#PAGE_PARAMS# #ADS_HEAD_SCRIPTS# #MICRODATA#

Vaginal temperature as indicative of thermoregulatory response in Nellore heifers under different microclimatic conditions


Autoři: Caroline Carvalho de Oliveira aff001;  Fabiana Villa Alves aff002;  Paulo Gustavo Macedo de Almeida Martins aff003;  Nivaldo Karvatte Junior aff004;  Geovani Ferreira Alves aff005;  Roberto Giolo de Almeida aff002;  Ariadne Pegoraro Mastelaro aff006;  Eliane Vianna da Costa e Silva aff001
Působiště autorů: Faculty of Veterinary Medicine and Animal Science, Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil aff001;  Embrapa Beef Cattle, Campo Grande, MS, Brazil aff002;  Department of Animal Science, Federal University of Jequitinhonha and Mucuri Valleys, Diamantina, MG, Brazil aff003;  Faculty of Veterinary and Animal Science, Federal University of Goiás, Goiânia, GO, Brazil aff004;  Faculty of Engineering, Architecture and Urbanism, and Geography, Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil aff005;  Faculty of Animal Science, Federal University of Paraná, Paraná, PR, Brazil aff006
Vyšlo v časopise: PLoS ONE 14(10)
Kategorie: Research Article
doi: https://doi.org/10.1371/journal.pone.0223190

Souhrn

The objective was to evaluate vaginal temperature as a thermoregulatory response of Nellore heifers under different microclimatic conditions. The study was conducted during one year in an experimental area located at 54°37′W, 20°27′S, and 530 m of altitude in Brazil. Twenty-four Nellore females were reared in integrated crop-livestock-forestry systems with different shading patterns. The randomized complete block experimental design was utilized with a sub subdivided plots scheme, with plot corresponding to the production systems, the subplot to the season of the year, and the sub subplot, the hours of the day. To characterize the microclimate, data regarding air and black globe temperatures, and air relative humidity were collected and from them, temperature-humidity index was calculated. Vaginal temperature was obtained by using a bottom-type temperature logger (i-button) attached to an adapted intravaginal device. The black-globe temperature explained the variation on vaginal temperature. Increases on vaginal temperature were only observed, on average, two hours after the increase of black-globe temperature. The microclimatic conditions found in the systems, resulting from the various tree densities, modify the vaginal temperature in different degrees, demonstrating that the shading effect is not always accompanied by improvements in thermal comfort. The system with intermediate density showed a better microclimatic condition and, consequently, a lower increase in vaginal temperature. The interaction between air temperature, humidity and solar radiation resulted in adverse environmental conditions, however, Nellore heifers showed good adaptation to the environment. In conclusion, vaginal temperature is a good indicator to evaluate the thermoregulatory response in Nellore heifers.

Klíčová slova:

Body weight – Cattle – Rectum – Seasons – Solar radiation – Thermal stresses – Trees – Humidity


Zdroje

1. Silva RG. Introdução à bioclimatologia animal. São Paulo: Nobel; 2000.

2. Silanikove N, Shapiro F, Shinder D. Acute heat stress brings down milk secretion in dairy cows by up-regulating the activity of the milk-borne negative feedback regulatory system. BMC Physiol 2005; 9:13. doi: 10.1186/1472-6793-9-13 19563620

3. Azevedo M, Pires MFA, Saturnino HM, Lana AMQ, Sampaio IBM, Monteiro JBN, et al. Estimativas de níveis críticos superiores do índice de temperatura e umidade para vacas leiteiras ½, ¾ e 7/8 Holandês-Zebu em lactação. R Bras Zootec. 2005; 34(6):2000–2008. doi: 10.1590/S1516-35982005000600025

4. Maia ASC, Silva RG, Bertipaglia ECA. Características do pelame de vacas Holandesas em ambiente tropical: Um estudo genético adaptativo. R Bras Zootec. 2003; 32(4):843–853. doi: 10.1590/S1516-35982003000400009

5. Sandeville E. Jr A divisão natural das paisagens brasileiras. Paisagem Ambiente Ensaios. 2004; 18:71–98. doi: 10.11606/issn.2359-5361.v0i18p71-98

6. Kottek M, Grieser J, Beck C, Rudolf B, Rubel F. World map of the Köppen-Geiger climate classification updated. Meteorol Z. 2006; 15:259–263. doi: 10.1127/0941-2948/2006/0130

7. Marcuzzo FFN, Melo DCR, Costa HC. Sazonalidade e distribuição espaço-temporal das chuvas no bioma do cerrado do estado do Mato Grosso do Sul. Rev Bras de Recur Híd. 2012; 17(1):77–86.

8. Flumignan DL, Fietz CR, Comunello E. O clima na região do bolsão de Mato Grosso do Sul. Dourados: Embrapa; 2015. Documentos 127.

