Productivity, chemical composition and agronomic characteristics of different forages

[摘要] The objective of this work was to evaluate nutrient production and extraction of different forages. Four crops were implanted: corn, Sudan sorghum, forage sorghum and sunflower in an experimental design in randomized blocks, with four treatments and five repetitions. Sunflower and Sudan sorghum had the highest green matter production, while corn and sorghum forages excelled over the other crops for dry matter production. The highest values of fibrous fraction were observed for Sudam sorghum. Sunflower crop extracted the highest amount of calcium, potassium and magnesium, while Sudan sorghum showed the highest phosphorus extraction. Extraction of nitrogen and sodium was not different among crops. Corn is the best forage for silage because it has the highest ear proportion in relation to the rest of the plant.

[学科分类] 兽医学

[关键词] corn;nutritional value;sorghum;sunflower    IntroduçãoAs regiões tropicais caracterizam-se pelo elevado número de espécies forrageiras com grande potencial para utilização na alimentação de ruminantes