scholarly journals Morphological characteristics of goat breeds in Nigeria using discriminant analysis approach

2021 ◽  
Vol 48 (5) ◽  
pp. 30-40
Author(s):  
E. A. Rotimi ◽  
A. M. Aliyu ◽  
A. Aruwayo

Information on morphological characteristics is a prerequisite to sustainable breed classification and conservation for proper management and utilization. The present study aimed to identify morphological characteristics that best classify the Sahel, Sokoto Red and West African Dwarf goats of Nigeria. A total of 584 goats of both sexes; Sahel (N = 163), Sokoto Red (N = 171) and West African Dwarf (N = 250) were randomly sampled and used for this study. The body parameters measured included body weight (BWT), height at wither (HW), body length (BL), paunch girth (PG), heart girth (HG) and ear length (EL). Multivariate technique of discriminant analysis procedure of SPSS 20.0 statistical package was used to classify the Sahel, Sokoto Red and West African Dwarf goats into their original breed. Accuracy of the classification was checked using cross-validation (leave-one-out, jack-knife or split-sample) procedure. Results showed that the mean body weight (kg) of Sokoto Red was significantly (P<0.05) higher than those of Sahel and West African Dwarf goats (23.596, 17.117 and 14.800 respectively). Highest correlation values were recorded between body weight and height at withers (0.777) in Sahel, body weight and paunch girth (0.707) in Sokoto Red and body weight and heart girth (0.797) in West African Dwarf goats. The discriminant analysis on body weight and the linear body measurements revealed that paunch girth and height at withers were the most discriminating variables and clearly separated and classified the three goat breeds into their breeds of origin. The discriminant function obtained correctly classified 99.0% of individuals from the sample of known goat populations. The classification accuracy of the function was cross-validated using the split sample method, and indicated a 99.0% success rate (97.5%, 100.0% and 99.2% of Sahel, Sokoto Red and West African Dwarf goats respectively). It was concluded that there was a clear separation between Barcha and Atlas goats. It was concluded that discriminant tool may be used successfully in the field to classify Sahel, Sokoto Red and West African Dwarf in the field, however there is need to complement this with molecular characterization using DNA marker for better conservation and improvement programme of indigenous goat genetic resources.   L'information sur les caractéristiques morphologiques est une condition préalable à la classification et à la conservation durables des races pour une gestion et une utilisation appropriées. Cet étude visait à identifier les caractéristiques morphologiques qui classent le mieux les chèvres sahéliennes, rouges de Sokoto et naines d'Afrique de l'Ouest du Nigeria. Un total de 584 chèvres des deux sexes ; Sahel (N = 163), Sokoto Red (N = 171) et West African Dwarf (N = 250) ont été échantillonnés au hasard et utilisés pour cette étude. Les paramètres corporels mesurés comprenaient le poids corporel (PC), la hauteur au garrot (HG), lalongueur du corps (BL), la circonférence de la panse (CP), la circonférence du cœur (CC) et la longueur des oreilles (LO). La technique multivariée de la procédure d'analyse discriminante du progiciel statistique SPSS 20.0 a été utilisée pour classer les chèvres sahéliennes, rouges de Sokoto et naines d'Afrique de l'Ouest dans leur race d'origine. L'exactitude de la classification a été vérifiée à l'aide d'une procédure de validation croisée (en laisser un, un couteau ou un échantillon divisé). Les résultats ont montré que le poids corporel moyen (kg) de Sokoto Red était significativement (P<0,05) supérieur à celui des chèvres naines du Sahel et d'Afrique de l'Ouest (23,596, 17,117 et 14,800 respectivement). Les valeurs de corrélation les plus élevées ont été enregistrées entre le poids corporel et la hauteur au garrot (0,777) au Sahel, le poids corporel et la circonférence de la panse (0,707) chez le Sokoto Red et le poids corporel et la circonférence cardiaque (0,797) chez les chèvres naines d'Afrique de l'Ouest. L'analyse discriminante sur le poids corporel et les mesures corporelles linéaires ont révélé que la circonférence de la panse et la hauteur au garrot étaient les variables les plus discriminantes et ont clairement séparé et classé les trois races caprines dans leurs races d'origine. La fonction discriminante obtenue a correctement classé 99,0 % des individus de l'échantillon de populations caprines connues. La précision de la classification de la fonction a été contre-validée à l'aide de la méthode de l'échantillon divisé et a indiqué un taux de réussite de 99,0 % (respectivement 97,5 %, 100,0 % et 99,2 % des chèvres sahéliennes, rouges de Sokoto et naines d'Afrique de l'Ouest). Il a été conclu qu'il y avait une nette séparation entre les chèvres Barcha et Atlas. Il a été conclu que l'outil discriminant peut être utilisé avec succès sur le terrain pour classer le Sahel, le rouge de Sokoto et le nain d'Afrique de l'Ouest sur le terrain, mais il est nécessaire de le compléter par une caractérisation moléculaire à l'aide d'un marqueur ADN pour une meilleure conservation et un programme d'amélioration de la génétique caprine indigène. Ressources.

