雷山小香羊母羊部分血液生化指标测定分析

为给雷山小香羊的饲养管理及选育提供科学依据,测定了5月、2岁、3岁小香羊(母羊)20项生化指标.结果表明,香羊血液中甘油三酯、α-羟丁酸脱氢酶、γ-谷氨酰转肽酶、肌酸激酶、肌酸激酶同工酶、乳酸脱氢酶等随小香羊年龄的增长呈下降趋势;而球蛋白、低密度脂蛋白等随小香羊年龄的增长呈增加趋势(P＜0.05);总胆固醇、高密度脂蛋白、总蛋白、白蛋白、白/球比例、谷丙转氨酶、谷草转氨酶、钾、钠、氧、钙等11项指标间无显著差异(P＞0.05).各项血液生化指标的平均值与各年龄间相比无显著性差异(P＞0.05),因此,可以用血液平均生化指标来评价雷山小香羊的健康和营养状况以及为香羊的选育提供理论参考.     

湘学的学术旨趣及近代转型

作为地域性学术思想及文化传统的湘学形成于两宋时期 ,并且表现出一种将道、学、治统一的学术追求。清代道光咸丰以后 ,湘学在学界受到关注 ,今文学派魏源、宋学派曾国藩是这段时期湘学的重要代表。他们虽有不同的师承与学统 ,但是 ,他们的学术旨趣又表现出惊人的相似 ,就是力图将道、学、治统一起来 ,并且推动晚清经世思潮的崛起 ,导致湘学形态的近代转型     

贵州剑河白香猪的肉质常规指标测定（初报）

用同条件下饲养的贵州剑河６月龈的白、黑香猪作肉质常规指标测定,结果其肉色正常;大理石纹分布适中;两猪的ｐＨ值、失水率、熟肉率等指标差异均不显著（Ｐ〉０．０５）。说明剑河白香猪肉质好,是加工高档猪肉产品的最佳原材料。     

日粮磷和钙磷比例对小型猪骨骼性能的影响

36头小型猪 (香猪 )去势公猪 ,通过 3× 3交叉分组设计随机分配到 9个处理中 ,每个处理 4个重复。日粮磷的 3个水平为 0 .3% ,0 .6 %和 0 .9% ;日粮钙磷比例的 3个水平为 1∶ 1,1.2 5∶ 1和 1.5∶ 1。结果表明 ,第四骨骨鲜重随日粮磷水平提高显著增加 (P<0 .0 1)。随日粮磷增加第六肋骨、第四骨和第四骨的骨灰分、灰分钙和灰分钙磷比例显著地提高 (P<0 .0 5) ,而骨灰分磷则显著下降 (P<0 .0 1)。日粮钙磷比例对第六肋骨的骨灰分、灰分磷和灰分钙磷比例作用显著 (P<0 .0 1)。日粮不同磷水平对股骨、肱骨的压断力和弯曲力矩的作用有极显著差异 (P<0 .0 1) ,且当日粮磷水平 0 .9%达到最大值 ,但日粮不同钙磷比例对骨骼压断力和弯曲力矩无显著影响 (P>0 .0 5)     

Reviews

Books reviewed: Ross McLeod and Ross Garnaut (eds), East Asia in crisis: from being a miracle to needing one? Anthony Reid (ed.), Sojourners and settlers: histories of Southeast Asia and the Chinese William Callahan, Imagining democracy: reading ‘the events of May’ in Thailand Lynne T. White, Unstately Power, Volume I: Local causes of China's economic reforms; Volume II: Local causes of China's intellectual, legal and government reforms Michael Young, Malinowski's Kiriwana; fieldwork photography 1915‐1918 Colin Filer with Nikhil Sekhran, Loggers, donors and resource owners. Policy that works for forests and people Michael Dutton (ed.), Streetlife China Kimberly Ann Elliott (ed.), Corruption and the global economy     

Optimal storage temperature and 1-MCP treatment combinations for different marketing times of Korla Xiang pears

