稻鸭共生对鸭肉品质和屠宰性能的影响   总被引：3，自引：0，他引：3  

卢跃红  戴志明  张曦  魏红江  万田正治  中西良孝  韩自鸿 《中国家禽》2009,31(5)

以云南麻鸭为试验材料,分别在稻鸭共生(稻鸭组)和常规网上平养(常规组)两种饲养模式下饲养至体重达1.8 kg,测定其常规肉品质和部分屠宰性能.结果表明:①两组间鸭肉失水率、嫩度、熟肉率、肉色亮度值和红度值无显著差异(P＞0.05);稻鸭组的pH值显著高于常规组(P＜0.05);肉色黄度值B极显著高于常规组(P＜0.01).②两组间屠宰率、半净膛率、全净膛率、胸肉率差异不显著(P＞0.05);稻鸭组的皮脂厚、腹脂率比常规组分别降低了18.52%、11.76%(P＜0.05);腿肉率提高了11.40%(P＜0.05).③稻鸭组的生长速度明显慢于常规组.  相似文献   

Changes in endogenous cytokinin-like substances and growth inhibitors in freesia corms during high-temperature treatment for breaking dormancy     

Masaharu Masuda  Tadashi Asahira 《Scientia Horticulturae》1978,8(4):371-382

High summer temperatures are required to break dormancy of freesia corms and cormels. Endogenous cytokinin levels were low in corms at the lifting-date, 25 May, but increased after 3 months storage at 30°C. Cytokinin levels in cormels increased gradually during summer storage at natural room temperature, reaching a maximum on 25 August when cormels had the capacity to sprout, then decreased to low levels on 25 September. Inhibitor levels in cormels decreased gradually during storage. A zeatin riboside-like compound, water-soluble cytokinins and an abscisic acid-like compound were present in freesia corms. Dormant corms, soaked for 18 h in 1000 mg/l benzyladenine solution, showed 100% sprouting. We conclude that high temperatures cause a decrease in inhibitors and an increase in cytokinins, which together result in the breaking of the dormant state of corms and cormels of freesia.  相似文献   

Genomic organization of the chicken T-cell receptor beta chain D-J-C region     

Shigeta A  Sato M  Kawashima T  Horiuchi H  Matsuda H  Furusawa S 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2004,66(12):1509-1515

We examined overlapping genomic clones containing the chicken T cell receptor (TCR) Dbeta-Jbeta-Cbeta complex, which contains a single diversity segment, four joining segments and four exons that encode the constant region. This sequence comprised 18.3 kb. All four Jbeta sequences possessed typical recombination signal sequences (RSS) with intervening 12-bp spacers at their 5'-ends and splice sites at their 3'-ends. No Jbeta-pseudogenes were identified. TGTG sequences in the RSS heptamer sequences were well conserved, as is the case in mammals. A chicken repeat 1-like sequence was found in the intron region between Jbeta-1336 and Cbeta, and several small repeat sequences were identified in intron regions throughout this cloned genome. As germline sequences revealed complete Jbeta sequences, the CDR3 (complementarity-determining region) sequences of TCRbeta from non-immunized splenocytes were analyzed. Non-coding (N) and palindromic (P) nucleotides were frequently observed at the Dbeta-Jbeta recombination sites. There were differences in length of deletion at the 5'-end of each Jbeta. Deletion of the 5'-end of Jbeta-1280 was particularly short when compared with that of Jbeta-1336, but there were no changes in the length of the CDR3 using any of the four Jbeta sequences.  相似文献   

Characterization of a newly established nonproducer lymphoma cell line for feline leukemia virus     

Fujino Y  Ma Z  Satoh H  Mizuno T  Hisasue M  Baba K  Masuda K  Ohno K  Onishi T  Tsujimoto H 《Veterinary immunology and immunopathology》2004,102(4):429-439

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Molecular cloning of the canine c-Met/HGF receptor and its expression in normal and regenerated liver   总被引：4，自引：0，他引：4  

Neo S  Kansaku N  Furuichi M  Watanabe M  Hisamatsu S  Ohno K  Hisasue M  Tsuchiya R  Yamada T 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2005,67(5):525-529

The c-Met proto-oncogene is the receptor for hepatocyte growth factor (HGF), which is a member of the tyrosine kinase family. Activation of the HGF/c-Met signal pathway leads to cell proliferation, motility, regeneration, and morphogenesis. In this study, the complete nucleotide sequence of complementary DNA (cDNA) of canine c-Met was cloned, and its distribution was determined in tissues. The canine c-Met cDNA clone had an open reading frame of 4419 bp that encoded a putative polypeptide of 1383 amino acids. The c-Met mRNA was expressed in a variety of canine tissues including peripheral blood mononuclear cells (PBMC), bone marrow, liver, kidney, lung, stomach, uterus, testis, thymus, lymph node, small intestine, colon, adrenal gland, thyroid gland, heart, muscle, skin, pancreas, ovary, prostate, spleen, fat, cerebrum, and cerebellum. In addition, the c-Met mRNA expression in normal and regenerated liver was examined. The levels of the mRNA increased 2-fold in regenerated liver compared to that found in normal liver, indicating that c-Met is involved in various functions including remodeling of canine hepatocytes.  相似文献   

