Cui Wenyuan, Lin Changlong, Liu Yuyang, Qiu Zhixin, Gao Wenrui, Wang Chunxin, Chen Yulin, Yang Yuxin
Animal Science and Technology, Northwest A&F University, Xianyang 712100, China.
Hengshan District Animal Husbandry Bureau, Yulin 719000, China.
Animals (Basel). 2023 Mar 9;13(6):995. doi: 10.3390/ani13060995.
The quality and yield of cashmere closely affect the economic benefits of cashmere goat farming. Studies have shown that controlling light can have an important impact on cashmere but can also affect the concentration of harmful gases. In order to explore the impact of a short photoperiod on the growth of cashmere and harmful gases in goat houses, 130 female (non-pregnant) Shanbei white cashmere goats, aged 4-5 years with similar body weights, were randomly divided into a control group and a treatment group, with 65 goats in each group. The dietary nutrition levels of the experimental goats were the same, and completely natural light was used in the control group; the light control group received light for 7 h every day (9:30-16:30), and the rest of the time (16:30-9:30 the next day) they did not receive light. The light control treatment was carried out in a control house, and the gas content was analyzed. It was found that a shortened period of light exposure could increase the annual average cashmere production by 34.5%. The content of each gas has a certain functional relationship with the measurement time period, but at the same time, we found that the content of NH3 also changes seasonally. In summary, the use of shortened light periods when raising cashmere goats can significantly increase cashmere production and quality, but at the same time, it will increase the concentration of harmful gases in the goat barn, and ventilation should be increased to ensure the health of the goats and the air quality in the barn.
羊绒的品质和产量密切影响着绒山羊养殖的经济效益。研究表明，控制光照对羊绒有重要影响，但也会影响有害气体的浓度。为了探究短光照周期对绒山羊羊绒生长及羊舍内有害气体的影响，选取130只体重相近、年龄4至5岁的陕北白绒山羊母羊（非妊娠），随机分为对照组和处理组，每组65只。实验山羊的日粮营养水平相同，对照组采用完全自然光；光照控制组每天光照7小时（9:30 - 16:30），其余时间（16:30至次日9:30）不光照。光照控制处理在可控羊舍内进行，并分析气体含量。结果发现，缩短光照周期可使羊绒年平均产量提高34.5%。各气体含量与测量时间段存在一定函数关系，但同时我们发现NH₃含量也随季节变化。综上所述，饲养绒山羊时采用缩短光照周期可显著提高羊绒产量和品质，但同时会增加羊舍内有害气体浓度，应增加通风以确保山羊健康和羊舍空气质量。
