Prediction of Comfort for Dairy Cows, Depending on the State of the Environment and the Type of Barn

Mylostyvyi, Roman; Agrarian, Dnіpro State; Chernenko, Oleksandr; Lisna, Alisa

doi:10.30525/978-9934-571-78-7_53

Cited by 4 publications

(7 citation statements)

References 2 publications

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“…The animals have free access to water (group drinkers for animals) and feed (table for feeding). The climate features in the barn we described previously [17] are similar to the state of the environment. Large-diameter fans work indoors around the clock during the warm period.…”

Section: Methodssupporting

confidence: 66%

“…where THI is temperature-humidity index [19], THI CHT is temperature-humidity index in the hangar-type cowshed, T is ambient air temperature ( • C), and RH is relative humidity (%). THI CHT is an indicator we suggested previously [17], on the basis of repeated temperature and humidity measurements in an animal room throughout the year. This indicator was used because the animals in the study were kept in exactly a hangar-type barn.…”

Section: Methodsmentioning

confidence: 99%

“…Accordingly, the distribution of their values in time is given more specifically (Table 5). Note: The gradation of temperature and humidity index values was made as follows: values below 68 correspond to comfortable conditions for cows, 68-71 corresponds to slight stress, 72-79 to moderate stress, and 80-89 to strong stress [17].…”

Section: Monthmentioning

confidence: 99%

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Correlations between Environmental Factors and Milk Production of Holstein Cows

Mylostyvyi

Chernenko

2019

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Global climate change is a challenge for dairy farming. In this regard, identifying reliable correlations between environmental parameters and animals’ physiological responses is a starting point for the mathematical modeling of their effects on the future welfare and milk production of cows. The aim of the study was to examine the relationship between environmental parameters and the milk production of cows in hot period. Archival data from the Ukrainian Hydrometeorological Center were used to study the state of insolation conditions (IC), wind direction (WD), wind strength (WS), air temperature (AT), and relative humidity (RH). The temperature–humidity index (THI) (Kibler, 1964) and temperature–humidity index in the hangar-type cowshed (THICHT) (Mylostyvyi et al., 2019) served as integral indicators of the state of the cowshed’s microclimate. The daily milk yield (DMY), yield of milk fat (MF) and milk protein (MP), and percentage of milk fat (PMF) and protein (PMP) were taken into account by the DairyComp 305 herd management system (VAS, USA). Statistical data processing was performed using the mathematical functions of Microsoft Excel (Microsoft Inc.) and Statistica 10 (StatSoft Inc.). There was a weak correlation between IC and DMY at r = −0.2, between RH and DMY at r = +0.4, and between RH and MF at r = +0.2. Between DMY, MF, MP, and WS made up r = –0.2 to 0.4. Between DMY, MF, MP, and AT made up r = −0.2 to 0.5 (p < 0.05). The effects of weather factors on animal productivity will be the subject of further research.

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Section: Methodssupporting

confidence: 66%

Section: Methodsmentioning

confidence: 99%

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Correlations between Environmental Factors and Milk Production of Holstein Cows

Mylostyvyi

Chernenko

2019

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“…Table 1. Calculation of ТНІ* values taking into account regional climatic conditions of the steppe of Ukraine (Mylostyvyi et al, 2019a) Temperature, °С…”

Section: Problematic Issuesmentioning

confidence: 99%

“…Effective ventilation could reduce HS by increasing the rate at which heat is convectively transferred from the animal to the surrounding air (Broucek et al, 2019). However, none of the systems can provide a sufficient amount of fresh air and the necessary cooling of each individual animal (Wang et al, 2018c), including due to the uneven distribution of air and significant differences in the THI value in the room (Schüller et al, 2016;Mylostyvyi et al, 2019a).…”

Section: Animal Comfortmentioning

confidence: 99%

Features of the formation and monitoring of the microclimate in non-insulated barns: unresolved issues

