The use of infrared thermography and accelerometers for remote monitoring of dairy cow health and welfare

Abstract. Wind turbines are constantly exposed to wind gusts, dirt particles and precipitation. Depending on the site, surface defects on rotor blades emerge from the first day of operation on. While erosion increases quickly with time, even small surface defects can affect the performance of the wind turbine. Consequently, there is demand for an easily applicable remote monitoring method for rotor blades that is capable of detecting surface defects at an early stage. In this work it is investigated if infrared thermography (IRT) can meet these requirements by visualizing differences in the thermal transport and the corresponding surface temperature of the wall-bounded flow.Firstly, a validation of the IRT method compared to stereoscopic particle image velocimetry measurements is performed comparing both types of experimental results for the boundary layer of a flat plate. Then, the main characteristics of the flow in the wake of generic surface defects on different types of lifting surfaces are studied both experimentally and numerically: temperature gradients behind protruding surface defects on a flat plate and a DU 91-W2-250 profile are studied by means of IRT. The same is done with the wall shear stress from Reynolds-averaged Navier–Stokes simulations of a wind turbine blade. It is consistently observed, both in the experiments and the simulations, that turbulent wedges are formed on the flow downstream of generic surface defects. These wedges provide valuable information about the kind of defects that generate them. At last, experimental and numerical performance measures are taken into account for evaluating the aerodynamic impact of surface defects on rotor blades. We conclude that the IRT method is a suitable remote monitoring technique for detecting surface defects on wind turbines at an early stage.

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Evaluasi Aspek Teknis Pemeliharaan Sapi Perah Berdasarkan Good Dairy Farming Practices (GDFP) di Peternakan Rakyat Cibungbulang

Jurnal Ilmu dan Teknologi Peternakan Tropis ◽

10.33772/jitro.v5i3.4977 ◽

2018 ◽

Vol 5 (2) ◽

pp. 79

Author(s):

Asminaya Santy Nur ◽

B. P. Purwanto ◽

A. Atabany ◽

Nurlaha Nurlaha

Keyword(s):

Dairy Cow ◽

Trichoderma Viride ◽

Dairy Farm ◽

Dairy Farming ◽

Dry Season ◽

Farming Practices ◽

Technical Aspects ◽

Feed Management ◽

Smallholder Dairy ◽

Cow Health

ABSTRAKPeningkatan produktivitas ternak dapat dicapai melalui perbaikan aspek teknis pemeliharaan yang meliputi perbaikan genetik, pakan, pengelolaan, perkandangan dan kesehatan ternak. Penelitian ini bertujuan untuk mengevaluasi penerapan aspek teknis pemeliharaan sapi perah berdasarkan Good Dairy Farming Practices (GDFP) pada peternakan sapi perah rakyat di Cibungbulang. Metode penelitian yang digunakan adalah survei dan pembagian kuisioner, observasi serta pengukuran langsung. Data dianalisis secara deskriptif dan disajikan dalam bentuk frekuensi tabulasi untuk menggambarkan karakteristik penerapan setiap aspek pemeliharaan sapi perah. Hasil penelitian menunjukkan bahwa pelaksanaan aspek teknis pemeliharaan sapi perah berdasarkan Good Dairy Farming Practices (GDFP) di peternakan rakyat Cibungbulang sebesar 69,75% pada musim hujan dan 67,25% pada musim kemarau. Aspek kesehatan ternak memperlihatkan nilai yang sangat rendah baik pada musim hujan maupun musim kemarau sehingga perlu mendapatkan perhatian khusus agar produktivitas ternak dapat ditingkatkan secara optimal.Kata kunci: biji kecipir, Trichoderma viride, pH, suhu, protein, serat kasarABSTRACTIncreased dairy cow productivity can be achieved through improving the technical aspects of maintenance which include genetic improvement, feed, management, housing and dairy cow health. This study was done to evaluate the application of the technical aspects of dairy cow maintenance based on the Good Dairy Farming Practices (GDFP) on smallholder dairy farm in Cibungbulang. The research method used was a survey and distribution of questionnaires, observations and direct measurements. Data were analyzed descriptively and presented in frequency tabulations to describe the characteristics and application each aspect of dairy cow maintenance. The results showed that the implementation of technical aspects of dairy cow maintenance was based on the Good Dairy Farming Practices (GDFP) at smallholder dairy farm in Cibungbulang i.e 69.75% in rainy season and 67.25% in dry season. The health aspect of dairy cow shows a very low value both in rainy and dry season so need special attention to increased productivity optimally.Keywords: dairy cow, technical aspects of maintenance, GDFP

