Open Access Original Research Article

Studies on Phytoplankton Composition of River Shinga Gombe State, Nigeria

H. S. Kiman, A. A. Kawu, R. A. Ummu

Asian Journal of Research in Zoology, Page 1-7
DOI: 10.9734/ajriz/2020/v3i230084

Studies on the phytoplankton composition of River Shinga, Yamaltu Deba Local Government Area, Gombe State, Nigeria was carried out from June-August, 2019. Samples were collected fortnightly for the period of three month. The objectives were to determine the physico-chemical parameters, assess the phytoplankton abundance and the relationship between physico-chemical parameters and phytoplankton abundance of the river. Phytoplankton was determined following the method described by Lee and Cundy and Anene. Physicochemical parameters were determined following the method described by APHA. The mean values of the physico-chemical parameters recorded include Air temperature (29.6±1.04), water temperature (26.8±0.86), Water pH (8.09±0.33), Turbidity and Transparency (10.17±0.66), water velocity (0.29±0.04) Dissolved oxygen (3.3±0.24) and electrical Conductivity (84.6±4.12). A total of 717 individuals and 21 species of phytoplankton’s were recorded. The dominant phytoplankton was Bacillariophyceae (46.03%), followed by order Chlorophyceae (30.82%), Cyanophyceae (15.48%) and Euglenophyceae (7.67%). The total number of phytoplanktons varies with month of sampling; a higher number was experienced during the rainy seasons. Pearson correlation co-efficient shows physico-chemical parameters are responsible for sharpening the structure of phytoplankton abundance. ANOVA and Simpson’s index (D) method was used to analyze the data.

Open Access Original Research Article

Effect of Storage Methods on Egg Characteristics and Embryonic Development of Guinea Fowl (Numida meleagris) Eggs

Patrick Atta Poku . Jnr, Clement Gyeabour Kyere, Serekye Yaw Annor, Keziah Kyerewaa Boateng

Asian Journal of Research in Zoology, Page 8-13
DOI: 10.9734/ajriz/2020/v3i230085

Aims: This study was conducted to investigate the influence of different egg storage methods on egg characteristics and embryonic development of Guinea fowl (Numedia meleagris) eggs.

Study Design: A Complete randomized design (CRD) was used for the experiment.

Place and Duration of Study: The study was conducted at the Poultry Unit of the Department of Animal Science Education, University of Education, Winneba, Mampong campus.

Methodology: A total of one hundred and eighty (180) hatching eggs were used for the experiment. The various experimental coops were labelled in accordance with their experimental treatment as paper crates (T1), vegetable oil (T2) and saw-dust (T3). Each treatment (T) had three replications (20 eggs per replicate), which gave a total of nine replications. Data collected were analyzed using General Linear Model (GLM) procedure of SAS.

Results: Results showed that egg storage methods had significant (P < .05) effect on egg weight after storage, egg weight loss and embryonic development. The highest (P < .05) egg weight after storage was observed among eggs stored with vegetable oil and lower among eggs stored on paper crates. Eggs treated with vegetable oil produced very excellent (P < .05) results with lower weight loss while eggs stored with paper crates recorded the highest weight loss. Embryonic development was significantly (P< .05) higher among eggs treated with vegetable oil followed      by saw-dust with paper crates being the least. Albumen weight and yolk weight was significantly (P < .05) higher among eggs treated with vegetable oil. Similar (P < .05) albumen weight was observed for both saw-dust and paper crates. The least yolk weight was observed among eggs stored on paper crates.

Conclusion: In conclusion, coating table eggs with vegetable oil could be effectively used to preserve egg quality and improve embryonic development.

Open Access Original Research Article

Length-weight Relationship and Condition Factor of Auchenoglanis biscutatus in Kiri Reservoir, Adamawa State, Nigeria

H. S. Kiman, A. Ja'afaru

Asian Journal of Research in Zoology, Page 23-29
DOI: 10.9734/ajriz/2020/v3i230088

Length-weight relationship and condition factor of Auchenoglanis biscutatus obtained from Kiri Reservoir Adamawa State, Nigeria from July to December 2014 were studied. The objective of this study was to determine the state of physiological wellbeing of the fish in the reservoir. A total of 60 Auchenoglanis biscutatus were collected from fishermen catch and transported to the laboratory for analysis. Identification of fish was done using the Babatunde and Raji method. Length-Weight relationship and condition factor were calculated using the Froeze method. The results of the length - weight analyses showed that the entire fish exhibited a negative allometric growth pattern with regression exponent b values less than 3. The analyses showed that the condition factor of Auchenoglanis biscutatus were greater than 1 and implied that they were in good physiological condition.

Open Access Original Research Article

Prediction Model of Chick Hatching Weight with Restricted Ridge Regression

Betül Dağoğlu Hark, Sema Alaşahan

Asian Journal of Research in Zoology, Page 30-37
DOI: 10.9734/ajriz/2020/v3i230089

In this study, it is aimed to obtain prediction model for chick hatching weight by using shell ground color, shape characteristics, shell characteristics, white + yellow weight and weight loss property values during hatching of quail hatching eggs. Multicollinearity is one of the most common problems in prediction models. It is defined as linear dependence between explanatory variables in linear regression analysis. In this case, the ordinary least squares (OLS) estimator is not a predictor with minimum variance between unbiased estimators. Accordingly, the parameter estimates are away from the real value. One proposed approximation approach to eliminate this problem is restricted ridge regression.

According to the findings obtained from 523 chick hatching eggs, elongation, egg shell weight, shell weight + embryo waste (g), absolute weight loss after transfer (g), relative weight loss after transfer (%) and absolute weight loss in 0-14 days (g) were determined as factors affecting chick hatching weight. In the linear modeling approach, which is used to determine these factors, multicollinearity problem is revealed. Therefore, in order to obtain a stable set of parameters, restricted ridge regression analysis was applied and estimations with lower standard errors than standard errors of the parameters obtained from the (least squares) LSQ approach were obtained.

Open Access Review Article

Monitoring Body Weight Gain of Goat Kids for Improving Productivity

Narayan G. Hegde, Avinash D. Deo

Asian Journal of Research in Zoology, Page 14-22
DOI: 10.9734/ajriz/2020/v3i230087

Goat husbandry has been supporting the livelihood of over 100 million families living in arid and semi-arid regions of Asia and Africa, but most of them have not been able to earn substantial income, due to poor goat husbandry practices. Key factors influencing goat productivity have been - better management of pregnant does, high weight of kids at birth and acceleration of weight gain during pre-weaning period, apart from general factors such as goat breed, efficient breeding service, health care and marketing. This paper has identified various factors contributing to poor status of goats owned by small goat keepers and suggestions to improve the weight of kids at birth and the growth rate during pre-weaning and post weaning periods, through supplementary feeding and regular monitoring of weight. A suitable extension tool in the form of a Growth Monitoring Chart for different breeds can be developed, which goat keepers can readily use for taking suitable corrective measures. Goat keepers should also be advised on culling weak animals at an early age and replacing them with healthy animals to improve the production.