Effects of total replacement of corn silage with sorghum silage on milk yield, composition, and quality
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- 作者：M. Cattani ; N. Guzzo ; R. Mantovani…
- 关键词：Dairy cows ; Forage sorghum silage ; Mean particle size ; Milk coagulation properties ; Milk fatty acid profile
- 刊名：Journal of Animal Science and Biotechnology
- 出版年：2017
- 出版时间：December 2017
- 年：2017
- 卷：8
- 期：1
- 全文大小：343KB
- 刊物主题：Agriculture; Biotechnology; Food Science; Animal Genetics and Genomics; Animal Physiology;
- 出版者：BioMed Central
- ISSN：2049-1891
- 卷排序：8
文摘
BackgroundIn the last years, difficulties occurring in corn cultivation (i.e., groundwater shortages, mycotoxin contamination) have been forcing dairy farmers to consider alternative silages. Some experiments conducted on lactating cows have proven that the total replacement of corn silage with sorghum silage did not reduce milk yield. However, this kind of substitution involves supplementing sorghum-based diets with grains, to compensate for the lower starch content of sorghum silage compared to corn silage. Change of silage type and inclusion of starch sources in the diet would influence rumen fermentations, with possible effects on milk composition (i.e., fatty acid profile) and coagulation properties. A worsening of milk coagulation properties would have a negative economic impact in Italy, where most of the milk produced is processed into cheese.