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A comparison of a novel time-based summary measure of dairy cow health against cumulative disease frequency

Irish Veterinary Journal ◽

10.1186/s13620-018-0119-z ◽

2018 ◽

Vol 71 (1) ◽

Cited By ~ 1

Author(s):

Craig S. McConnel ◽

Ashleigh A. McNeil ◽

Joleen C. Hadrich ◽

Jason E. Lombard ◽

Jane Heller ◽

...

Keyword(s):

Dairy Cow ◽

Summary Measure ◽

Cow Health

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The impact of mycotoxins on dairy cow health and milk production

Кормопроизводство ◽

10.25685/krm.2021.9.2021.004 ◽

2021 ◽

pp. 38-46

Author(s):

В.Г. Косолапова ◽

М.М. Халифа ◽

Х.Г. Ишмуратов

Keyword(s):

Dairy Cow ◽

Animal Health ◽

Main Task ◽

High Concentration ◽

Fusarium Spp ◽

Toxin Concentration ◽

Production Stages ◽

Cow Health ◽

The Impact ◽

Penicillium Spp

В статье представлены материалы о влиянии микотоксинов на здоровье и продуктивность молочного скота. В настоящее время наибольшую опасность для здоровья животных представляют яды микроскопических грибов — микотоксины, что требует разработки методов их устранения по всей цепочке — от поля до потребителя. Известно, что споры грибов, продуцирующих токсины, живут в почве и оттуда передаются растениям, а затем зёрнам. Микотоксины — это вторичные метаболиты грибов, такие как афлатоксины (AF), продуцируемые видами Aspergillus, фумонизины (FUM), зеараленон (ZEN), токсин T-2 (T-2) дезоксиниваленол (DON), продуцируемый видами Fusarium, охратоксин A (OTA), продуцируемый видами Penicillium, и многие другие. Потребление кормов, загрязнённых этими токсинами, вызывает у животных микотоксикозы, которые характеризуются рядом клинических признаков в зависимости от вида токсинов. У животных снижается продуктивность и поедаемость кормов, увеличивается восприимчивость к различным заболеваниям. Существует две формы микотоксикозов: острые микотоксикозы, возникающие из-за потребления высокой разовой дозы микотоксинов, и хронические микотоксикозы из-за постоянного потребления низких уровней микотоксинов в течение продолжительного времени. Хронический токсикоз, вызванный низким уровнем воздействия микотоксинов в течение продолжительного времени, представляет собой более распространённую проблему для здоровья животных и качества пищевых продуктов для людей. В целом объёмистые корма и зерновые компоненты, входящие в состав рациона, подвержены загрязнению афлатоксинами на всех этапах производства кормов, таких как сбор, транспортировка, хранение, переработка и упаковка. В последнее время учёные стали уделять больше внимания загрязнению кормов микотоксинами и механизмам борьбы с разными группами токсинов. Основной задачей при производстве кормов является снижение концентрации токсинов на всех этапах — от поля до рациона животных. This article focuses on the effect of mycotoxins on dairy cow health and productivity. To this day toxins produced by various fungi are one of the most serious dangers for cattle. It is known that spores usually contaminate plant and later grain material from soil. Mycotoxins are secondary metabolites such as aflatoxins (AF) produced by Aspergillus spp., fumonisins (FUM), zearalenone (ZEN), T-2 (T-2), deoxynivalenol (DON) produced by Fusarium spp., ochratoxin A (OTA) produced by Penicillium spp., and many others. Toxin-contaminated forage causes mycotoxicoses of different severity depending on toxin type. Livestock shows low productivity and appetite but high susceptibility to diseases There are two types of mycotoxicoses: acute mycotoxicoses, caused by high concentration of toxins and the chronic ones, occurring due to constant long consumption of low toxin levels. Chronic toxicosis is a more common problem for animal health and food quality. Bulk and grain feed are highly affected by aflatoxins at such production stages as harvesting, transporting, storage, processing and packaging. Lately scientists drew more attention to toxin contamination issue and methods controlling their accumulation. The main task when producing forage is to reduce toxin concentration at all the production stages.

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