Influence of antioxidant and chelate compound on milk productivity and milk quality of lactating cows during denitrification
Authors:   Federal State Budgetary Educational Institution of Higher Education “North Caucasus Mining and Metallurgical Institute (State Technological University), Russia, Republic of North Ossetia – Alania, Vladikavkaz, Baeva Z. T. , Baeva A. A. ,   Federal State Budgetary Educational Institution of Higher Education “North Caucasus Mining and Metallurgical Institute (State Technological University), Russia, Republic of North Ossetia – Alania, Vladikavkaz, Temiraev V. Kh. ,   Federal State Budgetary Educational Institution of Higher Education “Gorsky State Agrarian University”, Russian Federation, Vladikavkaz, Gogaev O. K. ,   Federal State Budgetary Educational Institution of Higher Education “Gorsky State Agrarian University”, Russian Federation, Vladikavkaz, Gazzaeva M. S. ,   Federal State Budgetary Educational Institution of Higher Education “Gorsky State Agrarian University”, Russian Federation, Vladikavkaz, Kubatieva Z. A. ,   Federal State Budgetary Educational Institution of Higher Education “Gorsky State Agrarian University”, Russian Federation, Vladikavkaz, Rozovenko M. V. ,   Federal State Budgetary Institution “Russian Academy of Sciences”, Russia, Moscow, Kozhokov M. K. ,   Federal State Budgetary Educational Institution of Higher Education “Kabardino-Balkarian State Agrarian University named after V. M. Kokov”, Russia, Kabardino-Balkarian Republic, Nalchik
Published: November 2024

The purpose of the research was to study the eff ect of the antioxidant Epofen and chelate calcium citrate feed additives on milk productivity, physicochemical and technological properties of milk from lactating cows fed by rations with subtoxic nitrate content. It was found that the highest degree of denitrifi cation with a simultaneous increase in the technological qualities of milk was facilitated by joint feeding of Epofen at a dose of 3 g/head and chelate calcium citrate at a dose of 1.0 g/100 kg of live weight. Due to this, the fat and protein content in the milk of cows in the 3rd experimental group was significantly higher by 0.23 and 0.26 abs.% compared to the control group (P > 0.95). The highest ammonia content was in the milk of cows in the 3rd experimental group 3.552 mg/l, which was 62.1 % more than in the control group (P > 0.95), with a simultaneous reliable (P > 0.95) decrease in nitrates by 52.9 % and nitrites by 60.0 %. At the same time, joint feeding of Epofen and calcium citrate allowed to ensure the highest yield of cheese mass from the milk raw materials of cows in the 3rd experimental group 10.84 kg, which was 13.3 % more than in the control group (P > 0.95). With joint additions of the tested drugs, cheese samples from the milk of cows in the 3rd experimental group compared to the control samples contained more protein soluble nitrogen by 6.87 abs.% (P > 0.95), and non-protein soluble nitrogen by 2.63 % (P > 0.95) less. Compared to the control samples, in the samples of cheese mass from the milk of cows of the 3rd experimental group, there was a signifi cant (P > 0.95) decrease in the content of nitrates by 72.3 % and nitrites by 74.3 %.