DCAB对荷斯坦奶牛泌乳性能、血液酸碱平衡及血清矿物质含量的影响   总被引：8，自引：0，他引：8  

吴文旋  李菊娣  刘建新 《中国奶牛》2005,(2):15-17

试验选用荷斯坦泌乳早期奶牛15头,采用3X3复拉丁方试验设计,研究日粮DCAB水平分别为+367、+514、+663mmol/kgDM对奶牛生产性能、血液酸碱平衡和血清矿物质含量的影响。试验结果,不同DCAB水平日粮对奶牛奶产量差异不显著(P>0.05),高DCAB水平日粮可增加奶牛血液标准HCO-3含量(P<0.05),不同DCAB水平对奶牛各种血清常量矿物质含量没有影响(P>0.05)。试验表明,日粮DCAB水平超过+514mmol/kgDM可对奶牛奶产量产生不利影响。  相似文献   

高海拔地区鸡胚发育关键因素研究     

张浩  吴常信  强巴央宗  唐晓惠 《中国家禽》2005,27(8):8-10

对藏鸡(T)、饲养在北京的藏鸡(TB)、矮小隐性白(D)、农大小型蛋鸡商品代种蛋(M)、寿光鸡(S)、藏鸡×矮小隐性白(TD)、藏鸡×寿光鸡(TS)7组种蛋在西藏林芝进行孵化研究,通过阶段死亡率、出雏率、失水率数据分析了影响高海拔地区胚胎发育的关键因素。结果表明胚胎本身的高原生活力是鸡蛋高海拔孵化主要因素,其次是蛋壳传导力。  相似文献   

Transcriptome profiling to identify key mediators of granulosa cell proliferation upon FSH stimulation in the goose (Anser cygnoides)     

L. Du  T. Gu  Y. Zhang  Zhengyang Huang  N. Wu  W. Zhao 《British poultry science》2018,59(4):416-421

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Roles of spermine in modulating the antioxidant status and Nrf2 signalling molecules expression in the thymus and spleen of suckling piglets—new insight          下载免费PDF全文

G. Jia  H. Zhao  X. Chen  C. Wu  J. Tang  J. Wang  J. Cai  G. Liu 《Journal of animal physiology and animal nutrition》2018,102(1):e183-e192

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Methyl donors dietary supplementation to gestating sows diet improves the growth rate of offspring and is associating with changes in expression and DNA methylation of insulin‐like growth factor‐1 gene          下载免费PDF全文

Yang Zhao  Yuedong Xuan  Daolin Mou  Hong Liu  Pan Zhou  Zhengfeng Fang  Lianqiang Che  Shengyu Xu  Bin Feng  Jian Li  Xuemei Jiang  Yan Lin  De Wu 《Journal of animal physiology and animal nutrition》2018,102(5):1340-1350

The study aimed to investigate the effects of maternal dietary methyl donors on the performance of sows and their offspring, and the associated hepatic insulin‐like growth factor‐1 (IGF‐1) expression of the offspring. A total of 24 multiparous sows were randomly fed the control (CON) or the CON diet supplemented with methyl donors (MD) at 3 g/kg betaine, 15 mg/kg folic acid, 400 mg/kg choline and 150 μg/kg VB₁₂, from mating until delivery. After farrowing, sows were fed a common lactation diet through a 28‐days lactation period and six litters per treatment were selected to be fed until at approximately 110 kg BW. Maternal MD supplementation resulted in greater birthweight (p < 0.05) and increased the piglet weights (p < 0.01) and litter weights (p < 0.05) at the age of day 28, compared with that in CON group. The offspring pigs in the MD group had greater ADG (p < 0.05) and tended to lower F:G ratio (p = 0.07) compared with that of CON group from day 28 to 180 of age. The offspring pigs from MD group had greater serum IGF‐1 concentrations and expressions of hepatic IGF‐1 gene and muscular IGF‐1 receptor (IGF‐1r) protein at birth (p < 0.05), and greater hepatic IGF‐1 protein (p = 0.03) and muscular IGF‐1r gene expressions (p < 0.05) at slaughter, than that from the CON group. Moreover, the methylation at the promoter of IGF‐1 gene in the liver of newborn piglets and finishing pigs was greater in the MD group than that of the CON group (p < 0.05). In conclusion, maternal MD supplementation throughout gestation could enhance the birthweight and postnatal growth rate of offspring, associated with an increased expression of the IGF‐1 gene and IGF‐1r, as well as the altered DNA methylation of IGF‐1 gene promotor.  相似文献   

