摘要
本试验旨在比较比格犬、北极狐和乌苏里貉的养分表观消化率、生长性能和氮代谢指标的差异,并建立其预测方程。分别选取成年雌性比格犬[体重为(18.53±3.25)kg]、北极狐[体重为(6.76±0.63)kg]、乌苏里貉[体重为(6.43±1.37)kg]各10只,每种动物独立作为1组,共分为3组,每组10只。试验共5个阶段,每个阶段10 d,同一阶段各组饲喂相同饲粮,共使用5种饲粮。结果表明:1)比格犬粗蛋白质(CP)、粗脂肪(EE)和碳水化合物(CHO)表观消化率显著高于北极狐(P<0.05),与乌苏里貉无显著差异(P>0.05)。2)比格犬平均日增重(ADG)、平均日采食量(ADFI)显著低于北极狐(P<0.05),与乌苏里貉无显著差异(P>0.05)。3)比格犬摄入氮(NI)、粪氮(FN)、氮沉积(RN)显著低于北极狐(P<0.05),与乌苏里貉无显著差异(P>0.05)。4)比格犬与北极狐干物质(DM)、钙(Ca)、磷(P)表观消化率及NI呈显著正相关(P<0.05)。比格犬与乌苏里貉DM、CP、EE、粗灰分(Ash)、Ca、P表观消化率及ADFI、料重比(F/G)呈显著或极显著正相关(P<0.05或P<0.01)。5)本试验共建立12个预测方程,其中北极狐对比格犬的预测方程4个,乌苏里貉对比格犬的预测方程8个。综上所述,相较于北极狐,乌苏里貉与比格犬养分表观消化率、生长性能和氮代谢指标相似度更高,数据相关性更强,预测方程建立更多。在作为比格犬的模型动物方面,乌苏里貉可能要优于北极狐。
This experiment was conducted to compare the differences of nutrient apparent digestibility,growth performance and nitrogen metabolism indexes of Beagle dogs,Arctic foxes and Ussuri raccoon dogs,and to establish their prediction equations.Ten adult female Beagle dogs with body weight of(18.53±3.25)kg,ten Arctic foxes with body weight of(6.76±0.63)kg,and ten Ussuri raccoon dogs with body weight of(6.43±1.37)kg were selected,each animal independently as one group,divided into 3 groups with 10 animals in each group.The experiment consisted of 5 stages,each stage included 10 days,each group was fed the same diet at the same stage,and a total of 5 kinds of diets were used.The results showed as follows:1)the apparent digestibility of crude protein(CP),ether extract(EE)and carbohydrates(CHO)of Beagle dogs was significantly higher than that of Arctic foxes(P<0.05),and had no significant difference compared with Ussuri raccoon dogs(P>0.05).2)The average daily gain(ADG)and average daily feed intake(ADFI)of Beagle dogs were significantly lower than those of Arctic foxes(P<0.05),and had no significant difference compared with Ussuri raccoon dogs(P>0.05).3)The nitrogen intake(NI),fecal nitrogen(FN),and retention nitrogen(RN)of Beagle dogs were significantly lower than those of Arctic foxes(P<0.05),and had no significant difference compared with Ussuri raccoon dogs(P>0.05).4)The apparent digestibility of dry matter(DM),calcium(Ca),phosphorus(P)and NI showed significant positive correlations between Beagle dogs and Arctic foxes(P<0.05).The apparent digestibility of DM,CP,EE,crude ash(Ash),Ca,P and ADFI,feed to gain ratio(F/G)showed significant positive correlations between Beagle dogs and Ussuri raccoon dogs(P<0.05 or P<0.01).5)Twelve prediction equations were established in this experiment,with four prediction equations of Arctic foxes to Beagle dogs,and 8 prediction equations of Ussuri raccoon dogs to Beagle dogs.In conclusion,compared with Arctic foxes,the Ussuri raccoon dogs are more similar to Beagle dogs in the nutrient apparent digestibility,growth performance and nitrogen metabolism indexes,the data correlation is significant,and more prediction equations have been established.Ussuri raccoon dogs may be superior to Arctic foxes as model animals for Beagle dogs.
作者
李鑫康
赵梦迪
王奕昕
张潇睿
张媛媛
李悦垚
梁爽
吴怡
张悦
张睿涵
李光玉
LI Xinkang;ZHAO Mengdi;WANG Yixin;ZHANG Xiaorui;ZHANG Yuanyuan;LI Yueyao;LIANG Shuang;WU Yi;ZHANG Yue;ZHANG Ruihan;LI Guangyu(College of Animal Science and Technology,Qingdao Agricultural University,Qingdao 266109;College of Animal Science and Technology,Jilin Agricultural University,Changchun 130118,China)
出处
《动物营养学报》
北大核心
2025年第9期6228-6240,共13页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
青岛农业大学高层次人才科研启动基金(1121021)。
关键词
比格犬
北极狐
乌苏里貉
消化代谢
预测方程
Beagle dogs
Arctic foxes
Ussuri raccoon dogs
digestion and metabolism
prediction equations
