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| β-羟基β-甲基丁酸钙对肉仔鸡生长性能、屠宰性能和血液激素的影响 | |
| 引用本文： | 乔璇,岳洪源,计峰,武书庚,齐广海,冯定远,张海军.β-羟基β-甲基丁酸钙对肉仔鸡生长性能、屠宰性能和血液激素的影响[J].中国畜牧兽医,2011,38(8):5-9. |
| 作者姓名： | 乔璇 岳洪源 计峰 武书庚 齐广海 冯定远 张海军 |
| 作者单位： | 1. 中国农业科学院饲料研究所,北京 100081;华南农业大学动物科学学院,广东广州 510642 2. 中国农业科学院饲料研究所,北京,100081 3. 华南农业大学动物科学学院,广东广州,510642 |
| 摘 要： | 试验旨在探讨日粮中β-羟基β-甲基丁酸钙(HMB-Ca)对肉仔鸡生长性能、屠宰性能和血液激素变化的影响。选用刚出雏的雄性肉雏鸡600只,随机分配到5个处理组(每组6个重复,每重复20只鸡),分别饲喂HMB-Ca添加量为0 (对照组)、0.05%、0.1%、0.15%和0.2% 的日粮,试验期42 d。测定1~21、22~42 、1~42 d的平均日增重、平均采食量和料重比,42 d的屠宰性能及21 、42 d血清激素含量。结果表明,各组间肉鸡的平均日增重、平均日采食量和料重比均无显著差异(P＞0.05),但后期和全期均以0.1% HMB-Ca组为最佳;42 d时,0.1% HMB-Ca显著提高肉鸡胸肌率(P＜0.05),同时该处理也有提高腿肌率的趋势(P＞0.05);42 d时,0.05%以上 HMB-Ca组胰岛素含量均显著高于对照组(P＜0.05),以0.1%添加水平为最高;低剂量HMB-Ca(0.05%)组生长激素水平显著高于高剂量HMB-Ca组(0.15%和0.2%)(P＜0.05)。综上可知,HMB-Ca可促进肉仔鸡胸肌的生长发育,提高血清中胰岛素含量;肉仔鸡日粮中适宜的HMB-Ca添加水平为0.1%。 |
| 关 键 词： | 肉仔鸡 β-羟基β-甲基丁酸钙 生长性能 屠宰性能 血液激素 |
| 收稿时间： | 2010-12-27 |
Effects of Beta-Hydroxy-Beta-Methyl-Butyrate Calcium on Growth Performance,Slaughter Trait and Serum Hormones in Broiler Chickens |
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| QIAO Xuan,YUE Hong-yuan,JI Feng,WU Shu-geng,QI Guang-hai,FENG Ding-yuan,ZHANG Hai-jun.Effects of Beta-Hydroxy-Beta-Methyl-Butyrate Calcium on Growth Performance,Slaughter Trait and Serum Hormones in Broiler Chickens[J].China Animal Husbandry & Veterinary Medicine,2011,38(8):5-9. | |
| Authors: | QIAO Xuan YUE Hong-yuan JI Feng WU Shu-geng QI Guang-hai FENG Ding-yuan ZHANG Hai-jun |
| Institution: | 1. Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081,China;2. College of Animal Science, South China Agricultural University, Guangzhou 510642,China |
| Abstract: | The purpose of this experiment was to investigate the effects of dietary beta-hydroxy-beta-methyl-butyrate calcium (HMB-Ca) on growth performance, slaughter trait and blood hormones in broiler chickens. Six hundred day-old Arbor Acres (AA) chickens were randomly divided into five groups with six replicates of twenty chickens and fed different levels of HMB-Ca ( 0 (control group) ,0.05%,0.1%,0.15% and 0.2%) in the diet respectively. The experiment lasted 42 d. Growth performance including average daily weight gain (ADG), average daily feed intake (ADFI), feed to gain ratio (F/G) during 1 to 21 d, 22 to 42 d, 1 to 42 d, slaughter trait at 42 d and serum hormones at the age of 21,42 d were determined. The results showed that, compared with the control, there were no significant differences on ADG,ADFI and F/G by adding different levels of HMB-Ca during the experiment (P＞0.05), and dietary 0.1% HMB-Ca ameliorated the F/G in 22 to 42 d and 1 to 42 d; chicks fed 0.1% HMB-Ca diet had significant increased breast muscle rate (P＞0.05), and also had the trend of increasing leg muscle rate; At 42 d of age ,chicks in the groups of HMB-Ca adding level above 0.05% had significant higher serum insulin level compared to the controls (P＞0.05), and those in 0.1% HMB-Ca group was the highest. Serum GH level was higher in lower (0.05%) HMB-Ca level group than those in higher (0.15%, 0.2%) HMB-Ca levels(P<0.05). In conclusion, appropriate dietary HMB-Ca could enhance the breast muscle rate and serum insulin level, and it seemed that the 0.1% inclusion level was recommended in production. |
| Keywords: | broiler chickens HMB-Ca growth performance slaughter trait serum hormones |
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