代謝能和粗蛋白水平對(duì)科寶肉雞生長(zhǎng)性能、屠宰性能及養(yǎng)分表觀代謝率的影響
發(fā)布時(shí)間：2018-11-16 08:08
【摘要】：本試驗(yàn)旨在通過二次回歸正交旋轉(zhuǎn)組合設(shè)計(jì),通過不同水平代謝能和粗蛋白組合對(duì)科寶肉雞生產(chǎn)性能、屠宰性能、養(yǎng)分表觀代謝率和腸道消化酶活性以及血清生化指標(biāo)的影響,確定不同階段肉雞飼糧代謝能和粗蛋白水平的最佳組合,為肉雞精細(xì)營(yíng)養(yǎng)及標(biāo)準(zhǔn)化高效養(yǎng)殖提供理論依據(jù)。試驗(yàn)采用二因子二次回歸正交旋轉(zhuǎn)組合設(shè)計(jì),以代謝能和粗蛋白為兩個(gè)試驗(yàn)因子,結(jié)合肉雞生長(zhǎng)性能和屠宰性能等建立回歸方程,通過擬合得到其目標(biāo)方程的最佳參數(shù),并就各試驗(yàn)測(cè)定指標(biāo)對(duì)優(yōu)化值的影響進(jìn)行分析。試驗(yàn)分為兩個(gè)階段:0-21d為第一階段,選取1日齡,健康、體重接近的科寶肉雞480只,隨機(jī)分成12個(gè)組,每個(gè)組4個(gè)重復(fù),每個(gè)重復(fù)10只雞,公母各半;22-42d為第二階段,分組同第一階段。試驗(yàn)飼糧為玉米-豆粕型,其中1-8組為試驗(yàn)組,9-12組為中心組(即零水平組),中心組設(shè)定為4個(gè)組,中心組飼糧營(yíng)養(yǎng)水平相同,用來保持二次回歸正交旋轉(zhuǎn)組合的設(shè)計(jì)旋轉(zhuǎn)性的穩(wěn)定性。中心組飼糧水平代謝能和粗蛋白水平分別為:1-21 d:12.4 MJ/kg,21%;22-42 d:12.8 MJ/kg,20%;其它各試驗(yàn)組根據(jù)二次回歸正交旋轉(zhuǎn)組合設(shè)計(jì)參數(shù)表,設(shè)定飼糧代謝能(ME)和粗蛋白(CP)水平。試驗(yàn)結(jié)果表明:(1)1-21d科寶肉雞:飼糧中適宜的代謝能和粗蛋白水平可顯著改善1-21d肉仔雞的平均日增重、料重比、胸肌率、腿肌率并降低腹脂率(P0.05),顯著提高飼糧粗脂肪、粗蛋白的表觀代謝率(P0.05),提高腸道胰蛋白酶活性(P0.05),提高血清中葡萄糖和白蛋白的含量(P0.05),降低甘油三酯和尿酸的含量(P0.05)。響應(yīng)面圖和回歸分析顯示,當(dāng)飼糧代謝能水平為10.05~12.40MJ/kg時(shí),隨著粗蛋白水平的上升。平均日增重逐漸增大,粗蛋白水平進(jìn)一步增加,對(duì)于ADG影響逐漸變小。ME:CP為11.80MJ/kg:22.85%時(shí),平均日采食量最大;ME:CP為12.15MJ/kg:20.65%時(shí),料重比最小為1.65;ME和CP分別在12.05~12.15MJ/kg和20.85%~21.25%時(shí),可以獲得較高的胸肌率和腿肌率,同時(shí)腹脂率較低。(2)22-42d:飼糧中適宜的代謝能和粗蛋白水平可顯著改善22-42d肉仔雞的平均日增重、料重比(P0.05),改善肉雞胸肌、腿肌率并降低腹脂率(P0.05),顯著提高對(duì)飼糧粗蛋白和粗脂肪的表觀代謝率(P0.05),顯著提高腸道脂肪酶和胰蛋白酶的活性(P0.05),提高血清中葡萄糖、甘油三酯和尿酸的含量(P0.05)。非線性回歸分析及響應(yīng)面圖顯示,當(dāng)CP在20.00%左右時(shí),ME為10.80MJ/kg~12.80MJ/kg時(shí),平均日增重處于較高水平,但當(dāng)ME為14.21 MJ/kg~14.80 MJ/kg時(shí),平均日增重有下降趨勢(shì);當(dāng)ME和CP為12.70 MJ/kg,19.78%時(shí),可達(dá)到最大平均日采食量;當(dāng)ME和CP為12.65 MJ/kg,20.16%時(shí),料重比最小為1.95;ME和CP分別為12.68MJ/kg和20.15%時(shí),可獲得理論上最大的胸肌率;ME和CP分別為12.75MJ/kg和20.10%時(shí)獲得較好腿肌率;ME和CP為12.70MJ/kg和19.55%時(shí),腹脂沉積率最低。綜上所述,飼糧中適宜的代謝能和粗蛋白水平可以顯著改善科寶肉雞生產(chǎn)性能和屠宰性能,提高營(yíng)養(yǎng)物質(zhì)表觀代謝率,增強(qiáng)腸道消化酶活性,并對(duì)血清中各生化指標(biāo)起到平衡作用.在本試驗(yàn)條件下,不同階段科寶肉雞飼糧代謝能和粗蛋白水平建議為:1-21d:代謝能:12.05~12.35 MJ/kg,粗蛋白:20.85%~21.25%;22-42d:代謝能:12.68~12.95MJ/kg,粗蛋白:19.78%~20.15%。
[Abstract]:The purpose of this test is to design the performance, the slaughter performance, the apparent metabolic rate of the nutrients and the activity of the intestinal digestive enzyme and the serum biochemical indexes through the quadratic regression orthogonal rotation combination design. the optimal combination of the metabolic energy and the crude protein level of the broiler chickens in different stages is determined, and the theoretical basis is provided for the fine nutrition of the broiler and the standardized and high-efficiency cultivation. in that experiment, a two-factor quadratic regression orthogonal rotation combination design is adopted, the metabolic energy and the crude protein are two test factors, a regression equation is established in combination with the growth performance and the slaughter performance of the broiler, and the optimal parameters of the target equation are obtained through fitting, and the influence of each test measurement index on the optimization value is analyzed. The experiment was divided into two stages: 0-21d was the first stage, and 480 chickens were randomly divided into 12 groups, and