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Anim Biosci > Accepted Articles
https://doi.org/10.5713/ab.22.0329    [Accepted] Published online May 2, 2023.
Relation between body condition score and conception rate of Japanese Black cows
Asep Setiaji1,*  , Takuro Oikawa2  , Daichi Arakaki2 
1Department of Animal Science, Faculty of Animal and Agricultural Sciences, Universitas Diponegoro, Tembalang Campus, Semarang 50275, Central Java, Indonesia
2Faculty of Agriculture, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan
Correspondence:  Asep Setiaji, Tel: +62-24-747-4750, Fax: +62-24-747-4750, Email: asepsetiaji93@gmail.com
Received: 29 August 2022   • Revised: 6 January 2023   • Accepted: 2 March 2023
This study analyzes interactions of body condition score (BCS) with other factors and the effect of BCS on estimates of genetic paremeters of conception rate (CR) in Japanese Black cows.
Factors affecting CR were analyzed through the linear mixed model, and genetic parameters of CR were estimated through the threshold animal model. Result: The interactions between BCS and each season and the number of artificial inseminations (AI) was significant (p<0.05), but that between BCS and parity showed no significance for CR. High CR was observed with BCS 3 in autumn (0.56 ± 0.01) and BCS 4 in summer (0.56 ± 0.02). The highest CR with BCS 3 (0.56 ± 0.02) and BCS 4 (0.55 ± 0.01) was observed at first AI. With BCS 5, however, the highest CR (0.55 ± 0.08) was observed at second AI.
The model with BCS was notably conducive to the estimation of genetic parameters because of a low deviance information criterion (DIC) of heritability that, nevertheless, was slightly lower than the model without BCS.
Keywords: Body Condition Score; Conception Rate; Heritability; Threshold Animal Model

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