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題 名 | 催產素注射與擠乳對哺乳母豬乳靜脈血流速率與乳成分之影響=Effect of Oxytocin Injection and Udder Massage on Blood Flow Rate of Mammary Vein in Nursing Sows and Their Milk Components |
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作 者 | 劉振發; 吳明哲; 周佳樂; 王金松; 蕭振文; 劉瑞珍; 陳立人; | 書刊名 | 畜產研究 |
卷 期 | 39:4 民95.12 |
頁 次 | 頁271-280 |
分類號 | 437.654 |
關鍵詞 | 乳靜脈; 血流速率; 催產素; 豬乳; Mammary vein; Blood flow rate; Oxytocin; Sow milk; |
語 文 | 中文(Chinese) |
中文摘要 | 哺乳動物乳腺合成乳汁所需的原料是靠流經乳腺血液中的物質所提供,本研究旨在探討流經乳腺的血流速率對乳腺合成乳汁的成分與含量之影響。利用超音波反射的原理,把杜普勒超音波探針裝置在乳靜脈血管的外壁上,藉由血管中血液流動的超音波反射,由同一探針接收反射音波,並以個人電腦每秒記錄一筆血液流速。試驗結果顯示,以擠乳(手按摩乳房)刺激產後第14、21和35天的蘭嶼母豬乳房,在2分鐘後三者乳靜脈血流速率均達到高峰,分別增加20.0、35.0和7.0%,隨後則緩慢下降。當改以耳靜脈注射30IU的催產素後,隨即擠乳,則產後第14、21和35天的蘭嶼母豬乳靜脈血流速率均於6分鐘後達到高峰,並分別增加45.0、65.0和17.6%,隨後亦緩慢下降。產後母豬不論有無注射催產素,均以產後第21天的血流速率增加較多,而在產後第35天則僅有少量的增加,且產後第35天的蘭嶼母豬的乳汁量亦較少。另以催產素注射誘發5頭分娩後之蘭嶼母豬排乳,再逢機自有排乳的乳頭擠集乳樣,並分別分析其產後第2、7、14、21、28和35天的乳汁成分。結果顯示:產後第2天的豬乳之乳脂肪含量最高(7.88%),其後逐漸下降至產後第21天的最低量(P<0.05) 4.76±0.81%,然後再則上升,至產後第35天為6.36±0.61%;乳蛋白於產後第2天為最高,其後的變化與乳脂肪相類似;而乳糖含量以產後第2天的4.60±0.27%為最低量,逐漸上升,至產後第28天達5.70±0.27%之最高量(P<0.05)。乳無脂固形物含量的變化和乳脂肪相類似,以產後第2天的含量最高,其後則逐漸下降。 |
英文摘要 | Blood supply to the mammary glands is essential to milk synthesis at the mammary glands in mammals. Blood flow rate may affect the milk yield due to the supplying rate of blood components. By using ultrasonic techniques, this study was able to detect the flow rate of blood in the mammary vein. The Doppler ultrasonic probe was attached onto the surface of the mammary vein after being surgically explored and the relative blood flow rate were detected and recorded per second. Blood flow rate of each animal at beginning was set to a relatively low value prior to the treatment. Udder massage for collecting milk was applied on nursing sows at 14, 21 and 35 days post-parturition, respectively, and the blood flow rate reached the peak within 2 minutes with an increament of 20.0, 35.0 and 7.0%. When sows were injected with 30 IU oxytocin via ear followed immediately by udder massage, the blood flow rate reached the peak within 6 minutes by an increment of 45.0, 65.0 and 17.6% for those sows at 14, 21 and 35 days post-parturition, respectively. In conclusion, blood flow rate of the mammary vein of nursing sows at 21 days post-parturition had the highest increment with or without oxytocin injection. Nursing sows at 35 days post-parturition had a least increment of blood flow rate and they also produced the smallest amount of milk. Five sows were used to analyze the milk compositions on day 2, 7, 12, 21, 28 and 35 after parturition. Milk collection was performed after oxytocin injection and at lest 50 ml of milk was collected per sow on each collection day. The level of milk fat was highest on Day 2, then gradually decreased to the lowest level of 4.76±0.61% (w/v) on Day 21 (P<0.05), followed by gradually increase to 6.36 ±0.61% on Day 35. The level of milk protein and other not-fat solids had a similar profile as that of the milk fat. The content of lactose in milk gradually increased from Day 2 to the highest level of 5.70 ±0.27% on day 28 (P<0.05). |
本系統中英文摘要資訊取自各篇刊載內容。