Prospects for the use of a <i>Bacillus subtilis</i> metabolites-based feed additive in dairy farming
Laboratory and field experiment on use of the feed additive based on Bacillus subtilis endo- and exometabolites for the cows in different physiological periods are described in the paper. The feed additive impact on main body systems of the tested cows (n = 30), milk production parameters, growth ra...
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Da Vinci Media
2021-11-01
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| Series: | Ветеринария сегодня |
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| Online Access: | https://veterinary.arriah.ru/jour/article/view/597 |
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| author | S. V. Malkov A. S. Krasnoperov A. P. Poryvaeva O. Yu. Oparina A. I. Belousov A. N. Brilliant |
| author_facet | S. V. Malkov A. S. Krasnoperov A. P. Poryvaeva O. Yu. Oparina A. I. Belousov A. N. Brilliant |
| author_sort | S. V. Malkov |
| collection | DOAJ |
| description | Laboratory and field experiment on use of the feed additive based on Bacillus subtilis endo- and exometabolites for the cows in different physiological periods are described in the paper. The feed additive impact on main body systems of the tested cows (n = 30), milk production parameters, growth rate of the calves (n = 18) born to the said cows were examined. The feed additive was added to the diets for the cows of test groups, 15 g per cow. The feed additive was found to have a positive effect on immunohematological and metabolic processes in postpartum cows. Neutrophils’ phagocytic activity increased by 12.5% and 14.6% in the animals of test group 1 and test group 2, respectively, as compared to that one in control animals (42.8 ± 1.9%). Neutrophil absorbency increased by 2.5 times, 3.2 times and 2.1 times in the animals of test group 1, test group 2 and control group, respectively. The proportion of T-lymphocytes in blood of animals in test group 1 and test group 2 was 44.5 and 48.9%, respectively, proportion of T-lymphocytes in blood of control animals equaled to 37.5%. Trend for increase in total protein concentration in cow sera owing to increase in albumin fraction was observed in postpartum period: it was 72.91 ± 3.45 g/l in test group 1; 75.54 ± 4.12 g/l in test group 2; 70.95 ± 4.25 g/l in control group. Average daily milk yield in cows of test group 1, test group 2 and control group for the 150 days of lactation was 24.50 ± 1.86 kg; 25.33 ± 1.45 kg and 22.75 ± 4.41 kg, respectively. Higher growth rate was reported for the calves born to the cows received the diet supplemented with the said feed additive. Heifers of test group 1 and test group 2 have reached body weight of 193.51 ± 5.76 and 195.33 ± 3.76 kg and in control group – of 187.33 ± 4.98 kg within 6 months. Feed additive based on endo- and exometabolites of Bacillus subtilis is recommended for cow diets for highly productive dairy herd creation and food-producing animal welfare maintenance. |
| format | Article |
| id | doaj-art-6b384276c077401d8f2fe008a8497001 |
| institution | Kabale University |
| issn | 2304-196X 2658-6959 |
| language | English |
| publishDate | 2021-11-01 |
| publisher | Da Vinci Media |
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| series | Ветеринария сегодня |
| spelling | doaj-art-6b384276c077401d8f2fe008a84970012025-02-06T09:52:09ZengDa Vinci MediaВетеринария сегодня2304-196X2658-69592021-11-0110434234810.29326/2304-196X-2021-10-4-342-348540Prospects for the use of a <i>Bacillus subtilis</i> metabolites-based feed additive in dairy farmingS. V. Malkov0A. S. Krasnoperov1A. P. Poryvaeva2O. Yu. Oparina3A. I. Belousov4A. N. Brilliant5Federal State Budgetary Scientific Institution “Ural Federal Agrarian Scientific Research Centre, Ural Branch of the Russian Academy of Sciences”Federal State Budgetary Scientific Institution “Ural Federal Agrarian Scientific Research Centre, Ural Branch of the Russian Academy of Sciences”Federal