本文選題：料量限飼 + 能量限飼��； 參考：《動物營養(yǎng)學報》2017年09期

【摘要】：本試驗旨在研究不同限飼方法對愛拔益加(AA)肉雞生長性能、屠宰性能及骨骼性狀的影響。試驗選用80只7日齡的AA肉雞,隨機分成4組:對照組、料量限飼組、能量限飼組和蛋白質(zhì)限飼組,每組20只雞。限飼14d(21日齡)、補償生長21d(42日齡)后每組分別屠宰8只,取其胸肌、腿肌、腹脂、心臟、肝臟、脾臟、胸腺、法氏囊、骨骼等組織并稱重,以及測量骨骼的長度和直徑。結(jié)果表明:1)限飼后,3個限飼組肉雞的平均日增重顯著低于對照組(P0.05)。補償生長后,各組肉雞的平均日采食量、平均日增重和料重比均差異不顯著(P0.05),但料量限飼組末重顯著低于對照組(P0.05)。2)限飼后,料量限飼組肉雞的全凈膛率、半凈膛率、胸肌率、腿肌率和腹脂率顯著低于對照組(P0.05),料量限飼組、能量限飼組肉雞的腹脂率顯著低于蛋白質(zhì)限飼組和對照組(P0.05)。補償生長后,各組肉雞的胸肌率和腿肌率均無顯著差異(P0.05),但料量限飼組肉雞的腹脂率顯著高于對照組(P0.05)。3)限飼后,蛋白質(zhì)限飼組肉雞的肝臟指數(shù)顯著高于其他3組(P0.05),料量限飼組肉雞的胰臟指數(shù)顯著高于其他3組(P0.05);對照組脾臟指數(shù)顯著高于其他3組(P0.05)。補償生長后,各組肉雞的心臟指數(shù)、肝臟指數(shù)、胰臟指數(shù)、脾臟指數(shù)、胸腺指數(shù)和法氏囊指數(shù)均無顯著差異(P0.05)。4)限飼后,料量限飼組肉雞的脛骨重、脛骨長、脛骨直徑、股骨重和股骨長顯著低于其他3組(P0.05),料量限飼組、能量限飼組肉雞的股骨直徑顯著低于對照組和蛋白質(zhì)限飼組(P0.05)。補償生長后,各組肉雞的脛骨重、脛骨長、脛骨直徑、股骨重、股骨長和股骨直徑均無顯著差異(P0.05)。由此可見,3種限飼方法均降低了AA肉雞的平均日增重和部分骨骼性狀指標,其中料量限飼法對肉雞平均日增重和骨骼性狀影響最大。經(jīng)過21d的補償生長后,3種個限飼組均表現(xiàn)出補償生長效應,骨骼性狀無顯著變化,但料量限飼法會降低肉雞全期的平均日增重和末重,建議生產(chǎn)中慎用料量限飼法。
[Abstract]:The purpose of this study was to study the effects of different feeding restriction methods on growth performance, slaughter performance and bone traits of Aiba Yijia AAA broilers. 80 AA broilers aged 7 days were randomly divided into 4 groups: control group, feed restriction group, energy restriction group and protein restriction group, with 20 chickens in each group. Eight rats were slaughtered in each group after feeding 14d(21 for days (compensatory growth day). The tissues of pectoralis muscle, leg muscle, abdominal fat, heart, liver, spleen, thymus, bursa of Fabricius and bone were weighed, and the length and diameter of bone were measured. The results showed that the average daily gain (ADG) of the three groups was significantly lower than that of the control group (P 0.05). After compensatory growth, there was no significant difference in average daily intake, average daily gain and feed weight ratio among the three groups, but the end weight of the feed restriction group was significantly lower than that of the control group (P0.05 路2). The percentage of leg muscle and abdominal fat was significantly lower than that of the control group (P 0.05), and that of the group fed with energy was significantly lower than that of the group fed with protein and the control group (P 0.05). After compensatory growth, there was no significant difference in pectoralis rate and leg muscle rate among the three groups, but the abdominal fat rate of the broilers in the feed restriction group was significantly higher than that in the control group (P0.05 路3). The liver index of the broilers fed with protein was significantly higher than that of the other three groups, the pancreatic index of the broilers in the feed restriction group was significantly higher than that in the other three groups, and the spleen index in the control group was significantly higher than that in the other three groups. After compensatory growth, there was no significant difference in heart index, liver index, pancreas index, spleen index, thymus index and bursa of Fabricius index between groups. The femoral weight and length of femur were significantly lower than those of the other three groups (P 0.05). The femur diameter in the energy restriction group was significantly lower than that in the control group and the protein limited feeding group (P 0.05), while that in the energy limited feeding group was significantly lower than that in the other three groups. After compensatory growth, there was no significant difference in tibia weight, tibia length, tibia diameter, femur weight, femur length and femoral diameter in each group. It can be seen that the average daily gain and some bone traits of AA broilers were reduced by the three methods, among which the feed restriction method had the greatest effect on the average daily gain and bone traits of the broilers. After 21 days of compensatory growth, all the three groups showed compensatory growth effect, but no significant change in bone traits. However, the feed restriction method could reduce the average daily gain and end weight of broilers during the whole period. It was suggested that the method of feed restriction should be used with caution in production.
【作者單位】： 河南農(nóng)業(yè)大學飼料營養(yǎng)河南省工程實驗室河南農(nóng)業(yè)大學國家家養(yǎng)動物種質(zhì)資源平臺;
【基金】：國家自然科學基金(31372329)
【分類號】：S831.5

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