Consulta: creatorFacets:"Vargas-Bello-Pérez,Einar"
Registros recuperados: 7
Data/hora: 01/06/2024 01:12:21

Predicted milk production per hectare based on yield and chemical composition of native and hybrid maize silage varieties on temperate and tropical regions
Provedor de dados: 109
Autores: Robles Jiménez,Lizbeth Esmeralda; González Ronquillo,Manuel; Rosas Davila,Melchor; Osorio Avalos,Jorge; Palacios Riocerezo,Carlos; Castelán Ortega,Octavio Alonso; Chay-Canul,Alfonso; Vargas-Bello-Pérez,Einar; Plata Reyes,Dalia A.
Abstract The objective of the present study was to characterize maize silage according to chemical composition, maize silage yield, as well as their predicted milk production. A search was made on studies related to maize silage yield, density, chemical composition (DM, CP, NDF, starch), and dry matter digestibility (DMD). In this study, 41 maize varieties from temperate regions and 101 maize varieties from tropical origin were analyzed. The net energy of lactation (NEL Mcal/kg DM), kilograms of milk per t of silage (kg of milk/t DM), and kilograms of milk per hectare of silage (kg of milk/ha) were determined. A cluster (CL) analysis was performed, and six CL of maize silage were obtained. The CL1 included digestibility for dry matter, crude protein,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Production systems; Dairy; Cows; Starch; Fiber; Conserved forage.
Ano: 2021
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122021000200148

Influence of a spray-dried fat enriched with EPA and DHA on the fatty acid composition of sow milk
Provedor de dados: 118
Autores: Grez,Mariola; Gandarillas,Mónica; González,Fernando; Vargas-Bello-Pérez,Einar.
Supplementation with eicosapentaenoic and docosahexaenoic acids (EPA and DHA) through the addition of fish oils to mammal diets during lactation benefits milk production, litter growth and the litter immune system, but there is little evidence supporting the use of oils that have been dried using a spray-drying method designed to cool and crystalize fat particles. The objective of this study was to evaluate the effect of a spray-dried dietary fat enriched with EPA and DHA on the fatty acid composition of sow milk. Fifteen pregnant sows were assigned to three dietary treatments from day 100 of gestation until weaning (day 28). Control sows (CONT) were fed an unsupplemented basal diet, and supplemented sows were fed the basal diet plus 20 g (FOPF20) or 40 g...
Tipo: Journal article
Palavras-chave: Fatty acids; Milk; Powdered fat; Sow; Spray-dry.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202016000300001

Development of insulin resistance in horses (Equus caballus): etiologic and molecular aspects
Provedor de dados: 118
Autores: Gandarillas,Monica; Matus,José Tomás; Márquez-Hernández,Roberto I; Vargas-Bello-Pérez,Einar.
In horses, insulin resistance is associated with several comorbidities such as obesity, laminitis, colic and osteochondrosis. The multifactorial causes of insulin resistance in horses have been addressed, which include genetic and environmental factors. As a consequence of these factors, the cellular signaling pathways responsible for insulin synthesis, the glucose intake in target cells of peripheral tissues and other related processes (e.g., adipocytokine signaling pathways) are affected. In response to insulin, changes in gene expression occur, which are required for the integration of an entire network of metabolic and physiological responses in different organs. The peroxisome proliferator-activated receptors (PPARs) were the particular focus of...
Tipo: Journal article
Palavras-chave: Equine nutrition; Insulin resistance; PPAR-gamma.
Ano: 2015
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202015000200001

