Results 41 to 50 of about 3,603 (208)

First Report of Anthelmintic Resistance in Gastrointestinal Nematodes of Sheep from Costa Rica

Veterinary Medicine International, Volume 2011, Issue 1, 2011., 2011
As the prevalence and severity of anthelmintic resistance continue to rise, nematode infections in sheep correspondingly reduce the profitability of the sheep industry. In Costa Rica, sheep production systems are increasing in both number and importance.
R. Maroto, A. E. Jiménez, J. J. Romero, V. Alvarez, J. B. De Oliveira, J. Hernández, David W. Horohov   +6 more
wiley   +1 more source

Genetic Parameters and Genome‐Wide Association Studies for Fertility and Reproduction Traits in U.S. Katahdin Sheep Based on the Single‐Step GBLUP Methodology

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT Sheep production contributes to a secure and diverse food and fibre supply in the United States, with growing ethnic diversity strengthening demand. Katahdin is a composite hair‐type sheep breed developed in the United States that has become the most popular breed in many regions of the country and the first one to have genomic selection ...
Alejandra Toro Ospina, Ronald M. Lewis, Bradley A. Freking, Joan M. Burke, Thomas W. Murphy, Carrie S. Wilson, Luiz F. Brito   +6 more
wiley   +1 more source

Desarrollo del eje reproductivo endocrino en corderos de pelo

Revista Mexicana de Ciencias Pecuarias, 2016
Los objetivos fueron caracterizar los perfiles de LH y testosterona (T) y la respuesta a GnRH en corderos de pelo. Estudio 1: se utilizaron corderos Blackbelly (n=4), Pelibuey (n=5), Blackbelly x Pelibuey (Cruzas; n=8).
Luis Javier Montiel Olguín, Héctor Raymundo Vera Ávila, Eugenio Villagómez Amezcua, Vicente Castañeda Rodríguez, Mario Cárdenas León, Héctor Jiménez Severiano   +5 more
doaj   +1 more source

Análisis económico del uso de clorhidrato de zilpaterol en la alimentación de corderas [PDF]

, 2015
Con el objetivo de realizar un análisis económico sobre el uso de clorhidrato de zilpaterol en ovinos se realizó una investigación con datos provenientes de la engorda de 24 corderas Dorper - Pelibuey en finalización mediante la técnica de costos ...
ALVAREZ VALENZUELA, FRANCISCO DANIEL, ALVAREZ VALENZUELA, FRANCISCO DANIEL, AVENDAÑO REYES, LEONEL, AVENDAÑO REYES, LEONEL, CORREA CALDERON, ABELARDO, CORREA CALDERON, ABELARDO, MACIAS CRUZ, ULISES, MACIAS CRUZ, ULISES, REBOLLAR REBOLLAR, SAMUEL, REBOLLAR REBOLLAR, SAMUEL, ROJO RUBIO, ROLANDO, ROJO RUBIO, ROLANDO, SOTO NAVARRO, SERGIO ANTONIO, SOTO NAVARRO, SERGIO ANTONIO   +13 more
core  

Productive and reproductive performance and metabolic profiles of ewes supplemented with hydroponically grown green wheat (Triticum aestivum L.) [PDF]

, 2016
Inclusion of high levels of concentrate in the diets of late gestation and lactating ewes to improve productive and reproductive performance is a common practice.
Abdalla Filho, Adibe Luiz, Abdalla Filho, Adibe Luiz, BERNAL BARRAGAN, HUGO, BERNAL BARRAGAN, HUGO, CERRILLO SOTO, MARIA ANDREA, CERRILLO SOTO, MARIA ANDREA, ESTRADA ANGULO, ALFREDO, ESTRADA ANGULO, ALFREDO, GUERRERO CERVANTES, MARIBEL, GUERRERO CERVANTES, MARIBEL, Luginbuhl, Jean Marie, Luginbuhl, Jean Marie, PLASCENCIA JORQUERA, ALEJANDRO, PLASCENCIA JORQUERA, ALEJANDRO, RIOS RINCON, FRANCISCO GERARDO, RIOS RINCON, FRANCISCO GERARDO, Zeidan Mohamed Salem, Abdelfattah, Zeidan Mohamed Salem, Abdelfattah   +17 more
core   +1 more source

Effect of Diet Neutral Detergent Fibre Content on Dry Matter Intake, Nutrient Digestibility, Growth Efficiency and Carcass Characteristics of Finishing South African Mutton Merino Wether Lambs

Veterinary Medicine and Science, Volume 12, Issue 2, March 2026.
Feeding South African Mutton Merino lambs low‐NDF lucerne hay diets improved nutrient digestibility, energy utilisation, growth efficiency, and carcass quality. Despite lower intake at the lowest NDF level, fibre digestibility and feed conversion improved, indicating that highly digestible, low‐NDF finishing diets enhance lamb growth and carcass traits.
Inalene De Klerk, Abraham Vlok Ferreira, Michael Denis Fair, Arnold Hugo, Ockert Bernard Einkamerer   +4 more
wiley   +1 more source

RELATIONSHIP BETWEEN BODY VOLUME AND BODY WEIGHT IN PELIBUEY EWES

Tropical and Subtropical Agroecosystems, 2021
<p><strong>Background.</strong> In terms of animal management, the measurement of body weight (BW) is important in the design of nutrition and health programs. <strong>Objective.</strong> The objective of the present study was to evaluate the relationship between body volume (BV) and BW in Pelibuey ewe lambs and ewes.
Rosario Salazar-Cuytun, Ricardo A. Garcia-Herrera, Alfonso L. Munoz-Benitez, Germani Munoz-Osorio, Enrique Camacho-Perez, Martin Ptacek, Rodrigo Portillo-Salgado, Einar Vargas-Bello-Perez, Alfonso Juventino Chay Canul   +8 more
openaire   +2 more sources

Relationship between body weight and scrotal circumference in growing Pelibuey sheep raised under tropical conditions

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2023
The body weight (BW) of an animal is a vital economic trait that might help in decision-making in the handling of animals. The objective of the present study was to develop equations for the prediction of BW in Pelibuey sheep using scrotal circumference (
M.A. Ramírez-Bautista, A.A. Cruz-Tamayo, M.Á. Gastélum-Delgado, J.A. Aguilar-Quiñónez, T.L. Tyasi, A.L.C. Gurgel, R.A. García-Herrera, A. J. Chay-Canul   +7 more
doaj   +1 more source

Comportamiento reproductivo en ovejas de pelo tratadas con diferente progestágeno para la sincronización del estro en condiciones de trópico seco [PDF]

, 2017
Trabajo de tesis que desarrolla investigación sobre la sincronización del estro en ovinos de pelo en condiciones de trópico secoEl presente estudio fue realizado en el rancho La Esperanza, localizado en Higo Prieto, en el municipio de Tlatlaya, México ...
Cobos Millán, Hugo
core  

Non‐Invasive and Low‐Cost Approach for Estimating Sheep Weight Using Computer Vision

Engineering Reports, Volume 7, Issue 8, August 2025.
Non‐invasive sheep weight estimation system using a Kinect V2 sensor, integrating EfficientNetB3 for frame selection, U‐Net for segmentation, and CNN‐based feature regression for weight prediction. The ensemble model achieved an RMSE of 3.43 kg and R 2 of 0.89, improving accuracy and reducing animal stress.
Júlio V. M. Marques, Willians S. Santos, Rafael L. Araújo, Jose L. R. Sarmento, Romuere R. V. Silva   +4 more
wiley   +1 more source