was highest for bBR (53.3%) and lowest for bBR-bTB (34.1%; P < 0.01) non-induced cows. 305-d milk production was increased by 4%, and total milk yield by 7% in TB-positive cows compared to that of the negative cows non-induced hormonally into lactation. This study showed the negative impact of the co-positivity for bTB and bBR on the reproductive efficiency of Holstein cows, although positive bTB and bBR tests enhanced milk yield.
    MeSH term(s) Animals ; Brucellosis, Bovine/diagnosis ; Cattle ; Cattle Diseases/diagnosis ; Female ; Fertility ; Lactation ; Milk ; Pregnancy ; Tuberculosis, Bovine/diagnosis
    Language English
    Publishing date 2021-10-07
    Publishing country United States
    Document type Journal Article
    ZDB-ID 603363-5
    ISSN 1573-7438 ; 0049-4747
    ISSN (online) 1573-7438
    ISSN 0049-4747
    DOI 10.1007/s11250-021-02952-4
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Localization and survival of Azospirillum brasilense Az39 in soybean leaves.

    Puente, M L / Maroniche, G A / Panepucci, M / Sabio Y García, J / García, J E / Criado, M V / Molina, R / Cassán, F

    Letters in applied microbiology

    2021  Volume 72, Issue 5, Page(s) 626–633

    Abstract: In recent years, foliar inoculation has gained acceptance among the available methods to deliver plant beneficial micro-organisms to crops under field conditions. Colonization efficiency by such micro-organisms largely depends on their ability to survive ...

    Abstract In recent years, foliar inoculation has gained acceptance among the available methods to deliver plant beneficial micro-organisms to crops under field conditions. Colonization efficiency by such micro-organisms largely depends on their ability to survive when applied on the leaves. In this work, we evaluated the survival and localization of Azospirillum brasilense Az39 (Az39) in excised soybean leaves. Scanning electron microscopy and confocal laser scanning microscopy of a red fluorescent-transformed variant of Az39 were used to determine bacterial localization, while the most probable number and plate count methods were applied for bacterial quantification. Microscopic observations indicated a decrease in the number of Az39 cells on the leaf surface at 24 h after treatment, whereas midribs and cell-cell junctions of the inner leaf epidermis became highly populated zones. The presence of Az39 inside xylem vessels was corroborated at 6 h after bacterization. Az39 population did not significantly decrease throughout 24 h. We could visualize Az39 cells on the surface and in internal tissues of soybean leaves and recover them through culture methodologies. These results evidence the survival capacity of Az39 on and inside leaves and suggest a previously unnoticed endophytic potential for this well-known plant growth-promoting rhizobacteria strain.
    MeSH term(s) Azospirillum brasilense/growth & development ; Microscopy, Confocal ; Microscopy, Electron, Scanning ; Plant Leaves/microbiology ; Plant Roots/microbiology ; Glycine max/microbiology
    Language English
    Publishing date 2021-02-19
    Publishing country England
    Document type Journal Article
    ZDB-ID 632584-1
    ISSN 1472-765X ; 0266-8254
    ISSN (online) 1472-765X
    ISSN 0266-8254
    DOI 10.1111/lam.13444
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top