Effects of one-hour daily outdoor access on milk yield and composition and behaviors of tethered dairy cows
| Autor: | Huricha, Ai Nanbu, Masashi Takemoto, Ken-ichi Takeda |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | Animal Bioscience, Vol 37, Iss 9, Pp 1653-1659 (2024) |
| Druh dokumentu: | article |
| ISSN: | 2765-0189 2765-0235 |
| DOI: | 10.5713/ab.23.0539 |
| Popis: | Objective We investigated the effects of outdoor access for one-hour per day (ODA) on milk yield and composition and behaviors of tethered dairy cows. Methods Eleven all-day tethered dairy cows were treated with ODA for two weeks. To evaluate the effect of ODA on milk yield, we first calculated the average daily milk yield of each cow for three days during two weeks before the ODA, three days before the ODA, three days at the end of the ODA, and three days during two weeks after the ODA. We then compared the milk yield change during the ODA with that for two weeks before and two weeks after the ODA. The effects of ODA on milk compositions and behaviors were evaluated by comparing the average values for each composition and behavior for the three days before the ODA and the last three days of the ODA. Results The decrease of milk yield during the two weeks of ODA was significantly higher than that during the two weeks before ODA (p |
| Databáze: | Directory of Open Access Journals |
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