Losses through gases and effluent and nutritional value of Brachiaria decumbens with addition of soybean hulls

Revista Brasileira de Zootecnia

Carlos Clayton Oliveira Dantas¹  Anderson De Moura Zanine¹  Alexandre Lima De Souza¹  Luciano Da Silva Cabral¹  Fagton De Mattos Negrão¹  Edson Mauro Santos¹  Daniele De Jesus Ferreira¹ 

关键词: byproduct;    conservation;    ensilage;    tropical grass;   

DOI  :  10.1590/S1516-35982014000500001

来源: SciELO

【 摘 要 】

The objective of this experiment was to evaluate the losses of nutrient through gases and effluents, the nutrient recovery, fermentation parameters and the chemical parameters of silages of Brachiaria decumbens with the addition of soybean hulls, testing five levels of inclusion: 0, 10, 20, 30 and 40% (as is), with five replications per treatment. After the standardization cut of the forage, performed at 5 cm from the soil level, the soil was fertilized with nitrogen and potassium in the form of ammonium sulfate and potassium chloride, respectively, at 60 kg/ha. After 60 days, the grass was cut at 10 cm from the soil and ensiled. Experimental silos with capacity of 10 liters with Bunsen valve were used. Silos had 3 kg of sand conditioned at the bottom for retention of the effluents. The results show that the contents of dry matter, crude protein, acid detergent insoluble fiber and total digestible nutrients presented positive linear behavior with the inclusion of soybean hulls. In the grass silages with addition of soybean hulls, there was greater recovery of dry matter in relation to the control silage, which is a reflection of the negative linear behavior for the values of losses of gases and effluent. There was quadratic behavior in the pH values and negative linear behavior for the ammonia N values and buffering capacity with the inclusion of the additive in the grass silage. Inclusion of soybean hulls is sufficient to improve the fermentation pattern and minimize the losses through gases and effluents, contributing to the nutrient recovery, in addition to promoting overall improvement of the nutritional value of Brachiaria grass silages.

【 授权许可】

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