RESEARCH ARTICLES
Subclinical ketosis: Prevalence and risk factor analysis in early lactation dairy cattle of Thrissur district
Anjaly Francis, V. R. Ambily, Usha Narayana Pillai, Deepa Chirayath, N. Madhavan Unny and M. Shynu
doi: https://doi.org/10.51966/jvas.2022.53.4.709-715
Journal of Veterinary and Animal Sciences.2022.53(4):709-715.
Author Details
Anjaly Francis : MVSc Scholar, Department of Veterinary Clinical Medicine, Ethics and Jurisprudence, College of Veterinary and Animal Sciences, Mannuthy, Thrissur- 680 651, Kerala Veterinary and Animal Sciences University, Kerala, India.
V. R. Ambily: Assistant Professor, Department of Veterinary Clinical Medicine, Ethics and Jurisprudence, College of Veterinary and Animal Sciences, Mannuthy, Thrissur -680651, Kerala Veterinary and Animal Sciences University, Kerala, India.
Usha Narayana Pillai : Professor and Head, Department of Veterinary Clinical Medicine, Ethics and Jurisprudence, College of Veterinary and Animal Sciences, Mannuthy - 680 651, Kerala Veterinary and Animal Sciences University, Kerala, India.
Deepa Chirayath : Veterinary Surgeon
N. Madhavan Unny : Professor, Department of Veterinary Clinical Medicine, Ethics and Jurisprudence, College of Veterinary and Animal Sciences, Mannuthy - 680 651, Kerala Veterinary and Animal Sciences University, Kerala, India.
M. Shynu : Professor, Department of Veterinary Biochemistry, College of Veterinary and Animal Sciences, Mannuthy, Kerala Veterinary and Animal Sciences University, Kerala, India
Article History
Received: 29.06.2022, Accepted: 22.09.2022, Published online: 31.12.2022
Corresponding author: V. R. Ambily
e-mail : ambily.vr@kvasu.ac.in
Citation: Anjaly,F., Ambily,V.R., Usha,N.P., Deepa,C., Madhavan Unny,N. and Shynu, M. 2022. Subclinical ketosis: Prevalence and risk factor analysis in early lactation dairy cattle of Thrissur district. J. Vet. Anim. Sci. 53(4): 709-715
DOI: https://doi.org/10.51966/jvas.2022.53.4.709-715
Abstract
Present study was conducted in Kerala Veterinary and Animal Sciences University farms, various organized and unorganised farms and individual households in Thrissur district during the period of May 2021 to April 2022 with the objectives of estimation of prevalence of subclinical ketosis (SCK) by screening dairy cows on 14th and 28th day post-partum. Multiparous cows with a blood beta-hydroxy butyrate (BHB) value ≥ 1.2 mmol/L without any overt clinical signs were considered as positive for SCK. One hundred and fourteen animals from second to seventh lactation were screened for SCK. Prevalence of SCK was 23.7 per cent on 14th day and 14.04 per cent on 28th day with a total prevalence of 27.2 per cent. Occurrence of SCK was highest in animals in second lactation (54.8 per cent) with more occurrence in crossbred Holstein Friesian cows. Maximum number of positive cases were observed in dairy cows of age between four to six years (54.8 per cent). Body condition score of diseased animals were higher than normal animals. Prevalence was highest in animals calved between months of July to September and 58.1 per cent of affected animals had male calf. Concurrent abnormalities during transition period were also assessed based on clinical examination and farm records.
Keywords: Subclinical ketosis, beta-hydroxy butyrate, multiparous cows, transition period
