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Articles by Z.S. Yahaya
Total Records ( 3 ) for Z.S. Yahaya
  H. Kioumarsi , K. Jafari Khorshidi , M. Zahedifar , A.R. Seidavi , Z.S. Yahaya , W.A. Rahman and S.Z. Mirhosseini
  This study estimated the relationship between Urea Space (US) and carcass attributes in lambs to derive coefficients for these relationships and functional equations for components of carcass quality and quantity. Twenty-four male Taleshi lambs with an average age of 8 months were used. Lamb live weight was determined using the urea dilution method and two or three days before slaughter, the urea dilution procedure was again used to estimate the chemical composition of the carcass. Subsequently, plasma urea nitrogen was determined and the percentage of urea space to lamb live weight was calculated. After slaughter, the carcasses were butchered and the parts measured. The results showed that the average amount of urea injected was 20.09 cm2 and the Blood Urea Nitrogen (BUN) averaged 17.16 and 27.72 mg before and after injection respectively. The average percentage of US to lamb live weight was 18.78%. Correlation coefficients between live weight, empty body weight, hot carcass weight and the weight of different parts of the carcass were high and statistically significant (p < 0.01). The urea space was significantly related to the percentage of protein and ash in the region of the 9th, 10th and 11th ribs (p < 0.05). Using this rib area and US, the development of functional equations between live weight and empty body weight for different parts of the carcass showed that the urea dilution test is a useful tool for predicting the chemical composition of Taleshi lamb carcasses.
  H. Kioumarsi , Z.S. Yahaya , W.A. Rahman and P. Chandrawathani
  This research was conducted in order to investigate the effects of mineral feed blocks along with the use of medicated blocks on growth, control of gastro-intestinal nematode infection and subsequently commercial productivity of Boer goats. In Malaysia, the gastro-intestinal nematode is a common problem in grazing animals, particularly in sheep and goats. This parasitic infection can damage the intestinal epithelium and cause leakage into the gastrointestinal tract of ruminants. These parasites can also cause a high mortality rate and production loss. Molasses, urea and other components are used for producing molasses/urea feeds (blocks, pastes or licks). These preparations are a suitable way of preparing degradable proteins and fermentable energy to ruminant animals as they help to increase the protein supply to the ruminant animals. Furthermore, medicated feed-supplement blocks have been used in an effort to deliver anthelmintic medication. There has been a vast amount of research by scientists to control gastrointestinal nematode infections and to improve the nutrition in goats; however, to date, the data has been inconclusive. This research was carried out to examine a new strategy that can improve performance and productivity of raising Boer goats in Malaysia. The results revealed that using the block has been quite successful and commercially recommendable in this area.
  H. Kioumarsi , Z.S. Yahaya and A.W. Rahman
  Inadequate nutrition and the gastro-intestinal nematode are amongst the commonest problems associated with grazing goats. The aim of this study was to assess the effects on blood metabolites by introducing molasses/mineral feed blocks in addition to the use of medicated blocks, to the diet of grazing goats in Malaysia. Twenty-four male Boer goats with an average age of age average of 7-8 months were used. Goats were divided into four groups: (1) a control group; (2) an experimental group fed with a ratio of molasses/mineral feed blocks (UMB); (3) an experimental group fed with a ratio of medicated blocks (MUMB) and (4) an experimental group fed with a ratio of UMB+MUMB. At the end of the experiment, the blood was taken and analyzed to measure pathological and biochemical parameters. All the blood analysis was conducted at the Veterinary Research Institute (VRI), Ipoh, Malaysia. However, results shows that a combination of molasses/mineral feed blocks and medicated blocks has significant effects (p<0.05) on blood factors includes calcium, creatinine, urea nitrogen and Packed Cell Volume (PCV) and has no negative effects on body function. The results for PCV (%) shows that goats fed with the ratio contain UMB+MUMB have highest percentages which are 94.90±14.70 and 27.25±2.50, respectively. The goats fed with MUMB have highest amount of calcium in their blood which is 3.70±0.37. The highest amount of urea nitrogen is 5.48±2.15a which belongs to the goats fed with UMB. According to the results, it can be concluded that the molasses were uses in the ratios of the goats had positive effects on body function. Thus, the use of urea molasses mineral blocks and medicated urea molasses mineral blocks is recommended.
 
 
 
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