Lameness associated with bacterial chondronecrosis with osteomyelitis (BCO) continues to be an important topic of great interest to global poultry production. Caused by bacterial infection of susceptible necrotic bone tissue, the disease severely affects animal health, welfare, and productivity, leading to significant economic losses annually. In recent years, the Kazakhstan poultry industry has enjoyed significant investment and strong growth, with goals of self-sufficiency within the decade. However, there remains a significant knowledge gap in poultry research in the nation, especially regarding the topic of BCO lameness. As such, this study aims to provide a preliminary evaluation of BCO lesion prevalence in different geographical regions of the country―namely Abai, Almaty, and Akmola. In each region, about 200 broilers from local poultry farms were procured, humanely euthanized, and necropsied to evaluate prevalence of femoral and tibial lesions commonly associated with BCO lameness. On average, most broilers had no damage to femoral head (78.17%) followed by femoral head separation (FHS, 11.94%), while the tibial head saw ubiquitous degrees of damage ranging from severe (71.42%) to observable (23.06%). These findings signify potential underlying issues connected to BCO lameness that will necessitate early management and intervention measures to prevent future spread of the disease.

This article presents the results of the introduction of Canadian digital technologies Vytelle GrowSafe in the beef cattle breeding of Kazakhstan to assess Residual Feed Intake (RFI). The experiments were carried out with Qazaq Aqbas Breed in the Privet Farms of North Kazakhstan (Akmola and Pavlodar farms). As part of the ration in Akmola farm for a bull of 350 kg of weight, are contained 77 MJ or 7.6 kg of DM, in Pavlodar farm for a bull weighing 290 kg contains 65 MJ or 6.5 kg of DM. Studies have shown that in the Akmola farm the RFI index ranged from -2.08 to +2.88, in the Pavlodar farm from -1.89 to +2.06. According to the results of research in the Akmola farm, the RFI assessment show, 7 out of 26 bulls are suitable for breeding sale, in the Pavlodar farm out of 55 bulls 18. The assessment of the productive effect of feed on RFI, mainly (by 80%), coincided with the assessment of the ratio of gain to consumed dry matter, and some bulls showed deviations in terms of residual average daily live weight gain and the corrected value of the ratio of feed costs to live weight gain, which led to incomplete manifestation of the productive potential of the consumed feed.

Background and Aim. Lameness in broiler chickens is a major welfare and economic concern affecting productivity and farm profitability worldwide. However, information regarding the prevalence and associated risk factors of broiler lameness in Kazakhstan remains limited. This study aimed to evaluate the prevalence of lameness in commercial broiler farms and identify the main contributing factors under local production conditions.Materials and Methods. A cross-sectional survey was conducted from July to October 2025 on 10 commercial poultry farms located in different regions of Kazakhstan. Data were collected using a structured questionnaire covering housing conditions, litter management, stocking density, feeding practices, environmental control, health management, and the occurrence of lameness. Descriptive statistical analysis was performed to evaluate the collected data.Results. Lameness was reported on mostfarms, although prevalence varied substantially among production systems. The proportion of lame birds at slaughter ranged from 0 to over 10%, with an average prevalence of 2.1 ± 3.2%. Severe lameness cases (Score ≥ 3) averaged 4.7 ± 6.9%. Poor litter quality, high stocking density, inadequate temperature and humidity control, and differences in feeding strategies were identified as major risk factors. Among infectious agents, Staphylococcus spp. was the most frequently reported pathogen. Although preventive measures were implemented on most farms, their implementationwas often inconsistent.Conclusion. The findings demonstrate that broiler lameness in Kazakhstan is a multifactorial problem influenced by management, environmental, and infectious factors. This study provides one of the first comprehensive assessments of lameness in commercial broiler production in Kazakhstan and highlights the need for improved management practices, standardized monitoring systems, and more effective prevention strategies.