云南稻-鸭共生模式效益的研究及综合评价（三）   总被引：15，自引：0，他引：15  

戴志明  杨华松张 曦 周晓智韩自鸿 余杨钱国平  张树清万田正治 中西良孝 魏红江 《中国农学通报》2004,20(4):265-265

通过不同放鸭只数的试验,研究了在中高产田单位面积放鸭的数量与产量构成因素和病虫草害发生的关系,分析了产量构成,病虫草害发生的情况,为稻－鸭共生模式技术的推广提供理论依据。  相似文献   

Tocopherol affinity for serum lipoproteins of Japanese flounder Paralichthys olivaceus during the reproduction period     

Masaharu Tokuda  Toshiyasu Yamaguchi  Kunihiro Wakui  Toshihiko Sato  Masao Ito and  Masaaki Takeuchi 《Fisheries Science》2000,66(4):619-624

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Genotypic Variation in Shoot Cadmium Concentration in Rice and Soybean in Soils with Different Levels of Cadmium Contamination   总被引：4，自引：0，他引：4  

Satoru Ishikawa  Noriharu Ae  Megumi Sugiyama  Masaharu Murakami  Tomohito Arao 《Soil Science and Plant Nutrition》2005,51(1):101-108

A pot experiment was conducted to investigate whether the shoot cadmium (Cd) concentration in 11 rice and 10 soybean cultivars varied among 4 soils with different levels of Cd contamination. Significant differences in shoot Cd concentration were found among rice or soybean cultivars grown in the 4 soils. The ranking of the rice cultivars for the shoot Cd concentration varied considerably among the soils. On the other hand, the soybean cultivars were ranked similarly in terms of shoot Cd concentration in the 4 soils. Significant and positive correlations were found between the Cd and Zn concentrations and between the Cd and Mn concentrations in the shoot of rice cultivars, when they were grown in 2 soils with relatively moderate levels of Cd contamination. The shoot Cd concentration in the soybean cultivars, however, was not correlated with the concentrations determined for any of the metals (Zn, Mn, Cu, and Fe) across the 4 soils. Significant and positive correlations between the concentrations of Cd in younger shoots and mature seeds were detected among the soybean cultivars in 2 soils used, unlike among the rice cultivars, indicating that it may be difficult to evaluate the genotypic variation in seed Cd concentration using relatively younger shoots in the case of rice. These results revealed that genotypic differences in shoot Cd concentration in rice or soybean are variable or invariable among soils, respectively.  相似文献   

Is Brassica juncea a suitable plant for phytoremediation of cadmium in soils with moderately low cadmium contamination? – Possibility of using other plant species for Cd-phytoextraction     

Satoru ISHIKAWA  Noriharu AE  Masaharu MURAKAMI  Tadao WAGATSUMA 《Soil Science and Plant Nutrition》2006,52(1):32-42

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Response of pepper and eggplant to continuous light in relation to leaf chlorosis and activities of antioxidative enzymes     

Ephraim N. Murage  Masaharu Masuda 《Scientia Horticulturae》1997,70(4):269-279

Activities of the oxygen radical-scavenging enzymes were determined in leaves of ‘Kyomidori’ pepper (Capsicum annuum L.) and ‘Senryo’ eggplant (Solanum melongena L.) seedlings under two photoperiod treatments; 12 h light/12 h dark (12/12 h) or with continuous light (24/0 h) for six days. Growing eggplant under continuous light resulted in leaf chlorosis after four days and a sharp decline in the chlorophyll content. In eggplants grown under 24/0 h photoperiod, the activities of antioxidative enzymes; superoxide dismutase (SOD), catalase (CAT) and peroxidase (POD) rapidly increased from day two. This was an indication of photooxidative damage. In contrast, leaf chlorosis did not occur in pepper plants grown under continuous light, while the chlorophyll content was even higher in the 24/0 h than in the 12/12 h photoperiod. Continuous light did not enhance the activities of SOD and POD in leaves of pepper. However, the CAT activity increased faster and was significantly higher in pepper than in eggplants grown under continuous illumination. Pepper plants did not appear to suffer from photooxidative damage and thus grew normally under continuous illumination.  相似文献