Differential effects of follistatin on porcine oocyte competence and cumulus cell gene expression in vitro          下载免费PDF全文

Z Guo  D Liu  G Liu  L Lv  Y Yang  B Fu  L Wang  Z Liu  H He  H Wu 《Reproduction in domestic animals》2018,53(1):3-10

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Comparative analysis of ovarian transcriptomes between prolific and non‐prolific goat breeds via high‐throughput sequencing          下载免费PDF全文

X‐D Zi  J‐Y Lu  H Zhou  L Ma  W Xia  X‐R Xiong  D‐L Lan  X‐H Wu 《Reproduction in domestic animals》2018,53(2):344-351

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饲用荞麦在畜牧业中的应用与研究   总被引：1，自引：0，他引：1  

丁梦琦  吴燕民  未丽  唐宇  王成龙  杨富裕  邵继荣  周美亮 《草业科学》2018,35(1):176-185

荞麦(Fagopyrum esulentum)原产于中国,其栽培种甜荞和苦荞在世界各地已被广泛种植,我国西南地区蕴含着丰富的野生荞麦资源。荞麦营养丰富,除含有常见的蛋白质、纤维素和糖类外,还富含芦丁等抗氧化物质,具有耐瘠薄、抗病虫害、适应性强、生长迅速等优点,特别是一些野生种叶片大、叶量多,更适合于刈割,这些优点使其成为一种很具有发展潜力的优质牧草资源。但目前荞麦的饲用价值仍未得到充分的发掘与利用。本文着重介绍了荞麦在我国的栽培、饲用历史和现状,结合荞麦饲用于猪、反刍动物及家禽等方面的研究进展,分析了荞麦在饲用化发展中将面临的问题,并对其应用前景进行了评价与展望。  相似文献   

基质对黑果腺肋花楸幼苗生长的影响   总被引：1，自引：0，他引：1  

张成霞  孙燕  蔡灿  王香港  吴红 《草业科学》2018,35(3):574-580

以黑果腺肋花楸(Aronia melanocarpa)为试验材料,选用田园土、泥炭土、珍珠岩和黄沙,采用正交试验设计,研究不同基质配比对黑果腺肋花楸成苗率以及幼苗形态指标和生理指标的影响。结果表明,不同育苗基质对黑果腺肋花楸出苗率、苗高、地径、主根长、侧根数和高径比等形态指标以及根系活力、可溶性糖、淀粉和蛋白质等生理指标的影响差异显著,综合分析各项指标,筛选出适合黑果腺肋花楸容器育苗的栽培基质为田园土(40%)+泥炭土(30%)+黄沙(30%)、田园土(40%)+珍珠岩(30%)+黄沙(30%)、田园土(40%)+泥炭土(30%)+珍珠岩(30%)和田园土(60%)+泥炭土(20%)+黄沙(20%)。  相似文献   

羔羊日粮精粗比对其肉及脂肪组织中脂肪酸组成的影响     

安雪姣  文禹粱  宋淑珍  蔡原  吴建平  赵生国 《草业科学》2018,(3):654-662

为了研究不同精粗比日粮对广河羊羔肉品质的影响,在广河县羔羊肉生产区,选择不同精粗比饲喂的6月龄健康陶寒杂交(陶赛特羊♂×小尾寒羊♀)断奶去势公羔各3只进行屠宰,取股二头肌、背最长肌、肱二头肌3个部位肌肉和肾周脂肪、皮下脂肪、尾部脂肪3个部位脂肪,用气象色谱法分析其脂肪酸的种类及含量。结果表明,在所有组织中均检测出38种脂肪酸,其中饱和脂肪酸17种,不饱和脂肪酸21种。脂肪组织中饲喂低精粗比日粮的亚油酸(C18∶2n6c)、α-亚麻酸(C18∶3n3)、饱和脂肪酸(SFA)、多不饱和脂肪酸(PUFA)及其与饱和脂肪酸比值(P/S)、n3系多不饱和脂肪酸和n6系多不饱和脂肪酸均显著高于饲喂高精粗比日粮(P<0.05);饲喂低精粗比日粮的所有组织中花生四烯酸(C20∶4)的含量显著高于饲喂高精粗比日粮(P<0.05);与饲喂高精粗比日粮的羊羔肉相比,饲喂低精粗比日粮既节省了生产成本又明显改善和提高了羊羔肉中脂肪酸的营养价值。  相似文献