The in vitro/gas dry matter (DM) digestibility of four roughages, mixed or not, in proportion of 50% in the DM were evaluated. Samples of 100 mg by treatment, in triplicate, in 48 h of digestion were incubated. The DM digestibilities and gas production were: sugar cane = 60.6%, 17.3 mL; sugar cane + corn silage = 63.9%, 19.6 mL; sugar cane + elephantgrass of 60 days = 60.5%, 16.9 mL; sugar cane + elephantgrass of 180 days = 48.6%, 14.1 […]

The objective of the present study was to use the observed data on the changes of the neutral detergent fiber (NDF), lignin and carbohydrate fractions and of the related degradation rates of 15 sugar cane varieties, to evaluate this nutrient availability in promoting the milk production of the crossbred Holstein cows using the CNCPS system. A concentrate supplement compose by corn silage, whole cottonseed and soybean meal and urea was used to attend the nutritional requirement of this animals to […]

Three rumen cannulated buffaloes (Bubalus bubalis) and three zebu cattle (Bos indicus) were fed chopped sugar cane ad libitum and 3 kg of concentrate/animal/day during 13 weeks. After two weeks of adaptation, samples of rumen contents were weekly collected at two times: just before feeding and 40 minutes after feeding to measure the concentration and composition of ruminal fauna. Ruminal contents were mixed and re inoculated among animals from the same species after five weeks of trial starting. During the […]

Eight rumen fistulated rams were delineated in two Latin Squares in four periods of 35 days each and four treatments consisted of increasing levels of sugar cane (SC) in substitution to the corn silage (CS): A) 100% CS, B) 67% CS and 33% SC, C) 33% CS and 67% SC and D) 100% SC, to evaluate the population of ciliate protozoa in the rumen. The total concentrations of rumen ciliate protozoa and of Entodinium decreased and the values of pH […]

The objective of this work was to evaluate the effect of the administration of 20 mg of slow liberation bovine somatotropin (rBST) on the dry matter intake and on the digestibility coefficient of dry matter (MS), acid detergent fiber, crude protein, crude energy, nitrogen balance and the daily weight gain in lambs fed diets based on corn silage, sugar cane or hydrolyzed bagasse and concentrate. Twenty-four crossbred lambs, averaging 4-5 months of age and 22 + 2 kg LW, were […]

The objective of this work was to evaluate the performance, ponderal development of heifers fed sugar cane based diets, supplemented with non protein nitrogen (NPN) sources (urea or broiler litter, in replacement of urea) and, or, probiotics addition (without probiotic, with yeast or with ruminal microbiota). Cost and gross margin of the use of these diets were also evaluated. Twenty-four heifers, with age and average initial weight of 14 months and 247 kg LW, respectively, were maintained in individual stalls […]

The objective of this work was to evaluate the ingestive behavior of crossbred dairy heifers fed sugar-cane based diets, supplemented with non protein nitrogen [NPN] sources (urea or broiler litter, in replacement of urea) and, or, probiotics addition (without probiotic, with yeast or with ruminal microbiota). Twenty-four heifers, with age and average initial weight of 15 months and 247 kg, respectively, were maintained in individual stalls and ad libitum fed during the experimental period of 84 days. The animals were […]