Publications by authors named "Koji Hyakutake"
To evaluate the preventive effects of combined vaccination for Pasteurella multocida, Mannheimia haemolytica and Histophilus somni on respiratory diseases in Japanese Black calves, 295 calves at one farm were alternately assigned to two groups; 147 calves received the vaccine at 4 and 8 weeks of age (vaccination group), and the other 148 calves did not receive vaccine (control group). The incidences of respiratory diseases were 25.9 and 70.
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- The study aimed to investigate how vaccination and beta-carotene supplementation affect oxidative stress and antibody levels in calves.
- Thirty calves were split into two groups—one received beta-carotene supplements while the other did not, and both groups were vaccinated against a respiratory virus.
- Results showed that beta-carotene reduced oxidative stress in the supplemented group, but it did not influence the antibody response to the vaccine, possibly due to existing maternal antibodies.
Objective: To assess the usefulness and reliability of a milk-flow measurement technique and the values obtained in unobstructed teats and teats with teat canal stenosis in dairy cows.
Animals: 16 Holstein cows.
Procedures: Teats were assessed via hand milking and classified as unobstructed or partially obstructed.