陕北窑洞式光控增绒效果及羊舍环境参数研究
发布时间：2019-01-10 10:41
【摘要】：本试验将陕北窑洞作为光控羊舍,控制陕北白绒山羊光照时间,使其在非绒期产绒,增加产绒量,达到利用闲置资源,提高养殖效益的目的。同时为了推广窑洞式光控增绒技术,本试验进一步研究了羊群在光控期间羊舍内有害气体含量的变化规律,为建设标准化的窑洞式光控舍提供环境参数的依据。选取50只年龄、体况相近的陕北白绒山羊母羊作为试验动物,随机平均分为两组,试验组25只,对照组25只。用窑洞作为光控羊舍,试验组羊只每天16:30~翌日9:30进入窑洞遮光,控制光照强度小于0.1 Lx;对照组羊只无遮光处理;试验组和对照组除光照时间不同,其他条件完全相同,均自由采食、饮水,常规管理。同时为了全程记录羊舍内的二氧化碳、氨气、温度以及湿度参数,试验共设定7个监测点,对照组羊舍3个,编号为A、C、E,试验组羊舍3个,编号为B、D、F,户外监测点1个,编号为O。羊舍内监测点均匀分布在羊舍的纵轴上,距离地面1.5 m处。户外监测点设置在两个羊舍中间。各个监测点的循环顺序依次为O-A-B-C-D-E-F,每隔10分钟记录一个监测点数据,每70分钟完成一次循环。所得结果如下:(1)窑洞式光控增绒技术,对陕北白绒山羊绒纤维的伸直长度和产绒量均有显著的影响(P0.05),但对陕北白绒山羊绒纤维细度影响不显著(P0.05)。(2)窑洞式光控增绒技术,可以加快绒纤维在非产绒期的生长速度,延长绒纤维在非产绒期的生长时间,增加绒纤维长度,使得整体产绒量提高,从而达到一年剪两次绒的目的。(3)窑洞式光控舍内的二氧化碳的浓度与舍内羊只的密度有一定的关联,并且不会随着季节的变化而变化。(4)在进行光控试验期间的二氧化碳浓度变化为:9:30~10:30这个时间段内二氧化碳的浓度为y=0.1603x~(-0.328),10:30~16:30的二氧化碳浓度为0.02%~0.04%,16:30~19:30的二氧化碳浓度为y=0.0208ln(x)+0.021,19:30~翌日9:30的二氧化碳浓度为0.10%~0.16%。(5)窑洞式光控舍内的氨气浓度与舍内的温度和通风有关。(6)窑洞式光控舍具备高温季节降温的功能,而且温度稳定,温差小,但在高湿季节应采取降低湿度的措施。
[Abstract]:In this experiment, the cave in the north of Shaanxi was used as the light-controlled sheep house, and the illumination time of the white cashmere goat was controlled, so that the white cashmere goat could produce cashmere in the non-velvet period, increase the cashmere yield, and achieve the purpose of utilizing idle resources and improving the efficiency of breeding. At the same time, in order to popularize the light control and pile increasing technology of cave type, this experiment further studied the change rule of harmful gas content in sheep house during the period of light control, and provided the basis of environmental parameters for the construction of standardized cave type light control house. Fifty white cashmere goat ewes of similar age were randomly divided into two groups: the experimental group (n = 25) and the control group (n = 25). Using the cave as the light-controlled sheep house, the sheep in the experimental group entered the cave every day from 16: 30 to 9:30 on the following day, and the control light intensity was less than 0. 1 Lx; in the control group, and there was no shading treatment in the control group. The experimental group and the control group were free to eat, drinking water and routine management except for different light time and other conditions. At the same time, in order to record the parameters of carbon dioxide, ammonia, temperature and humidity in sheep house, 7 monitoring points were set up in the experiment. Outdoor monitoring point 1, number O. The monitoring points were evenly distributed on the longitudinal axis of the sheephouse, 1.5 m from the ground. Outdoor monitoring points are set between two sheephouses. The cyclic order of each monitoring point is O-A-B-C-D-E-F.The data of each monitoring point is recorded every 10 minutes, and the cycle is completed every 70 minutes. The results are as follows: (1) the light-controlled cashmere increasing technique of cave type has a significant effect on the straightening length and cashmere yield of white cashmere fiber in Northern Shaanxi (P0.05). However, there was no significant effect on the fineness of white cashmere fiber in Northern Shaanxi (P0.05). (2), which could accelerate the growth rate of cashmere fiber in non-cashmere stage and prolong the growth time of cashmere fiber in non-cashmere period. Increasing the length of pile fiber can increase the overall production of cashmere and achieve the purpose of shearing velvet twice a year. (3) there is a certain correlation between the concentration of carbon dioxide in the cave light control house and the density of sheep in the house. And it will not change with the seasons. (4) the carbon dioxide concentration during the photocontrol experiment is 9: 30: 10: 30. The concentration of carbon dioxide is 0.1603x- 0.328 during the period of 9: 30: 10: 30. The concentration of carbon dioxide at 10: 30 and 16: 30 is 0.02 and 0.04. The concentration of carbon dioxide at 16: 30 / 1930 is y=0.0208ln (x) 0.021 / 19: 30 ~ 9:30 on the following day, and the concentration of carbon dioxide is 0.10 / 0.16. (5) the concentration of ammonia and the temperature and ventilation of the house in the cave light control house. Related. (6) the cave type light control house has the function of cooling down in the high temperature season, And the temperature is stable, the temperature difference is small, but in the high humidity season should take the humidity reduction measure.
