Abstract
This study aims to determine the levels of dry matter, crude protein, and starch widely used in ruminant feeding, in dairy and beef cattle mixed feeds based on the measurements taken from two different Near-Infrared Reflectance (NIR) devices. The chemical analyses of the mixed feed samples used in the study were performed and the reference values (REF) were determined. In the research, two different NIR devices, a Benchtop-NIR and a Portable-NIR, were used and the nutrient values of mixed feeds were analyzed with these devices. It was determined that there were statistically significant differences between the reference method and NIR results for protein and starch content. Although the differences between the mean values were significant, the reference analyses results and NIR measurements were similar in some ways. According to the correlation coefficients calculated between the reference analyses with Benchtop-NIR and Portable-NIR devices, there was a weak correlation in the dry matter content, while a strong positive correlation existed in the protein (r = 0.72 for Portable, r = 0.93 for Benchtop NIR) and starch content. In the study, 30 different mixed feed (dairy cattle feed, beef cattle feed) values that are commonly used in ruminant feeding were measured.
Highlights
Animal products are aimed to be obtained by using vegetables in ruminant feeding
This study aims to determine the levels of dry matter, crude protein, and starch widely used in ruminant feeding, in dairy and beef cattle mixed feeds based on the measurements taken from two different Near-Infrared Reflectance (NIR) devices
It was seen that dry matter measurements with NIR devices can substitute the results of reference analysis and both methods can be used in the determination of the dry matter in mixed feeds, which is important in terms of time, labor, and material
Summary
Animal products are aimed to be obtained by using vegetables in ruminant feeding. Consuming animal products is critically important for a healthy society. The nutritional content of mixed feeds varies according to the feed crude materials used. Minimizing the cost of feed, the most important cost of the livestock sector, is vital for livestock enterprises. The feed should be economical and have quality standards. Mixed feeds, prepared for livestock, are widely used in cattle and sheep feeding. As there is a deficit in roughage in our country, the nutritional needs of cattle and sheep are provided with mixed feeds. Factories produce concentrated feed and carry out quality analyses to supply the nutrients required for animals. The nutritional content of the mixed feeds changes according to the nutritional content of the crude material.
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