Study design for the investigation of likely aetiological factors of juvenile osteochondral conditions (JOCC) in foals and yearlings.

This research article focuses on the investigation of potential causes of juvenile osteochondral conditions (JOCC) in young horses, using multi-factorial analyses rather than focusing on a singular factor. The researchers targeted foals and yearlings born in Normandy between 2002 and 2004, monitoring their development, gathering data through various methods such as radiographic examinations, repeated body measurements, blood samples, locomotion evaluations, and nutrition and management program questionnaires.

Objective of the Research

• The primary objective of the research is to explore the likely causes or aetiology of osteochondrosis and other juvenile osteochondral conditions (JOCC) in foals and yearlings.
• Part of this objective is to overcome the limitations of previous studies which have mainly focused on single factors of JOCC or conducted under experimental conditions.
• Additionally, the research sought to identify potential early markers, risk factors, and prognostic factors pertaining to these conditions and their potential impact on the horses’ performance.

Research Methodology

• The Basac (Breeding, Osteochondral Status and Athletic Career) research program forms the backbone of this study. The program involves multi-factorial investigations on JOCC risk factors in field conditions.
• The study encompasses 393 foals of three French breeds, monitored from birth until weaning, with 321 of these remaining available for further monitoring.
• Different tests were conducted on these horses at different stages of their growth, including repeated body measurements, blood sampling, and locomotion evaluation from birth until yearling sales.
• A radiographic examination was performed on each subject at approximately 6 and 17 months of age.
• Simultaneously, information regarding their nutrition and management programs was collected from the farms using visits by specialists and through questionnaires.

Significance of the Study

• This study stands out for both the number of subjects involved and the diversity of information collected.
• It aims to construct a well-rounded picture of the potential causes of JOCC and the factors that might influence its development and prognosis.
• Moreover, the study was carried out under varied field conditions, mirroring the actual management practices in Normandy, thus offering a more realistic representation of the situation.
• The data collected are intended to be relevant for epidemiological analyses, contributing to a deeper understanding of JOCC and potential interventions.