If dairy feeds provided to animals are not balanced to meet their daily requirements, milk yield losses and fertility problems may occur. When the energy requirements of dairy cows are not met, it can lead to reduced milk yield, body weight loss, decreased disease resistance, silent estrus, and conception problems. Ensuring the proper balance of energy and protein in rations is therefore highly important. Barns for dairy cows should be kept clean and well-ventilated. Cows should always have access to high-quality, clean, and fresh water whenever they want. Providing water only at specific times reduces feed intake and causes rumen acidification. In dairy cow nutrition, concentrate and roughage should be fed as a mixed ration.