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Salih A.,Afar Pastoral and Agro Pastoral Research Institute | Sreewongchai T.,Kasetsart University | Sripichitt P.,Kasetsart University | Parinthawong N.,King Mongkuts University of Technology Thonburi
Kasetsart Journal - Natural Science | Year: 2013

An experiment was conducted to identify rice varieties resistant to blast disease. Samples of 311 genetically diversified varieties/accessions comprised of landrace (263), improved (43) and wild (5) rice varieties/accessions were provided by the National Rice Gene Bank of Thailand. The screening for blast at the seedling stage was done using 29 diversified blast isolates. The blast isolates were collected from seven provinces (Phitsanulok, Ubon Ratchathani, Khon Kean, Chiang Rai, Nong Khai, Chaiyaphum and Udon Thani) of Thailand. The results indicated a total of 35 varieties/accessions (25 landrace, 9 improved and 1 wild) were resistant to all tested blast isolates. The 25 resistant landrace varieties were collections from Northern (10), Northeastern (9) and Southern (6) Thailand. Moreover four of the resistant landrace varieties (GS23107, GS19769, GS20874 and GS23774) were highly resistant with no symptom of the disease. From this study, it can be suggested that the resistant landraces from the Southern, Northern and Northeastern regions could be used as sources of resistant varieties in designing future breeding programs aimed at developing disease-resistant genotypes. Source

Endris M.,Afar Pastoral and Agro Pastoral Research Institute | Endris M.,Kasetsart University | Tumwasorn S.,Kasetsart University | Sopannarath P.,Kasetsart University | Prasanpanich S.,Kasetsart University
Kasetsart Journal - Natural Science | Year: 2013

This study was designed to examine the existence of a genotype × region interaction on milk production traits in Holstein crossbred dairy cows in Thailand. The data set for this study was provided by Department of Livestock Development of Thailand. The data were divided into five regions (Central, East, North, Northeast and West). The factors having genotype × region interaction on milk production traits were region, year-season of calving, breed group and breed group × region interaction. The investigated traits were actual total milk yield (ATMY), 305 d milk yield (MY305) and adjusted 305 d milk yield (AJ305), respectively. The breed group of cow had a significant (P < 0.05) effect on MY305 and a highly significant (P < 0.01) effect on ATMY and AJ305 while the effect of year-season of calving and region had very highly significant (P < 0.001) effects for all the studied traits. Breed group × region had a highly significant interaction (P < 0.01) for the milk production traits. The estimated heritability for the milk production traits ranged between 0.17 to 0.24 for the Central region and 0.29 to 0.57 for the Eastern region. It was suggested that the performance of breed group of cows from different regions should differ significantly or there was a genotype × region interaction in this particular study. Source

Ali A.S.,Afar Pastoral and Agro Pastoral Research Institute | Tudsri S.,Kasetsart University | Rungmekarat S.,Kasetsart University | Kaewtrakulpong K.,Kasetsart University
Kasetsart Journal - Natural Science | Year: 2013

The performance of Prosopis juliflora and Leucaena leucocephala was investigated at plant spacings of 1 × 0.5, 1 × 1, 1 × 1.5, 1 × 2 and 1 × 2.5 m corresponding to a tree density of 20,000, 10,000, 6,666, 5,000 and 4,000 ha-1, respectively, to identify the most suitable plant spacing for the optimum biomass harvest per unit area. The overall performance of L. leucocephala was superior to P. juliflora under most parameters measured, except for the calorific value. The performance of both species in terms of the plant height, stem diameter and number of trunks was affected by the population density at age 6 mths and there were significant increases at wider spacings (1 × 2 and 1 × 2.5 m) when the age advanced to 12 mth. There were significant differences in the biomass production per tree and better total above ground biomass results were obtained with plantings at wider spacings at both 6 and 12 mth of age. However, the total above ground biomass yield per hectare of both species increased markedly with increasing plant density at both 6 and 12 mth of age and this revealed that both species can be grown at closer spacing (1 × 0.5 m). Source

Yasin M.,Afar Pastoral and Agro Pastoral Research Institute | Animut G.,Haramaya University
Tropical Animal Health and Production | Year: 2014

The experiment was conducted to determine the supplementary feeding value of ground Prosopis juliflora pod (Pjp) and cottonseed meal (CSM) and their mixtures on feed intake, body weight gain and carcass parameters of Afar sheep fed a basal diet of pasture hay. Twenty-five yearling fat-tailed Afar rams with mean initial live weight 17.24 ± 1.76 kg (mean ± SD) were used in a randomized complete block design. Animals were blocked on their initial body weight. The experiment was conducted for 12 weeks and carcass evaluation followed. Treatments were hay alone ad libitum (T 1) or with 300 g CSM (T 2), 300 g Pjp (T 5), 2:1 ratio (T 3) and 1:2 ratio of CSM: Pjp (T 4). The CP contents of the hay, CSM and Pjp were 10.5, 44.5 and 16.7 %, respectively. Hay DM intake was higher (P < 0.05) for non-supplemented and total DM intake was lower in non-supplemented. Average daily weight gain (ADG) was lower (P < 0.05) for T 1 compared to all supplemented treatments except T 5. Hot carcass weight and rib-eye muscle area also followed the same trend like that of ADG. Compared with feeding hay alone, supplementing with CSM or a mixture of CSM and Pjp appeared to be a better feeding strategy, biologically, for yearling Afar rams. © 2014 Springer Science+Business Media Dordrecht. Source

Ali A.S.,Afar Pastoral and Agro Pastoral Research Institute | Tudsri S.,Kasetsart University | Rungmekarat S.,Kasetsart University | Kaewtrakulpong K.,Kasetsart University
Kasetsart Journal - Natural Science | Year: 2012

Twenty Afar male sheep with initial mean body weight ± SD of 17.87 ± 1.19 kg were used to evaluate the effect of replacing commercial feed with Prosopis juliflora pods and leaves on growth performance, carcass and meat quality characteristics. Animals were equally divided into four dietary treatment groups for 120 d (Rhode grass hay (RGH), RGH + 300 g ground P. juliflora pods (PJP), RGH + 150 g each ground P. juliflora pods and leaves mix (PJPLM) and RGH + 300 g commercial concentrate mix (CCM) per head per day). Total dry matter and crude protein intakes increased (P < 0.05) in treatments supplemented with ground PJP and CCM. The average weight gain and meat quality parameters obtained by supplementing with 300 g ground PJP were significantly higher than the RGH and PJPLM treatment groups, but were comparable with that of CCM. The present study demonstrated the potential of using PJP for Afar lambs without adverse effects on growth and carcass characteristics. However, the intake of PJP reduced when mixed with leaves and this indicates the leaves are unpalatable. Source

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