Does organic selenium supplement affect the thermoregulatory responses of dairy goats?

Silveira, Robson Mateus Freitas; Silva, Benedita Eliomara Brito e; Vasconcelos, Angela Maria de; Façanha, Débora Andréa Evangelista; Martins, Thays Paulina; Rogério, Marcos Cláudio Pinheiro; Ferreira, Josiel

doi:10.1080/09291016.2019.1607988

Cited by 17 publications

(2 citation statements)

References 28 publications

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“…This fact has already been verified in works with cattle [8,9], goats [10], sheep [11,12] and other species [13,14]. In the Amazon region, where the climate is predominantly equatorial, the largest buffalo herd in Brazil is located [15].…”

Section: Introductionmentioning

confidence: 75%

Effects of Climatic Conditions and Supplementation with Palm Cake on the Thermoregulation of Crossbred Buffaloes Raised in a Rotational Grazing System and with Natural Shade in Humid Tropical Regions

Brcko,

Silva,

Garcia

et al. 2023

Animals

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In ruminants, diet composition has a positive correlation with heat production, which can influence thermoregulation, energy expenditure and, consequently, animal performance. The objective of this work was to evaluate the effects of climatic conditions and supplementation based on palm kernel cake, on the thermoregulation of crossbred buffaloes in the eastern Amazon. The research was carried out at Embrapa Amazônia Oriental (01°26′ S and 48°24′ W), Belém, Pará, and lasted 12 months (representing the entire year). Twenty-four buffaloes, females, with initial age and an average weight of 54 ± 7 months and 503.1 ± 23 kg, respectively, non-pregnant, non-lactating and clinically healthy were used, divided into four treatments based on the supplementation content of the palm cake (%DM) in relation to their body weight (%): 0, 0.25, 0.50 and 1.0. The animals were kept in paddocks with Brachiaria brizantha (cv. Marandu), in a rotating system, with water to drink and mineral salt ad libitum. Equipment was installed to record environmental data (temperature and relative humidity, dew point temperature, wet bulb and black globe) and physiological data: rectal temperature (RT); respiratory rate (RR); and body surface temperature (BST), recorded twice a day, always in the morning (6:00 a.m. to 7:00 a.m.) and afternoon (12:00 p.m. to 1:00 p.m.) shifts, and were used to calculate the Globe Temperature and Humidity Index (GTHI). Supplementation did not influence the physiological variables of thermoregulation (p > 0.05). However, there were differences in the GTHI between the shifts, with higher means in the afternoon shift, especially in the less rainy period of the year, where the GTHI reached 92.06 ± 2.74 (p < 0.05). In all periods of the year, the mean values of RT, RR and BST were higher in the afternoon shift (p > 0.05). The respiratory rate (RR) is associated with the annual seasonality of the thermal waters, with higher averages in the afternoons of the rainy season. The positive correlation for rectal temperature, respiratory rate and body surface temperature indicated that buffaloes respond to thermal elevations in the atmosphere (afternoon period) and, consequently, reflect on the GTHI. Supplementation does not influence thermoregulation; the changes observed occurred in response to the region’s thermal and rainfall conditions (mainly in the afternoon shift), with higher GTHI values.

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Section: Introductionmentioning

confidence: 75%

Effects of Climatic Conditions and Supplementation with Palm Cake on the Thermoregulation of Crossbred Buffaloes Raised in a Rotational Grazing System and with Natural Shade in Humid Tropical Regions

Brcko,

Silva,

Garcia

et al. 2023

Animals

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“…In goats, supplementation of antioxidants (vitamin C and vitamin E with selenium) was studied on Acid-Base Balance during Heat Stress and had ameliorative effects on physiological parameters, endocrine responses and acid-base status during heat stress [83]. Reduction of endogenous heat by decreasing respiratory thermolysis in dairy goats was also reported with supplementation of organic selenium, in addition to increasing sensible and latent heat release and maintaining rectal temperature within normal limits [84].…”

Section: Antioxidantsmentioning

confidence: 99%

Recent Advancement in Goat Nutrition

Matovu¹,

Alçiçek²

2023

Goat Science - Environment, Health and Economy

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Nutrition or feeding is one of the most important components in livestock production and it’s associated with high costs. In goat production, it can typically account for 60% or more of total production costs. As a result, there is much new research being conducted on goat feeding and nutrition in a variety of areas regarding production costs, sustainability, and quality of the product produced. Areas of research that are currently receiving much attention include feed additives such as prebiotics, probiotics, enzymes, antioxidants, plant secondary metabolites, etc. Their use in animal feed is expected to increase due to the abolition of synthetic antimicrobials in feed, although there is still limited information on their use and is accompanied by contradictory research reports. This study aims to highlight some of the recent and emerging studies on the different feed resources, feed additives and dietary feed composition for goats.

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