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Apr 26, 2022Keywords:
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Main Article Content
Assessment of phenotypes, physiological and behavioural responses associated with heat tolerance among Galla goats in North Eastern Kenya.
Abstract
Galla goats have great adaptation vigor to different environments. However, the outcomes of the ongoing climate change have subjected livestock including the Galla goats to harsh environmental conditions like high ambient temperatures. In this study, Galla goats were characterized in the selected areas based on phenotypic, physiological, and behavioural responses to high environmental temperature. One hundred and forty-nine Galla goats selected from Isiolo, Garissa and Tana River were scored for various features such as coat colour, horn colour, skin colour, horn shape, horn length, ear orientation, ear length, wattles and horn circumference. Data collected were entered in an excel spread sheet then analyzed in R statistical software version 4.0.4. White was found to be the dominant coat colour with a percentage frequency greater than 60.0% in the studied counties. The study revealed that both male and female Galla goats possess horns with more than 88.9% of goats being horned across the three counties. There was a strong relationship between horn presence and the environmental temperature with p=0.05. A positive correlation was also observed between environmental temperature and rectal temperature, horn length, ear length and horn circumference. The findings show the presence of an important gene pool from which guidelines on conservation of heat stress phenotypes as a result of the ongoing climate change can be put in place.
