Nutritive value of straw, with special reference to wet-season rice straw as related to variety and location of growth in East-Java, Indonesia.

Variation in nutritive quality between morphological components is less for rice straw than for wheat straw. Wheat straw stems have a lower quality than stems of rice straw, while leaves and leaf sheaths of wheat are of better quality than of rice. Variation in voluntary organic matter intake, and in vivo and in sacco organic matter digestibility was studied with straw of 10 rice varieties grown in two locations (highland and lowland) in two years in Indonesia. Variation in nutritive quality was observed between varieties. Variation in DOMI was higher than in vivo OMD. In sacco degradation parameters were poor predictors of in vivo OMD and DOMI. Grain yield of the rice varieties studied was positively correlated with DOMI

Efeito da adição de soro de leite sobre a digestibilidade aparente e os parâmetros sanguíneos de vacas secas

Avaliou-se o efeito da adição de soro de leite líquido à dieta sobre os parâmetros sanguíneos e sobre a digestibilidade aparente da matéria seca (DAMS), da proteína bruta (DAPB), da fibra em detergente neutro (DAFDN) e da fibra em detergente ácido (DAFDA) em 12 vacas Girolando, secas, que receberam feno de coastcross (Cynodon dactylon), suplementado com sal proteinado, e zero (controle), 15, 30 ou 45 litros de soro de leite/dia. A adição de soro na dieta afetou a DAMS e a DAPB (PThe effect of liquid whey addition in the diet on blood parameters and on the apparent digestibility of dry matter (ADDM), crude protein (ADCP), neutral detergent fiber (ADNDF), and acid detergent fiber (ADADF) was evaluated in 12 dry Gir cows, receiving coastcross (Cynodon dactylon) hay supplemented with protein salt and zero (control), 15, 30, or 45 liters of whey per day. The inclusion of the whey in the diet affected the ADDM and ADCP (P<0.01) and had no effect on ADNDF and ADADF. As high the volume of whey inclusion, higher the ADDM and ADCP values. The average values of glucose in blood plasma - 59.3, 64.0, 66.6, and 69.2mg/dL - varied (P<0.01) among treatments, adjusting themselves to positive linear dL regressions. The whey inclusion diminished (P<0.01) blood urea values - 22.83, 20.17, 17.5, and 15.67. The whey improved the efficiency of utilization of nitrogen compounds in the rumen and can be used to complement protein supplements with high levels of urea