In a number of experiments, adding of Elevit feed additive in the amount of 100, 150, 200, or 250 grams per day to the basic ration of breeding boars helps to increase sperm production by 5.0, 8.6, 11.9, and 11.1% in comparison with the control group of boars. In the boars of experimental groups, qualitative parameters of sperm increased as following: sperm resistance by 6.6, 8.1, 12.3, and 11.9%; the ability of sperm cell to live outside the body by 6.0, 6.7, 7.4, and 8.1% in comparison with the control group.Adding this drug at the dose of 50, 100, 150, and 200 g to the basic diet of sows during the period of their preparation to insemination has a favorable effect on increasing the following parameters: sexual heat by 5.0, 10.0, 10.0, and 10.0%; productive insemination by 1.0, 7.1, 1.9, and 7.1%; number of piglets in a litter by 2.8, 6.6, 7.6, and 5.7% in comparison with the control group.
The automatic adaptive feeder for fish feeding in recirculation plants has been developed and tested. It was found that the use of this feeder allowed to increase the yield of fry per 1 m³ by 35% and 13.6%; the yield of fingerlingby 45.9% and 18.5%; in the final period of cultivationby 52.3% and 21.9% in comparison with hand-feeding and traditional auto-feeding without the adaptation function of the autofeeder. Accordingly, using an automatic adaptive feeder, it was possible to obtain by 71.7 kg and 37.6 kg more fish per 1 m³ of recirculating aquaculture system (RAS) during one production cycle than using the existing technology. It helps to make an additional clear profit from the sale of products for 6,702 rubles 88 kopecks from 1 m³ of RAS in comparison with handfeeding and 3,503 rubles 09 kopecks in comparison with automatic feeding without the adaptation system. Keywords-recycling plants for fish farming, RAS, fish automatic feeding, automatic feeder for fish, feeding behavior of fish, sharp-tooth catfish A computer program for the analysis and inspection of chemical composition (ammonium nitrogen, nitrite ions, nitrate ions, oxygen), water temperature and atmospheric
Studies have shown that feeding the feed additive “Elevit” during the preparation of sows for insemination in a dosage of 1.0; 2.0; 3.0; 4.0% over the basic daily diet can increase estrum in replacement sows by 6.6; 20.0; 26.6; 26.6%, respectively, fertilization and prolificacy by 2.1; 5.3; 6.6; 6.6% and 1.0; 4.3; 7.6; 6.5%, respectively. Such a significant increase in the previously mentioned indicators also led to an increase in the total number of piglets by 13.5; 43.2; 60.8; 59.4%, respectively, while their cost at birth decreased by 11.5; 29.7; 37.4; 36.7% compared to the control group. Similar results were obtained from adult sows – estrum increased by 3.4; 10.0; 10.0; 10.0%, fertilization and prolificacy by 0.5; 5.0; 5.0; 5.0% by 0.9; 8.2; 8.2; 9.1%, respectively. At the same time, the total number of piglets at birth increased by 5.8; 28.7; 28.3; 29.1%. Their cost at birth decreased in comparison with the first control group by 5.2; 21.9; 21.5; 21.8%. From the data obtained by us, the best option for feed additive “Elevit” feeding both in terms of zootechnical and economic efficiency is – for replacement gilts in the amount of 3.0%; for adult sows – 2.0% over the basic daily diet for the period of preparation for insemination.
In these studies, it was found that seasons have a significant impact on the reproductive function of Large White boars. It was found that these indicators were the highest in winter, and the lowest in summer. Studies have also shown that the inclusion in the diet of Large White boars of the feed additive “HydroLaktiV” in a dosage of 1.0, 1.5, 2.0% over the main diet allowed to increase both quantitative and qualitative indicators of sperm. An increase in the quantitative and qualitative sperm indicators of the studied boars in turn led to an increase in the number of piglets in these groups by 7.4, 11.6, 11.4%, respectively; a decrease in their cost at birth by 7.0, 10.4, and 10.3% compared to the control group.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.