The use of hydroponic green forages in increasing milk productivity and improving reproductive ability of Holstein cows

¹ Samarkand State Veterinary Medicine, Animal Husbandry and Biotechnology University, M. Ulugbek 77, Mirzo Ulugbek St. 94, Samarkand, Uzbekistan
² Samarkand Agroinnovations and Research University, 7, A. Temur st., Dakhbed town, Uzbekistan

^* Corresponding author: egamberdiyeva.zebo@bk.ru

Abstract

The article analyzes the effect of including hydroponic green fodder (HGF) in the diet of dairy cows on milk productivity and reproductive ability in cows under farm conditions. For dairy cows in the control group, a balanced feeding ration was prepared, taking into account live weight and milk productivity. Three experimental groups were formed, in the diet of which concentrated forages were replaced by HGF 25, 35, and 45% by nutrient content, respectively. The positive influence of GZK on milk productivity was revealed: milk yield of cows increased by 5.6–13.2 percent, and milk fat yield increased by 5.9–12.9% in comparison with the control group. It has been established that the introduction of HGF into the diet of cows improves the qualitative composition of milk and contributes to the increase of milk solids without reducing their physical properties. The reproductive ability of cows was studied when using HGF, and a positive effect was established. It is revealed that the experimental cows had optimal terms for service period and intercalf period, which contributed to obtaining one calf per year. The best indicators of milk productivity and reproductive ability were observed in cows of the II experimental group, which allows recommending the replacement of concentrated fodder in the amount of 35% in nutritional value for HGF in the diet of dairy cows.