each group was divided into 12 groups. The experimental feed was of the maize-soybean meal type, of which 1-8 was the test group, the 9-12 group was the central group (i.e., the zero-level group), the central group was set to 4 groups, the feeding level of the central group was the same, and it was used to maintain the stability of the design and rotation of the quadratic regression orthogonal rotation combination. The horizontal metabolic energy and the crude protein level of the central group were: 1-21 d: 12. 4 MJ/ kg, 21%; 22-42 d: 12. 8 MJ/ kg, 20%; and the other test groups, according to the quadratic regression orthogonal rotation combination design parameter table, set the feed grain metabolic energy (ME) and the crude protein (CP) level. The results showed that: (1) 1-21d Broilers: The appropriate metabolic energy and crude protein level in the feed can significantly improve the average daily gain, the weight ratio, the pectoral muscle rate and the leg muscle rate of the 1-21d broiler, and lower the abdominal fat rate (P0.05), and obviously improve the apparent metabolic rate of the crude protein and the crude protein (P0.05). The activity of the intestinal trypsin was increased (P0.05), and the content of glucose and albumin in the serum was increased (P0.05), and the content of triglyceride and uric acid was decreased (P0.05). The response surface map and the regression analysis show that the level of the crude protein increases with the level of the crude protein when the level of the metabolic energy of the feed is 10.05-12.40MJ/ kg. The average daily gain gradually increased, and the crude protein level further increased, and the effect on the ADG gradually decreased. ME: CP was 11.80MJ/ kg: 22.85%, the average daily feed intake was the most; the ME: CP was 12.15MJ/ kg: 20.65%, the weight ratio was 1.65, ME and CP were 12.05-12.15MJ/ kg and 20.85% -21. 25%, respectively. (2) 22-42d: The appropriate metabolic energy and crude protein level in the feed can significantly improve the average daily gain and the weight ratio of the 22-42d broiler (P0.05), improve the pectoral muscle and leg muscle rate of the broiler and lower the abdominal fat rate (P0.05), and obviously improve the apparent metabolic rate of the coarse protein and the crude fat (P0.05). The activity of the intestinal lipase and the trypsin was significantly increased (P0.05), and the content of glucose, triglyceride and uric acid in the serum was increased (P0.05). The non-linear regression analysis and response surface graph show that, when the CP is about 20. 00%, the average daily gain is at a higher level when the content of the ME is 10.80MJ/ kg-12.80MJ/ kg, but when the ME is 14.21 MJ/ kg to 14.80 MJ/ kg, the average daily gain is decreased; when the ME and the CP are 12.70 MJ/ kg and 19.78%, the maximum average daily feed intake can be achieved; When ME and CP were 12.65 MJ/ kg and 20. 