Action of sodium selenite and choline selenite on the level of erythrocytic glutathione peroxidase (GSH-Px) in cattle deficient in selenium     

U Dotta  A Cagnasso  O Abate  R Guglielmino  S Prato  V Colombatti Valle  A Gazzola 《Schweizer Archiv für Tierheilkunde》1988,130(2):55-66

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Partial substitution of soybean meal by Gliricidia sepium or Guazuma ulmifolia leaves in the rations of growing lambs     

Francisco Alejandro Castrejón-Pineda  Paulina Martínez-Pérez  Luis Corona  José Luis Valle Cerdán  Germán David Mendoza 《Tropical animal health and production》2016,48(1):133-137

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Performance,nitrogen balance and microbial efficiency of beef cattle under concentrate supplementation strategies in intensive management of a tropical pasture     

Tiago Cunha Rocha  Carlos Augusto de Alencar Fontes  Renata Tavares Soares da Silva  Elizabeth Fonsêca Processi  Felipe Roberto Amaral Ferreira do Valle  Cláudio Teixeira Lombardi  Ronaldo Lopes Oliveira  Leilson Rocha Bezerra 《Tropical animal health and production》2016,48(3):673-681

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Kinetics of energy source utilization in Boophilus microplus (Canestrini, 1887) (Acari: Ixodidae) embryonic development     

Campos E  Moraes J  Façanha AR  Moreira E  Valle D  Abreu L  Manso PP  Nascimento A  Pelajo-Machado M  Lenzi H  Masuda A  Vaz Ida S  Logullo C 《Veterinary parasitology》2006,138(3-4):349-357

The present work evaluates the kinetics of utilization of the main potential energy sources throughout the embryonic developmental stages of Boophilus microplus. The embryonic development of this arthropod is completed in 21 days. Cellularization of the blastoderm occurs on the 6th day and is rapidly followed by germ band extension and segmentation, whose first signs are visible on the 7th day. Cellularization is typically a maternal-driven process, carried out by molecular determinants deposited in the oocyte during oogenesis. On the other hand, segmentation is of zygotic nature, being the consequence of the synthesis of various components by the growing embryo. The enhancement in total B. microplus RNA was observed after cellularization, corroborating the replacement of maternal-driven processes by embryonic zygotic expression. An abrupt increase in oxygen consumption was observed from cellularization until the 8th day of development. The reduction in dry weight at the same period and the susceptibility of oxygen consumption to KCN suggest that the respiration process is activated during early embryonic development. A marked decrease in total lipid content occurred between the 5th and 7th days of development, suggesting this is the main energy source for cellularization. A major reduction in carbohydrate content occurred later, between the 7th and 9th days, and it could be assigned to the morphological segmentation of the embryo. Although the total amount of proteins remains unchanged from oviposition to hatching, a 15% reduction in vitellin (VT) content was observed before cellularization, up to the 4th day after egglaying. This observation was correlated to the synthesis of new proteins needed to support early embryo development. Additional 20% of VT was consumed thereafter, mainly at the end of embryogenesis, and in this case VT is probably used as energy source to the older embryo. Altogether, these data indicate different energy sources for maternal and zygotic driven processes.  相似文献   

Site index for teak in Colombia     

Danny A. Torres  Jorge I. del Valle  Guillermo Restrepo 《林业研究》2012,23(3):405-411

Determination of site quality is a basic tool for proper selection of locations and species, in management of forest plantations.Throughout the Caribbean studies of site quality are few and are hampered by statistical limitations, inappropriate growth models, and limited data. We fitted growth curves for dominant height to evaluate and classify site quality of teak (Tectona grandis) plantations by using data from 44 permanent sample plots established since 1990 in 3 22 years old teak plantations in the Colombian Caribbean region. We used Korf’s and von Bertalanffy’s models to fit curves as nonlinear effects models. Both models, with a single random parameter, were considered as adequate for dominant height growth modelling, but Korf’s model was superior. There sulting curves were anamorphic and closely reflected high variability insite quality. Five site classes were clarified: at a base age of 12 years old,teak reached a mean dominant height of 24.8 m on the best sites, 9.8 m inthe worst sites, and in the averages sites, 15.8-18.8 m. Using this model,we identified the best and the worst sites for teak plantations in the Caribbean region. This model proved a useful tool, not only for site quality evaluation, but also for improved teak plantation planning and management.  相似文献   

