With advances in animal nutrition, there is more concern towards fulfillment of nutrient requirements for maintenance and production level of ruminants. Among nutrients, energy and protein are the most important nutrients in the ration as both energy and proteins have a direct role in the functioning of all other physiological, biochemical, and other nutrients metabolism. To evaluate the role of various concentrations of energy and protein parameters like dry matter intake (DMI), digestibility, Nitrogen dynamics, and body weight changes must be studied thoroughly. Therefore, this review sums up the impact of different levels of energy and protein on nutrient digestibility, nutrient balance, DMI and on growth rates.
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Chauhan et al. (2021) studied this question.
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