- 期刊
飼糧中添加蜂膠萃取物對土番鴨生長性狀及腸道絨毛型態之影響
Effects of dietary propolis extract supplementation on growth performance and morphology of intestinal villi in Mule ducks
摘要
本試驗旨在探討飼糧中添加蜂膠萃取物對土番鴨生長性狀及腸道絨毛型態之影響。總共180隻三品種雛土番鴨於0～3週齡時餵飼含粗蛋白質（CP）18.7%及代謝能（ME）2,886 kcal/kg之飼糧，並於3週齡結束時進行逢機分組，分別為對照組（未添加蜂膠萃取物）、添加100及200 ppm蜂膠萃取物處理組，共計三處理組，每處理組三重複，每重複20隻，公母各半。3～10週齡飼糧含粗蛋白質16%及代謝能2,700 kcal/kg。於3、7與10週齡時，分別記錄鴨隻之個別體重及各組飼料採食量，以計算鴨隻增重及飼料轉換率。在7及10週齡時，每重複分別逢機採取公母各1隻，測定屠體性狀與腸道絨毛型態。試驗結果顯示，鴨隻體重及採食量於添加蜂膠萃取物處理組與對照組之間，並無顯著差異。在飼料轉換率方面，於各飼糧處理組之間亦無顯著差異。在腹脂重量方面，7週齡之土番鴨腹脂重於添加蜂膠萃取物組為37 g，有較對照組52 g為輕的趨勢（P=0.054）；在10週齡土番鴨之腹脂重均在35～49 g之間，於各處理組間無顯著差異；10週齡時，餵飼含蜂膠萃取物100 ppm及200 ppm之鴨隻十二指腸絨毛寬度較對照組者為寬；且餵飼含蜂膠萃取物200 ppm之鴨隻空腸絨毛高度較其它兩組者為高（P＜0.05）。綜上所述，餵飼含蜂膠萃取物雖無顯著提高鴨隻採食量及生長性能，但於7週齡時其腹脂重有較低之趨勢，且影響10週齡鴨隻十二指腸及空腸絨毛之型態。
並列摘要
The purpose of this study was to investigate the effects of dietary supplementation of propolis extract on growth performance and morphology of intestinal villi in mule ducks. A total of 180 three-way crossed mule ducks were used in the experiment. The diet containing CP 18.7% and ME 2,886 kcal/kg was fed to ducks from 0 to 3 weeks of age. At 3 weeks of age, these ducks were randomly allocated into three treatments and fed the basal diet (0 ppm propolis extract); basal diet with 100 ppm propolis extract; and basal diet with 200 ppm propolis extract, respectively. There were three replicates in every treatment with twenty ducks in each replicate, half male and half female. The CP and ME content of basal diet fed in the period from 3 to 10 weeks of age was 16% and 2,700 kcal/kg, respectively. Body weight and feed intake were determined at 3, 7 and 10 weeks of age for measuring feed intake, weight gain and feed conversion rate. At 7 and 10 weeks of age, one male and one female birds were randomly selected in each replicate for carcass trait determination, and the morphology of intestinal villi were also examined at 10 weeks of age. The results indicated that body weight and feed intake among the groups were not significantly different. No differences on feed conversion rate among the three treatments were observed. At 7 weeks of age, there was a trend that ducks fed the diets supplemented with propolis extract had lower fat pad weight compared with the control group (37 g vs. 52 g, P = 0.054). However, at 10 weeks of age, there were no significatnt differences. The ducks fed the diet with 100 ppm or 200 ppm propolis extract had wider duodenal villi and those fed diet with 200 ppm propolis extract had higher jejunal villi (P ＜ 0.05) at 10 weeks of age. The results indicated that ducks fed diets with or without propolis extract had similar feed intake and growth performances. The fat pad weight of ducks fed propolis extract had a trend to be lower at 7 weeks of age. The dietary supplementation of propolis extract also changed the morphology of intestinal villi in ducks at 10 weeks of age.