动物营养学报
動物營養學報
동물영양학보
ACTA ZOONUTRIMENTA SINICA
2014年
6期
1453-1466
,共14页
林厦菁%周桂莲%蒋守群%蒋宗勇%郑春田%陈芳%苟钟勇%李龙
林廈菁%週桂蓮%蔣守群%蔣宗勇%鄭春田%陳芳%茍鐘勇%李龍
림하정%주계련%장수군%장종용%정춘전%진방%구종용%리룡
黄羽肉鸡%粗蛋白质%需要量%胴体品质%生长性能%蛋白质沉积率
黃羽肉鷄%粗蛋白質%需要量%胴體品質%生長性能%蛋白質沉積率
황우육계%조단백질%수요량%동체품질%생장성능%단백질침적솔
yellow broilers%CP%requirement%carcass quality%growth performance%protein retention
本试验旨在研究饲粮粗蛋白质水平对22~42日龄和43~63日龄2个阶段黄羽肉鸡生长性能、胴体品质、蛋白质沉积率和血液生化指标的影响,探讨快大型黄羽肉鸡饲养中、后期的粗蛋白质营养需要量。选用22、43日龄岭南黄羽肉鸡各1600只,每阶段采用2(性别)×5(粗蛋白质水平)因子试验设计,共设10个组,每组4个重复,每重复40只鸡。22~42日龄各组饲粮粗蛋白质水平分别为16.0%、17.5%、19.0%、20.5%、22.0%,43~63日龄各组粗蛋白质水平分别为14.0%、15.5%、17.0%、18.5%、20.0%,每阶段试验期均为21 d。结果表明,22~42日龄:1)饲粮粗蛋白质水平显著影响母鸡平均日采食量、公鸡平均日增重和料重比(P<0.05);2)饲粮粗蛋白质水平对公、母鸡腹脂率、胸肌率、腿肌率有显著(P<0.05)或极显著(P<0.01)影响;3)饲粮粗蛋白质水平对公、母鸡血清胆固醇、甘油三酯和尿酸含量及蛋白质沉积率也有显著( P<0.05)或极显著(P<0.01)影响。43~63日龄:1)饲粮粗蛋白质水平对公、母鸡平均日采食量、平均日增重、粗蛋白质摄入量以及公鸡料重比有极显著影响( P<0.01);2)饲粮粗蛋白质水平不同,各组间公鸡胴体品质(腹脂率、胸肌率、腿肌率)差异显著( P<0.05),母鸡腿肌率差异极显著( P<0.01);3)饲粮粗蛋白质水平对公、母鸡蛋白质沉积率有极显著影响( P<0.01),对血清胆固醇、甘油三酯和尿酸含量也有显著(P<0.05)或极显著(P<0.01)影响。综合所有数据及回归分析结果,22~42日龄母鸡推荐粗蛋白质水平为19.00%~19.23%,公鸡推荐粗蛋白质水平为19.00%~19.41%;43~63日龄母鸡推荐粗蛋白质水平为17.00%~17.28%,公鸡推荐粗蛋白质水平为17.00%~18.50%。
本試驗旨在研究飼糧粗蛋白質水平對22~42日齡和43~63日齡2箇階段黃羽肉鷄生長性能、胴體品質、蛋白質沉積率和血液生化指標的影響,探討快大型黃羽肉鷄飼養中、後期的粗蛋白質營養需要量。選用22、43日齡嶺南黃羽肉鷄各1600隻,每階段採用2(性彆)×5(粗蛋白質水平)因子試驗設計,共設10箇組,每組4箇重複,每重複40隻鷄。22~42日齡各組飼糧粗蛋白質水平分彆為16.0%、17.5%、19.0%、20.5%、22.0%,43~63日齡各組粗蛋白質水平分彆為14.0%、15.5%、17.0%、18.5%、20.0%,每階段試驗期均為21 d。結果錶明,22~42日齡:1)飼糧粗蛋白質水平顯著影響母鷄平均日採食量、公鷄平均日增重和料重比(P<0.05);2)飼糧粗蛋白質水平對公、母鷄腹脂率、胸肌率、腿肌率有顯著(P<0.05)或極顯著(P<0.01)影響;3)飼糧粗蛋白質水平對公、母鷄血清膽固醇、甘油三酯和尿痠含量及蛋白質沉積率也有顯著( P<0.05)或極顯著(P<0.01)影響。43~63日齡:1)飼糧粗蛋白質水平對公、母鷄平均日採食量、平均日增重、粗蛋白質攝入量以及公鷄料重比有極顯著影響( P<0.01);2)飼糧粗蛋白質水平不同,各組間公鷄胴體品質(腹脂率、胸肌率、腿肌率)差異顯著( P<0.05),母鷄腿肌率差異極顯著( P<0.01);3)飼糧粗蛋白質水平對公、母鷄蛋白質沉積率有極顯著影響( P<0.01),對血清膽固醇、甘油三酯和尿痠含量也有顯著(P<0.05)或極顯著(P<0.01)影響。綜閤所有數據及迴歸分析結果,22~42日齡母鷄推薦粗蛋白質水平為19.00%~19.23%,公鷄推薦粗蛋白質水平為19.00%~19.41%;43~63日齡母鷄推薦粗蛋白質水平為17.00%~17.28%,公鷄推薦粗蛋白質水平為17.00%~18.50%。
본시험지재연구사량조단백질수평대22~42일령화43~63일령2개계단황우육계생장성능、동체품질、단백질침적솔화혈액생화지표적영향,탐토쾌대형황우육계사양중、후기적조단백질영양수요량。선용22、43일령령남황우육계각1600지,매계단채용2(성별)×5(조단백질수평)인자시험설계,공설10개조,매조4개중복,매중복40지계。22~42일령각조사량조단백질수평분별위16.0%、17.5%、19.0%、20.5%、22.0%,43~63일령각조조단백질수평분별위14.0%、15.5%、17.0%、18.5%、20.0%,매계단시험기균위21 d。결과표명,22~42일령:1)사량조단백질수평현저영향모계평균일채식량、공계평균일증중화료중비(P<0.05);2)사량조단백질수평대공、모계복지솔、흉기솔、퇴기솔유현저(P<0.05)혹겁현저(P<0.01)영향;3)사량조단백질수평대공、모계혈청담고순、감유삼지화뇨산함량급단백질침적솔야유현저( P<0.05)혹겁현저(P<0.01)영향。43~63일령:1)사량조단백질수평대공、모계평균일채식량、평균일증중、조단백질섭입량이급공계료중비유겁현저영향( P<0.01);2)사량조단백질수평불동,각조간공계동체품질(복지솔、흉기솔、퇴기솔)차이현저( P<0.05),모계퇴기솔차이겁현저( P<0.01);3)사량조단백질수평대공、모계단백질침적솔유겁현저영향( P<0.01),대혈청담고순、감유삼지화뇨산함량야유현저(P<0.05)혹겁현저(P<0.01)영향。종합소유수거급회귀분석결과,22~42일령모계추천조단백질수평위19.00%~19.23%,공계추천조단백질수평위19.00%~19.41%;43~63일령모계추천조단백질수평위17.00%~17.28%,공계추천조단백질수평위17.00%~18.50%。
