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頁籤選單縮合
題名 | 飼糧蛋白質供餵量對種用番鴨性成熟及產精性能之影響=The Effect of Dietary Protein on Sexual Maturity and Semen Characteristics of Muscovy Drake |
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作者 | 李育才; 潘金木; 陳添福; 林誠一; | 書刊名 | 畜產研究 |
卷期 | 29:4 1996.12[民85.12] |
頁次 | 頁289-296 |
分類號 | 437.73 |
關鍵詞 | 公番鴨; 飼糧蛋白質; 性成熟; 產精性能; Muscovy drake; Dietary protein; Sexual maturity; Semen characteristics; |
語文 | 中文(Chinese) |
中文摘要 | 本試驗旨在探討公番鴨育成期飼糧之蛋白質用量對維持適當體重和性成熟年齡齊一性,提高採精率、精液品質及公禽利用率之效果。公番鴨係採用本分所育成之L302品系,共使用54隻,分為三處理,每處理六隻並進行三重複,育雛期0~3週齡,育成期4~12週齡,嗣後逢機分組,開始餵飼試驗日糧,基礎飼糧以玉米、大豆粕為主成分,各組代謝能含量(ME)固定為2750kcal/kg,粗蛋白(CP)處理則分為12、14、16%含量三組,測定期生長曲線、第二性徵、生殖器損傷率及精液性液。試驗結果顯示,公番鴨至28週齡達性成熟期,三組體重相近,皆為4.6公斤;第二性徵以CP12%組延遲約1~2週,且配種行為以餵飼CP14及16%兩者為佳,生殖器損傷情形則三組都未發現。精液性狀、包括精液量、精虫數與色澤均以CP16%者較佳,而精子活力則無差異。由此推估育成期及性成熟前期,飼糧CP12%組會減低體重及延遲性成熟,而推薦育成期使用CP14%之飼糧,配種期則推薦餵飼CP14~16%者為佳。 |
英文摘要 | The purpose of this experiment was to investigate the effects of dietary protein during growing period on sexual maturity and semen characteristics of Muscovy drake. The starting and growing period were 0~3 and 4~12 weeks of age, respectively. Thereafter, 54 Muscovy drakes (L302 line) were randomly allocated to three treatments, with six ducks for each and the experiment were repeated three times. The basal diet was formulated with corn and soybean meal. The three diets had the same metabolizable energy (2750kcal/kg) and with crude protein from 12, 14 and 16%. The growth curve, secondary sexual characteristics, percentage of damaged reproductive organs and the semen characteristic were determined. The results showed that the body weight of ducks from three treatments were the same (4.6kg) when they reached sexual maturity (28 weeks of age). The ducks fed diet with 12% crude protein delayed the development of secondary sexual characteristic for 1~2 weeks. Mating behavior in ducks fed CP 14, 16% were superior to CP 12% group. No damage of reproductive organs were found in all treatments. Although no difference in sperm activity among three treatments was found, there were better semen quality which included quantity, number and color for ducks fed with the CP 16% diet. These results suggest that ducks fed with CP 12% diet in growing and pre-breeding period retarded body weight gain and delayed sexual maturity. Ducks in growing period provided CP 14% diet would perform better than other dietary protein treatments for Muscovy drakes. Diet containing 14~16% crude protein was recommended for the Muscovy drakes during breeding period. |
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