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題名 | 小耳種李宋系迷你豬乳齒萌發順序之研究=Studies on the Eruptive Teeth Sequence in Small-Ear Lee-Sung Strain Miniature Pig |
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作者 | 鄭位明; 王佩華; 章浩宏; 宋永義; Cheng, Wei-ming; Wang, Pey-hwa; Chang, Hao-hueng; Sung, Yung-yi; |
期刊 | 中國畜牧學會會誌 |
出版日期 | 19990900 |
卷期 | 28:3 1999.09[民88.09] |
頁次 | 頁347-358 |
分類號 | 437.654 |
語文 | chi |
關鍵詞 | 小耳種李宋系迷你豬; 乳齒; 牙齒萌發; 遺傳率; Small-ear Lee-sung strain miniature pig; Deciduous teeth; Eruption of teeth; Heritability; |
中文摘要 | 本研究之目的為建立小耳種李宋系迷你豬之牙齒萌發順序資料,完成其牙齒萌發模 式(eruption pattern of teeth)以瞭解小耳種李宋系迷你豬牙齒萌發順序及模式,提供畜 牧、獸醫及牙醫學上進行牙齒實驗時之參考依據。本研究之進行,以飼養於臺灣大學農業試驗 場畜牧組之保種用兩對全同胞及一對半同胞之小耳種李宋系迷你豬,每對皆以一雄配二雌方 式進行配種,計得仔豬12窩,總計64頭,以觀察其牙齒萌發之情形。每窩仔豬從出生至6月 齡,每週觀察1次,並稱體重。試驗結果顯示,其乳齒萌發有一定之萌發順序,其中除第二 乳白齒及第三乳臼齒外,在相同萌發齒序時,下顎乳齒之萌發時間較上顎乳齒萌發時間為早; 另在相同萌發齒序下,除了下顎第三乳臼齒、第四乳臼齒及上顎第四乳臼齒外,雄性之葫發時 間似乎均較雌性為早(P>0.05)。在第一乳臼齒方面:雄性上顎之第一乳臼齒萌發比率為 42.11%比雌性萌發比率73.08%為低。比較其雄、雌性乳齒萌發之平均時間與萌發時之平均体 重,結果顯示兩者間均呈正相關。若將乳齒萌發週齡之資料進行遺傳率大小之預估,結果發 現其具中等至高遺傳率。 |
英文摘要 | The purpose of this study was to make the small-ear Lee-Sung strain miniature pig an experimental animal model. We established the data banks of teeth eruption time of miniature piglets and recognized it's eruption sequence. Moreover, further investigations of estimate heritability of eruption time on these animal model were also performed. Two pairs of full-sibs and one pair of half-sibs of small-ear Lee-Sung strain miniature pigs kept on NTU farm were chosen to breed. One boar was used to mate two sows to give birth to 64 piglets in 12 lifters. The eruption status of teeth of these piglets were observed and recorded with different intervals according to the various age groups from birth to 6 months of age. Observation was carried out once weekly from birth to 6 months of age while body weights were recorded. We found that the teeth eruption sequence of these piglets bore high similarity. All the mandibular deciduous teeth erupted earlier than the maxilla deciduous teeth except the second and third deciduous molar. In the same eruption, the time of teeth eruption in male seemed earlier than the female (P>0.05), except for the third and fourth deciduous molar in mandibular and the fourth deciduous molar in maxilla. The eruption rate of the first deciduous molar on boar was 42.11%, higher than the 73.08% of gilt. Positive correlation was noted between the teeth eruption time and the average body weight. It was noted that the heritability was from medium to high in analysis of variance by the eruption data. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。