Maintenance of green color is the primary indicator of quality in the market evaluation of Korla Xiang pears at present and can generally be achieved through early harvesting and decreasing the storage temperature, but the fruit quality was reduced by early harvesting, and the decreasing storage temperature increased the risk of chilling injury. The objectives of this study were to determine the optimal storage parameters for different storage times and to find ways to preserve the green skin color of pears. Specifically, we analyzed the effects of the ethylene inhibitor, 1-methylcyclopropene(1-MCP), combined with low temperature on quality and maintenance of the green color of Korla Xiang pears during storage. We found that 1-MCP and/or low temperature reduced the loss of green color at 20°C after being removed from cold storage. In addition, 1-MCP significantly inhibited the decline of titratable acid and ascorbic acid but had no significant effect on fruit firmness and total soluble solids. Low temperature with or without 1-MCP inhibited the release of ethylene, inhibited the decline in the stalk preservation index, inhibited the increase in decay rate and weight loss rate during storage, and inhibited the increase in the core browning index after 225 days of storage. Different storage temperatures had different effects on the quality of Korla Xiang pears. Despite inhibiting ethylene release, a storage temperature of –1.5°C increased the respiration rate. Storage at –1.5°C caused core browning early during storage due to chilling injury, whereas at 2°C core browning occurred late during storage due to senescence. In late storage, 1-MCP had no significant effect on the maintenance of Korla Xiang pear quality at 2°C. Based on these results, we determined the optimal combinations of low temperature and 1-MCP treatment to maintain pear quality while avoiding chilling injury. For different marketing times, the optimal conditions for storage until New Year's Day(a storage duration of 90 days) are 2°C or 1-MCP combined with 2°C. For storage until the Spring Festival(a storage duration of 150 days), the optimal conditions are 0°C or 1-MCP combined with 0°C, and for storage until May(a storage duration of 225 days), the best conditions are 1-MCP combined with –1.5°C.     

贵州小香羊MSTN基因内含子2和外显子3的多态性

为贵州小香羊选育及进一步研究MSTN基因与贵州小香羊生长性状的相关性提供理论依据,采用PCR-RFLP方法对67只贵州小香羊MSTN基因内含子2和外显子3进行了多态性分析。结果表明,所扩增内含子2中存在Bsp1286I酶切多态位点,杂合型(AB)为优势基因型,无纯合野生型(AA)和纯合突变型(BB);所扩增内含子2和外显子3中存在BstBI酶切多态位点,杂合型(CD)为优势基因型,纯合野生型(CC)和纯合突变型(DD)为非优势基因型,D等位基因为优势基因,且含有2个TatI正常酶切位点,但不存在多态性,不存在BsmFI酶切位点。     

厦门市翔安区胡萝卜新品种引种试验

2008年厦门市翔安区农林水利局对7个胡萝卜新品种进行田间比较试验,结果表明,盛农7寸和助农大根两品种田间表现比坂田七寸(对照)增产,且综合性状较好,建议进一步扩大生产示范。     

贵州白香猪不同杂交组合后代生长发育指标的测定

试验选用贵州白香猪作为母本,分别以大约克猪、杜洛克猪、长白猪作为父本进行杂交组合试验,测定了3个杂交组合F1代及对照组香猪的初生重、20日龄重及2～6月龄的生长发育指标。结果表明,初生重为杜×香大×香长×香香猪,长×香组与对照组香猪间差异不显著(P0.05);20日龄重为杜×香大×香长×香香猪。生长发育各指标间差异显著,并且随着月龄增加各试验组间生长发育显著性增大,除2月龄体长为杜×香大×香长×香香猪、3月龄体重,体长、胸围、腹围指标及5月龄体高、体长指标为大×香长×香杜×香香猪外,其余月龄生长发育各指标为大×香杜×香长×香香猪。     

湘杂棉8号在不同密度条件下棉株的成铃分布

以湘杂棉8号品种,设6个不同密度处理3次重复,从纵向、横向和圆锥体顺序比较其成铃分布状况。结果表明：各处理成铃率下部高于中部、中部高于上部;内围铃高于外围铃;单株成铃率以12000株/hm^2成铃率最高为42．6％,57000株/hm^2成铃率最低为28．2％;圆锥体成铃率,第1圆锥体以12000株/hm^2和21000株/hm^2两处理的成铃率最高,达到90％,第2、3圆锥体成铃率以12000株／hm^2、21000株／hm^2成铃率高,均超过70％,第4．10圆锥体成铃率随着密度、圆锥体序数的增加而逐渐降低,12000株／hm^2在第5圆锥体的成铃率达到50％以上。