2021 ◽  
Vol 33 (1) ◽  
pp. 112-117
Author(s):  
T. O. Bawala ◽  
A. O. Akinsoyinu ◽  
O. R. Folorunsho

Sixteen (16) male of West African dwarf goats, aged 6 to 8 months and weighing 4.85 to 6.80kg were used in protein utilization study to monitor performance. The animals were randomly divided into four groups. Each group was fed foliages of Gliricidia sepium and Ficus thonningii mixed in varying proportions such that 0% (diet 1), 25% (diet 2), 50% (diet 3) and 75% (diet 4) of Gliricidia were replaced with Ficus. The feeding lasted 70 days during which dry matter intake, DM1, and changes in body weight were monitored. At the beginning of the last 10days of the trial animals were trans­ferred to individual metabolic cages for daily collection of faeces and urine for 7 days after the 3 days set aside for adjustment to the cages. Results showed that the mean DM1 was 185.15g day', which amounted to about 2.9% of body weight while digestibility coefficient was 65%. The daily weight gains observed for animals on diets containing 0%, 25%, 50% and 75% of Gliricidia replaced with Ficus leaves were 34.30, 34.29, 37.10 and 36.79g day' respectively. The metabolic faecal nitrogen, MFN, and endogenous urinary nitrogen, ELTN, values were 9.42g kg' DM and 0.85g day­'Kg BW0.745 respectively. Regression model that described the relationship between nitrogen, N, balance and corresponding absorbed N values indicated that the combination of Gliricidia and Ficus leaves could furnish nutrient (3.68g day' kg' BW0..75 digestible crude protein, DCP) which might support young WAD goat requirement for maintenance. Data obtained suggested that all the three combinations of diets could be fed to goats but the inclusion of Gliricidiaand Ficus at equal level of 50%p produced highest weight gain (37.10g day-1) and supported better performance


2021 ◽  
Vol 29 (2) ◽  
pp. 189-194
Author(s):  
A. B. J. Aina ◽  
A. O. Yusuf ◽  
L. A. Sogbade ◽  
O. S. Sowande

An experiment was carried out using 15 West African Dwarf goats (8 - 10kg body weight) to investigate the comparative performance of the animals when different combinations of palm kernel cake and cotton seed cake were contained in their diets. Results indicated that 40% palm kernel cake (zero cotton seed cake) in the diets significantly induced better feed utilization for gain (100g/d) and feed conversion ratio (3.70), least total dry matter intake (4.8% body weight) and leasi water consumption (40ml/ ww. kg; P>0.05) than other combinations. The least crude protein (15.5%) and the highest metabolizable energy (8.37 MJ/kg) diet (40% PKC) provoked the fastest growth rate (100g/d) in the animals. Concentrate intake was higher in all the treatments than grass intake. The blood glucose, total blood protein, blood urea nitrogen and cost per kg body weight (18.3, 13.3, 31.Omg/dl and N33.8 (0.4 US dollar), respectively) were significantly lower in goats fed sole palm kernel cake based diets than those fed combinations of palm kernel cake and cottonseed cake. It is concluded that palm kernel cake alone (without any combination with cottonseed cake) is adequate as protein source in compounding protein supplements for West African Dwarf goats for profitable performance. 


2020 ◽  
Vol 40 (2) ◽  
pp. 143-150
Author(s):  
F. A. Aluko ◽  
O. E. Daramola ◽  
B. B. A. Taiwo

One hundred and twenty West African Dwarf goats were used in this study. Observations were made from twelve different towns in Yewa North, Yewa South and Abeokuta North Local Government. West African dwarf goats were evaluated for phenotypic variation at different ages ranges from 1, 2 and 3 years. Variations in live weight and body measurements such as height at wither; body length, heart girth, fore limb length, hind limb length, face length, ear length, ear width, hip width and tail length were taken. The local government areas significantly (P<0.05, 0.001) affected body length, fore limb length, ear length, ear width, hip width and live weight. Age and sex significantly (P<0.01) affected all the body measurements. The mean live weight by age groups are 6.61 + 0.31kg, 13.10 + 0.60kg and 20.18 + 0.95kg for ages 1,2 and 3 respectively. The coat colour varied from black, brown, grey to white in WAD goats. Some colours were in patches, some uniform while others were spotted


