试验旨在探究不同饲粮类型对内蒙古白绒山羊粪、尿产生量,粪尿中有机质、化学需氧量(COD)、氮、磷、铜和锌含量及排放量的影响.选择体重相近的24只8月龄内蒙古白绒山羊母羊为研究对象,随机分成4组,即苜蓿青干草组(G1)、苜蓿青干草补饲精料组(G2)、玉米秸秆组(G3)和玉米秸秆补饲精料组(G4)(补饲组每只羊补饲量200 g,饲粮精粗比为2.5∶7.5,其他饲养条件相同),每组6个重复,每个重复1只羊.预试期为10d,正式试验期为30d.结果显示,G2组、G4组鲜粪量显著高于G1组、G3组(P＜0.05),粪干物质量极显著高于G1组(P＜0.01).G1组、G2组内蒙古白绒山羊粪便中铜含量极显著高于G3组、G4组(P＜0.01).G2组、G4组粪便有机质和锌排放量均显著高于G1组、G3组(P＜0.05),磷排放量显著高于G3组(P＜0.05).G2组粪便铜排放量极显著大于其他组(P＜0.01),G1组和G4组极显著大于G3组(P＜0.01).G2组尿液中的氮含量及排放量极显著高于其他组(P＜0.01),磷含量和排放量显著高于G1组、G3组(P＜0.05).研究表明,根据各种饲粮类型所产生的粪尿量及粪尿中污染物排泄规律调控内蒙古白绒山羊饲粮配方,不仅可满足动物的生产需求,还能够降低污染物排泄量.
The purpose of this experiment was to investigate the effects of different dietary types on feces and urine production,organic matter,chemical oxygen demand(COD),nitrogen,phosphorus,copper and zinc content and production in feces and urine of Inner Mongolia white cashmere goats.Twenty-four Inner Mongolia white cashmere goats of eight months old with similar weight were randomly divided into four groups:Alfalfa green hay group(G1),alfalfa green hay supplemental concentrate group(G2),corn straw group(G3),and corn straw supplemental concentrate group(G4)(the supplemental feeding amount of each goat was 200 g,the ratio of concentrate to coarse was 2.5∶7.5,other feeding conditions are the same),with six replicates per group,and one sheep per replicate.The pre-test period was 10 days,and the formal test period was 30 days.The results showed that the amount of fresh feces in the G2 group and G4 group were significantly higher than those in the G1 group and G3 group(P＜0.05),and the mass of dry feces was extremely higher than that in the G1 group(P＜0.01).Cu content in feces of the G1 group and G2 group was extremely higher than that of the G3 group and G4 group(P＜0.01).The emissions of organic matter and zinc in feces of the G2 group and G4 group were significantly higher than those of the G1 group and G3 group(P＜0.05),and the emissions of phosphorus were significantly higher than those of the G3 group(P＜0.05).The fecal copper emission of the G2 group was extremely higher than that of other groups(P＜0.01),and that of the G1 group and G4 group was extremely higher than that of the G3 group(P＜0.01).Nitrogen content and emission in urine of the G2 group were extremely higher than those of other groups(P＜0.01),while the phosphorus content and emission in urine of the G1 group and G3 group were significantly higher than those of the G1 group and G3 group(P＜0.05).The study indicates that the feed formula suitable for Inner Mongolia white cashmere goats can be adjusted according to the amount of feces and urine produced by various diets and the excretion law of pollutants in feces and urine,which can not only meet the production needs of animals,but also reduce the excretion of pollutants.
娜梅拉;张晓东;娜仁花
内蒙古农业大学动物科学学院,内蒙古呼和浩特 010018
畜牧业
饲粮类型;粪尿特性;内蒙古白绒山羊;产粪量;产尿量
type of diet;fecal and urinary characteristics;Inner Mongolia white cashmere goats;fecal production;urine production
《饲料研究》 2024 (009)
12-17 / 6
内蒙古自治区自然科学基金项目(项目编号:2021MS03009);内蒙古绒山羊种质资源保护、创新及智慧养殖技术集成示范(项目编号:2021ZD0012)
10.13557/j.cnki.issn1002-2813.2024.09.003
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