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On the grazing behavior of hereford nursing cows on the pasture






Bulletin of the Faculty of Agriculture Shimane University (10): 14-20

On the grazing behavior of hereford nursing cows on the pasture

Behavioral differences between Hereford cows and Japanese Black Breed cows were examined. The weather and pasture conditions had no influence on the hours spent in the principal behaviors. Herefords spent about 8 h grazing and 9 h ruminating, distinctly longer than those of the Japanese Black Breed. Herefords rested about 5 h, which was less than the Japanese Black Breed. Herefords walked about 6.05 km in 24 h, which was greater than the Japanese Black Breed. Hereford grazing peaks within 24 h were observed 3 times in the day and once at night, almost the same as the Japanese Black Breed. Average number of boli regurgitated by Herefords in 24 h was about 750, which was 50% more than that of the Japanese Black Breed. Herefords average chewing rate was 66 times/min, which was faster than the Japanese Black Breed. Herefords spent 85% of their grazing hours eating pasture grass and 15% for native grass, in marked contrast to the Japanese Black Breed (native grass, 54%). Herefords spent more hours in grazing and ruminating, walked longer distances and preferred pasture grass over native grass. Herefords were apparently the more suitable breed for grazing on pasture grass than the Japanese Black Breed.

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Accession: 006027533



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