Effects of breed and sex on the adaptive profile of tropical goats

Authors

  • Jeremiah Terzungwe Timveh Nasarawa State University, Keffi, Shabu-Lafia Campus
  • Abdulmojeed Yakubu Nasarawa State University, Keffi, Shabu-Lafia Campus
  • Samuel Emmanuel Alu Nasarawa State University, Keffi, Shabu-Lafia Campus

Keywords:

Heat stress, blood markers, goats, prediction, tropics

Abstract

This study was embarked upon to evaluate breed and sex effects on the thermo-physiology and blood parameters; predict heat stress index and appropriately classify Nigerian West African Dwarf (WAD) and Red Sokoto (RS) goats in a 2 x 2 factorial experiment involving twenty four goats. WAD goats had higher rectal temperature (38.93±0.10 versus 38.59±0.10) and pulse rate (54.78±0.24 vs. 53.67±0.24) compared to their RS counterparts. However, there was no significant difference in heat stress index between WAD and RS goats. Based on thermo-physiological parameters, male goats appeared to be more stressed. There was no significant Breed * Sex interaction effect on thermo-physiological traits. The results of haematological and serum biochemical and hormonal indices of goats also indicated that WAD goats appeared to be more stressed. The male goats had higher Cortisol (58.00±4.88 versus 37.67±4.88) and lower Thyroxine (111.50±8.32 vs. 141.18±8.32) levels. There was no significant Breed * Sex interaction effect on haematological indices. While male and female WAD goats were similar, female RS goats had higher value of TSH (1.20±0.21) than their male counterparts (0.57±0.21). The Artificial Neural Network algorithm revealed that respiratory rate, cortisol, pulse rate and WBC had more influence on heat stress prediction in goats compared to breed, sex and other haematological, serum biochemical and hormonal parameters. Haemoglobin, white blood cells, rectal temperature and pulse rate were sufficient to correctly assign WAD and RS goats to their appropriate breed. The present information may aid breed characterization and conservation of WAD and RS goats.

 

Keywords: Heat stress, blood markers, goats, prediction, tropics

Author Biographies

Jeremiah Terzungwe Timveh, Nasarawa State University, Keffi, Shabu-Lafia Campus

Department of Animal Science

Faculty of Agriculture, Nasarawa State University

Keffi, Shabu-Lafia Campus

950101 Lafia

Abdulmojeed Yakubu, Nasarawa State University, Keffi, Shabu-Lafia Campus

Department of Animal Science

Faculty of Agriculture

Nasarawa State University

Keffi, Shabu-Lafia Campus

950101, Lafia.

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Published

2022-03-31

Issue

Section

Animal Science