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題 名 | 乾式滾筒壓碎高粱顆粒度與表面積對飼料粉碎效率與生長肥育豬生長性能之影響 |
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作 者 | 吳繼芳; 鄭清森; 游義德; | 書刊名 | 中華農學會報 |
卷 期 | 138 1987.06[民76.06] |
頁 次 | 頁87-95 |
分類號 | 437.111 |
關鍵詞 | 乾式滾筒; 高粱; 顆粒度; 表面積; 飼料; 粉碎效率; 生長肥育豬; 生長性能; |
語 文 | 中文(Chinese) |
中文摘要 | 為了探討使用乾式滾筒壓碎機壓碎高粱不同顆粒度與表面積對飼料粉碎效率與生長肥育豬生長性能之影響,特選用48頭體重為20.2 kg雜交豬進行本試驗,並按體重與性別逢機分配至各處理與重複。每處理有4欄,每欄飼豬4頭。飼料以高粱、大豆粕為主之生長肥育豬配方,含0.75%離胺酸,0.8%鈣與0.7%磷。三個不同試驗處理使用雙對乾式滾筒壓碎機,其底層一對滾筒間隙距離分別為:(1)0.254 mm;(2)0.762 mm與(3)1.524 mm而形成。 不論高粱原料或飼料之顆粒直徑,隨著壓碎底層一對滾筒間隙距離增大而增加。幾何學上標準機差與表面積,則隨著壓碎顆粒增大而降低。而生產率,粉碎效率與真效率則隨著壓碎顆粒度增大而效率增加。 豬隻平均隻日增重各處理之間差異不顯著(P>0.05),不受飼料顆粒直徑或表面積的影響。隻日飼料攝食量各處理之間差異顯著(P<0.05),隨著飼料顆粒直徑增大而增加。而飼料利用效率各處理之間差異不顯著(P>0.05)。 豬隻之屠宰率,屠體長度,平均背脂厚度與腰眼面積,各處理之間差異不顯著(P>0.05)。而豬隻胃潰瘍發生率,各處理之間差異也不顯著(P>0.05)。 本試驗結果顯示高粱原料使用乾式滾筒壓碎機,提高飼料顆粒之平均直徑為1,800µm或降低表面積為26cm²/g對生長肥育豬生長成績,屠體性能與胃潰瘍發生率無不良的影響。但在飼料製造過程中壓碎高粱之粉碎效率,顆粒直徑1,800µm處理組比顆粒直徑1,400µm與1,000µm處理組分別增加29%與113%。因此本試驗結果證實生長肥育豬飼料中高粱原料壓碎顆粒之平均直徑應提高為1,800µm,以達到三組處理中最大效率與增加養豬業者與飼料製造經營者的收益。 |
英文摘要 | A feeding trial was conducted to evaluate the effect of particle size and surface area of dry rolling of sorghum grain on the grinding efficiency and performance of growing-finishing pigs. Forty-eight crossbred pigs averaging 20.2 kg. each were randomly assigned to pens with replication based on weight and sex. Each pen housed 4 pigs, with four pens per treatment. The sorghum grain-soybean diets were formulated to contain 0.75% lysine, 0.8% calcium and 0.7% phosphorus. The three treatments were sorghum grain ground with the two-pair roller mill using three bottom roll spacings of: (1) 0.254 mm; (2) 0.762 mm and (3) 1.524 mm. Particle size diameter increased as bottom rolling spacing increased, regardless of sorghum grain or sorghum grain diets. The geometric standard deviation and surface area decreased as particle size increased, regardless of sorghum grain or sorghum grain diets. The production rate, grinding efficiency, and true efficiency increased as particle size increased. The average daily gain was not influenced (P>0.05) by particle size or surface area. Feed intake tended to increase (P<0.05) as particle size increased. No significant differences (P>0.05) in feed efficiency were noted among dietary treatments. The dressing percentages, carcass length, mean backfat thickness, and Ioin eye area were not influenced (P>0.05) by particle size. The incidence of ulceration in the esophageal region of the stomach of growing-finishing pigs also showed no significant difference (P>0.05) among dietary treatments. Based on these results, there appear to be no detrimental effects on the performance, carcass characteristics, and incidence of ulceration in the esophageal region of the stomach of growing-finishing pigs by increasing dietary particle size or decreasing dietary surface area using dry rolling. However, the grinding efficiency for a particle size of 1800 µm in diameter was 27% and 113% higher than for particle sizes of 1400 µm and 1000 µm in diameter, in feed manufacturing operations. The results indicated that particle size should be increased in diameter to 1800 µm for grinding sorghum grain using dry rolling in the diets of growing-finishing pigs in order to maximize efficiency and increase the benefits to pig producers and feed manufacturers. |
本系統中英文摘要資訊取自各篇刊載內容。