【摘要】：旨在研究添加酶制劑和膨化處理對生長豬飼糧中脫脂米糠概略養(yǎng)分和礦物質(zhì)在回腸末端及全消化道表觀消化率的影響。試驗選取4頭在回腸末端安裝T型瘺管的杜×長×大三元雜交閹公豬,初始體重為(18±1.5)kg。飼喂按2×2因子設(shè)計的脫脂米糠、脫脂米糠+酶制劑、膨化脫脂米糠和膨化脫脂米糠+酶制劑4種飼糧,按4×4拉丁方試驗安排分4個周期進行消化試驗,每個周期10 d。結(jié)果表明:(1)在回腸末端,添加酶制劑顯著提高了干物質(zhì)、總能、Fe和Zn的表觀消化率(P0.05),且極顯著地提高了粗蛋白、灰分、植酸磷、P和Ca的表觀消化率(P0.01);膨化處理顯著提高了Fe的表觀消化率(P0.05),且極顯著地提高了植酸磷的表觀消化率(P0.01),但顯著降低了干物質(zhì)、有機物和粗脂肪表觀消化率(P0.05),且極顯著地降低了總能表觀消化率(P0.01)。(2)在全消化道,添加酶制劑顯著提高了Cu的表觀消化率(P0.05),且極顯著地提高了灰分、P、Ca和Zn的表觀消化率(P0.01);膨化處理顯著降低了粗蛋白和粗脂肪的表觀消化率(P0.05),且極顯著地降低了干物質(zhì)、有機物、總能、P和Ca的表觀消化率(P0.01)。綜上所述,生長豬脫脂米糠飼糧中添加酶制劑可以改善養(yǎng)分和礦物質(zhì)消化率,尤其是在回腸之前;而除礦物質(zhì)外,膨化處理對米糠飼糧的大多數(shù)概略養(yǎng)分消化率有負面影響,兩種處理方法對米糠養(yǎng)分的消化利用未顯示出協(xié)同效果。
[Abstract]:The aim of this study was to study the effects of enzyme preparation and expansion treatment on the apparent digestibility of defatted rice bran in the diets of growing pigs at the end of ileum and the whole digestive tract. In this experiment, 4 脳 10 脳 10 脳 3 D crossbred boars with T-type fistula at the end of ileum were selected. The initial body weight was (18 鹵1. 5) kg.. Four diets were fed with defatted rice bran, defatted rice bran enzyme, expanded defatted rice bran and expanded defatted rice bran enzyme designed according to 2 脳 2 factor. The results showed that: (1) at the end of ileum, the total energy, the apparent digestibility of Fe and Zn, and the crude protein and ash content were significantly increased by adding enzyme. The apparent digestibility of phosphorus phytate, P and Ca (P0.01), the apparent digestibility of Fe (P0.05) and the apparent digestibility of phosphorus phytate (P0.01) were significantly increased (P0.01), but the dry matter decreased significantly. The apparent digestibility of organic matter and crude fat (P0.05) significantly decreased the apparent digestibility of total energy (P0.01). (2) in the whole digestive tract. The apparent digestibility of Cu was significantly increased by adding enzyme (P0.05), and the apparent digestibility of Zn and Ca was significantly increased (P0.01), the apparent digestibility of crude protein and crude fat was significantly decreased (P0.05), and that of dry matter and organic matter was significantly decreased by expanding treatment. Total energy, apparent digestibility of P and Ca (P0.01). In conclusion, the addition of enzyme to the diet of skim rice bran in growing pigs can improve the digestibility of nutrients and minerals, especially before the ileum, and, with the exception of minerals, the expanded treatment has a negative effect on the digestibility of most of the approximate nutrients in rice bran diets. The two treatments showed no synergistic effect on nutrient digestion and utilization of rice bran.
【作者單位】： 南京農(nóng)業(yè)大學動物科技學院;
【基金】：國家自然科學基金項目(31172237)
【分類號】：S828.5

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