The Regulation Of Nutritional Value On Different Breeds Of Corn, Corn-stalk And Corn Silage

Nutritional evaluation and organic matter digestibility of 12 breeds of corn (corn stalk )harvested at different time was conducted through three part trials,the purpose is to investigate the output of corn and corn stalk , nutritional value of corn silage and the former corn.Even more probe into the relationship between time and nutritional value of corn. The results show that:The value of 12 kinds of corn declined with the maturity time including: CP, NDF, ADF, DM, EE, GE, WSC , OM , and FBC ascended in the different harvest time. As concerned as corn stalk, the content of CP,WSC, FBC of all kinds corn declined with the growing time. In opposition, the DM, OM, NDF, ADF, EE and GE rised. Moreover, the difference among different breeds was obvious. In generally ,the difference among Feeding-corn , Feeding and grain corn ,and common grain corn was obvious in Nutritional evaluation.The changing regularity of CP, EE, OM , GE, NDF and ADF of silage of 12 whole corns and corn stalks kept similar to the content before silage. From the ferment parameter of silage and the Nutritional evaluation data. the effects of whole corn silage was better than the silage of corn stalk. the growing time (harvest time) worked on the quality of silage, the quality of silage of last growing time corn was better than the earlier corn , but the quality of silage of earlier growing time corn stalks was better than the last corn. The silage quality of Green Feeding-corn excelled other breeds obviously, the silage quality of Feeding and grain corn excelled the grain corn, at the same time , the silage quality of grain corn had intimate relationship to the harvested time.