The Book of Eating , , [ digestibility and use of nutrients in the diets of black-and-pestle Holstein cows of different genotypes "by Nikolai Mikhailovich Igushkin is a unique study in the field of animal husbandry , which will be of interest to experts, CM and CM ....................................... who is just interested in modern agricultural sciences. In this work, the author immerses the reader in the world of dairy cattle breeding, revealing important aspects concerning the diets of black-and-peasant Holstein cows, which are among the most popular breeds in the dairy industry. The book begins with an in-depth analysis of feed consumption, which is a key aspect to achieving high animal productivity. Igushkin examines in detail how different genotypes of cows affect their ability to absorb nutrients, which in turn affects the quality of milk and the overall health of animals. This study is relevant for farmers, agronomists and veterinarians who seek to optimize their diets and improve the efficiency of dairy production. One of the main themes of the book is the influence of genetic factors on the digestibility of feed. Igushkin emphasizes that choosing the right food and its balance can significantly increase the productivity of cows, as well as improve the quality of milk. The reader will be able to learn about modern methods of assessing nutrients, as well as how different diets can be adapted depending on the genetic characteristics of animals. This makes the book a valuable resource for those involved in breeding and improving breeds. The book will be of particular interest to students of agronomic and veterinary faculties, as well as practitioners working in the field of animal husbandry. It will be an excellent addition to the teaching materials and will help to better understand how genetics and nutrition are interconnected and how this knowledge can be applied in practice. In addition, Igushkin’s research may attract the attention of the scientific community, as it contains relevant data and conclusions that may be useful for further research in this area. The style of the author is distinguished by scientific rigor and clarity of presentation, which makes it easy to perceive even complex topics. Nikolai Mikhailovich Igushkin is a well-known specialist in the field of animal husbandry, and his previous works were also devoted to the nutrition and productivity of farm animals. This book is a logical continuation of his research and a demonstration of a deep understanding of the subject. The topics raised in the book go beyond the mere description of cow feeding. Igushkin touches on environmental aspects, such as the impact of rations on the environment and sustainable livestock development. These issues are becoming increasingly relevant in light of global climate change and the need to optimize resources. Readers interested in sustainable development will be able to find a lot of useful information in the book that will help them better understand how animal husbandry can adapt to modern challenges. In conclusion, “Eating, digestibility and nutrient use of black-and-peasant Holstein cows of different genotypes” is not just a scientific publication, but a real find for anyone who wants to deepen their knowledge in the field of dairy cattle breeding. The book will be a useful tool for improving milk productivity and quality, as well as for understanding the complex relationships between genetics, nutrition, and animal health. If you are looking for information on modern approaches to cow feeding or want to learn more about genetics in animal husbandry, this publication should definitely take a place on your shelf.