AMA, Agricultural Mechanization in Asia, Africa and Latin America
AMA, Agricultural Mechanization in Asia, Africa and Latin America (AMA) (issn: 00845841) is a peer reviewed journal first published online after indexing scopus in 1982. AMA is published by Farm Machinery Industrial Research Corp and Shin-Norinsha Co. AMA publishes every subjects of general engineering and agricultural engineering.
WOS Indexed (2026)
07 May 2026 (Vol - 57 , Issue- 05 )
31 May 2026 (Vol - 57 , Issue 05 )
Aim and Scope :
AMA, Agricultural Mechanization in Asia, Africa and Latin America
AMA, Agricultural Mechanization in Asia, Africa and Latin America (ISSN: 00845841) is a peer-reviewed journal. The journal covers Agricultural and Biological Sciences and all sort of engineering topic. the journal's scopes are in the following fields but not limited to:
Agricultural and Biological Sciences
Electrical Engineering and Telecommunication
Electronic Engineering
Computer Science & Engineering
Civil and architectural engineering
Mechanical and Materials Engineering
Transportation Engineering
Industrial Engineering
Industrial and Commercial Design
Information Engineering
Chemical Engineering
Food Engineering
Design and Development of a Hydraulic Feed Block making Machine for Yak, Mithun and other Cattle Family Farmers of Northeastern region of India
In India due to non-availability of crop residues during winter season at high altitude areas of north eastern region, animals like Yak (Bos grunniens) and Mithun (Bos frontalis) have to suffer scarcity of food. The scarcity of food results in decreasing of milk production, deterioration of body weight and low fertility. To maintain a good livestock production of Compressed Feed Block (CFB) is one of the main options that is available. Though feed block making machines are available in the market, but those machines are costly and difficult to transport in the hilly areas. Those machines are mainly run with electricity which is also creating a problem to run in the interior areas of the region. Therefore, the objective of this research is to design and developed an efficient and affordable feed block making machine useful for the Yak and Mithun farmers of the region. The machine mainly works on hydraulic principle that is used to produce the compressed feed blocks. The fabricated machine consists of a 10 – tonne capacity hydraulic jack, frame and a cylindrical mould. Four samples of feed blocks are produced with different ratios of raw materials under the pressure of 5, 6, 7 and 8 MPa, respectively. The raw materials that is used for producing the feed blocks during the research are rice straw, rice bran, molasses and mustard cake. With this machine a feed block of size 130 mm diameter and 5 mm wall thickness can be produced. Physical properties like shatter index is evaluated and out of which sample 4 has got a good shatter index with retention of 82.1% of its weight whereas the percentage retention of sample 1 is 71.3% i.e. the least among 4 samples.
Evaluation of tuberose (Polianthes tuberosa L.) genotypes for salinity tolerance
Given the versatility and economic significance of tuberose, especially for small and marginal farmers, it is essential to understand its response to abiotic stresses. Salt stress is a major factor that adversely impacts plant growth, yield and quality. Despite extensive research on other crops, the effects of salinity stress on tuberose remain largely underexplored. Present study aims to address this gap by evaluating the differential responses of tuberose genotypes to salinity stress. 18 tuberose genotypes were subjected to salinity stress at EC levels of 2, 4, 6 and 8 dS/m, along with control. The results demonstrated a significant reduction in all measured parameters with increasing salinity levels. Tuberose genotypes showed markedly varied responses to different levels of salinity stress. ‘Pearl Double’ exhibited the longest spike length even under highest salinity level (69.38 cm at 8 dS/m). Additionally, ‘Pearl Double’ showed minimum percentage reduction in leaf width, with reductions of 1.53%, 4.08% and 17.35% at salinity levels of 4 dS/m, 6 dS/m and 8 dS/m, respectively, indicating its superior tolerance to salinity. ‘Prajwal’ and ‘Bidhan Snigdha’ also displayed significant tolerance to higher salinity stress. Conversely, ‘Arka Shringar’ and ‘Mexican Single’ showed highest percentage reduction when exposed to salinity stress. Among studied genotypes, ‘Pearl Double’, ‘Bidhan Snigdha’ and ‘Prajwal’ emerged as promising genotypes, displaying notable tolerance and minimal percentage reduction under salt stress conditions. Conversely, ‘Arka Shringar’ and ‘Mexican Single’ were found to be susceptible genotypes to salinity stress.
