13 research outputs found
Performance of Dual-Purpose Cows on a Native Pasture-\u3ci\u3eArachis pintoi\u3c/i\u3e Association in the Humid Tropics of Mexico
Native grasslands (NG) are the main feed supply of dual-purpose (DP) cows of the Mexican humid tropics. NG comprise about 85% of Paspalum, Axonopus and Cynodon species, about 5% of native legumes, mainly of Desmodium, and the remaining 10% are narrow and broad leafed weeds. Arachis pintoi (AP) is a persistent grazing tolerant tropical legume. In association with sown grasses, it has improved dry matter (DM) yield, nutritive quality of forage, and milk yield up to 9 kg/cow/day (González et al., 1996). The objective was to determine if productive performance of DP cows could be improved by the introduction of AP into NG grassland
Rendimiento total de materia seca y calidad nutritiva de hojas y tallos jóvenes de cuatro accesiones de Cratylia argentea en el trópico húmedo de Veracruz, México
Se evaluaron cuatro accesiones de la leguminosa forrajera Cratylia argentea Ciat 18516, 18666, 18668 y 18676, durante un periodo de crecimiento ininterrumpido de 12 meses, para rendimiento de forraje de hojas (HO), tallos comestibles (TC), tallos no comestibles (TN) y calidad nutritiva de HO y TC, en el estado de Veracruz, México. Los rendimientos de forraje por componente de la planta fueron similares entre accesiones: 2580±212, 33±5 y 2444±233 kg MS/ha, para HO, TC y TN, respectivamente. Las accesiones fueron similares en proteína cruda (19.10%), fibra en detergente neutro (61.10%), fibra en detergente ácido (42.20%) y lignina (14.20%). La HO presentó más proteína cruda que TC, pero fue menor con respecto a ndf, adf, y mayor en lig. Para la desaparición in situ de la MS, las accesiones difirieron en la proporción del componente altamente soluble (a) de la materia seca, pero todos tuvieron tasas de degradación fraccional (c) y materia seca lentamente degradable (b), estadísticamente similares. La producción de gas in vitro del componente hoja fue la misma para todas las accesiones. Se concluyó que, en esta evaluación, las accesiones fueron similares entre ellas
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Dissociation between blood pressure reduction and fall in proteinuria in primary renal disease: a randomized double-blind trial
OBJECTIVEGuidelines recommend lower threshold and goal blood pressure (BP) for patients with proteinuria. BP reduction could be accompanied by a different fall in proteinuria depending of the antihypertensive drug. The objective was to compare proteinuria reduction when BP is lowered to the same level with different drugs.DESIGNProspective, randomized, double-blind, controlled trial.SETTING12 Spanish centres.PATIENTSA total of 119 patients with primary renal disease, blood pressure > 130/85 mmHg, proteinuria > 1 g/day, and creatinine clearance > or = 50 ml/min.INTERVENTIONAfter a 4-week run-in placebo period, patients were randomized to: atenolol 50 mg/day; trandolapril 2 mg/day; verapamil 240 mg/day or verapamil 180 + trandolapril 2 mg/day combination; forced double-dose titration was carried out at the 4th week. Treatment duration was 6 months.OUTCOME MEASURESChanges in BP, 24 h proteinuria, serum albumin and calcium.RESULTSBP was significantly reduced with the four treatments [SBP/DBP (mmHg]: atenolol 12.2/9.9; trandolapril 12.9/9.3; verapamil 8.2/7.9 and verapamil + trandolapril 13.6/11.3) without differences between them. A significant fall in proteinuria was seen in the trandolapril, 40.2% [95% confidence interval (CI) 24.3-56.2%], and verapamil + trandolapril groups, 48.5% (95% CI, 31.7-64.3%) accompanied with increases in serum albumin (trandolapril: from 3.86 +/- 0.64 to 4.03 +/- 0.67 g/dl; verapamil + trandolapril: from 4.15 +/- 0.58 to 4.40 +/- 0.51 g/dl).CONCLUSIONSIn patients with proteinuric primary renal disease, adequate dose titration of antihypertensive drugs may provide a substantial BP reduction. Only angiotensin-converting enzyme inhibitor (trandolapril) treatment, alone or better combined with verapamil, reduces proteinuria and increases serum albumin