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Mostrando ítems 1-20 de 24
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Age at First Gestation in Beef Heifers Affects Fetal and Postnatal Growth, Glucose Metabolism and IGF1 Concentration
(MDPI, 2021-11)This study aimed to determine the effects of age at first gestation on offspring growth performance, glucose metabolism, and IGF1 concentration. Heifers impregnated by AI from a single bull at 15 months of age (15 M, n = ... -
Delayed-type hypersensitivity skin test against Neospora caninum in heifers with undetectable specific antibodies
(Elsevier, 2020-07-19)Delayed-type hypersensitivity (DTH) has been used in human and veterinary medicine as a skin testing for evaluating in vivocell-mediated immune responses (CMIR). Whereas CMIR is a key process to control intracellular ... -
Effect of Bovine Viral Diarrhea Virus on the ovarian functionality and in vitro reproductive performance of persistently infected heifers
(Elsevier, 2013-08-30)The aim of this study was to study the effect of Bovine Viral Diarrhea Virus on the reproductive female tract by means of analyzing the ovarian follicular population of persistently infected (PI) heifers, and evaluating ... -
Efficacy of immunization with a recombinant S. aureus vaccine formulated with liposomes and ODN-CpG against natural S. aureus intramammary infections in heifers and cows
(Elsevier, 2022-07)The aims of the present study were to evaluate the ability of a subunit vaccine composed of recombinant molecules of α-toxin, β-toxin, FnBPA and ClfA, formulated with cationic liposomes and CpG-ODN, to confer protection ... -
Encierres a corral recomendaciones y ejemplos
(EEA Valle Inferior, INTA, 2011-08-05)La composición y disponibilidad de forraje de un pastizal natural depende de factores externos, como el clima e internos, relacionados con el manejo, rotación de potreros y ajuste de carga. La baja disponibilidad de forraje ... -
Estimation of body weight by an indirect measurement method in developing replacement Holstein heifers raised on pasture = Estimación del peso corporal mediante un método indirecto en vaquillonas Holstein de reposición criadas sobre pasturas
(Facultad de Ciencias Veterinarias, Universidad Austral de Chile, 2014)Scale is the most accurate means of measuring the actual body weight (BW) in developing heifers. However, when it is not available, indirect tools to estimate BW are needed. The objective of this study was to evaluate the ... -
Evaluación de la suplementación con granos de destilería en alimentación a pasto sobre el perfil de ácidos grasos de carne proveniente de vaquillonas
(Asociación Argentina de Tecnólogos Alimentarios (AATA), 2023-10)The objective of this work was to evaluate the effect of grass supplementation with distillers grains (DG) on the fatty acid (FA) profile of meat from heifers. GD are the byproduct of bioethanol fermentation and retain the ... -
Evaluation of the humoral immune response to a multicomponent recombinant vaccine against S. aureus in healthy pregnant heifers
(2018-05)Staphylococcus aureus is a worldwide pathogen that causes mastitis in dairy herds. Shortcomings in control programs have encouraged the development of vaccines against this pathogen. This study evaluated the vaccine candidate ... -
Evaluation of Tritrichomonas foetus infection clearance in heifers immunized with a single intravaginal dose of formaldehyde fixed strain B1 cells
(Elsevier, 2018-05-15)Vaccines against Tritrichomonas foetus have been shown to reduce the time of infection after natural or experimental exposure. The object of this study was to assess the protection against T. foetus infection conferred by ... -
Follicular wave dynamics and Growth factors gene expression in Braford heifers
(Wiley, 2020-06)The objectives of the present study were (experiment 1) to characterized development and dynamics of the dominant follicles (DF) and the corpus luteum (CL) to determine patterns of two (W2) and three (W3) follicular waves ... -
Functional role of antibodies generated in heifers through immunization with Staphylococcus aureus vaccines in invasion and phagocytosis assays
(2014-11)A successful Staphylococcus aureus vaccine should elicit a long-term antibody response that prevents establishment of the infection. The aim of the present study was to evaluate the functional role of antibodies raised ... -
Heifer management characterization in dairy herds from the west of Buenos Aires, Argentina = Caracterização da gestão de novilhas em rebanhos leiteiros do oeste de Buenos Aires, Argentina
(School of Veterinary Medicine and Animal Science, University of São Paulo, 2021-09)The replacement program in a dairy farm represents the second or third largest cost in a dairy operation. This study aimed to characterize and typify the practices related to the dairy heifer replacement program and describe ... -
Immune response and functional role of antibodies raised in heifers against a Staphylococcus aureus CP5 lysate and recombinant antigens vaccine formulated with Iscom Matrix adjuvant
(2014-12-15)Staphylococcus aureus is the most frequently isolated pathogen from bovine intramammary infections worldwide. Commercially available vaccines for mastitis control are composed either of S. aureus lysates or inactivated ... -
Immune response and protection provided by live tachyzoites and native antigens from the NC-6 Argentina strain of Neospora caninum in pregnant heifers
(Elsevier, 2013-11)The aim of the present study was to compare the immunogenicity and protective efficacy of live tachyzoites and native antigen extract obtained from the NC-6 Argentina strain against vertical transmission of Neospora caninum, ... -
Immune response of heifers against a Staphylococcus aureus CP5 whole cell and lysate vaccine formulated with ISCOM Matrix adjuvant
(2014-02)Staphylococcus aureus is the most frequently isolated pathogen from bovine intramammary infections worldwide. Commercially available vaccines for mastitis control are composed either of S. aureus lysates or whole-cells ... -
Immune response of heifers against a Staphylococcus aureus CP5 whole cell vaccine formulated with ISCOMATRIX™ adjuvant
(2013-02)The shortcomings of Staphylococcus aureus vaccines to control bovine mastitis have been attributed to insufficient capacity of the vaccines to induce opsonizing antibodies and to stimulate cellular immune responses. Types ... -
Immunization with inactivated antigens of Neospora caninum induces tolllike receptors 3, 7, 8 and 9 in maternal-fetal interface of infected pregnant heifers
(2017)Neospora caninum is an obligate parasite and a major cause of abortion in cattle. Pregnancy failures appear to be associated with weak innate defences on the maternal-fetal interface during infection with N. caninum. Herein, ... -
Infection with different Neospora caninum strains causes differences in the glycosylation pattern in the uteri and placentae of Neospora caninum-infected heifers
(Elsevier, 2024-04)Neospora caninum is an obligate intracellular parasite that causes abortion in ruminants. Different strains produce differences in the severity of disease outcomes. These differences may cause physiological or pathological ... -
Osteosarcoma in the Skull of a Holstein Heifer
(Brazilian Association of Veterinary Pathology, 2014-12-22)A-2-year-old heifer showed a mass on the frontal part of the skull. Cytological analysis displayed pleomorphic, polyedric and fusiform cells with extracellular hyaline material. Histologically, the excised mass showed ... -
Pregnancy rate to FTAI in Braford heifers submitted to J-Synch protocol
(Departamento de Medicina Veterinária da Universidade Federal Rural de Pernambuco, 2020-11)The objective of the present work was to evaluate the effect of J-Synch protocol on pregnancy rate (PR) of heifers artificially inseminated after detected estrus (DEAI) or at fixed-time (FTAI). Two hundred ninety-three ...