The impact of temperature-humidity index on blood morphology and β-hydroxybutyrate in different sheep breeds

Autukaitė, Jurgita; Poškienė, Indrė; Juozaitienė, Vida; Antanaitis, Ramūnas; Žilinskas, Henrikas

doi:10.2754/avb202089030247

Cited by 4 publications

(4 citation statements)

References 20 publications

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“…Physiological indicators of blood are very important for farms to assess the physiological conditions of livestock and poultry ( 75 ). Seasonal change can directly affect the physiological function of animal, and its physiological indexes will change accordingly ( 19 , 76 ). Studies have reported that with the change of seasons, sheep's blood physiological indicators will also change ( 77 ).…”

Section: Discussionmentioning

confidence: 99%

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Seasonal Differences in Fecal Microbial Community Structure and Metabolism of House-Feeding Chinese Merino Fine-Wool Sheep

Zhang

Shahzad

et al. 2022

Front. Vet. Sci.

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The digestive tract microorganisms play a very important role in the host's nutrient intake, environmental suitability, and affect the host's physiological mechanism. Previous studies showed that in different seasons, mammalian gut microbes would be different. However, most of them are concentrated in wild animals. It remains unclear how seasonal change affects the gut microbes of Chinese merino fine-wool Sheep. Therefore, in this experiment, we continuously collected blood and feces samples of 50 Chinese merino fine-wool sheep in different seasons, measured the physiological indicators of blood, and passed 16S rRNA amplicon sequencing, determined the microbial community structure of fecal microorganisms and predicted flora function by PICRUSt. The results of blood physiological indicators showed that WBC, Neu and Bas in spring were significantly higher than those of other seasons. Fecal microbial sequencing revealed seasonal changes in gut microbial diversity and richness. Among them, Chinese merino fine-wool sheep had the highest gut microbes in summer. Firmicutes and Bacteroidetes were the dominant phyla, and they were unaffected by seasonal fluctuations. LEfSE analysis was used to analyze representative microorganisms in different seasons. The Lachnospiraceae and its genera (Lachnospiraceae_NK4A136_group, Lachnospiraceae_AC2044_group, g_unclassified_f_ Lachnospiraceae) were representative microorganisms in the three seasons of spring, summer and winter with harsh environmental conditions; while in autumn with better environmental conditions, the Ruminococcaceae and its genus (Ruminococcaceae_UCG-009 and Ruminococcaceae_UCG-005) were the representative microorganism. In autumn, the ABC transporter and the pyruvate metabolic pathway were significantly higher than other seasons. Correlation analysis results showed that Lachnospiraceae participated in the ABC transporters metabolic pathway, which caused changes in the blood physiological indicators. Overall, our results showed that, in response to seasonal changes, Chinese merino fine-wool sheep under house-feeding have adjusted their own gut microbial community structure, causing changes in the metabolism, and thus changing the physiological conditions of the blood. In the cold season, producers should focus on regulating the nutritional level of feed, enhancing the level of butyric acid in young animals to increase the ABC transporter, resist the external harsh environment, and improve the survival rate.

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Section: Discussionmentioning

confidence: 99%

“…The vacuum tube for blood collection contained 10% EDTA anticoagulant. The blood sample was kept at 8°C and delivered to the lab for physiological index determination right away ( 19 ).…”

Section: Methodsmentioning

confidence: 99%

Seasonal Differences in Fecal Microbial Community Structure and Metabolism of House-Feeding Chinese Merino Fine-Wool Sheep

Zhang

Shahzad

et al. 2022

Front. Vet. Sci.

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“…Many studies conducted under various environmental conditions have confirmed the impact of limited water availability on haematocrit levels [34][35][36]. The reduced value of the haematocrit level in Świniarka breed can be interpreted as an indicator of dehydration or anaemia during grazing in the K ąty region.…”

Section: Discussionmentioning

confidence: 93%

Some Physiological Responses of Native Sheep Breeds to Environmental Conditions during Grazing in Natura 2000 Habitats

et al. 2023

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The calcareous xerothermic grasslands of the Festuco-Brometea class are among the most endangered Natura 2000 sites in Europe. The greatest threats include a lack of grazing, secondary succession, and invasive alien and expansive native species. The abandonment of such grasslands is caused by the low nutritional value of biomass, as well as by difficult habitat conditions. The aim of this study was to assess the physiological responses of native sheep breeds to hard environmental conditions when grazing in Natura 2000 habitats and to confirm the hypothesis that native sheep of the Świniarka and Uhruska breeds can be used to protect valuable natural habitats. The analysed grasslands were characterised by very difficult climatic and edaphic conditions and a low fodder value for sheep. Grazing in environmentally valuable areas, sometimes poor in fodder, did not adversely affect the welfare of grazed sheep. In both the Uhruska and Świniarka breeds, there were no indicators for heat or nutritional stress, but physiological changes were observed in the animals’ adaptation to new environmental conditions. Despite poor fodder positions, Świniarka sheep improved their condition and body weight. Fluctuations in indicators showing an adaptation process were also visible.

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“…Various studies have focused on the assessment of stress and welfare in farm animals (Nečasová et al 2019;Píšťková et al 2019;Večerková et al 2019;Večerek et al 2020Večerek et al , 2021. Increasing summer temperatures present one of the stressors for livestock (Autukaite et al 2020). During the summer months, however, cattle is also exposed to another stress factor which is insect pests.…”

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confidence: 99%

Pest flies on dairy farms affect behaviour and welfare of dairy cows during summer season

et al. 2021

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Monitoring of changes in the behaviour of dairy cows related to the occurrence of insects in the stable and in the milking parlour was carried out on a selected dairy farm during the summer season. The effect of the number of insects on the occurrence of huddling of dairy cows in the stable was proved. Huddling occurred significantly (P = 0.003) more often when the number of insects captured by fly glue traps exceeded 500 individuals. The occurrence of pest flies affected also the behaviour of dairy cows during milking. With the increasing number of insects captured by glue traps in the milking parlour, the cows more frequently kicked off the milking units (r = 0.944, P < 0.001) and defecated (r = 0.940, P < 0.001) during milking. In addition, the increasing number of captured insects correlated with a significantly lower milk yield in cows (r = -0.709, P < 0.001). The number of insects in the stable also correlated with the incidence of mastitis in dairy cows on the monitored farm (r = 0.681, P < 0.001) during the summer season. The study shows that pest flies affect the behaviour of cows which is further reflected in their health, milk production and thus the overall farm performance.

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The impact of temperature-humidity index on blood morphology and β-hydroxybutyrate in different sheep breeds

Cited by 4 publications

References 20 publications

Seasonal Differences in Fecal Microbial Community Structure and Metabolism of House-Feeding Chinese Merino Fine-Wool Sheep

Seasonal Differences in Fecal Microbial Community Structure and Metabolism of House-Feeding Chinese Merino Fine-Wool Sheep

Some Physiological Responses of Native Sheep Breeds to Environmental Conditions during Grazing in Natura 2000 Habitats

Pest flies on dairy farms affect behaviour and welfare of dairy cows during summer season

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