CAJ | 학술논문

本试验在新疆昌吉天山畜牧有限公司牛场挑选初产荷斯坦牛36头，研究亚麻籽木脂素（SDG）对初产奶牛产奶性能及某些激素水平的影响。将试验牛分为试验组和对照组，每组18头，对照组饲喂基础日粮，试验组在基础日粮基础上在精料中添加SDG（3.75g/kg），连续饲喂95d。试验结果表明，添加SDG可以显著提高奶牛产奶量，与对照组比较平均提高了19.01%（P<0.05），而且对牛乳中的乳脂率及乳蛋白率基本没有影响，差异均不显著（P>0.05）；体细胞数与对照组比较平均降低了31.48%，但差异不显著（P>0.05）；试验牛血浆中TRH、TSH、T3、T4的含量均有显著下降，与对照组比较总体平均值分别降低了10.08%（P<0.05）、10.63%（P<0.05）、22.07%（P<0.01）、12.5%（P<0.01）；与对照组比较，试验牛血浆中T-AA水平整体处于上升的趋势，第75天时比对照组提高了13.33%，差异显著（P<0.05）；并且与对照组比较，试验组奶牛血浆中ACTH从第25天开始处于上升的趋势，但差异不显著（P>0.05）。说明添加亚麻籽木脂素可以提高初产奶牛产奶性能，提高蛋白质的利用率以及降低体细胞数。
본시험재신강창길천산축목유한공사우장도선초산하사탄우36두，연구아마자목지소（SDG）대초산내우산내성능급모사격소수평적영향。장시험우분위시험조화대조조，매조18두，대조조사위기출일량，시험조재기출일량기출상재정료중첨가SDG（3.75g/kg），련속사위95d。시험결과표명，첨가SDG가이현저제고내우산내량，여대조조비교평균제고료19.01%（P<0.05），이차대우유중적유지솔급유단백솔기본몰유영향，차이균불현저（P>0.05）；체세포수여대조조비교평균강저료31.48%，단차이불현저（P>0.05）；시험우혈장중TRH、TSH、T3、T4적함량균유현저하강，여대조조비교총체평균치분별강저료10.08%（P<0.05）、10.63%（P<0.05）、22.07%（P<0.01）、12.5%（P<0.01）；여대조조비교，시험우혈장중T-AA수평정체처우상승적추세，제75천시비대조조제고료13.33%，차이현저（P<0.05）；병차여대조조비교，시험조내우혈장중ACTH종제25천개시처우상승적추세，단차이불현저（P>0.05）。설명첨가아마자목지소가이제고초산내우산내성능，제고단백질적이용솔이급강저체세포수。
To study the effect of lfaxseed lignans on lactating performance and some endocrine hormone levels of primiparous dairy cows, 36 head of primiparous Holstein cows in farm of Xinjiang Changji Tianshan livestock Co. Ltd. were selected and divided into two groups, 18 heads for each group. The control group feed with basal diet, the test group was feed in the basic diet adding SDG (3.75g/kg), and they were feeding for continuous 95 days. The test results showed that lfaxseed lignans increased the milk yield the test group signiifcantly compared with the control group, and increased by 19.01% (P< 0.05). The milk fat and milk protein yield were basically not affected, the difference was not signiifcant (P>0.05). The somatic cell counts for the test group cows were decreased of 31.48%compared with the control group, but the difference was not signiifcant (P> 0.05). The TRH, TSH, T3, T4 levels in bovine plasma for test group were decreased signiifcantly compared with the control group, the overall average values were 10.08%(P<0.05), 10.63%(P<0.05), 22.07%(P<0.01), 12.5%(P<0.01) respectively. The T-AA level test in bovine plasma for the test group was in an upward trend, it increased of 13.33%(P< 0.05) in 75d than the control group. The ACTH levels for test cows were in the rising trend in 25d compared with the control group, the difference was not signiifcant (P> 0.05). That lfaxseed lignans can improve the performance of primiparous dairy cows, increase the content of protein utilization and decrease the somatic cell counts.