Prenatal heat stress effects on gestation and postnatal behavior in kid goats
Coloma Garcia, Wellington Napoleon (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments)
Mehaba, Nabil (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments)
Llonch, Pol (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments)
Caja López, Gerardo (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments)
Such i Martí, Francesc Xavier (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments)
Salama, Ahmed A. K. (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments)

Fecha:	2020
Resumen:	Consequences of heat stress during pregnancy can affect the normal development of the offspring. In the present experiment, 30 Murciano-Granadina dairy goats (41. 8 ± 5. 7 kg) were exposed to 2 thermal environments varying in temperature-humidity index (THI) from 12 days before mating to 45 days of gestation. The environmental conditions were: gestation under thermal-neutral (TN; THI = 71 ± 3); and gestation under heat stress (HS; THI = 85 ± 3) conditions. At 27 ± 4 days old, female kids exposed to in utero TN (IUTN; n = 16) or in utero HS (IUHS; n = 10) were subjected to 2 tests: arena test (AT) and novel object test (NOT), the latter was repeated at 3 months of age. Additionally, 8 months after birth, a subset of IUTH and IUHS growing goats (n = 8 each; 16. 8 ± 3. 4 kg BW) were exposed to 2 environmental conditions in 2 consecutive periods: a basal thermal-neutral period (THI = 72 ± 3) for 7 days, and a heat-stress period (THI = 87 ± 2) for 21 days. In both periods, feeding, resting, posture, and thermally-associated behaviors were recorded. The gestation length was shortened by 3 days in GHS goats. In the AT, IUHS kids showed a lower number of sniffs (P < 0. 01) compared to IUTN. In the NOT, IUHS kids also tended to show a lower number of sniffs (P = 0. 09). During heat exposure, IUTN and IUHS growing goats spent more time resting and exhibited more heat-stress related behaviors such as panting and drinking (P < 0. 001); however, no differences were observed between both groups. In conclusion, heat stress during the first third of pregnancy shortened gestation length and influenced the exploratory behavior of the kids in the early life. However, behavior responses to heat stress during the adulthood were not affected by the in utero thermal treatment.
Ayudas:	Ministerio de Economía y Competitividad AGL2013-44061-R
Derechos:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Lengua:	Anglès
Documento:	Article ; recerca ; Versió publicada
Materia:	Cabres ; Animals Protecció ; Estrès
Publicado en:	PloS one, Vol. 15 Núm. 2 (2020) , ISSN 1932-6203

DOI: 10.1371/journal.pone.0220221
DOI: 10.1101/701151
PMID: 32040479

16 p, 1.3 MB

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