不同來源青貯料對荷蘭乳牛生產性狀之影響

本試驗旨在探討青割玉米青貯料、盤固草青貯料與尼羅草青貯料對泌乳牛生產性狀之影響。試驗以3×3拉丁方格設計，選取18頭平均乳量與平均泌乳天數相近之泌乳牛逢機分成三個處理，分別為（A）青割玉米青貯料組，（B）盤固草青貯料組、及（C）尼羅草青貯料組。飼糧配方為等氮不等能量但青貯料來源不同之飼糧，以完全混合飼糧方式給予，試驗每期3週，前2週為適應期，最後1週為試驗期，紀錄及測定產乳性狀。結果顯示，青割玉米青貯料組有較高之乾物質採食量與乳蛋白率，而體增重、乳產量、3.5%乳脂校正乳量及其他乳成分比率則三組間皆無顯著差異。綜合上述結果可知，除採食量與乳蛋白率外，三試驗處理組對於泌乳牛生產性狀並無顯著之影響，由以上試驗結果發現，尼羅草青貯料對於泌乳牛隻飼養效果與青割玉米青貯料及盤固草青貯料相近，故尼羅草可為一良好國產牧草之選擇。

關鍵字

尼羅草；青貯料；乳牛

並列摘要

The aim of this study was to evaluate the effect of corn silage(CS), pangolagrass silage(PS), and nilegrass silage(NS)on milking performance of Holstein cows. A total of eighteen lactating Holstein cows with an average DIM(Days in milk)of 69-day, and an average milk yield of 28.3 kg/day of milk daily were selected. The experiment was a 3×3 Latin square design, and the cows were allotted into three dietary treatments. The diets were iso-nitrogenous and formulated according to NRC (1989) recommendations. The results showed that the dry matter intake and milk protein content in corn silage group were higher than those of PS and NS (P ＜ 0.05). There were no significant difference in milk production, 3.5% fat corrected milk production or milk compositions except for protein content (P ＜ 0.05) among the 3 silage groups. With a similar feeding performance as the other two silages, nilegrass was considered to be a good domestic forage in Taiwan.

並列關鍵字

Nilegrass ； Silage ； Cow

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