Suchergebnisse

This study aimed to evaluate the best level of inclusion of crude glycerin in elephant grass (Pennisetum purpureum Schum.) silage on fermentative profile, chemical composition and ruminal degradation of dry matter and fiber fraction in elephant grass silages. The experiment was conducted in a completely randomized design being used elephant grass cv. Napier with four levels of inclusion of glycerin (1, 5, 10, 15% in natural matter) with six repetitions and the control treatment (exclusive silage elephant grass). Increasing linear effect was observed for each unit added glycerin percentage in natural matter (MN) an increase of 0.36% in the DM content of silages and increase of 0.32% in the ether extract. The fermentative quality of silage there was no difference in pH between the control silage and added with glycerine, with an average of 3.91. The degradability of the fiber, the addition of crude glycerin up to 15% increased by 7.2%; 53.8% and 36.5%, respectively, the insoluble fraction, but potentially degradable standardized "bp", degradation rate of the fraction "bp", "c" and effective degradability, respectively. Inclusion of 15% glycerin in natural matter improves the composition bromatological fermentative profile and ruminal degradation of dry matter and fiber fraction.

This study aimed to evaluate the effects of includingsun-dried banana peel in diets for F1 Holstein x Zebu cows on intake, digestibility and milk production. Diets were composed of 0, 15, 30, 45 and 60% replacement of sorghum silage with banana peel provided to 10 cows in two simultaneous 5 x 5 Latin squares, with the experiment divided into five periods of 16 days. The dry matter intake showed a quadratic effect with maximum level at 38.30% substitution as well as intake of crude protein expressed in kg-1 day and percentage of body weight, with maximum at the levels of 50.09 and 45.69% inclusion of the peel, respectively. The intake of neutral detergent fiber and the digestibility of neutral detergent fiber and crude protein showed a decreasing linear effect. Variation in weight and body condition score, milk production and feed conversion were not affected. The replacement of 60% sorghum silage with banana peel represents a viable alternative as it causes no change in cows with average production of 16.49 kg milk with 3.5% fat day-1, reducing feeding costs.