Assessment of health status in crossbred cows upon systemic administration of micronutrients
Vitamin and mineral injections can increase cellular nutrition availability, which is essential for lowering transition period stress and improving dairy cow health and productivity. The purpose of this study was to assess the colostrum quality and the health of the calf after intramuscular injection of multi-mineral and multi-vitamins to peripartum cows throughout the months of winter. For every season, twenty-four pregnant crossbred Karan Fries cows were grouped into four groups, each with six cows. In the control group i.e. Group 1 was given only a basal diet and no extra treatments. Multivitamin injections were given to group 2, multimineral injections to group 3, and a combination of multivitamin and multimineral injections to group 4. Blood samples were taken one, three, seven, fifteen, and twenty days prior to parturition, as well as the same number of days following it. The group receiving multimineral injections had lower cortisol levels than the group receiving multivitamin injections, while the group receiving simply basel diet had the highest cortisol levels (P<0.05). IGF1 levels were lowest in the group given only basal diet, followed by multivitamin and multimineral injections, and highest in the group that received a combination of multivitamin and multimineral injections.
Assessment of serum biochemical markers among the different physiological stages in Jersey Crossbred cows
A comparative study on serum biochemical constituents was carried out at different physiological stages in females of Jersey crossbred cattle. A total of 72 healthy Jersey crossbred cattle (n=72), aged 3-6 years with a good body condition score (5-6 out of 10) were selected and they were divided into five groups, each group comprised of twelve (n=12) animals, Group 1: calves, Group 2: heifers, Group 3: pregnant lactating, Group 4: non-pregnant lactating, Group 5: pregnant dry and Group 6: non-pregnant dry Jersey crossbred cows. Blood samples were collected and analysed for biochemical profiles. Serum calcium and inorganic phosphorus were higher in calves followed by heifers. Cows in lactating groups had significantly lower calcium and higher phosphorus than those in dry groups. Cows in the pregnant group had significantly higher serum magnesium, potassium and chloride than those in pregnant lactating groups followed by cows in the pregnant dry group. However, serum sodium was higher in the pregnant dry group. Similarly, total protein, globulin and total cholesterol were higher in pregnant lactating group followed by comparable results observed in non-pregnant lactating and pregnant dry groups. Glucose was higher in female calves and blood urea nitrogen (BUN) and creatinine were higher in lactating groups. Therefore, variations in serum biochemical markers in Indian Jersey crossbred cows during different physiological stages were useful to frame the dietary and management strategies to enhance health, productivity and reproduction performances.
Effect of injectable nutrient administration on IgG levels of crossbred cattle
The effect of antioxidants on IgG levels in cattle blood can be significant, as IgG is a crucial component of the immune system responsible for providing passive immunity to the animal. Here's how antioxidants may impact IgG levels in cattle: Enhanced Immune Function: Antioxidants such as vitamin E, vitamin C, selenium, and zinc play a vital role in supporting immune function by protecting immune cells from oxidative damage. When antioxidant levels are optimal, the immune system can function more efficiently, including the production and maintenance of IgG levels. The purpose of the study was to determine how antioxidant injections affected the IgG levels in the plasma of crossbred cattle. There were four groups (T1, T2, T3, and T4), each with six crossbred animals. As the control group, group T1 was given only the minimum amount of food. Multimineral injections were given to the T2 group, multivitamin injections to the T3 group, and a combination of multivitamin and multimineral injections to the T4 group. They received injections on the 7, 15, 21, and 30 days prior to delivery. The T4 group exhibited the greatest rise in plasma IgG levels (p<0.05). The T2 group likewise demonstrated a significant rise (p<0.05). Although it wasn't very noticeable, there was an increase in T3-specific IgG levels.