青贮饲料的特性   总被引：2，自引：0，他引：2  

刘晗璐  塔娜  桂荣 《湖北农业科学》2009,48(10)

青贮可以通过适宜的发酵,使作物的营养成分损失最小,并能满足家畜冬春季节及全年对饲料及营养物质的需求.青贮饲料与调制干草相比具有很多独特优势,对其独特的发酵特性进行了简单的分析和概述.  相似文献   

Vertebral lymphosarcoma as the cause of hind limb paresis in a horse     

D H Zeman  T G Snider  J J McClure 《Journal of veterinary diagnostic investigation》1989,1(2):187-188

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Frequency of pancreatic amyloid deposition in cats from south-eastern Queensland     

TA LUTZ  J. AINSCOW  JS RAND 《Australian veterinary journal》1994,71(8):254-256

Summary Stereological procedures were used to estimate the amount of amyloid deposition in the pancreatic islets of 83 cats from random sources in south-eastern Queensland. Most had only minor deposits of less than 20% of islet volume (median 9%), but deposits equal to more than 50% of the islet volume were found in 10% of the cats. Amyloid deposition in pancreatic islets was correlated with the age of the cat. Although similar observations have been made previously in cats from the USA, the frequency of amyloid deposition was higher in this population of cats from south-eastern Queensland.  相似文献   

In vitro and in vivo immune responses in neonatally thymectomized holstein-friesian calves exposed to bovine viral diarrhea virus     

Theron G Snider  Stewart McConnell  L.Garry Adams  Kenneth R Pierce 《Comparative immunology, microbiology and infectious diseases》1981,4(1):9-19

Neonatally thymectomized and normal Holstein-Friesian calves were exposed to bovine viral diarrhea virus and challenged 22 days later. Baseline values in non-specific mitogen induced lymphocyte blastogenesis and serologic responses to tetanus toxoid and Brucella abortus strain 19 were established in neonatally thymectomized and normal calves.Neither viral recovery nor protective antibody production followed the very low level primary exposure to bovine viral diarrhea virus. The expected clinical response to an appropriate challenge inoculum did not occur, however, suggesting an immune response to bovine viral diarrhea virus had been initiated by the primary exposure. Five of eight calves developed protective serum levels of bovine viral diarrhea antibody. This may represent an example of immunologic priming. Exposure to low levels of bovine viral diarrhea virus also has potential implications in the pathogenesis of chronic bovine viral diarrhea wherein low level exposure may interfere with the development of protective levels of bovine viral diarrhea antibody as was observed in three calves.Circulating lymphocyte concentrations and results of non-specific mitogen stimulation of lymphocytes revealed a reduced phytohemagglutinin response in conjunction with a slightly increased response to bacterial lipopolysaccharide and pokeweed mitogen in the presence of moderate lymphopenia. The capacity of lymphocytes to respond to phytohemagglutinin was unchanged but an increased total response, as occurred in control thymectomized and intact calves, did not occur.The response to tetanus toxoid, a thymus-independent antigen, was increased following exposure to bovine viral diarrhea virus, perhaps reflecting an alteration in thymic-independent regulation. The lack of a differential response to Brucella abortus strain 19 implied competence in thymus-dependent helper cells.  相似文献   

Novel polymorphism of the canine dopamine receptor D4 gene intron II region     

Hidetoshi NARA  Miho INOUE-MURAYAMA  Akiko KOSHIMURA  Akinori SUGIYAMA  Yuichi MURAYAMA  Masami MAEJIMA  Yuko UEDA  Hideyuki ITO  Ettore RANDI  Heui-Soo KIM  Ji-Hong HA  Hitoshi KITAGAWA  Yukari TAKEUCHI  Yuji MORI  Toshiroh IWASAKI  Mitsuo MORITA  Katuaki ÔTA  Shin'ichi ITO 《Animal Science Journal》2005,76(1):81-86

Various dog breeds are remarkably different from each other not only in their sizes and shapes but also in behavioral traits, suggesting that some of these characteristics are under genetic control. However, little is known about genes related to behavioral traits in canine species. In humans, it has been reported that the dopamine receptor D4 gene (DRD4) includes polymorphism at several regions that relate to personality or psychiatric disorders. In an earlier study by the authors of the present study, the polymorphisms in canine DRD4 exon III and exon I regions were reported. In the present study, a novel polymorphism in canine DRD4 intron II was found based on a 17 base pair insertion/deletion, and the two alleles detected were named P (shorter allele) and Q (longer allele). The allelic distribution in 28 breeds of dog, including a total of 1114 unrelated individuals, were then investigated. Both P and Q alleles were detected in most of the breeds investigated; however, the frequencies of P and Q differed greatly between breeds. With respect to classification based on breed origin, P and Q alleles were frequent in Occidental and Oriental breeds, respectively. Furthermore, two subspecies of wolves, the ancestors of dogs, were analyzed for the comparison of allele frequencies with dogs, and the P allele was predominant in both European and Chinese wolves.  相似文献   