16%, the weight ratio of ME and CP was 1.95, ME and CP were 12.68MJ/ kg and 20.15%, respectively. The best pectoral muscle rate was obtained when ME and CP were 12.75MJ/ kg and 20.10%, respectively. In conclusion, the appropriate metabolic energy and the crude protein level in the feed can significantly improve the production performance and the slaughter performance of the Cough Broilers, increase the apparent metabolic rate of the nutrient substances, enhance the activity of the intestinal digestive enzymes, and play a balance role in the biochemical indexes in the serum. Under the condition of this test, the dietary metabolic energy and crude protein level of the broiler chickens at different stages were as follows: 1-21d: metabolic energy: 12.05-12.35 MJ/ kg, crude protein: 20. 85%-21. 25%; 22-42d: metabolic energy: 12.68-125.95MJ/ kg, crude protein: 19.78%-20. 15%.
【學(xué)位授予單位】：廣東海洋大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：S831.5
本文編號(hào)：2334954
[Abstract]:The purpose of this test is to design the performance, the slaughter performance, the apparent metabolic rate of the nutrients and the activity of the intestinal digestive enzyme and the serum biochemical indexes through the quadratic regression orthogonal rotation combination design. the optimal combination of the metabolic energy and the crude protein level of the broiler chickens in different stages is determined, and the theoretical basis is provided for the fine nutrition of the broiler and the standardized and high-efficiency cultivation. in that experiment, a two-factor quadratic regression orthogonal rotation combination design is adopted, the metabolic energy and the crude protein are two test factors, a regression equation is established in combination with the growth performance and the slaughter performance of the broiler, and the optimal parameters of the target equation are obtained through fitting, and the influence of each test measurement index on the optimization value is analyzed. The experiment was divided into two stages: 0-21d was the first stage, and 480 chickens were randomly divided into 12 groups, and each group was divided into 12 groups. The experimental feed was of the maize-soybean meal type, of which 1-8 was the test group, the 9-12 group was the central group (i.e., the zero-level group), the central group was set to 4 groups, the feeding level of the central group was the same, and it was used to maintain the stability of the design and rotation of the quadratic regression orthogonal rotation combination. The horizontal metabolic energy and the crude protein level of the central group were: 1-21 d: 12. 4 MJ/ kg, 21%; 22-42 d: 12. 8 MJ/ kg, 20%; and the other test groups, according to the quadratic regression orthogonal rotation combination design parameter table, set the feed grain metabolic energy (ME) and the crude protein (CP) level. The results showed that: (1) 1-21d Broilers: The appropriate metabolic energy and crude protein level in the feed can significantly improve the average daily gain, the weight ratio, the pectoral muscle rate and the leg muscle rate of the 1-21d broiler, and lower the abdominal fat rate (P0.05), and obviously improve the apparent metabolic rate of the crude protein and the crude protein (P0.05). The activity of the intestinal trypsin was increased (P0.05), and the content of glucose and albumin in the serum was increased (P0.05), and the content of triglyceride and uric acid was decreased (P0.05). The response surface map and the regression analysis show that the level of the crude protein increases with the level of the crude protein when the level of the metabolic energy of the feed is 10.05-12.40MJ/ kg. The average daily gain gradually increased, and the crude protein level further increased, and the effect on the ADG gradually decreased. ME: CP was 11.80MJ/ kg: 22.85%, the average daily feed intake was the most; the ME: CP was 12.15MJ/ kg: 20.65%, the weight ratio was 1.65, ME and CP were 12.05-12.15MJ/ kg and 20.85% -21. 