Wnt/β-catenin signaling regulates telomerase in stem cells and cancer cells     

Hoffmeyer K  Raggioli A  Rudloff S  Anton R  Hierholzer A  Del Valle I  Hein K  Vogt R  Kemler R 《Science (New York, N.Y.)》2012,336(6088):1549-1554

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Meiotic stability in two valuable interspecific hybrids of Brachiaria (Poaceae)     

Mariana F. Felismino  Maria S. Pagliarini  Cacilda B. Do Valle  Rosângela. M. S. Resende 《Plant Breeding》2012,131(3):402-408

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Lipid Utilization Pathways Induced by Early Training in Standardbred Trotters and Thoroughbreds     

Anna Assenza  Francesco Tosto  Giuseppe Piccione  Francesco Fazio  Joana Nery  Emaneula Valle  Domenico Bergero 《Journal of Equine Veterinary Science》2012

Controversial results on lipid utilization as an energy source during training in horses are found in the literature. The objective of this study was to assess blood lipid profile during different training programs in horses. Seventeen Standardbred horses (400 ± 50 kg) and 17 Thoroughbred horses (380 ± 15 kg) followed different training programs. Blood lipid profile, including triglycerides (TGs), total cholesterol, high-density lipoprotein (HDL), and low-density lipoprotein (LDL), was analyzed, and very-low-density lipoprotein (VLDL) concentration was calculated. Data were analyzed using Student t test, and linear regressions were done. Cholesterol and LDL decreased during training programs in Standardbred trotters (P = .0001 and P = .0053, respectively), and VLDL was found to be close to the significance level (P = .053). Blood lipid profile, including TGs (P = .0014), cholesterol (P = .0057), HDL (P = .0128), LDL (P = .0091), and VLDL (P = .0014), varied throughout the training program in Thoroughbred horses. Negative slope of blood lipids and positive slope of TG linear regression in Standardbred trotters were significant for all parameters (P ≤ .05), whereas cholesterol and LDL regression showed poor P and r² values and HDL P value was slightly above the significance level (P = .069) in Thoroughbred horses. TGs and VLDL showed a positive linear trend in Thoroughbred horses (P = .002). Exercise and different training programs lead to significant variations of lipid profile and lipid utilization in horses. Lipid utilization as an energy source improved with training in Standardbred trotters, whereas this was not the case in Thoroughbred horses. Further studies on the effect of training programs using different conditions and horse breeds would be necessary to understand lipid utilization as an energy source in athletic horses.  相似文献   

中国畜牧业协会禽业分会2008年工作总结及2009年工作计划     

中国畜牧业协会禽业分会 《中国禽业导刊》2009,26(6)

2008年对于中国家禽业而言是不平凡的一年,三聚氰胺事件、饲料安全问题、原料价格波动、人感染禽流感等等困扰着整个行业。同样对中国畜牧业协会禽业分会而言,更是忙碌而充实的一年,禽业分会的全体工作人员。始终贯彻“服务行业、服务企业、服务政府”的理念积极主动地开展工作,在工作中充分发挥协会“协调、自律、沟通、维权”的功能,使各项工作开展得井然有序,  相似文献   

Metabolic changes associated with anaesthesia and cherry poisoning in a pony     

Martina Mosing Dr med vet  Diplomate ECVAA    Jan M Kuemmerle† Dr med vet    Agnes Dadak‡ PhD  & Yves PS Moens Dr med vet  PhD  Diplomate ECVAA 《Veterinary anaesthesia and analgesia》2009,36(3):255-260

Observations  A case of a pony with severe cyanide intoxication as a result of cherry ingestion is presented. General anaesthesia was performed for colic surgery. Severe metabolic lactate acidosis in combination with a high arterial oxygen partial pressure and clinically good peripheral perfusion parameters were the remarkable signs during anaesthesia. Severe hypothermia was obvious during recovery. Ten hours post-surgery the pony was euthanized as a result of neurological signs. The diagnosis of cyanide intoxication was made post-mortem.
Conclusion  Cherry ingestion can lead to lethal cyanide intoxication in horses indicated by severe nonhypoxic lactic acidosis during anaesthesia.  相似文献