This experiment was conducted to investigate dietary crude protein(CP)level on growth perform-ance,carcass quality,rate of protein retention and blood biochemical indices in broilers aged from 22 to 42 and 43 to 63 days of age. For both the earlier and later phases,a factorial arrangement was used to assess effects of sex(equal numbers of each)and CP level(16.0%,17.5%,19.0%,20.5% and 22.0% for 21 to 42 days of age;14.0%,15.5%,17.0%,18.5% and 20.0% for 43 to 63 days of age). The experiment involved 4 repli-cates of 40 chickens of each sex and CP level in each growth phase(a total of 3 200 birds). Birds from each replicate was blood sampled and slaughtered to determine effects of CP on blood indices and carcass composi-tion. The corn-soybean meal diets were formulated with different level corn,soybean meal and palm oil to make the 10 diets. The results showed as follows:at 22 to 42 days of age,1)dietary CP levels significantly affected average daily feed intake(ADFI)of female broilers,average daily gain( ADG)and feed / gain( F /G)of male broilers(P<0.05);2)dietary CP levels significantly affected the percentages of thigh muscle,ab-dominal fat and breast muscle of both sexes( P<0.05 or P<0.01);3)dietary CP levels significantly influ-enced the content of triglyceride(TG),cholesterol(CHO),uric acid(UA)in serum and CP deposition of both sexes(P<0.05 or P<0.01). At 43 to 63 days of age,1)dietary CP levels significantly influenced ADFI, ADG and CP intake of both sexes,and F / G of the males(P<0.01);2)there was a striking effect of dietary CP levels on carcass quality(the percentages of thigh muscle,abdominal fat and breast muscle)of males(P<0.05),and also significantly influenced thigh muscle percentage of females( P<0.01);3)dietary CP levels significantly affected rate of protein deposition(P<0.05)and the contents of TG,CHO and UA in both sexes (P<0.05 or P<0.01). In conclusion,on the basis of all criteria considered and the estimated results of regres-sion analysis,the CP requirement of female yellow broilers at 21 and 42 days of age is 19.00% to 19.23% and the CP requirement of female yellow broilers is 19.00% to 19.41%. For 43 to 63 days of age,the CP require-ment of female yellow broilers is 17.00% to 17.28% and the CP requirement of male yellow broilers is 17.00%to 18.50%.