新疆天然甜型葡萄酒原料种植区划研究          下载免费PDF全文

宋于洋  塔依尔 《干旱地区农业研究》2007,25(4):51-55

运用层次分析法和模糊数学综合评判方法,根据石河子、昌吉、吐鲁番等8个地区的无霜期、温度、积温和降水因素,建立了数学模型,并对新疆天然甜型葡萄酒原料种植区域进行了区划研究.结果表明:吐鲁番的综合评价最高,其次为和田,评价值分别为0.97和0.91,属非常适宜种植区;哈密和喀什的评价值分别为0.81和0.87,属适宜种植区;库尔勒的为0.71,属次适宜种植区,而石河子、昌吉和霍城的评价值均小于0.59,属不适宜种植区.  相似文献   

Cell biology. GSK-3beta and microtubule assembly in axons     

Zhou FQ  Snider WD 《Science (New York, N.Y.)》2005,308(5719):211-214

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乳酸菌添加剂对禾本科混合牧草青贮发酵特性的影响   总被引：4，自引：0，他引：4  

刘晗璐  桂荣  塔娜 《畜牧兽医学报》2008,39(6)

选用分离于青贮原料牧草天然附着的植物乳杆菌（Lactobacillus plantarum）和蒙氏肠球菌（Enterococcusmundtii）作为添加剂,进行披碱草和老芒麦混合牧草青贮发酵特性的研究。试验分4个处理：球菌组（Em）、杆菌组（Lp）、球菌＋杆菌组（EL）、对照组（Con,不添加）。实验室常温发酵。试验期60 d。结果表明：（1）与Con组相比,Em、Lp以及EL组均明显降低青贮pH（P〈0.05）。（2）Em与Lp以及EL组都明显增加乳酸含量（P〈0.05）,以及乳酸与乙酸的比值,其中EL组增加效果最显著（P〈0.05）;此外3个添加组丙酸及丁酸的含量明显下降（P〈0.05）。（3）EL组显著降低青贮中NH3-N含量（P〈0.05）,Em、Lp组也有降低的趋势,但未达显著水平（P〉0.05）。（4）添加乳酸菌可以降低青贮DM的损失量,与对照组相比Em、Lp以及EL组DM的损失量分别降低了38.4%、43.4%、23.4%。综上所述添加乳酸菌可以改善试验牧草青贮发酵品质,球菌＋杆菌组（EL组）对试验牧草青贮品质改善效果最优。  相似文献   

Effectiveness of controlled internal drug release device treatment to alleviate reproductive seasonality in anestrus lactating or dry Barki and Rahmani ewes during non‐breeding season          下载免费PDF全文

MY EL‐Mokadem  ANM Nour El‐Din  TA Ramadan  AM Rashad  TA Taha  MA Samak  MH Salem 《Reproduction in domestic animals》2018,53(2):319-325

This study aimed to evaluate the effectiveness of hormonal treatments on ovarian activity and reproductive performance in Barki and Rahmani ewes during non‐breeding season. Forty‐eight multiparous ewes, 24 Barki and 24 Rahmani ewes were divided into two groups, 12 lactating and 12 dry ewes for each breed. Controlled internal drug release (CIDR) device was inserted in all ewes for 14 days in conjunction with intramuscular 500 IU equine chronic gonadotrophin (eCG) at day of CIDR removal. Data were analysed using PROC MIXED of SAS for repeated measures. Breed, physiological status and days were used as fixed effects and individual ewes as random effects. Barki ewes recorded higher (p < .05) total number of follicles, number of large follicles, serum estradiol concentration and estradiol: progesterone (E₂:P₄) ratio compared to Rahmani ewes. Lactating ewes recorded higher (p < .05) number of small follicles and lower concentration of total antioxidant capacity (TAC) compared to dry ewes. Number and diameter of large follicles recorded the highest (p < .05) values accompanied with disappearance of corpora lutea at day of mating. Serum progesterone concentration recorded lower (p < .05) value at day of mating and the highest (p < .05) value at day 35 after mating. CIDR‐eCG protocol induced 100% oestrous behaviour in both breeds, but Rahmani ewes recorded longer (p < .05) oestrous duration compared to Barki. Conception failure was higher (p < .05) in Barki compared to Rahmani ewes. In conclusion, CIDR‐eCG protocol was more potent in improving ovarian activity in Barki compared to Rahmani ewes, but this protocol seems to induce hormonal imbalance in Barki ewes that resulted in increasing conception failure compared to Rahmani ewes.  相似文献   

Phenotypic and genotypic profiling of antimicrobial resistance in enteric Escherichia coli communities isolated from finisher pigs in Australia          下载免费PDF全文

MG Smith  D Jordan  JS Gibson  RN Cobbold  TA Chapman  S Abraham  DJ Trott 《Australian veterinary journal》2016,94(10):371-376

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