9. Oliveira CC, Villela SDJ, Almeida RG, Alves FV, Behling-Neto A, Martins PGMA. Performance of Nellore heifers, forage mass, and structural and nutritional characteristics of Brachiaria brizantha grass in integrated production systems. Trop Anim Health Prod. 2014; 46:167–172. doi: 10.1007/s11250-013-0469-1 24043417

10. Oliveira CC, Alves FV, Almeida RG, Gamarra EL, Villela SDJ, Martins PGMA. Thermal comfort indices assessed in integrated production systems in the Brazilian savannah. Agroforest Syst. 2018; 92:1659–1672. doi: 10.1007/s10457-017-0114-5

11. Trumbo BA, Wise LM, Hudy M. Influence of protective shielding devices on recorded air temperature accuracy for a rugged outdoor thermal sensor used in climate change modeling. Nat Env Sci. 2012; 3(1):42–50.

12. Souza CF, Tinôco IFF, Baêta FC, Ferreira WPM, Silva RS. Avaliação de materiais alternativos para confecção do termômetro de globo. Ciênc Agrotec. 2002; 26(1):157–164.

13. Buffington DE, Collazo-Arocho A, Canton GH, Pitt D, Thatcher WW, Collier RJ (1981) Black globe-humidity index (BGHI) as comfort equation for dairy cows. Trans Am Soc Agric Eng. 1981; 24:711–714. doi: 10.13031/2013.34325

14. Baêta FC. Responses of lactating dairy cows to the combined effects of temperature, humidity and wind velocity in the warm season [dissertation]. Columbia: University of Missouri; 1985.

15. Burdick NC, Carroll JA, Dailey JW, Randel RD, Falkenberg SM, Schmidt TB Development of a self-contained, indwelling vaginal temperature probe for use in cattle research. J Therm Biol. 2012; 37(4):339–343. doi: 10.1016/j.jtherbio.2011.10.007

16. Hooper HB, Henrique FL, Rodríguez LFP, Pereira AMF, Titto CG, Titto AL. Heat loss efficiency and thermoregulation responses of Nellore cows. Paper presented at: VII Brazilian Congress of Biometeorology, Ambience, Behaviour and Animal Welfare; 2017; Jaboticabal, Brazil. doi: 10.6084/m9.figshare.5176753

17. Kelly CF, Bond TE. Bioclimatic factors and their measurements. In: National Academy of Sciences: a guide to environmental research on animals. NAS, Washington; 1971.

18. Baêta FC, Souza CF. Ambiência em edificações rurais: Conforto animal. 2nd ed. Viçosa, Brazil: Editora UFV; 2010.

19. Ferreira PM, Facury Filho EJ, Campos WE. Parâmetros fisiológicos de bovinos cruzados submetidos ao estresse calórico. Arq Bras Med Vet Zootec. 2006; 58(5):732–73. doi: 10.1590/S0102-09352006000500005

20. Ferreira R. Maior produção com melhor ambiente para aves, suínos e bovinos. Viçosa, Brazil: Aprenda Fácil Editora; 2005.

21. Wenz JR, Moore DA, Kasimanickam R. Factors associated with the rectal temperature of Holstein dairy cows during the first 10 days in milk. J Dairy Sci. 2011; 94:1864–1872. doi: 10.3168/jds.2010-3924 21426976

22. Barbosa BRP, Santos SA, Abreu UGP, Egito AA, Comastri Filho JA, Juliano RS, et al. Tolerância ao calor em bovinos das raças Nelore branco, Nelore vermelho e Pantaneiro. Rev Bras Saúde Prod Anim. 2014; 15(4):854–865.

23. Karvatte N, Klosowski ES, Almeida RG, Mesquita EE, Oliveira CC, Alves FV. Shading effect on microclimate and thermal comfort indexes in integrated crop-livestock-forest systems in the Brazilian Midwest. Int J Biometeorol. 2016; 60:1–9. doi: 10.1007/s00484-015-1030-x


Článek vyšel v časopise

PLOS One


2019 Číslo 10
Nejčtenější tento týden
Nejčtenější v tomto čísle
Kurzy

Zvyšte si kvalifikaci online z pohodlí domova

KOST
Koncepce osteologické péče pro gynekology a praktické lékaře
nový kurz
Autoři: MUDr. František Šenk

Sekvenční léčba schizofrenie
Autoři: MUDr. Jana Hořínková

Hypertenze a hypercholesterolémie – synergický efekt léčby
Autoři: prof. MUDr. Hana Rosolová, DrSc.

Svět praktické medicíny 5/2023 (znalostní test z časopisu)

Imunopatologie? … a co my s tím???
Autoři: doc. MUDr. Helena Lahoda Brodská, Ph.D.

Všechny kurzy
Kurzy Podcasty Doporučená témata Časopisy
Přihlášení
Zapomenuté heslo

Zadejte e-mailovou adresu, se kterou jste vytvářel(a) účet, budou Vám na ni zaslány informace k nastavení nového hesla.

Přihlášení

Nemáte účet?  Registrujte se

#ADS_BOTTOM_SCRIPTS#