State Budgetary Scientific Institution “Ural Federal Agrarian Scientific Research Centre, Ural Branch of the Russian Academy of Sciences”Federal State Budgetary Scientific Institution “Ural Federal Agrarian Scientific Research Centre, Ural Branch of the Russian Academy of Sciences”Federal State Budgetary Scientific Institution “Ural Federal Agrarian Scientific Research Centre, Ural Branch of the Russian Academy of Sciences”Federal State Budgetary Scientific Institution “Ural Federal Agrarian Scientific Research Centre, Ural Branch of the Russian Academy of Sciences”Laboratory and field experiment on use of the feed additive based on Bacillus subtilis endo- and exometabolites for the cows in different physiological periods are described in the paper. The feed additive impact on main body systems of the tested cows (n = 30), milk production parameters, growth rate of the calves (n = 18) born to the said cows were examined. The feed additive was added to the diets for the cows of test groups, 15 g per cow. The feed additive was found to have a positive effect on immunohematological and metabolic processes in postpartum cows. Neutrophils’ phagocytic activity increased by 12.5% and 14.6% in the animals of test group 1 and test group 2, respectively, as compared to that one in control animals (42.8 ± 1.9%). Neutrophil absorbency increased by 2.5 times, 3.2 times and 2.1 times in the animals of test group 1, test group 2 and control group, respectively. The proportion of T-lymphocytes in blood of animals in test group 1 and test group 2 was 44.5 and 48.9%, respectively, proportion of T-lymphocytes in blood of control animals equaled to 37.5%. Trend for increase in total protein concentration in cow sera owing to increase in albumin fraction was observed in postpartum period: it was 72.91 ± 3.45 g/l in test group 1; 75.54 ± 4.12 g/l in test group 2; 70.95 ± 4.25 g/l in control group. Average daily milk yield in cows of test group 1, test group 2 and control group for the 150 days of lactation was 24.50 ± 1.86 kg; 25.33 ± 1.45 kg and 22.75 ± 4.41 kg, respectively. Higher growth rate was reported for the calves born to the cows received the diet supplemented with the said feed additive. Heifers of test group 1 and test group 2 have reached body weight of 193.51 ± 5.76 and 195.33 ± 3.76 kg and in control group – of 187.33 ± 4.98 kg within 6 months. Feed additive based on endo- and exometabolites of Bacillus subtilis is recommended for cow diets for highly productive dairy herd creation and food-producing animal welfare maintenance.https://veterinary.arriah.ru/jour/article/view/597dairy farmingfeed additive<i>bacillus subtilis</i>immunohematologybiochemistry daily body weight gain |
| spellingShingle | S. V. Malkov A. S. Krasnoperov A. P. Poryvaeva O. Yu. Oparina A. I. Belousov A. N. Brilliant Prospects for the use of a <i>Bacillus subtilis</i> metabolites-based feed additive in dairy farming Ветеринария сегодня dairy farming feed additive <i>bacillus subtilis</i> immunohematology biochemistry daily body weight gain |
| title | Prospects for the use of a <i>Bacillus subtilis</i> metabolites-based feed additive in dairy farming |
| title_full | Prospects for the use of a <i>Bacillus subtilis</i> metabolites-based feed additive in dairy farming |
| title_fullStr | Prospects for the use of a <i>Bacillus subtilis</i> metabolites-based feed additive in dairy farming |
| title_full_unstemmed | Prospects for the use of a <i>Bacillus subtilis</i> metabolites-based feed additive in dairy farming |
| title_short | Prospects for the use of a <i>Bacillus subtilis</i> metabolites-based feed additive in dairy farming |
| title_sort | prospects for the use of a i bacillus subtilis i metabolites based feed additive in dairy farming |
| topic | dairy farming feed additive <i>bacillus subtilis</i> immunohematology biochemistry daily body weight gain |
| url | https://veterinary.arriah.ru/jour/article/view/597 |
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