一般项目：技术服务、技术开发、技术咨询、技术交流、技术转让、技术推广；土壤污染治理与修复服务；污水处理及其再生利用；林业产品销售；树木种植经营；园区管理服务；创业空间服务；科技中介服务；物业管理；生物饲料研发；生物有机肥料研发；复合微生物肥料研发；饲料原料销售；饲料添加剂销售；鲜肉批发；鲜肉零售；鲜蛋批发；鲜蛋零售；初级农产品收购；农副产品销售（除依法须经批准的项目外，凭营业执照依法自主开展经营活动）
The experiment aimed to investigate the effects of different silage additives on the nutritional components and fermentation quality of Broussonetia papyrifera silage.Direct silage with 60％water content was used as control group.Each additive group was supplemented with 3.5％molasses(group 1),1 g/kg bacterial enzyme preparation(group 2),5 mL/kg formic acid(group 3),molasses+bacterial enzyme preparation(group 4),molasses+formic acid(group 5),bacterial enzyme preparation+formic acid(group 6),molasses+bacterial enzyme preparation+formic acid(group 7),respectively.Each group contained three replicates.The silage was stored for 60 days.The results showed that the sensory score of the control group was low(average),the sensory score of the group 3 was 14(good),and that of the other groups was equal to or higher than 16(excellent),and the sensory score of the group 7 was the highest(20).Compared to the control group,the dry matter content of the group 2,groups 4 to 7 was significantly increased(P＜0.05),except for group 3,the crude protein and soluble crude protein content in the other groups were significantly increased(P＜0.05),and the acid detergent lignin content was significantly decreased(P＜0.05).The groups 4 to 7 showed a significant increase in soluble carbohydrate content(P＜0.05).All groups significantly reduced the concentrations of neutral detergent fiber and acid detergent fiber(P＜0.05),and significantly increased the non-protein nitrogen content(P＜0.05).Compared to the control group,the pH value and the ratio of ammonium nitrogen to total nitrogen in the all groups were significantly decreased(P＜0.05),and the lactic acid content was significantly increased(P＜0.05),aerobic stability improved(P＜0.05),with groups 4 to 7 showing significantly higher aerobic stability than groups 1 to 3(P＜0.05),and group 7 had the highest aerobic stability at 65.44 hours.The study indicates that the addition of silage additives during the ensiling process of B.papyrifera can improve sensory scores,nutritional components,fermentation quality,and aerobic stability,with the combination of molasses+microbial enzyme preparation+formic acid showing the better results.
Scientifically and rationally developing woody forage plant resources is an important way to solve the shortage of feed raw material resources,which is of great significance for sustainable development of animal husbandry in our country.There are many kinds of woody forage plants,strong adaptability and high nutritional value,and it is better to replace part of protein feed for feeding ruminants and monogastric animals.At present,woody forage plants such as arborvitae,forage mulberry,moringa and cassava have been widely used in animal husbandry production.The nutrient composition,active ingredients and biological characteristics of woody forage plants are important aspects to consider as feed ingredients.In this paper,the research progress on the nutrient composition,active ingredients and biological characteristics of woody forage plants commonly used in animal production is reviewed,in order to provide a reference for promoting the development and utilization of woody forage plants.
The experiment aimed to investigate the effects of replacing a portion of corn,expanded soybean meal,and other ingredients in the basic diet of meat rabbits with hybrid Broussonetia papyrifera whole plant powder on the growth performance,slaughter performance,organ index,meat quality,serum biochemical indexes,and intestinal tissue morphology of meat rabbits.A total of 192 commercial meat rabbits weaned at 35 days of age were randomly divided into four groups,with six replicates per group and eight rabbits per replicate.Some corn,extruded soybean meal,peanut shell,and peanut vine in the basal diet were replaced by 0%(control group),5%(5%group),10%(10%group)and 15%(15%group)hybrid whole plant meal,respectively.The pre-feeding period was seven days,and the formal trial period was 30 days.The results showed that compared with the control group,the 5%group could extremely increase the final weight of the rabbits(P<0.01)and increase the average daily weight gain(P>0.05).The 10%group could extremely increase the daily feed intake and growth rate(P<0.01),and extremely reduce the incidence and mortality rate(P<0.01).All experimental groups extremely reduced liver weight and liver index(P<0.01).The shear force of the longissimus dorsi muscle of rabbits in all experimental groups was extremely higher than that of the control group(P<0.01),with the 10%group being the highest.Compared with the control group,the 10%and 15%groups could extremely reduce the serum albumin/globulin ratio and the urea nitrogen/creatinine ratio,and significantly increase creatinine content(P<0.05).The 15%group could significantly increase the activity of alanine aminotransferase(P<0.05).The 5%group could extremely increase the villus height of the duodenum,jejunum,and ileum(P<0.01),and significantly increase the villus crypt ratio of the duodenum(P<0.05).The 15%group could extremely increase the villus crypt ratio of the ileum(P<0.01).The results show that 5%and 10%hybrid Broussonetia papyrifera whole plant powder has a good effect on improving growth performance,serum biochemical indexes,meat quality and intestinal tissue morphology of meat rabbits.