Mylostyvyi

Vysokos

TIMOSHENKO

et al. 2020

TAVM

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Modern non-insulated barns (NB) for free-stall housing of dairy cows differ from traditional (typical) capital buildings. The formation of the microclimate in such farms is significantly dependent on the state of the environment and their design features. The aim of the work was to give a review of the literature and the results of our own research on creating comfortable conditions for dairy cows in the NB. Our studies indicate the heterogeneity of the microclimate formation in different parts of the NB, which was largely due to the state of the external environment. The use of only natural ventilation through open side curtains and light ridges, as well as additional mechanical ventilation (due to horizontal axial fans) cannot always provide comfortable conditions for animals, especially in hot periods of the year. The literature analysis showed that this can be caused by factors affecting the formation and movement of air masses in the building itself (depending on the number of animals, the condition of the litter, the operation of internal equipment, including space-planning and design features, type and quality of materials of enclosing structures) as well as the weather conditions outside buildings (temperature, humidity, wind strength and also relief). Investigations related to remote methods of microclimate control (using appropriate portable devices) and identification of (critical) control points of deterioration of the air environment in NBs will be promising. Monitoring of them will allow timely to adopt the necessary management decisions for ensuring the comfort of dairy cows in extreme weather conditions. Climate prediction methods based on meteorological data in the area of the NB location and the development of intelligent ventilation systems using mathematical modeling that take into account the behavioral and physiological responses of animals to environmental changes will be especially in demand.

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Energy evaluation of cows using genetic markers

Gubarenko

2020

Ukr. Jour. of Vet. and Agr. Sci.

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The aim of the study was to research the polymorphism of allelic variants of somatotropin GH genes and pituitary-specific transcription factor PIT-1 and its influence on bioenergetic parameters of high-yielding of Holstein breed cows in intensive milk production technology (cold method of growing heifers, early insemination of heifers. high daily operating loads on the body, etc.). Genotypes of cows were determined by PCR. Blood DNA was examined in a genetic laboratory. Isolation of genomic DNA was performed using resin “Chelex-100”. The reaction was performed in an amplifier “Tertsyk”. For the energy assessment of first-born cows used indicators of net maintenance energy (MJ per day), net milk energy (MJ per day), total net energy consumption (MJ per day), the value of the energy index (the share of energy released from milk, %), productivity index (kilogram of 4 % milk per 1 MJ), net energy consumption per 1 MJ of milk (MJ), energy released with milk per 1 kg of metabolic mass (MJ). The best energy parameters in cows by GH gene – LL genotype, by pituitary-specific transcription factor PIT-1 – AB genotype, and among paired genotypes – LL/AB and LL/BB. In these animals, bioenergetic indicators for the first and second periods of lactation were higher than their peers of LV, BB and LV/BB genotypes by 2.0–15.2 %, with a reliable result for most traits. In particular, during the first lactation period, the advantage of cows of the LL/AB genotype over the LV/BB genotype in terms of bioenergetic indicators was 3.9–15.2 %, significantly less than in the second lactation period in the range of 1.8–7.4 %. In the genome of pituitary-specific transcription factor PIT-1, better bioenergetic parameters were found in cows of genotype AB than in cows of genotype BB. The difference in bioenergetic parameters is explained by the higher lactotropic function of the L and A alleles, and is the result of a greater complementary effect on the functioning of the alleles of the associated genes in the complex genotype. This was confirmed by the analysis of variance of one-factor complexes, which revealed a stronger influence of genotypes on bioenergetic parameters during the first period of lactation than the second. However, the strength of the influence of the paired genotype on the GH and PIT-1 genes was always high regardless of the lactation period and ranged from 8.9 to 20.9 % (P < 0.01–0.001). In the future, it is of interest to study the formation of the exterior and constitution of cows of different genetic influences under the influence of polymorphisms in the GH and PIT-1 genes.

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Prediction of Comfort for Dairy Cows, Depending on the State of the Environment and the Type of Barn

Cited by 4 publications

References 2 publications

Correlations between Environmental Factors and Milk Production of Holstein Cows

Correlations between Environmental Factors and Milk Production of Holstein Cows

Features of the formation and monitoring of the microclimate in non-insulated barns: unresolved issues

Energy evaluation of cows using genetic markers

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