Temas
Mostrando ítems 1-18 de 18
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Bienestar en vacas en el preparto durante el verano 2014 en el Departamento Castellanos. Estudio de caso
(2016)Durante el verano del 2014 se llevó a cabo un estudio de caso con el objetivo de evaluar algunas respuestas fisiológicas y conductuales preparto y productivas postparto, en vacas lecheras de alto merito genético ... -
Comportamiento ingestivo de agua en vacas lecheras (Datos preliminares)
(Facultad de Ciencias Agrarias, Universidad Nacional del Litoral, 2019)Durante el verano del 2018 se llevó a cabo un ensayo preliminar para determinar el comportamiento de bebida de vacas lecheras en el tambo robotizado del INTA Rafaela. En dicho ensayo se estimaron los índices de temperatura ... -
Differential immune response to two Staphylococcus aureus strains with distinct adaptation genotypes after experimental intramammary infection of dairy cows
(Elsevier, 2022-11)The aim of this study was to evaluate and compare the ability of two S. aureus strains with different adaptation genotypes (low and high) to the bovine mammary gland (MG) to establish an intramammary infection (IMI) and ... -
Effects of supplementation with increasing levels of energy concentrate on the productive response and ruminal digestion of dairy cows grazing lucerne pasture
(Scientific Research, 2018-11)The aim of the study was to determine the effect of three levels of energy concentrate intake on dry matter (DM) and energy intake, milk yield and composition, rumen environment and pasture neutral detergent fiber (NDF) ... -
Evaluación de indicadores metabólicos y bioquímicos sanguíneos en vacas en lactancia con Enfermedad Quística Ovárica = Evaluation of metabolic and biochemical blood parameters in lactating cows with Cystic Ovarian Disease
(Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, 2013)El objetivo de este trabajo fue determinar y evaluar indicadores bioquímicos sanguíneos asociados a procesos metabólicos energéticos, proteicos, minerales y de funcionalidad hepática, junto con parámetros productivos y ... -
Evaluación del bienestar en vacas en un sistema de ordeñe automatizado durante la época estival. Estudio de caso
(2017)Treinta y siete vaquillonas fueron alojadas en un corral con acceso a un tambo robotizado. Poseían sombras de red en el comedero y en los lugares de descanso. Desde las 18:00 hs hasta las 08:00 hs tenían acceso a una ... -
Gordura protegida na dieta de vacas de alta produção a campo, em alfafa verde ou pré-secada, na fase inicial da lactação. Parâmetros plasmáticos
(Sociedade Brasileira de Zootecnia, 2003)O trabalho foi desenvolvido na Estação Experimental Agropecuária do Instituto Nacional de Tecnologia Agropecuária (EEA-INTA, Rafaela) da Argentina. Foram utilizadas 32 vacas da raça Holando-Argentina, de alta produção ... -
High pasture allowance does not improve animal performancein supplemented dairy cows grazing alfalfa during autumn–winter
(2015)The aim of this study was to assess the effect of three alfalfa pasture herbage allowances on milk yield and composition during autumn–winter grazing season on early autumn calving dairy cows. Eighteen multiparous Holstein ... -
Identificación de factores de riesgos asociados a la presentación de endometritis en bovinos lecheros
(Facultad de Ciencias Veterinarias y Pecuarias, Universidad de Chile, 2014)El objetivo del presente trabajo fue identificar factores asociados a la presentación de endometritis en vacas lecheras posparto. Se muestrearon 152 vacas (aproximadamente con 40 días posparto) pertenecientes a cuatro ... -
Metabolic level recognition of progesterone in dairy Holstein cows using probabilistic models
(Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), 2014)Administration of exogenous progesterone is widely used in hormonal protocols for estrous (re)synchronization of dairy cattle without regarding pharmacological issues for dose calculation. This happens because it is difficult ... -
Milk Yield and Composition and Pasture Ruminal Digestion in Grazing Dairy Cows Receiving Three Levels of Energy Concentrate Supplementation
(2017-10)The objective of the experiment was to determine the effect of feeding three levels (T3.5, T7.0 and T10.5) of energy concentrate (3.5, 7.0 and 10.5 kg cow-1 day-1) on total dry matter (DM) and energy intakes, milk yield ... -
Mitigación del estrés calórico durante el preparto en vacas lecheras
(2016)Se utilizaron 30 vacas en preparto que se alojaron en un corral seco con acceso a sombra artifi cial durante el verano. Las vacas fueron distribuidas en dos grupos: sin refrescado (TS) y con refrescado (TR) en el sector ... -
Mitigación del estrés calórico en vacas lecheras en un clima subhúmedo
(2016)Para evaluar el efecto de la frecuencia de refrescados sobre la producción de leche y marcadores fi siológicos asociados al estrés calórico, durante enero y febrero de 2014, treinta vacas Holstein fueron encerradas desde ... -
Mycotoxin sequestering agent: Impact on health and performance of dairy cows and efficacy in reducing AFM1 residues in milk
(Elsevier, 2024-01)The objectives of this study were to evaluate the exposure to a diet naturally contaminated with mycotoxins on lactation performance, animal health, and the ability to sequester agents (SA) to reduce the human exposure to ... -
Productive response and reproductive performance of dairy cows subjected to different feeding systems
(Scientific Research Publishing, 2020-01)Fifty Holstein cows (2.6 ± 1.0 lactations) in early lactation (52.6 ± 16.4 days in milk) calved in autumn and producing 34.3 (±4.4) kg milk per cow∙day−1 were randomly assigned for 27 weeks to one of two treatments (feeding ... -
Productive Response of Dairy Cows Fed with Different Levels of Totally Mixed Ration and Pasture
(2018-07)Forty multiparous Holstein cows in early lactation (66 ± 19 days) were assigned to one of four treatments that consisted in different ratios of total mixed rations (TMR) and pasture at 100% TMR (T0), 75:25 (T1) 50:50 (T2) ... -
Risk factors of S. aureus intramammary infection in pre partum dairy heifers under grazing conditions and molecular characterization of isolates from heifers and cows
(Cambridge University Press, 2020-02)The aims of the research reported here were to identify potential risk factors associated with the presence of Staphylococcus aureus intramammary infection (IMI) in pre partum dairy heifers on 17 dairy farms from three ... -
The association between mastitis and reproductive performance in seasonally-calved dairy cows managed on a pasture-based system = Asociación entre la mastitis y el desempeño reproductivo en rodeos lecheros Holstein de base pastoril y servicios estacionados
(2014)The objective of this study was to assess association between clinical, subclinical mastitis, body condition score and the reproductive performance of cows under seasonally calving conditions in a pasture-based management ...