单 位：
云南农业大学动物科学技术学院云南省动物营养与饲料重点实验室云南省文山州麻栗坡县大坪镇畜牧兽医站昆明华港饲料有限公司;云南农业大学动物科学与技术学院云南农业大学植物保护学院云南省动物营养与饲料重点实验室西双版纳邦格牧业科技有限公司;湖南美可达生物资源有限公司
关键词：
几丁聚糖;抗生素;北京肉鸭;生长性能;屠宰性能
摘 要：
试验旨在通过饲料中添加不同水平的几丁聚糖,研究其对北京肉鸭生长性能及屠宰性能的影响,为饲料中添加几丁聚糖替代抗生素提供理论依据。选用10日龄的北京小鸭800只,随机分成4个组,每组设4个重复,每个重复50只10日龄的北京小鸭(公母各半)。试验组分别饲喂在基础日粮中添加0.5%、1.0%、2.0%的几丁聚糖的饲料,且基础日粮中不含有任何抗生素,对照组饲喂在基础日粮中添加0.02%的杆菌肽锌的多肽抗生素饲料。全程采用自由采食和饮水,自然光照,笼上群养。通过测定北京肉鸭的体重、采食量、料肉比、成活率以及屠宰性能等指标,比较添加几丁聚糖与添加抗生素的效果,进一步筛选出几丁聚糖的适宜添加比例。结果表明:试验组与对照组在体重上没有显著的差异(P>0.05),对照组较试验组能显著地提高饲料报酬(P<0.05),但对照组的成活率低于试验组。在屠宰率、半净膛率、全净膛率、胸肌率上,各组之间差异不显著(P>0.05)。从肉色来看,各组差异不显著(P>0.05),肉面感官品质上没有明显的差异。综上所述,在饲料中添加几丁聚糖替代抗生素后,也能在生长性能和屠宰性能上获得与添加抗生素相近的效果,其中以添加1.0%的几丁聚糖的效果相对较好,可替代抗生素使用。
译 名：
The Effect of Adding Chitosan in Feed on Growth Performance and Slaughter Performance of Peking Duck
作 者：
JIAO Deling;ZENG Luyao;YANG Di;YANG Li;HUANG Yong;CONG Li;WEI Hongjiang;PAN Weirong;Key Laboratory of Animal Nutrition and Feed of Yunnan Province,Yunnan Agricultural University;College of Animal Science and Technology,Yunnan Agricultural University;Nanjing Zhuokang Biological Technology Co.,Ltd.;
关键词：
chitosan;;antibiotics;;Peking Duck;;growth performance;;slaughter performance
摘 要：
In this study the growth and slaughter performance of Peking Ducks was investigated by adding different proportions of chitosan in feed. Eight hundred 10-day-old Peking Ducks were selectedand randomly divided into four groups. Each group was divided into four replicates,and each repeated group had 50 of the 10-day-old Peking Ducks( half male and half female). The experimental groups were fed with the basic diet added with 0. 5%,1. 0% and 2. 0% of chitosan,and without any antibiotic. The control groups were fed with the basic diet added by 0. 02% zinc bacitracin polypeptide antibiotics. Free food,drinking water,natural light and cage were used in the whole experiment. The added chitosan and antibiotic effect were compared through detecting the body weight,feed intake,feed meat ratio,survival ratio and slaughtering performance of Peking ducks. Thus,the appropriate proportion of chitosan in feed was screened out. The experimental results were as follows: there was no significant difference in body weight between the experimental groups and the control group( P > 0. 05),while compared with the experimental group,the ratio of feed to meat was significantly higher than that of the control group( P < 0. 05). However,the survival rate of the control group was lower than those of the experimental groups and the control group had significant improvement on feed efficiency( P < 0. 05).On the slaughter ratio,half eviscerated ratio,eviscerated ratio and chest ratio,there were no significant difference among the groups( P > 0. 05). The luminance value,red value and yellow value also were not significantly different( P > 0. 05),and there was no obvious difference on the surface of the meat sensory quality. These findings suggest that the addition of chitosan in feed can also obtain the similar effect as antibiotics in feed on the growth performance and slaughter performance. Among them,the effect of adding 1. 0% chitosan in feed is relatively good,which can be used as an alternative to addition of antibiotics in feed. This study provides a theoretical basis for the feed adding with chitosan instead of antibiotics.