Effect of genus and growth stage on the chemical and mineral composition of tropical grasses used to feed dairy cows
Provedor de dados: 118
Autores: Arzate-Vázquez,Gerardo L; Castrejón-Pineda,Francisco A; Rosiles-Martínez,René; Carrillo-Pita,Silvino; Angeles-Campos,Sergio; Vargas-Bello-Pérez,Einar.
G.L. Arzate-Vázquez, F.A. Castrejón-Pineda, R. Rosiles-Martínez, S. Carrillo-Pita, S. Angeles-Campos, and E. Vargas-Bello-Pérez. 2016. Effect of genus and growth stage on the chemical and mineral composition of tropical grasses used to feed dairy cows. Cien. Inv. Agr. 43(3): 476-485. In tropical production systems, dairy cows are rarely supplemented with minerals, which often lead to mineral imbalances. Grasses grown together in the same soil type and sampled at the same growth stage can vary widely in chemical and mineral composition; therefore, the objective of this study was to characterize the chemical and mineral composition of Urochloa spp., Megathyrsus spp., and Andropogon spp. at three different stages of growth in the same soil type. The content...
Tipo: Journal article
Palavras-chave: Cows; Forage; Nutritive value; Ruminants; Trace minerals.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202016000300013

Trans fatty acids and their role in the milk of dairy cows
Provedor de dados: 118
Autores: Vargas-Bello-Pérez,Einar; Garnsworthy,Phil C.
E. Vargas-Bello-Pérez, and P.C. Garnsworthy. 2013. Trans fatty acids and their role in the milk of dairy cows. Cien. Inv. Agr. 40(3): 449-473. Lipids obtained from dairy products are an important part of the human diet in many countries. Approximately 75% of the total consumption of fat from ruminant animals comes from bovine milk fat. Trans fatty acids (tFA) are produced during biohydrogenation of mono- and poly-unsaturated FA in the rumen. They are mixtures of positional and geometrical isomers that are incorporated into the milk fat of lactating cows. The most important sources of tFA in the human diet are partially hydrogenated vegetable oils and ruminant milk and meat products. Ruminant-derived lipids often contain 1-8% of total fatty acids as tFA,...
Tipo: Journal article
Palavras-chave: Biohydrogenation; Dairy cows; Milk; Ruminal fermentation; Trans fatty acids.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000300001

Feeding extruded linseed to dairy ewes under extensive grazing conditions
Provedor de dados: 118
Autores: Vargas-Bello-Pérez,Einar; Vera,Raúl R; Aguilar,Claudio; Lira,Rodrigo; Peña,Iván; Tello,Franco. A.
The aim of this trial was to evaluate the effect of dietary supplementation of extruded linseed on the milk and cheese fatty acid (FA) profiles of ewes under extensive grazing conditions. Over 26 days, a group of nine lactating ewes (Latxa × Milchschaf × Corriedale) in mid-lactation were managed under grazing conditions and given supplements during each manual milking (0830 and 1800 h) of 50% corn and 50% oats (500 g ewe-1 milking-1; control, TC) for the first 6 days. From day 7 to 20, the supplement was 25% corn, 25% oats and 50% extruded linseed (500 g ewe-1 milking-1) (extruded linseed; TEL). From day 21 to 26, the ewes were fed TC. The saturated FA content in milk was reduced (3.6%), and the monounsaturated, polyunsaturated and n-3 FA (7, 10 and 25%,...
Tipo: Journal article
Palavras-chave: Extruded linseed; N-3 fatty acids; Cheese; Ewe; Milk.
Ano: 2014
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202014000100011

Characterization of cheese consumers in Santiago Province, Chile
Provedor de dados: 118
Autores: Vargas-Bello-Pérez,Einar; Aguilar,Claudio; Toro-Mujica,Paula; Vera,Raúl R; Cerda,Matías; Briones,Ignacio.
A high demand for Chilean cheese has resulted in increased cheese production. This increase represents an opportunity to promote the development of new markets, such as for small ruminant cheeses. However, little has been discussed regarding the extent to which cheese consumers consider small ruminant cheeses. We hypothesized that price is the main determining factor for purchasing cheese. The present study examined this previously unexplored aspect. The objective of this study was to identify the factors that contribute to the purchaser's response behavior, including purchase, usage and product possession. This study also aimed to provide preliminary information on cheese consumption in the Province of Santiago, Chile. A personal interview was conducted...
Tipo: Journal article
Palavras-chave: Cheese; Consumption; Small ruminant.
Ano: 2014
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202014000300005