The nutrient requirements of breeding bulls depend on their age, level of fatness, and the level of their use during insemination or insemination. The degree of their use during fertilization is divided into three cases: not used, medium and high. If a couple of times a week, the level of use is considered medium, if it is 23 times, it is considered high.
Decree of the President of the Republic of Uzbekistan dated February 7, 2017 No. PF-4947 "On the strategy of actions for the further development of the Republic of Uzbekistan". Collection of legal documents of the Republic of Uzbekistan, 2017, No. 6, Article 70.
No. 280 of May 12, 2020 of the Cabinet of Ministers on control of breeding work in animal husbandry.
Durst L., Vittman M. Qishloq xo‘jaligi hayvonlarni oziqlantirish. Darslik Urganch 2010.
Hayvonlarni oziqlantirish B.S.Yaxyayev.K.X.Xaydarov. Toshkent Fan va texnologiya-2019.
Nosirov U.N. Chorvachilikda klassik va zamonaviy usulllari. O‘quv qo‘llanma. Toshkent, ToshDAU tahririyat-nashriyoti - 2008 yil.