25%, respectively. (2) 22-42d: The appropriate metabolic energy and crude protein level in the feed can significantly improve the average daily gain and the weight ratio of the 22-42d broiler (P0.05), improve the pectoral muscle and leg muscle rate of the broiler and lower the abdominal fat rate (P0.05), and obviously improve the apparent metabolic rate of the coarse protein and the crude fat (P0.05). The activity of the intestinal lipase and the trypsin was significantly increased (P0.05), and the content of glucose, triglyceride and uric acid in the serum was increased (P0.05). The non-linear regression analysis and response surface graph show that, when the CP is about 20. 00%, the average daily gain is at a higher level when the content of the ME is 10.80MJ/ kg-12.80MJ/ kg, but when the ME is 14.21 MJ/ kg to 14.80 MJ/ kg, the average daily gain is decreased; when the ME and the CP are 12.70 MJ/ kg and 19.78%, the maximum average daily feed intake can be achieved; When ME and CP were 12.65 MJ/ kg and 20. 16%, the weight ratio of ME and CP was 1.95, ME and CP were 12.68MJ/ kg and 20.15%, respectively. The best pectoral muscle rate was obtained when ME and CP were 12.75MJ/ kg and 20.10%, respectively. In conclusion, the appropriate metabolic energy and the crude protein level in the feed can significantly improve the production performance and the slaughter performance of the Cough Broilers, increase the apparent metabolic rate of the nutrient substances, enhance the activity of the intestinal digestive enzymes, and play a balance role in the biochemical indexes in the serum. Under the condition of this test, the dietary metabolic energy and crude protein level of the broiler chickens at different stages were as follows: 1-21d: metabolic energy: 12.05-12.35 MJ/ kg, crude protein: 20. 85%-21. 25%; 22-42d: metabolic energy: 12.68-125.95MJ/ kg, crude protein: 19.78%-20. 15%.
【學(xué)位授予單位】：廣東海洋大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：S831.5
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 王海燕;李富偉;高秀華;;脂肪酶的研究進(jìn)展及其在飼料中的應(yīng)用[J];飼料工業(yè);2007年06期
2 劉艷芬;黃銀姬;黃曉亮;;日糧蛋白質(zhì)水平對(duì)0~3周齡肉雞生產(chǎn)性能和免疫機(jī)能的影響[J];中國畜牧獸醫(yī);2006年03期
3 藺淑琴;李金錄;史兆國;魏時(shí)來;沈禹頤;;日糧不同營(yíng)養(yǎng)水平對(duì)黃羽肉雞屠宰性能及肉品質(zhì)的影響[J];中國畜牧獸醫(yī);2008年08期
4 陳祥林;黃蘭珍;譚本杰;周彥文;;0~6周齡古典型岑溪三黃雞對(duì)能量、蛋白質(zhì)和含硫氨基酸營(yíng)養(yǎng)需要量的研究[J];中國畜牧獸醫(yī);2008年08期
5 王潤(rùn)蓮;汪忠艷;張銳;黎秋平;杜炳旺;;0～6周齡貴妃雞適宜飼糧能量和蛋白質(zhì)水平的研究[J];家禽科學(xué);2013年03期
6 何翔;高振華;孔鵬;林嘉賀;莫子藝;張曉慧;肖曼;;不同能量和粗蛋白水平日糧對(duì)石岐雜雞生產(chǎn)性能、屠宰性能及養(yǎng)分表觀代謝率的影響[J];河南農(nóng)業(yè)科學(xué);2011年12期
7 謝淑芳 ,劉秀云;飼糧不同能量水平對(duì)肉仔雞生產(chǎn)性能的影響[J];黑河科技;2003年01期
8 劉東;李忠;張強(qiáng);;不同能量水平日糧對(duì)肉仔雞生長(zhǎng)及屠宰性能指標(biāo)的影響研究[J];家畜生態(tài)學(xué)報(bào);2005年05期
9 黃明,羅欣;內(nèi)源蛋白酶在肉嫩化中的作用(綜述)[J];肉類研究;1999年02期
10 鄒曉庭;韓友文;吳成坤;;油脂代謝能值的測(cè)定[J];飼料博覽;1992年01期
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