The effects of utilization of hazelnut oil,sunflower oil and their products on performance and fatty acid composition of yolk in layer hens

This research has been performed to determine the effects of hazelnut crude oil, sunflower crude oil and its refinery by-products over the laying hens performance and the fatty acid composition of the egg’s yolk. Four hundreds 36-week-old Nick Brown layer hens were allocated into five groups. Treatment groups were supplemented with 1.5% of sunflower crude oil, hazelnut crude oil, acidulated sunflower soapstock, acidulated hazelnut soapstock and acidulated hazelnut crude oil. The daily feed consumption for groups that were fed with crude oils were numerically improved as compared for those nourished with acidulated soapstocks. Although the percentages of cracked and broken eggs in acidulated hazelnut soapstock group was significantly higher than the other groups, daily feed consumption and egg production values were not different. The usage of acidulated hazelnut soapstock reduced the percentage of intact egg ratio. Egg’s specific gravity and yolk color index were the highest level throughout the experiment from start to end in hazelnut crude oil group (p < 0.05). In group that was nourished by hazelnut oil, Omega 3/Omega-6 fatty acid ratios in egg yolk were higher than the groups that were fed with sunflower oil. The oleic acid content of the egg yolk was increased in the groups which were supplemented with hazelnut crude oil and acidulated hazelnut crude oil. Consequently, hazelnut crude oil and acidulated hazelnut crude oil improved the egg shell quality, yolk color index and yolk oleic acid value which would increase egg’s shelf life. On the other hand acidulated hazelnut soapstock supplementation adversely affects the quality of egg shell.     

Finishing cattle at pasture at 30 months of age or indoors at 25 months of age: Effects on selected carcass and meat quality characteristics

To examine the effect of a modification of a typically Irish dairy calf-to-beef production system, Charolais × Friesian steers were offered a finishing ration of grass silage ad libitum and 5.6 kg concentrates daily for 174 days prior to slaughter at 25 months of age or grass silage ad libitum for 174 days, followed by pasture for 167 days and slaughter at 30 months of age. Finishing at pasture increased carcass weight (376 vs. 342 kg) but did not affect intra-muscular lipid concentration (28 vs. 24 g/kg). Finishing at pasture decreased Longissimus thoracis et lumborum lightness (35.6 vs. 36.9) and increased shear force of muscle at 2 (8.54 vs 4.32) and 7 days (5.21 vs 3.64 kg) post-mortem but not at 14 days post-mortem (4.45 vs. 3.42 kg). Finishing at pasture did not affect the sensory characteristics of tenderness, juiciness, firmness or chewiness and tended (P < 0.1) to decrease texture and acceptability. It is concluded that modification of this beef production system as described, had minor effects on beef quality which are unlikely to be of commercial significance.     

黄芩注射液的制备工艺及质量标准的初步研究

目的:研制以黄芩和柴胡为主药的注射剂,并建立质量控制标准。方法:以传统的水提醇沉法制备该注射剂,采用薄层色谱法对黄芩甙进行鉴定,并用紫外分光光度法测定黄芩甙的含量。结果:采用水提醇沉法制备得到的该注射剂符合药典关于注射剂的各项检查。实验结果表明:黄芩苷含量在1.6μg/mL～8.0μg/mL与吸光度成良好的线性关系,相关系数0.9996,平均回收率99.4%,相对标准偏差为0.6%(n=5)。黄芩甙的薄层色谱鉴别,薄层色谱斑点清晰、空白无干扰,重现性好。结论:该制剂生产工艺简单,质量标准简单易行,产品质量容易控制。     

兽药生产过程中导致产品不符合质量标准的问题分析

从质量标准的角度,论述了兽药生产企业在生产过程中,导致产品不符合质量标准的几种问题,并对这些问题进行了分析,意在引起企业的注意,减少不合格产品。     

乙酸镁对氟烷基因杂合子育肥猪肌肉加工品质的影响

育肥猪屠宰前饲粮中短期添加乙酸镁,研究其对氟烷基因杂合子育肥猪肌肉加工品质的影响。选用体重相近的氟烷基因杂合子(HalNHaln)大长猪(大白猪×长白猪)36头随机分为2组,即对照组、乙酸镁组,每组18头。乙酸镁组在屠宰前5 d,基础日粮中添加镁1 500mg/kg(以乙酸镁形式),对照组饲喂基础日粮。试验表明:在猪屠宰前饲粮中短期添加1 500 mg/kg水平的镁对试验猪的平均日采食量没有明显影响(P>0.05);可以显著降低肌肉的滴水损失(P<0.05),提高猪肉的熟肉率,从而提高猪肉的加工品质。     

在语文教学中如何培养学生的“创新精神”？

创新是一个民族进步的灵魂,是国家兴旺发达的不竭动力源泉。因此,对创新人才的培养,应该从基础教育抓起。为了在语文教学中培养学生的“创新精神”,教师首先应转变观念,使自己成为有创新精神的人。其次为学生创设和谐、民主的学习氛围,让学生最大限度地发展创造性思维能力。应让学生丰富知识、夯实基础、拓展视野,为创新思维的发展打下坚实的基础。     

绒山羊皮肤毛囊兴盛前期组织形态、chi-miR-107-3p与RHBDF2基因表达分析

为了探究chi-miR-107-3p和菱形家族蛋白2（rhomboid family member 2,RHBDF2）基因在不同品种（系）和光控增绒绒山羊兴盛前期（5~7月份）皮肤毛囊重建时的表达差异,本试验在7月份采集内蒙古阿拉善型绒山羊、敏盖绒山羊和光控增绒技术处理的阿尔巴斯型绒山羊体侧皮肤毛囊组织,采用组织切片技术对组织形态比较分析,实时荧光定量PCR法检测chi-miR-107-3p和RHBDF2基因的表达量。结果显示,在皮肤毛囊兴盛前期,阿拉善型绒山羊次级毛囊正处于重建阶段,敏盖绒山羊和阿尔巴斯型绒山羊（光控增绒）次级毛囊重建已基本完成;在阿拉善型绒山羊皮肤组织中chi-miR-107-3p表达量极显著高于敏盖绒山羊和阿尔巴斯型绒山羊（光控增绒）（P<0.01）,而RHBDF2基因表达量极显著低于其他两品种（系）（P<0.01）,且RHBDF2基因表达量在敏盖绒山羊皮肤组织中显著低于阿尔巴斯型绒山羊（P<0.05）。不同品种（系）和光控增绒绒山羊皮肤毛囊兴盛前期组织显微结构与chi-miR-107-3p、RHBDF2基因在皮肤组织中的表达差异分析结果相一致,次级毛囊重建初期chi-miR-107-3p表达量较高,而RHBDF2基因表达量极低,随着次级毛囊重建完成,chi-miR-107-3p表达量明显降低,RHBDF2基因表达量逐渐增高,且在不同品种（系）内蒙古绒山羊绒毛生长发育过程中的表达机制基本相同。因此,chi-miR-107-3p和RHBDF2基因是绒山羊皮肤毛囊生长发育的重要调控因子。     

骆驼乳研究进展

本文介绍了骆驼乳的营养和生物学价值,影响骆驼乳品质的因素,以及骆驼乳掺假鉴定技术,展望了骆驼乳的开发前景,以期为骆驼乳的研究提供理论依据.     

口蹄疫悬浮灭活疫苗质量控制措施

结合几年来的口蹄疫生产质量管理实践,对质量控制的意义及质量控制的保证措施（原辅料、工艺、检验等方面对质量控制措施）等方面进行了综述和探讨,为建立科学合理的质量控制措施,保证产品质量提供参考.