Design Of Family Sheep Farm In Northern Shaanxi And Study On The Effect Of Light Control On Cashmere Growth

With the recent increasing demand for cashmere,cashmere production has played an important role in increasing farmers’ income of Northern Shaanxi,therefore,cashmere growth affected by photoperiod,Short light time can promote the growth of cashmere,therefore,In the plush cashmere goats during the time of artificial lighting can contribute to shortening plush cashmere goat.For this purpose,We use the Loess Plateau Areas of excavation cave and accompanying the process of urbanization.Currently a large number of idle or abandoned rural actual cave,also consider the family sheep farm in northern Shaanxi rapid development needs to be designed or modified ranch,and the need to increase velvet light-control technology promotion,Our basic research in Northern Shaanxi Province,Specially designed Family sheep farm with cave,test on the sheep of Northern Shaanxi White Cashmere goats cashmere increase light control effect in the cave. The main results obtained are as follows:1. On the basis of investigation and research,That family farmers of the Loess Plateau region widespread cultivated area is 26.5 acres,crop residues total are44175.5kg,accordingly,Suitable breeding sheep farm family size calculations determined is 76 sheep,the structure of sheep is Foundation ewes 35,Young ewes20,lamb 20,Ram 1.2. Design family sheep farm with comprise:sheep cave,playground,hayloft,concentrate library,silo,drug bath,supporting machinery equipment,And the corresponding design parameters.3. Design of light control sheep cave has Closed light control sheep and sheep Switching light control,light control can be achieved when the light intensity of less than 0.1 lux,ammonia concentration is less than 30 ppm of conditions.4. Choose health, consistent with the weight of Northern shannxi white cashmere goats nonpregnant ewes 50,dividing into experimental group(30) and the control group(20)randomly.Experimental group performed daily from 16:30 to 09:30 the following day light control,the control group is natural lighting group.maintaining at the same levels of nutrition, free drinking water conditions.Research indicates:Villus length of the test group was significantly higher than the control group(P <0.05),Light-control technology can effectively improve the growth velvet northern Shaanxi white cashmere goat cashmere length 13%,mechanical ventilation in light-control sheep cave,and select the appropriate stocking density can effectively reduce the concentration of ammonia in the Cave of light control sheep.