WEKO3
アイテム
Effects of testosterone injection on the semen quality in boars during high ambient temperature
http://hdl.handle.net/10458/741
http://hdl.handle.net/10458/741fd1c452c-857c-4f5d-bdf8-113f011e7a46
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
ashizawa37.pdf (788.6 kB)
|
|
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2007-10-11 | |||||
| タイトル | ||||||
| タイトル | Effects of testosterone injection on the semen quality in boars during high ambient temperature | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| キーワード | ||||||
| 言語 | ja | |||||
| 主題Scheme | Other | |||||
| キーワード | 精子 | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| キーワード | sperm | |||||
| 資源タイプ | ||||||
| 資源タイプ | journal article | |||||
| 著者 |
芦沢, 幸二
× 芦沢, 幸二× Nakayama, Hiroaki× Hidaka, Ryoichi |
|||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Attempts were made to inhibit the reduction in semen quality and reproductive performance by injecting testosterone into boars during the hot summer months. Testosterone enanthate （250 or 500 mg per boar） was injected into the rump muscle of boars once a month from June to September. The most remarkable effects were obtained in the incidence of abnormal spermatozoa. In the control group （no injection）, the percentages of abnormal spermatozoa i.e. those with proximal cytoplasmic droplets, abnormal heads and coiled and bent tails increased to 34.3 ± 3.6% in September. In contrast, the percentages of abnormal spermatozoa in the testosterone-injected groups remained unchanged at 9.7% （250 mg per boar） and 12.9% （500 mg per boar） during this period. Furthermore, in the testosterone-injected groups, litter sizes at birth, of gilts naturally mated in August and September, were significantly higher than those of the control group. However, a decrease in the total spermatozoa per ejaculate was observed during and after treatment with a high concentration of testosterone （500 mg per boar）. These results suggest that injecting suitable concentrations of testosterone into boars during the hot summer months would be effective for the maintenance of their reproductive performance. | |||||
| 言語 | en | |||||
| 書誌情報 |
en : Animal reproduction science 巻 25, 号 1, p. 73-82, 発行日 1991 |
|||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 03784320 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA00525633 | |||||
| 著者版フラグ | ||||||
| 出版タイプ | AM | |||||
