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Articles by W.A. Hassan
Total Records ( 3 ) for W.A. Hassan
  A. Abubakar , H.M. Tukur , A.A. Sekoni and W.A. Hassan
  A total of 120 birds were divided into 5 groups of twenty four birds each. Each group was regarded as treatment. The treatment was subdivided into 3 groups of 8 birds each as replicates. Treatment 1 served as control diet with no rice bran and yeast supplementation, diet 2 and 3 contained 30 and 35% rice bran without yeast supplementation, respectively. Diets 4 and 5 were the same as diets 1 and 2 except that 2 g kg-1 of yeast was added to each. Between 45th and 50th week of age of the birds egg quality trial was conducted to assess haugh unit, shell thickness and yolk index. Results of feed intake, hen day egg production, feed conversion ratio and mortality were not significantly (p<0.05) influenced by dietary treatments. Haugh unit, yolk index and average weight of egg did not vary significantly (p<0.05) between treatments, however, shell weight and shell thickness were significantly affected by the treatments. Total cost of production was higher (p<0.05) for the control group compared to treatments 2, 3 and 5. Revenue generated from sale of eggs was higher for birds on treatment 4 compared to those on treatments 1 and 5 (p<0.05). Net farm income was higher for treatments 2, 3 and 4 compared to the control. It could be concluded from the results of this study that performance of birds was not affected by the levels of rice bran with and without yeast supplementation. However, shell thickness, shell weight and net farm income were significantly affected by the treatments.
  B.A. Shinkafi , J.K. Ipinjolu and W.A. Hassan
  The aim of this study was to gain knowledge on the gonad morphology and to determine the stages of gonad maturation in Auchenoglanis occidentalis (Cuvier and Valenciennes), based on macroscopic and histological procedures. A total of 800 samples, of which 398 were females, 399 males and 3 with unidentified sex were examined between November 2005 and December 2008. The samples ranged in total length from 6.60 to 33.00 cm with a mean of 19.51±4.50SD and from 2.26 to 462.90 g total weight with a mean of 100.05±70.09 SD. In females, mean ovary weight was 2.74±0.23 SE, mean left ovary length 3.70±0.08 SE, mean left ovary width 0.59±0.03 SE, mean right ovary length 3.65±0.08 SE and mean right ovary width 0.57±0.02 SE. In males, mean testis weight was 0.17±0.03 SE, mean left testis length 2.75±0.06 SE, mean left testis width 0.20±0.01 SE, mean right testis length 2.74±0.06 SE and mean testis width 0.19±0.01SE. This shows that in both sexes, the left gonads were slightly larger than the right ones. Six stages of gonad maturation were established for the females and males namely, immature (I), maturing (II), mature (III), ripe and running (IV), spent (V) and resting (VI). Based on macroscopy, eggs of various sizes and colours were found in each ovary, while histologically, various stages of oocytes and spermatocytes developed in each ovary and testis, respectively, indicating multiple spawning in both sexes. Spawning of the species occurs during the peak of rainy season in River Rima, which is between July and September.
  E.A. Ogunsan , G.I. Dogo , B.L. Aliero , W.A. Hassan , F.M. Tambuwal , N.I. Ogo and J. Jatau
  An experiment was conducted to determine the effect of including Zornia glochidiata (ZG) in the diet of rabbit at 0 (control), 10, 20 and 30%. The results showed that increasing the level of supplementation of ZG beyond 10% decreased feed intake and subsequently live weight gain. Dry matter digestibility also followed a similar trend. Least cost of feed per kilogram live weight gain occurred at the 10% inclusion level of ZG. Although blood parameters differed significantly between treatments, they were mostly within acceptable physiological limits, suggesting no adverse effects in feeding ZG to the animals.
 
 
 
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