蒲公英水提物对肉仔鸡生长性能及免疫机能影响研究
发布时间：2019-06-10 00:04
【摘要】：本试验旨在探讨蒲公英水提物对肉仔鸡生长性能和免疫机能的影响。选择200只1日龄的爱拔益加(AA)肉仔鸡,随机分为A、B、C、D,4个组,每组5个重复,每个重复10只鸡,A、B、C组分别在基础饲粮中添加0.5%、0.75%、1%蒲公英水提物,这4个组中空白对照组是D组。我一共用42d来做这个试验。定期测定每组肉鸡的生长快慢和其生产性能、免疫器官功能指标和新城疫抗体滴度如何,测定肉仔鸡,胴体优劣、肉质优劣。我们研究不一样的添加剂量的蒲公英水提物对肉仔鸡生产性能和免疫机能的影响。测21日龄和42日龄每只肉鸡的平均日增重、平均日采食量以及料肉比;在试验结束时做肉鸡品质检测及肌肉品质测定;分别在试验的第14d、21d、28d、35d,每组选取5只体重相近的健康鸡进行采血,取宰杀后试验鸡的胸腺、脾脏、法氏囊,用滤纸吸干血液后称重,并计算其免疫器官指数。试验发现:(1)在日粮中添加0.75%的蒲公英水提物添加组平均每天增长体重比对照组增长体重提高了18.6%(P0.01);C组在每天饲喂过程中日粮添加1%,每天吃的饲料和体重增长的比值比对照组的鸡下降了7.8%(P0.05)。(2)各处理组的半净膛率没有明显的差异(P0.05);0.75%、1%添加组的鸡的全净膛率明显的高于对照组鸡的全净膛率(P0.05)。腿肌率和胸肌率:1%添加组高于对照组(P0.05);各组鸡的脂肪率之间基本上差不多,差异不明显。(3)差异不大的有水分、肉的颜色、肌肉蛋白质(P0.05)表现在其他每个处理组鸡,其它各组鸡(P0.05)的肌间脂肪含量、肌肉嫩程度很明显的低于0.75%添加组鸡,而鸡的肌肉pH很明显的高于0.75%添加组鸡。(4)采用中药成分的添加剂饲养肉仔鸡可以很明显的提高鸡的成活率,它的效果显著比对照组的鸡好。其中添加0.75%的蒲公英水提物具有显著的预防的作用,达到98%成活率。我们试验结果表明:在每天饲喂的饲料中添加0.75%的蒲公英水提物,能够提高肉仔鸡生长性能,对肉鸡仔胴体品质和肉质的改善起到很大的作用,对肉仔鸡的防病能力有很大提高。
[Abstract]:The purpose of this study was to investigate the effects of dandelion water extract on growth performance and immune function of broilers. Two hundred 1-day-old Ebayi plus (AA) broilers were randomly divided into 4 groups, 5 replicates in each group, 10 chickens in each group, A, B, C and 0.75% in the basal diet, respectively. 1% dandelion water extract, the blank control group was group D. It took me a total of 42 days to do the experiment. The growth rate and performance of each group of broilers, the functional indexes of immune organs and the titer of Newcastle disease antibody were measured regularly, and the carcass and meat quality of broilers were measured. We studied the effects of dandelion water extract with different additives on performance and immune function of broilers. The average daily gain, average daily feed intake and feed / meat ratio of 21-day-old and 42-day-old broilers were measured, and the quality and muscle quality of broilers were measured at the end of the experiment. On the 14th, 21st, 28th and 35th day of the experiment, 5 healthy chickens of similar weight were selected for blood collection. The thymic gland, spleen and bursa of the tested chickens were collected and weighed with filter paper to dry the blood, and the immune organ index was calculated. The results showed that: (1) the average daily weight gain of the group supplemented with 0.75% dandelion water extract was 18.6% higher than that of the control group (P01); The ratio of daily feed to body weight gain in group C was 7.8% lower than that in control group (P 0.05). (2), and there was no significant difference in semi-evisceration rate among treatment groups (P 0.05), and the ratio of feed to body weight gain in group C was 7.8% lower than that in control group (P 0.05). The total evisceration rate of the chickens in the 1% group was significantly higher than that in the control group (P 0.05), and the total evisceration rate of the chickens in the 1% group was significantly higher than that in the control group (P 0.05). Leg muscle rate and chest muscle rate: 1% addition group was higher than the control group (P 0.05); The fat percentage of each group was basically the same, but the difference was not obvious. (3) there was no significant difference in moisture, meat color and muscle protein (P 0.05) in each other treatment group. The muscle fat content and muscle tenderness of the other groups (P 0.05) were significantly lower than 0.75% of the chickens in the addition group. The muscle pH of chickens was significantly higher than that of 0.75% added group. (4) the survival rate of broilers fed with additives of traditional Chinese medicine could significantly improve the survival rate of broilers, and its effect was significantly better than that of the control group. Among them, 0.75% dandelion water extract had significant preventive effect, reaching 98% survival rate. The results showed that 0.75% dandelion water extract could improve the growth performance of broilers and improve the carcass quality and meat quality of broilers. The disease prevention ability of broilers has been greatly improved.
