Автоматизированные Системы Управления Здоровьем Животных Как Стратегическая Основа Оптимизации Воспроизводства В Молочном Скотоводстве

Михайленко, И. М.

doi:10.15389/agrobiology.2014.2.50rus

Cited by 2 publications

(3 citation statements)

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“…По разным данным, в стадах количество «проблемных коров» может варьировать от 20 до 80%. С целью достижения регламентируемых нормами показателей плодовитости рекомендуют специальные вмешательства, включающие введение современных биорегуляторов [1,2].…”

Section: ветеринарная фармакологияunclassified

Efficiency of using bioregulators depending on the system and method of keeping of cows

Aminova

Yumaguzin

2022

Agrarnaâ nauka

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Relevance. For the reproduction of the breeding stock of cattle, the conditions of detention should maximally meet the optimal conditions for the life of animals. In this regard, the study of the characteristics of physiological changes after injections of bioregulators to induce estrus in cows under various systems and methods of keeping is of great importance and is an important area of research. The purpose of the work is to study the reproductive function of cows depending on age and various conditions of keeping.Methods. The results of the work are based on analytical, biometric, statistical methods and the authors’ own research.Results. In studies was found that a general decrease in the effectiveness of the use of GnRH analogs and hCG to increase fertility can occur due to treatments carried out in the summer months. The greatest effect of the use of GnRH and hCG preparations should be expected when they are introduced in parallel with insemination in induced estrus in the winter-spring and autumn-winter months. At the same time, the fertility rates in cows tethered were slightly higher in the stall-pasture system of keeping, and slightly lower in the camp-pasture system than in loose ones. When studying the reproductive function, depending on the number of lactations, as a result of the use of a complex of bioregulators, high indicators of cows that came into the hunt were obtained, from 74 to 91% of the total number of animals showed signs of estrus according to the different number of lactations. Cows with 1st and 2nd lactation have the highest rate for those who came into heat (91% and 87%) with the lowest insemination efficiency (47% and 49%, respectively). In cows of the 3rd and 4th lactations, the highest adjustment to the restoration of the ovarian cycle is observed, with the average indicators of those who came to the hunt, the highest insemination efficiency was subsequently obtained (70 and 75%, respectively). For three or more months after calving, more than half of the herd of calving cows (71.6%) were fruitfully inseminated.

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Section: ветеринарная фармакологияunclassified

Efficiency of using bioregulators depending on the system and method of keeping of cows

Aminova

Yumaguzin

2022

Agrarnaâ nauka

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“…In our previous study [11], a general description of the problem of reproduction in dairy husbandry was given which is the central problem in this important sector for all countries with developed agriculture. In this regard, the general concept of animal health control was proposed [8].…”

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“…The Hamiltonian of the system (8), (9) is: (10) with the corresponding conjugate variable model: (11) and the optimization problem is to minimize the criterion (8) by using the Hamiltonian (10) and the conjugate variable (11). A detailed algorithm of this solution is shown below.…”

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New Probabilistic Statistical and Dynamic Models to Control Life Cycle in Lacting Cows

Mikhailenko¹

2015

S-h. biol.

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A b s t r a c tReproduction in dairy herds recently has become increasingly important. The tendency to its reduction occurs everywhere in all countries with a developed dairy husbandry. On average, the number of lactations per cow is diminishing and now close to 3 while a genetic potential of many cattle breeds is over 10 lactations. To resolve this issue, a theoretical base should be developed using latest progress in various related sciences. The aim of the present study is the first theoretical justification for a key stage of the general concept of lactating cows' health management, proposed in our previous paper (I.M. Mikhailenko, 2014). Herein we suggest an approach to programming cow's life cycle from the first to the last economically reasonable lactation. As a result, the risk of animal culling and unnecessary costs are minimized. The problem is solved for the first time in biological science. Our theory is based on developed dynamic and probabilistic statistical models. At its core, this approach provides a science-based standard of animal feeding for optimized lactation during life cycle. The dynamic models for lifetime annual yields reflect animal age and nutrient intake with diet, and the probabilistic statistical modeling, used to control cows' culling due to ill health and diseases, is the most important feature of the developed approach to life-cycle control. All physiological states, from a heifer to the last lactation, are considered, and all the flows within the dairy herd and possible causes for culling are identified. These mathematical models allow assessing the risk of possible livestock losses, which are minimized due to optimized annual diet. The developed algorithm allows to specify adjustments in annual feeding rations during the cow's life cycle (the feeding strategies for dairy cattle), which ensure optimal reproduction rate, optimal number of possible lactation per cow and optimal annual yields. Thus, the use of a lactating cow is normalized resulting in healthy livestock and maximized profitability of milk production. Since the individual approach to cows' feeding is a substantial reserve for increasing profitability of a dairy herd as a whole, the task of life cycle control is regarded at two levels, for an individual and for the herd on average. For a particular herd, the choice to one of the levels depends on whether there are the means to provide individual health control and dosing concentrated feed and food additives. Practically, the use of proposed mathematical models is mainly limited by lack of long-term (10-12 years) surveys of animal health as depended on the actual diet, since these data are necessary for identification and validation of the algorithms, but an experimental model such as 100-150 cows' dairy farm, equipped with systems for health monitoring and feed composition control, could improve the situation.

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Автоматизированные Системы Управления Здоровьем Животных Как Стратегическая Основа Оптимизации Воспроизводства В Молочном Скотоводстве

Cited by 2 publications

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Efficiency of using bioregulators depending on the system and method of keeping of cows

Efficiency of using bioregulators depending on the system and method of keeping of cows

New Probabilistic Statistical and Dynamic Models to Control Life Cycle in Lacting Cows

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