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Articles by R.A. Halim
Total Records ( 2 ) for R.A. Halim
  K.T. Khaing , T.C. Loh , S. Ghizan , M.F. Jahromi , R.A. Halim and A.A. Samsudin
  The effects of different inclusion level of whole corn plant silage to Napier grass were observed in determining rumen fermentation and microbial population in goats. Fifteen male Boer cross goats around six months old of approximately 18.54±1.83 kg of b.wt., were used as experimental animals. The goats were assigned into five groups with three goats per treatment group. The five treatment groups consisted of different proportions of Napier Grass (G) and whole corn plant silage (CS)-G/CS, (T1) 100/0, (T2) 75/25, (T3) 50/50, (T4) 25/75 and (T5) 0/100, respectively. The mean concentrations of rumen NH3-N (mg dL–1) were not significant differences among the treatments, although T4 and T5 were slightly increased compared to other treatments. The total VFA production in the rumen fluid of the goat was not significantly different among the treatments, however; highest molar proportion of propionic acid and lowest proportion of acetic acid was observed in goat fed with T5 diets. Although the total bacteria population of rumen content was not significantly different among the dietary treatments, the population of R. albus, R. flavefaciens and F. succinogen showed significantly (p<0.05) among the treatments. The lowest population of methanogen and protozoa were detected in the rumen of goats fed T5 diet compared with other treatments. Thus, the animals fed with T5 diet showed the highest proportion of propionic acid and the lowest number of methanogen and protozoa population in the rumen.
  H. Siti Aishah , A.R. Saberi , R.A. Halim and A.R. Zaharah
  To investigate the effects of osmotic stress on forage sorghum (Sorghum bicolor L. Moench) varieties at critical stage of seed germination, i.e., at which salinization is initiated. A study was conducted at the Seed Technology Laboratory at University of Putra Malaysia (UPM- lab.) from October to November 2007. Two forage sorghum varieties (Speedfeed and KFS4) were evaluated in the salinity levels of 0, 5, 10, 15 dS m-1. The experimental design was Completely Random Design (CRD), which was based on factorial with 3 replications. In the experiment, seeds were germinated in covered, sterilized, disposable Petri dishes. Three parameters, namely germination percentage, germination rate, germination index and coefficient velocity of germination were estimated. The results of this study showed that different levels of salinity had significantly affected the germination percentage, germination rate germination index. In addition, a significant difference (1%) was also found in the germination percentage between the two varieties. Meanwhile, the mean comparison of the treatments showed that the germination percentage in distilled water (S1) was the highest (92.5%) and salinity dS m-1 (S4) had the lowest germination percentage. The maximum germination rate (35.58) and germination index (391.67) were retrieved from EC 0 and with the increasing salinity, these parameters were decreased. The evaluation of the two varieties showed that KFS4 (V1) had a higher germination percentage (82.91%) than the speed feed (72.5%). Consequently, the seed germination of KFS4 was better than the speed feed (in salty water and non-stress conditions). In other words, salt stress had been found to delay germination of both varieties.
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