【学位授予单位】：吉林农业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：S831.5
本文编号：2496008
[Abstract]:The purpose of this study was to investigate the effects of dandelion water extract on growth performance and immune function of broilers. Two hundred 1-day-old Ebayi plus (AA) broilers were randomly divided into 4 groups, 5 replicates in each group, 10 chickens in each group, A, B, C and 0.75% in the basal diet, respectively. 1% dandelion water extract, the blank control group was group D. It took me a total of 42 days to do the experiment. The growth rate and performance of each group of broilers, the functional indexes of immune organs and the titer of Newcastle disease antibody were measured regularly, and the carcass and meat quality of broilers were measured. We studied the effects of dandelion water extract with different additives on performance and immune function of broilers. The average daily gain, average daily feed intake and feed / meat ratio of 21-day-old and 42-day-old broilers were measured, and the quality and muscle quality of broilers were measured at the end of the experiment. On the 14th, 21st, 28th and 35th day of the experiment, 5 healthy chickens of similar weight were selected for blood collection. The thymic gland, spleen and bursa of the tested chickens were collected and weighed with filter paper to dry the blood, and the immune organ index was calculated. The results showed that: (1) the average daily weight gain of the group supplemented with 0.75% dandelion water extract was 18.6% higher than that of the control group (P01); The ratio of daily feed to body weight gain in group C was 7.8% lower than that in control group (P 0.05). (2), and there was no significant difference in semi-evisceration rate among treatment groups (P 0.05), and the ratio of feed to body weight gain in group C was 7.8% lower than that in control group (P 0.05). The total evisceration rate of the chickens in the 1% group was significantly higher than that in the control group (P 0.05), and the total evisceration rate of the chickens in the 1% group was significantly higher than that in the control group (P 0.05). Leg muscle rate and chest muscle rate: 1% addition group was higher than the control group (P 0.05); The fat percentage of each group was basically the same, but the difference was not obvious. (3) there was no significant difference in moisture, meat color and muscle protein (P 0.05) in each other treatment group. The muscle fat content and muscle tenderness of the other groups (P 0.05) were significantly lower than 0.75% of the chickens in the addition group. The muscle pH of chickens was significantly higher than that of 0.75% added group. (4) the survival rate of broilers fed with additives of traditional Chinese medicine could significantly improve the survival rate of broilers, and its effect was significantly better than that of the control group. Among them, 0.75% dandelion water extract had significant preventive effect, reaching 98% survival rate. The results showed that 0.75% dandelion water extract could improve the growth performance of broilers and improve the carcass quality and meat quality of broilers. The disease prevention ability of broilers has been greatly improved.
【学位授予单位】：吉林农业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：S831.5
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