Effects of heat stress and a low energy diet on blood parameters and liver hsp70 and iNOS gene expressions in local chickens

Autor:	E.C.J. Phiri, Amandus P. Muhairwa, Paul Khondowe, B. M. Mutayoba
Jazyk:	angličtina
Rok vydání:	2021
Předmět:	Serum corticosterone Ecotype General Veterinary Veterinary medicine Temperature Factorial experiment Biology Stress Article Poultry Heat stress Hsp70 Animal science Low energy diet SF600-1100 Animal Science and Zoology Blood parameters Corticosterone Tolerance Inos gene
Zdroj:	Veterinary and Animal Science Veterinary and Animal Science, Vol 14, Iss, Pp 100221-(2021)
ISSN:	2451-943X
Popis:	Two experiments were conducted to compare effects of heat stress and its combination with low dietary energy on blood indices, liver hsp70 and iNOS gene expressions in three Tanzanian local chicken ecotypes. In experiment one, five weeks old Kuchi (K), Ching'wekwe (C) and Morogoro medium (M) were randomly allocated to separate pens in a 3 × 2 factorial design in two adjacent rooms with controlled temperature. The study had three replicates consisting of 39 chickens per room, 13 per ecotype per pen making a total of 234 chickens. In one room, temperature was maintained at 26.5 ± 0.5 °C while in another it was maintained at 32±1 °C for 7 days and thereafter 37±1 °C for 10 days. A similar design was used in experiment two except that chickens were fed 55% less energy. In experiment one, serum corticosterone levels increased (p
Databáze:	OpenAIRE
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