Agricultura ◽  
2016 ◽  
Vol 13 (1-2) ◽  
pp. 71-77 ◽  
Author(s):  
Peter-Damian Chukwunomso Jiwuba ◽  
Francis Okechukwu Ahamefule ◽  
Okechukwu Samuel Okechukwu ◽  
Kingsley Ikwunze

Abstract A 90-day study was carried out with 36 West African Dwarf goats to determine the effect of Moringa oleifera leaf meal (MOLM) on feed intake, body weight changes and haematology of WAD does. Four diets were formulated such that diets T1, T2, T3 and T4 contained MOLM at 0%, 5%, 10% and 15%, respectively. The diets were offered to the goats, which were randomly divided into four groups of nine goats each in a completely randomized design. Average daily feed intake (ADFI), average daily weight gain (ADWG), feed conversion ratio (FCR) and heamatology of the animals were determined and statistically analyzed. Results showed that ADFI, ADWG differed significantly (P<0.05) with T4 goats having better values. FCR was however best for does fed T4 diet. PCV, RBC, MCV and WBC differed (P<0.05) significantly among the treatments. Packed cell volume (29.50-32.75%) was improved (p<0.05) by MOLM supplementation at 15% inclusion level. White blood cell counts for goats in treatment groups were significantly (p<0.05) higher and better than the control. Incorporation of 15% MOLM in diets of WAD does enhanced their performance and heamatological profile. Moringa oleifera leaf meal supplementation level at 15% was recommended for optimum West African Dwarf goat production.


2021 ◽  
Vol 39 (2) ◽  
pp. 35-40
Author(s):  
E. N. Nwachukwu ◽  
G. U. Okoji.

This study was conducted to evaluate the effect of crossbreeding on body weight and morphometric traits of crossbred buck kids produced from a mating of Red Sokoto(RS) and West African Dwarf(WAD) goats in a humid tropical environment. Results showed that the main crossbred (RS x WAD) buck kids had significantly higher body weight at 20 weeks (8.98 ± 0.43kg) than the reciprocal (WAD X RS) individuals (8.22± 0.12kg) . The Red Sokoto (RS X RS) buck kids maintained overall superiority for body weight (10.48  ±0.49kg) and other morphometric traits namely; body length (72.62 ± 3.18cm), height-at-withers (54.62 ± 3.10cm) and heart girth (63.20 ± 2.41cm)than other genetic groups. Direct and percentage heterosis for body weight and the morphometric traits were positive for the RS x WAD buck kids except for body length which was negative. The reciprocal WAD x RS buck kids had negative values for all measured parameters indicating that the WAD sired buck kids showed no improvement for these body traits following crossbreeding. It was therefore concluded that rapid improvement in growth traits of WAD goats could be achieved by main crossbreeding involving mating of RS bucks with WAD does.


1986 ◽  
Vol 34 (3) ◽  
pp. 413-420
Author(s):  
G. Montsma

A summary is given of work on flocks of West African Dwarf goats at Wageningen, the University of Ife (Nigeria) and a village in Nigeria. It was concluded that these goats are suitable for meat production under low and high levels of feeding and management. Under intensive management, daily gain averaged 80 g (0.3-0.4% of mature body weight), and the number of weaned kids produced per [female] per yr 2.56. Goats fed only roughage gained 43 g per day. (Abstract retrieved from CAB Abstracts by CABI’s permission)


2021 ◽  
Vol 21 ◽  
pp. 25-28
Author(s):  
I. K. Odubote

Data on coat colour pigmentation and incidence of wattle were combined with production records of 1407 West African dwarf goats to study their influence on litter traits and body weight. There was no significant (P>0.05) difference among coat colours for litter size at birth and at weaning and birth weight. Basic white coloured goats were significantly (P <0.05) heavier at weaning and one year of age than the basic brown and black goats. The trend was that the weight decreased with increased pigmentation. Presence or absence of wattle did not exert any influence on the traits studied except yearling body weight Bilaterally wattled goats were lighter (P<0.01) than unilaterally wattled and non wattled goats.


2006 ◽  
Vol 46 (1) ◽  
pp. 87-95 ◽  
Author(s):  
Safiriyu Idowu Ola ◽  
Waliu Ajani Sanni ◽  
Gabriel Egbunike

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