頁籤選單縮合
題 名 | 紐西蘭白兔與雷克斯兔之乳頭性狀分析=Analysis of Teat Characteristics of New Zealand White and Rex Rabbits |
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作 者 | 吳明哲; 陳念琪; 黃瓊姿; 李茂盛; | 書刊名 | 中國畜牧學會會誌 |
卷 期 | 26:4 1997.12[民86.12] |
頁 次 | 頁451-460 |
分類號 | 437.68 |
關鍵詞 | 兔; 品種; 乳頭數; 產仔數; Rabbit breed; Number of teats; Litter size; |
語 文 | 中文(Chinese) |
中文摘要 | 乳頭性狀有乳頭數與左右側乳頭排列對稱性,是選留更新用種兔的重要項目之一 。試驗一:於 1996 年 10 月至 12 月間,調查 203 頭紐西蘭白兔、74 頭雷克斯白兔、49 頭錦企拉色雷克斯兔、64 頭海狸色雷克斯兔、以及 141 頭級進白兔, 合計 531 頭種母兔 之乳頭數,品種間或毛色品系間均有差異 (P<0.05),分別有 8.01 ± 0.09、8.44 ± 0.16 、8.91 ± 0.19、8.31 ± 0.17 和 8.36 ± 0.11 個乳頭。試驗二:於 1997 年 1 月至 2 月間, 調查紐西蘭、雷克斯和級進種的白色母兔群,所生的 187 胎之 1133 頭新生仔兔之 左右側乳頭數。 左右側乳頭數均為 3、 4 或 5 的對稱仔兔頭數所佔比率分別有 0.09、 47.31 和 20.56%; 乳頭數一側有 4 個另一側有 5 個的仔兔頭數佔 31.59%; 而一側有 3 個另一側有 4 個的仔兔頭數佔 0.36%;還有一頭仔兔 (0.09%) 是左側 3 個右側 5 個乳頭 的。 紐西蘭白兔、 雷克斯白兔和級進白兔種之仔兔乳頭對稱比率在上述三個品種分別有 69.1、66.3 和 74.8%, 其中左右各 5 個乳頭的仔兔頭數在三個品種中分別有 27.9、17.2 和 11.4%。 試驗三:於 1997 年 4 月檢視 79 頭分娩母兔的產仔數和乳頭數,以及仔兔的 乳頭數。 紐西蘭白兔、 雷克斯白兔和級進白兔的產仔數為 6.74 ± 0.37、 5.45 ± 0.81 和 5.76 ± 0.65 頭。母兔乳頭數型為 L5R5 時,其仔兔為 L5R5 的百分率有 33% , 而母兔為 L4R4 型時,其仔兔為 L5R5 的百分率僅有 18%。 |
英文摘要 | Number of teats and symmetry as teat characteristics is one of selection criteria for the replacement of rabbit stocks. In Exp. 1, a total of 531 does including 203 New Zealand White, 74 Rex White, 49 Rex Chinchilla, 64 Rex Castor, and 141 upgraded White rabbits was investigated for the number of teats during October to December in 1996. Number of teats was significantly different among breeds (P<.05) with 8.01 ± 0.09, 8.44 ± 0.16, 8.91 ± 0.19,8.31 ± 0.17 and 8.36 ± 0.11 teats, respectively, for above rabbit breeds and/or fur color strains. In Exp. 2, a total of 1133 newborn rabbits with a solid white fur color coming from 187 litters was recorded for their numbers of teats on both right and left sides during January and February in 1997. Newborn rabbits with three, four or five pairs of teats in the population were 0.09,47.31 and 20.56%, respectively. The frequency of newborn rabbits with four teats on one side and five teats on the other side was 31.59%. The asymmetry frequency of rabbits with three and four teats was 0.36%. Only one rabbit (0.09%) with three and five teats was observed. Symmetry of teat characteristics was designated by equal number of teats on both sides. Frequencies of New Zealand White, Rex White and upgraded White rabbits on teat symmetry were 69.1, 66.3 and 74.8%, respectively. Accordingly, frequencies of newborn rabbits with five pairs of teats were 27.9, 17.2 and 11.4% in the above three breeds In Exp. 3, a total of 79 white fur farrowing does with 502 newborns was investigated for litter size and teat traits in April of 1997. Litter sizes of New Zealand White, Rex White and upgraded White averaged 6.74 ± 0.37, 5.45 ± 0.81 and 5.76 ± 0.65 head, respectively, For dams having the R5L5 teat numerary type, 33% of offsprings had the L5R5 type. Whereas, only 18% of offsprings had the L5R5 type as their dams had the L4R4 type. In conclusion, litter size was less than the number of teats. The teat symmetry of newborn rabbits, i.e. the L5R5 type, was affected maternally. |
本系統中英文摘要資訊取自各篇刊載內容。