【摘要】：本試驗旨在研究篩片孔徑、調(diào)質(zhì)溫度、�？字睆降牟煌に噮�(shù)組合對肉雞顆粒飼料加工質(zhì)量、生長性能和養(yǎng)分表觀消化率的影響。以玉米-豆粕型全價配合飼料為肉雞試驗飼糧,在相同配方及�？组L徑比一致的條件下,設(shè)計3因素2水平(篩片孔徑:2.0和2.5 mm;調(diào)質(zhì)溫度:70和80℃;模孔直徑:3和4 mm)的肉雞顆粒飼料加工試驗,選用864只1日齡愛拔益加(AA)肉仔雞,隨機分為8個處理,每個處理6個重復(fù),每個重復(fù)18只雞。飼養(yǎng)試驗共42 d,分1~21日齡和22~42日齡2個階段。結(jié)果表明:1)篩片孔徑和�？字睆降慕换プ饔靡约罢{(diào)質(zhì)溫度和�？字睆降慕换プ饔脤︻w粒硬度有極顯著影響(P0.01),調(diào)質(zhì)溫度和�？字睆降慕换プ饔谩⒑Y片孔徑和調(diào)質(zhì)溫度的交互作用以及篩片孔徑、調(diào)質(zhì)溫度和�？字睆降慕换プ饔脤︻w粒耐久性有極顯著影響(P0.01),篩片孔徑和�？字睆降慕换プ饔脤︻w粒耐久性有顯著影響(P0.05)。2)調(diào)質(zhì)溫度對1~21日齡肉雞末重、平均日增重和平均日采食量有極顯著影響(P0.01),對22~42日齡肉雞末重有極顯著影響(P0.01)。3)肉雞1~21日齡,篩片孔徑、調(diào)質(zhì)溫度以及2因素的交互作用對肉雞養(yǎng)分表觀消化率的影響不顯著(P0.05);肉雞22~42日齡,篩片孔徑、調(diào)質(zhì)溫度和�？字睆降慕换プ饔脤θ怆u干物質(zhì)、能量和粗蛋白質(zhì)表觀消化率有極顯著影響(P0.01)。綜合得出:相同篩片孔徑和�？字睆较�,顆粒硬度和耐久性隨調(diào)質(zhì)溫度升高有增大趨勢;相同篩片孔徑和調(diào)質(zhì)溫度下,顆粒硬度和耐久性隨�？字睆降脑龃笥薪档挖厔�;肉雞1~21日齡,篩片孔徑選擇2.0和2.5 mm均可,調(diào)質(zhì)溫度為70℃時肉雞的生長性能極顯著高于80℃時,且料重比顯著低于80℃時;肉雞22~42日齡,當篩片孔徑為2.0或2.5 mm、調(diào)質(zhì)溫度為70℃、�？字睆綖�4.0 mm時肉雞生長性能較高、料重比較低;肉雞1~42日齡,當篩片孔徑為2.0或2.5 mm、調(diào)質(zhì)溫度為70℃、�？字睆綖�4.0 mm時肉雞的生長性能較高、料重比較低;當篩片孔徑為2.5 mm、調(diào)質(zhì)溫度為80℃時,1~21日齡肉雞干物質(zhì)、能量和粗蛋白質(zhì)表觀消化率較高;當篩片孔徑為2.5 mm、調(diào)質(zhì)溫度為70℃、模孔直徑為4.0 mm時,22~42日齡肉雞干物質(zhì)、能量和粗蛋白質(zhì)表觀消化率最高。
[Abstract]:The purpose of this experiment was to study the effects of different technological parameters, such as screen pore size, conditioning temperature and mold hole diameter, on the processing quality, growth performance and apparent digestibility of nutrients in broilers. The corn-soybean meal full price feed was used as the experimental diet for broilers. Under the same formula and the same ratio of hole length to diameter, three factors and two levels (screen pore size: 2.0 and 2.5 mm; conditioning temperature: 70 鈩，

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