CAJ | 학술논문

为研究复合有机酸添加水平对陕北白绒山羊粪、尿及甲烷排放量的影响，将36只1周岁空怀期陕北白绒山羊随机分成 A （对照组）、B 、C 、D 4个组，每组3个重复，每个重复3只羊。 A 组饲喂基础日粮，3个试验组分别饲喂含0．80％复合有机酸（50％苹果酸＋50％延胡索酸，下同）、1．60％复合有机酸和2．40％复合有机酸的试验日粮，进行为期37 d 的饲养试验，于饲养试验第20 d 进行为期7 d 的消化代谢试验和甲烷排放量测定。结果表明：（1）4个组单位增重尿排放量差异不显著（P ＞0．05），单位增重粪排放量和粪尿总排放量均存在显著差异（P＜0．05），其中 B 组和 C 组单位增重粪排放量、单位增重粪尿总排放量较对照组均降低（P＜0．05），D 组与对照组差异不显著（P＞0．05）；（2）4个组单位增重甲烷排放量存在显著差异（P＜0．05），其中 B 组、C 组单位增重甲烷排放量较对照组均显著降低（P＜0．05），D 组与对照组差异不显著（P＞0．05）。上述结果表明：（1）日粮中添加不同水平复合有机酸能不同程度地降低陕北白绒山羊单位增重粪、尿排放量和甲烷排放量；（2）有机酸饲料添加剂存在剂量效应，本试验条件下，有机酸最适宜添加水平为0．80％～1．60％。
위연구복합유궤산첨가수평대협북백융산양분、뇨급갑완배방량적영향，장36지1주세공부기협북백융산양수궤분성 A （대조조）、B 、C 、D 4개조，매조3개중복，매개중복3지양。 A 조사위기출일량，3개시험조분별사위함0．80％복합유궤산（50％평과산＋50％연호색산，하동）、1．60％복합유궤산화2．40％복합유궤산적시험일량，진행위기37 d 적사양시험，우사양시험제20 d 진행위기7 d 적소화대사시험화갑완배방량측정。결과표명：（1）4개조단위증중뇨배방량차이불현저（P ＞0．05），단위증중분배방량화분뇨총배방량균존재현저차이（P＜0．05），기중 B 조화 C 조단위증중분배방량、단위증중분뇨총배방량교대조조균강저（P＜0．05），D 조여대조조차이불현저（P＞0．05）；（2）4개조단위증중갑완배방량존재현저차이（P＜0．05），기중 B 조、C 조단위증중갑완배방량교대조조균현저강저（P＜0．05），D 조여대조조차이불현저（P＞0．05）。상술결과표명：（1）일량중첨가불동수평복합유궤산능불동정도지강저협북백융산양단위증중분、뇨배방량화갑완배방량；（2）유궤산사료첨가제존재제량효응，본시험조건하，유궤산최괄의첨가수평위0．80％～1．60％。
The aim of this paper was to study the effect of composite organic acid adding levels on fe-ces ,urine and methane emissions of white cashmere goats .Thirty-six Shaanbei white cashmere goats aged oneyear during non-pregnancy were randomly divided into four treatment groups ,group A(control group) , group B ,group C and group D ,respectively ,three replicates per group ,three goats per replicate .Group A was fed with basal diet ,and three experimental groups with experimental diets containing 0 .80% ,1 .60%and 2 .40% composite organic acid(50% malic acid and 50% fumaric acid) respectively .The feeding trial lasted for 37d ,then a seven-day digestive metabolism test and methane emissions measurement test were conducted on 20th day of feeding trial .The results showed that :first ,four treatment groups had no signifi-cant differences for urine emissions per weight gain (P> 0 .05) ,but had significant differences for feces and urine emissions per weight gain and feces emissions per weight gain (P< 0 .05) .Group B and group C de-creased feces and urine emissions per weight gain and feces emissions per weight gain significantly com -pared with that of the control group (P< 0 .05) ,but group D had no significant differences compared with control group(P > 0 .05) ;second ,four treatment groups had significant differences for methane emissions per weight gain(P< 0 .05) .Group B and group C decreased methane emissions per weight gain significant -ly compared with control group (P< 0 .05) ,but group D had no significant differences compared with con-trol group(P> 0 .05) .The results concluded that adding composite organic acid of different levels to diets can decrease feces ,urine and methane emissions per weight gain of Shaanbei white cashmere goats with va -rying degrees ;composite organic acid supplement had significant dosage effect and the optimum adding lev -el was 0 .80% ~ 1 .60% under the condition of this experiment .