DISTRIBUTION OF QUALITATIVE TRAITS AND HAEMOGLOBIN TYPE AMONG RED SOKOTO GOATS IN SEMI-ARID ZONE OF NIGERIA

O. A. Ibrahim, G. E. Jokthan, I. Mallam, R. O. Alao, L. A. Jinadu, C. M. Umego

Abstract


This research was conducted to determine the age distribution of Red Sokoto Goats of 6 months and above according to coat type, hair type, tail shape, tassels, sex and haemoglobin type that may serve as indicators for production performance and determine the existing associations of haemoglobin types and body physical characteristics. A total of 321 Red Sokoto goats were used for the study and 213 of them were sampled for haemoglobin type. The population of Red Sokoto goats Hb types was studied in Hardy-Weinberg equilibrium. The frequencies of observed morphological characteristics such as coat type, hair type, tail shape, tassels and their Hb types, age, sex were recorded. Four haemoglobin types were discovered, namely; HbAA, HbAB, HbBB and HbAC. Only two (2) animals sampled had the rare pre-adult haemoglobin type (HbAC). The distribution of all the parameters were determined using Descriptive Statistics and the Haemoglobin types were expressed as homozygous (HbAA and HbBB) and heterozygous (HbAB and HbAC); phenotypes with HbAC being a pre-adult form of Hb and were determined. The red sokoto goats within 8 months of age had the highest frequencies (24.61 %) while the least (3.12 %) was obtained in those that are within 48 months. The highest coat type, hair type and tail shape were found in Brown (B), Short-smooth (SS) and Curled up (CU) respectively. The Red Sokoto goats without tassels (308) were more than those with tassel (13). The 89.4% frequencies in female red sokoto goats were higher than those in male (10.6 %). In can be concluded that Hb type and other physical characteristics can serve as indicators for production. Also, variation in our goat herd could be drastically improved within a short time. Larger sample sizes could also come to ones’ aid when investigating traits or physical characteristics that are not so common such as tassels. Further work of this nature should be carried out on different breeds of goats and the results for each breed could then be compared with one another to find the trend in results.


Keywords


Goat, Red Sokoto, Qualitative traits, Semi-arid and Haemoglobin type

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