Design and dynamics calculations of shallot seed feeding mechanism

Research on shallot planting feeding technology is an integral part of the shallot planter associations in which determines the suitable drop of shallot seeds to the planting mechanism. The shape of shallot seed will affect the process of selecting the feeding mechanism and feeding funnel shape. The dynamics study of shallot seeds in the feeding funnel and their movement (that is dependent on the profile and mass property of seeds) is important for manufacturing and running a good mechanism. The shallots will then be transferred by the feeding mechanism to the planting mechanism with a suitable falling trajectory. In this research, design and calculation of dynamics of the feeding mechanism of the shallot seeds is investigated using dynamics equations and also Autodesk Inventor Professional and Matlab Simulink codes. The suitable ranges of feeding mechanism parameters are obtained for the analyzed shallot seeds in terms of the specific shape, weight and mass center coordinates of the seeds.

Influence of new feeding technology of milk dromedary camels on their dairy productivity

The research aims to determine the influence of the new technology of feeding dromedary female camels on their dairy productivity. Milk camels of the I control group were kept in conditions of pasture with supplementary feeding of 3 kg of wheat bran, milk camels of the II experimental group, in addition to the main diet - pasture forage, received additional feeding with 3 kg of concentrated feed, consisting (wt.%): a mixture of grain waste - 50, cotton husk - 10, wheat - 25 and barley - 15 with a total nutritional value of 1.0 feed units, 9.46 megajoule of metabolizable energy and 90.5 g of digestible protein. Studies have shown that the dairy productivity of experimental groups of milk female camels gradually increases from the beginning of the lactation period. For 12 months of the lactation period, the dairy productivity of dairy camels in the control group was 2995.3 liters, in the II experimental group - 3236.2 liters in the III experimental group - 3467.9 liters. The average fat content of camel milk from sucking dromedary female camels, depending on the level of feeding, averages 4.22-4.39%.

Vibratory Powder Feeding for Powder Bed Additive Manufacturing Using Water and Gas Atomized Metal Powders

Commercial powder bed fusion additive manufacturing systems use re-coaters for the layer-by-layer distribution of powder. Despite the known limitations of re-coaters, there has been relatively little work presented on the possible benefits of alternative powder delivery systems. Here, we reveal a feeding technology that uses vibration to control flow for powder bed additive manufacturing. The capabilities of this approach are illustrated experimentally using two very different powders; a ‘conventional’ gas atomized Ti-6Al-4V powder designed for electron beam additive manufacturing and a water atomized Fe-4 wt.% Ni alloy used in powder metallurgy. Single layer melt trials are shown for the water atomized powder to illustrate the fidelity of the melt tracks in this material. Discrete element modelling is next used to reveal the mechanisms that underpin the observed dependence of feed rate on feeder process parameters and to investigate the potential strengths and limitations of this feeding methodology.

IMPLEMENTATION AND EFFICIENCY OF DIFFERENT APPROACHES TO THE ORGANIZATION OF MILKING COW TECHNOLOGY

One of the important parts of the technology of industrial milk production is the organization of the technology of feeding dairy cows, as in the cost of milk feeding costs reach 70%. To determine the effectiveness of the introduction of new approaches to the organization of feeding dairy cows, it is necessary to conduct a more detailed analysis – not only to determine the impact on dairy productivity, but also to take into account the economic component. Obtaining high milk yields is impossible due to unbalanced rations, poor quality feed and imperfect feed preparation technology. The use in practice of new approaches in balancing feeding rations allows to achieve the tasks at lower cost. The elements of feeding technology of dairy cows were introduced and the efficiency of using high-energy protein supplement with protected protein TEP-mix on two groups of dairy cows with a productivity of 15–20 kg per day was determined. The introduction of the proposed supplement to the diet provided an increase in the content of undigested protein in the rumen from 24.0 % to 34.0 % in the diet. This allowed not only to increase the milk productivity of cows, but also to improve the quality of milk. It was found that with the introduction of supplements in cows of the experimental group, in the rations of which used TEP-mix, the daily milk yield of cows increased by an average of 3.68 kg (from 12.0 to 15.68 kg), and in terms on the basic fat content – by 5.45 kg (from 13.24 to 18.68 kg), the fat content – by 0.30 abs. % (from 3.75 to 4.05 %), protein – by 0, 27 abs. % (from 2.95 to 3.22). At the same time, the average daily income per 1 cow in the sale of basic fat milk increased by UAH 41.65. (from UAH 26.46 to UAH 68.11), and the profit per 1 kg of milk of basic fat content – by UAH 1.65. (from UAH 2.00 to UAH 3.65). Based on multicriteria analysis, it was found that when using different approaches to the organization of feeding technology for dairy cows, the one that uses the additive TEP-mix with protected protein is more profitable.

Occurence of tail and ear bite injuries in a Hungarian complex pig farm

Abnormal oral manipulation, such as tail-, ear-, and flank-biting are among the most serious behaviour problems in modern pig husbandry. They not only affect the welfare of animals, but also have economic consequences. The prevalence of tail-, ear-, and flank-bite damage was estimated in a 1200 sow farrow-to-finish commercial farm in Hungary were pigs grouped by age. A total of 16,023 individuals were observed, of which 4,679 were housed in the batteries and 11,344 were housed in the fattening barns. In the batteries, the prevalence of tail-bitten and ear-bitten piglets in the different age groups ranged from 2.6 to 15.18%, 10.77 to 56.87%, respectively. The likelihood of tail injuries increased with the age of the animals, while the likelihood of ear injuries gradually decreased with piglet?s age. No flank injuries were observed in piglets from the batteries. In the fattening barns, the prevalence of tail and ear injuries in the different age groups was between 2.73 and 6.1%, and between 3.38 and 58.16%, respectively. Flank biting appeared only in older animals, from 156 days of age, at a much lower frequency (1.96 to 3.26%) than the other injuries studied. Some elements of the housing and feeding technology applied in this farm could enhance the occurrence of abnormal oral bite behaviour in pigs. Changing from wet to granulate feed and replacing the grid flooring with solid flooring covered with straw litter could lead to a decline in the incidence of biting.

Breeding beef calves using different feeding technologies

The article presents the findings on the dynamics of the live weight of calves of various breeds in similar climatic conditions in arid regions of the Stavropol Krai of Russia and the steppe zone of Ukraine. It has been established that the live weight of calves of the Hereford, Kazakh white-headed and Kalmyk breeds when raised according to the traditional technology of beef cattle breeding when calves are sucked under cows up to 6-7 months of age, is in relationship with the milk qualities of mothers. At the same time, the live weight of the gray Ukrainian calves was interrelated regarding the live weight at birth and the feeding technology. A positive relationship was shown in the live weight of calves at birth and during their implementation at 15 and 18 months of age. Most effectively animals used pasture fodder in spring and summer. In an arid climate, it is more appropriate to breed specialized cattle belonging to the Hereford breed and then sell them for breeding in other farms in the region.