【学位授予单位】：西北农林科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：S827
本文编号：2406215
[Abstract]:In this experiment, the cave in the north of Shaanxi was used as the light-controlled sheep house, and the illumination time of the white cashmere goat was controlled, so that the white cashmere goat could produce cashmere in the non-velvet period, increase the cashmere yield, and achieve the purpose of utilizing idle resources and improving the efficiency of breeding. At the same time, in order to popularize the light control and pile increasing technology of cave type, this experiment further studied the change rule of harmful gas content in sheep house during the period of light control, and provided the basis of environmental parameters for the construction of standardized cave type light control house. Fifty white cashmere goat ewes of similar age were randomly divided into two groups: the experimental group (n = 25) and the control group (n = 25). Using the cave as the light-controlled sheep house, the sheep in the experimental group entered the cave every day from 16: 30 to 9:30 on the following day, and the control light intensity was less than 0. 1 Lx; in the control group, and there was no shading treatment in the control group. The experimental group and the control group were free to eat, drinking water and routine management except for different light time and other conditions. At the same time, in order to record the parameters of carbon dioxide, ammonia, temperature and humidity in sheep house, 7 monitoring points were set up in the experiment. Outdoor monitoring point 1, number O. The monitoring points were evenly distributed on the longitudinal axis of the sheephouse, 1.5 m from the ground. Outdoor monitoring points are set between two sheephouses. The cyclic order of each monitoring point is O-A-B-C-D-E-F.The data of each monitoring point is recorded every 10 minutes, and the cycle is completed every 70 minutes. The results are as follows: (1) the light-controlled cashmere increasing technique of cave type has a significant effect on the straightening length and cashmere yield of white cashmere fiber in Northern Shaanxi (P0.05). However, there was no significant effect on the fineness of white cashmere fiber in Northern Shaanxi (P0.05). (2), which could accelerate the growth rate of cashmere fiber in non-cashmere stage and prolong the growth time of cashmere fiber in non-cashmere period. Increasing the length of pile fiber can increase the overall production of cashmere and achieve the purpose of shearing velvet twice a year. (3) there is a certain correlation between the concentration of carbon dioxide in the cave light control house and the density of sheep in the house. And it will not change with the seasons. (4) the carbon dioxide concentration during the photocontrol experiment is 9: 30: 10: 30. The concentration of carbon dioxide is 0.1603x- 0.328 during the period of 9: 30: 10: 30. The concentration of carbon dioxide at 10: 30 and 16: 30 is 0.02 and 0.04. The concentration of carbon dioxide at 16: 30 / 1930 is y=0.0208ln (x) 0.021 / 19: 30 ~ 9:30 on the following day, and the concentration of carbon dioxide is 0.10 / 0.16. (5) the concentration of ammonia and the temperature and ventilation of the house in the cave light control house. Related. (6) the cave type light control house has the function of cooling down in the high temperature season, And the temperature is stable, the temperature difference is small, but in the high humidity season should take the humidity reduction measure.
【学位授予单位】：西北农林科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：S827
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