Results 31 to 40 of about 594 (167)

Influence of Monensin and Salinomycin on Growth and Carcass Characteristics in Pelibuey Lambs [PDF]

Journal of Applied Animal Research, 2005
Abstract Salinas-Chavira, J., Ramirez, R.G., Lara-Pedroza, E. de L., Gonzalez- Suarez, M. and Dominguez-Munoz, M. 2005. Influence of monensin and salinomycin on growth and carcass characteristics in Pelibuey lambs. J. Appl. Anim. Res., 28: 93–96.
J. Salinas-Chavira, R. G. Ramírez, E. L. de Lara-Pedroza, M. González-Suárez, M. Domínguez-Muñoz   +4 more
openaire   +1 more source

Immune Responses Associated with Resistance to Haemonchosis in Sheep

BioMed Research International, Volume 2013, Issue 1, 2013., 2013
This paper examines the known immunological and genetic factors associated with sheep resistance to infection by Haemonchus contortus. Such resistance is an inheritable genetic trait (h2, 0.22–0.63) associated with certain sheep breeds. Resistant sheep do not completely reject the disease; they only harbor fewer parasites than susceptible sheep and ...
Fernando Alba-Hurtado, Marco Antonio Muñoz-Guzmán, Luis I. Terrazas   +2 more
wiley   +1 more source

Factors associated with the reproductive performance of ewes inseminated laparoscopically in England and Wales: A longitudinal study

Veterinary Record, EarlyView.
Abstract Background Laparoscopic intrauterine artificial insemination (Lap‐AI) is used in sheep genetic improvement programmes. However, the lambing rate (LR) (i.e., the proportion of inseminated ewes that lamb) following Lap‐AI is variable. Previously, one small UK study investigated factors associated with LR, but it did not adjust for dependencies ...
Mike J. Glover, Laura E. Green, Rachel Clifton   +2 more
wiley   +1 more source

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

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

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

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

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

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

Investigating mutations in the genes GDF9 and BMP15 in Pelibuey sheep through the amplification-refractory mutation system with tetra-primers

Austral Journal of Veterinary Sciences, 2023
Single Nucleotide Polymorphisms (SNP) or mutations are variations with a broad distribution in the genome and, as part of genetic studies, SNP allow the identification of allelic variants related to characteristics of economic importance in sheep ...
Canuto Muñoz-García, Obdulia L. Segura-León, Julio C. Gómez-Vargas, Juan González-Maldonado, Juan A. Quintero-Elisea, Juan F. Martínez-Montoya, Cesar Cortez-Romero   +6 more
doaj   +1 more source