论文部分内容阅读
试验研究光照和日粮能量干预对内蒙古白绒山羊营养物质表观消化率、毛囊活性和产绒性能的影响。选择体况良好,体重为(20.36±2.63)kg的2周岁内蒙古白绒山羊24只,随机分为4组,每组6只,分别为高能量自然光照组(Ⅰ)、高能量短光照组(Ⅱ)、低能量自然光照组(Ⅲ)和低能量短光照组(Ⅳ),进行5个月的光照控制饲喂试验。结果表明,7月份Ⅳ组次级毛囊活性显著高于Ⅰ组(P<0.05),Ⅱ组和Ⅳ组试验羊的CP消化率显著高于Ⅰ组和Ⅲ组(P<0.05);9月份Ⅳ组试验羊的DM表观消化率显著高于Ⅲ组(P<0.05),Ⅲ组的NDF和CP表观消化率显著低于Ⅳ组和Ⅰ组(P<0.05),Ⅱ组次级毛囊活性显著高于其他三个组(P<0.05);10月份,Ⅰ组试验羊平均体重显著高于Ⅳ组(P<0.05),Ⅱ组和Ⅳ组试验羊的CP消化率显著高于Ⅰ组和Ⅲ组(P<0.05),Ⅳ组次级毛囊活性显著高于Ⅱ组(P<0.05),Ⅱ组和Ⅳ组试验羊的平均绒长度均显著高于Ⅰ组和Ⅲ组(P<0.05);Ⅳ组试验羊的平均绒细度显著低于Ⅰ组(P<0.05);Ⅲ组试验羊的平均绒重量显著低于Ⅱ组(P<0.05)。在本试验条件下,相同光照时间高能量组试验羊平均体重提高6.98%,绒细度增加;相同能量水平短光照组试验羊的DM、NDF和CP表观消化率显著提高,皮肤次级毛囊活性,绒长度和绒重量显著提高。
Effects of Light and Diet Energy on Nutritive Digestibility, Hair Follicle Activity and Cashmere Performance of Inner Mongolian Cashmere Goats. Twenty-four Inner Mongolian white cashmere goats (20.36 ± 2.63 kg) weighing 20.36 ± 2.63 kg were selected and randomly divided into 4 groups with 6 mice in each group, which were high energy natural light group (Ⅰ), high energy short light group (Ⅱ), low energy natural light (Ⅲ) and low energy short light (Ⅳ) for 5 months. The results showed that the activity of secondary follicles in group Ⅳ was significantly higher than that in group Ⅰ in July (P <0.05). The digestibility of CP in group Ⅱ and group Ⅳ was significantly higher than that in group Ⅰ and group Ⅲ (P <0.05) The apparent digestibility of DM in the group of test sheep was significantly higher than that of the group Ⅲ (P <0.05). The apparent digestibility of NDF and CP in group Ⅲ was significantly lower than that of the group Ⅳ and group Ⅰ (P <0.05) (P <0.05). In October, the average body weight of test group Ⅰ was significantly higher than that of group Ⅳ (P <0.05). The CP digestibility of test group Ⅱ and Ⅳ was significantly higher than that of group Ⅰ and (P <0.05). The secondary hair follicle activity of group Ⅳ was significantly higher than that of group Ⅱ (P <0.05). The average cashmere length of group Ⅱ and group Ⅳ was significantly higher than that of group Ⅰ and group Ⅲ (P0.05) (P <0.05). The average pile weight of group Ⅲ was significantly lower than that of group Ⅱ (P <0.05). Under this test condition, the average body weight of sheep in the high-energy group increased by 6.98% and the fineness of the gummy increased. The apparent digestibility of DM, NDF and CP in the sheep with the same energy level was significantly increased, while the secondary hair follicles Activity, velvet length and cashmere weight increased significantly.