Influence of the preparation «Polysalts of microelements» on the metabolism of mineral substances in lactating cows under conditions of intensification of production

Abstract

Soils in the Vladimir region are poorly represented by mobile forms of cobalt and zinc, below average they are provided with boron and manganese. Accordingly, there is a need for the administration of preparations containing trace elements to replenish deficient feed rations. The use of the preparation «Polysalts of microelements» leads to an increase in the level of copper, zinc, cobalt and manganese in the blood serum of cattle, restoring the physiological norm. The optimal dose of the preparation «Polysalts of microelements» has been selected. It is 300 mg daily for 20–30 days in infertile animals, or daily at a dose of 270–300 mg in the last third of pregnancy before the expected calving When using «Polysalt of microelements» for 30 days at a dose of 300 mg, 100% of the cows came to hunt. The period from calving to full libido averaged 30,9±2,39 days; the service period was 79,5±2,47 days, and the insemination index was 1,6±0,14.

Effect of Mycotoxins on Reproduction and Milk Quality of Dairy Cattle and its Amelioration by Natural Adaptogen “Betulin”

“…In concurrence with the current trend of intensifying dairy cattle rearing systems aimed at maximizing production and profits, new standards for feeding highly productive animals are being developed using various feed additives and supplements (Korotkiy et al 2023;Avdeenko et al 2021;Sherimova et al 2022;Fedotov et al 2020). However, in large livestock enterprises, nutritional infertility is diagnosed annually in 25-30% of infertile cows, indicating that this problem is quite widespread in dairy cattle breeding (Gnezdilova et al 2021;Yakhaev et al 2020). The most prevalent type of impeded fertility in dairy cows is nutritional infertility, which is brought on by changes in the energy content of diets, including changes in the amounts of proteins, carbohydrates, fats, macro and microelements, improper diet formulation and also the use of poor-quality feeds (Simonov et al 2011).…”