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Browsing by Author "20216042108"
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Comparative evaluation of udder and body conformation traits of first lactation ¾ Holstein x ¼ Jersey versus Holstein cows = Comparación de las características de conformación de la ubre y el cuerpo de vacas de primera lactancia ¾ Holstein x ¼ Jersey versus Holstein
Bretschneider, Gustavo; Arias, Dario Raul; Cuatrin, Alejandra (Facultad de Ciencias Veterinarias, Universidad Austral de Chile, 2015)To facilitate the process of decision-making in selecting specific breeds for crossbreeding, this study aimed to determine the conformation traits of ¾ Holstein (HO) x ¼ Jersey (JE) crossbreds, relative to their pure HO ... -
Effect of ensiling a total mixed ration on feed quality for cattle in smallholder dairy farms = Efecto de ensilar una ración totalmente mezclada sobre la calidad nutritional para el ganado en pequeñas explotaciones lecheras
Bretschneider, Gustavo; Mattera, Juan; Cuatrin, Alejandra; Arias, Dario Raul; Wanzenried Zamora, Rosana Andrea (Facultad de Ciencias Veterinarias, Universidad Austral de Chile, 2015)The aim of this study was to assess the impact of ensiling a total mixed ration (TMR) on chemical composition, fermentation and sensory characteristics. Whole-plant corn (WPC) was ensiled alone, as a control, or in combination ... -
Effects of supplementation with increasing levels of energy concentrate on the productive response and ruminal digestion of dairy cows grazing lucerne pasture
Salado, Eloy Eduardo; Bretschneider, Gustavo; Cuatrin, Alejandra; Gagliostro, Gerardo Antonio (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) ... -
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
Bretschneider, Gustavo; Cuatrin, Alejandra; Arias, Dario Raul; Vottero, Dante Alberto (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 ... -
First report of a perforated abomasal ulcer in a beef heifer calf in Argentina
Perez Gaudio, Denisa; Perez, Flavio; Bretschneider, Gustavo (The Chamber of Veterinary Surgeons, Istanbul, 2020-12-13)Abomasal ulcers are local processes of autodigestion of the mucosa caused by the disturbance of the balance between protective and aggressive mechanisms at the abomasal mucosa. Several causes have been suggested and a ... -
Milk Yield and Composition and Pasture Ruminal Digestion in Grazing Dairy Cows Receiving Three Levels of Energy Concentrate Supplementation
Salado, Eloy Eduardo; Bretschneider, Gustavo; Cuatrin, Alejandra; Descalzo, Adriana Maria; Gagliostro, Gerardo Antonio (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 ... -
Productive response and reproductive performance of dairy cows subjected to different feeding systems
Salado, Eloy Eduardo; Maciel, Martin Guillermo; Bretschneider, Gustavo; Cuatrin, Alejandra; Gagliostro, Gerardo Antonio (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
Salado, Eloy Eduardo; Bretschneider, Gustavo; Cuatrin, Alejandra; Descalzo, Adriana Maria; Gagliostro, Gerardo Antonio (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) ... -
Productive response to two concentrate allocation strategies in dairy cows grazing with restricted pasture allowance
Bretschneider, Gustavo; Salado, Eloy Eduardo; Cuatrin, Alejandra; Mattera, Juan; Pece, Mariela Alejandra; Arias, Dario Raul; Cuffia, Maira; Dieguez, Virginia (2019-02)The objective of this study was to compare the effects of two concentrate allotment strategies on the performance of dairy cows grazing on restricted pasture and supplemented with conserved forage. Dairy cows fed equal ... -
Sistemas de alimentación combinando pastura y ración totalmente mezclada : respuesta productiva y comportamiento reproductivo de vacas lecheras
Salado, Eloy Eduardo; Maciel, Nicolás; Bretschneider, Gustavo; Cuatrin, Alejandra; Castignani, Horacio (EEA Rafaela, 2014)La competencia de la agricultura por el uso de la tierra y su consecuente aumento de valor ha generado interrogantes sobre la continuidad de los sistemas ganaderos con alternativas de dedicarse a la actividad agrícola, ...