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Farmers usually control cattle's serum vitamin A level to improve beef meat fat quality. They sometimes conduct blood tests, but that is invasive and another measurement system is desirable. The objective of this study was to investigate the relationship between serum vitamin A level and pupil colors of beef cattle for developing a vitamin A monitoring system by machine vision. Images of cattle eyes...
In order to make better beef with high marbling score, breeders need to control serum vitamin A level from 30 IU/dl to 50 IU/dl during the middle fatting phase. Today, serum vitamin A level of beef cattle is usually measured by blood assay. However, blood assay has some disadvantages such as it is cost and time-consuming. For establishment of new method for prediction of serum vitamin A level, this...
To increase the BMS (Beef Marbling Standard) score of Japanese Black Cattle, keeping the cattle serum vitamin A at a low level (30–40 IU/dl) during fattening age is an effective way. The traditional method of monitoring the serum vitamin A level is blood assay. However, it is costly, time-consuming and makes cattle stressful. A new approach by using 2CCD camera is proposed in this study. Pupil reflex...
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