The objective of this research was to evaluate the impact of the VIUSID Vet(powder and solution)nutritional supplement on the productive performance of growing-finishing pigs.Two experiments were conducted,each using ...The objective of this research was to evaluate the impact of the VIUSID Vet(powder and solution)nutritional supplement on the productive performance of growing-finishing pigs.Two experiments were conducted,each using 210 pigs at an average age of 40 d—70 per treatment—which were distributed into 15 pens(five per group).The experiments lasted 170 d.The treatments consisted in:Experiment 1,Group I control group;Group II received from the start 1.5 g of VIUSID Vet powder per kilogram of feed daily for 90 d;Group III same as the former,but instead given 2.0 g.Experiment 2,Group I control;Group II received from the start 1.5 g of VIUSID Vet powder per kilogram of feed daily for 90 d;Group III same as the former,but instead given 1.5 mL of VIUSID Vet solution per kilogram of feed.VIUSID Vet(powder or solution)significantly improved weight gain and feed conversion as well as reduced deaths when given doses of 2.0 g and 1.5 g or 1.5 mL per kilogram of feed during the first 90 d of the growing-finishing phase,giving rise to financial benefits.展开更多
Adapting and restricting salinity intrusion in Vietnam is being concerned by more researchers as well as the local authorities.This study aimed to use remote sensing and geographic information system(GIS)technology fo...Adapting and restricting salinity intrusion in Vietnam is being concerned by more researchers as well as the local authorities.This study aimed to use remote sensing and geographic information system(GIS)technology for mapping paddy areas and salinity intrusion in spring crop 2015 at Phu Vang district,thereby helping precondition for assessing and monitoring changes in salinity intrusion to serve for salinization management in study area.Based on acquisition imagery,land use map and normalized difference vegetation index(NDVI)were extracted to interpolate the salinity of area by combining the laboratory analysis of collected soil samples from the field.The result showed that there were 1,067.107 ha of salinity land area accounting for 10.04%of the rice land in Phu Vang district,where the moderate salinity level was 180.67 ha and low salinity level was 866.431 ha.The salinity rice land was mainly distributed in Vinh Ha commune,Phu An commune and Phu Dien commune.The salinity in this area ranged from 0.4 mS/cm to 1.41 mS/cm and the moderate salinity was approximately 0.9 mS/cm.Besides,this research also showed that the salinity(electrical conductivity)and the development of vegetation(NDVI)were closely related with each other up to 61.4%.展开更多
The study evaluated the synergy between the indicators of rainfall,vegetation cover,land productivity in crop production,livestock production and the relationship between the value of aggregate agricultural production...The study evaluated the synergy between the indicators of rainfall,vegetation cover,land productivity in crop production,livestock production and the relationship between the value of aggregate agricultural production and the gross domestic product of municipalities in the semi-arid region of the State of Ceará,Brazil.The data sources are:CearáMeteorology and Water Resources Foundation(FUNCEME)and Brazilian Institute of Geography and Statistics(IBGE)for the years 1996,2006 and 2017.The research used the methodology of factor analysis(FA),with decomposition into principal components,to construct the index of agricultural production preservation(IAPP).The results showed that 1996 had the best rainfall levels and the highest IAPP values compared to the other years studied.Year of 2017 was the last one of a draught period that extended in Cearáfrom 2012 to 2017.In that year the lowest values for IAPP were observed.The main conclusion is:there was the expected interaction between rainfall and agricultural preservation indicators applied in the semi-arid region of the state of Cearáin the years 1996,2006 and 2017.展开更多
Feed ingredients can change physically or chemically when exposed to moisture,heat or pressure.These changes impact how well they flow through a bin and disperse throughout the feed.Microencapsulation is a relatively ...Feed ingredients can change physically or chemically when exposed to moisture,heat or pressure.These changes impact how well they flow through a bin and disperse throughout the feed.Microencapsulation is a relatively new technique used to reduce reactivity and improve storage and handling characteristics(HC)of nutrients.The authors hypothesize that lipid matrix microencapsulation of free vitamin and mineral(VM)premixes significantly improve their HC making them more desirable products for feed mills.Triplicate samples of free,standard and lipid microencapsulated VM premixes were evaluated for the following HC:particle size(dgw),particle size variability(Sgw),flowability(measured by angle of repose(AOR)and minimum orifice diameter(MOD)),lumping,compressibility,bulk and tapped density,solubility and hygroscopic percent change in weight(day 0-1,0-3,0-5,5-9,0-9).Results were analyzed in a 3×2 factorial(JMP Pro 14)of form(free,standard,microencapsulated)by type(vitamin,mineral).Microencapsulated VM had the highest dgw(611.0mm and 722.7mm,respectively,p=0.002);free and microencapsulated vitamins had the smallest Sgw(1.67 and 1.49,respectively,p<0.001).Microencapsulated premixes had significantly lower AOR(p<0.001)and MOD values(p<0.001)than other premixes,indicating improved flowability.From days 0-3 and 0-5,microencapsulated premixes absorbed approximately half as much moisture(1.62%and 2.24%,respectively)than the free(3.48%and 5.04%,respectively)or standard(3.74%and 5.26%,respectively)premixes(p=0.001).The benefits gained from lipid matrix microencapsulation technology not only improve the HC of animal feed additives,but also improve the stability of VM premixes.展开更多
Threshing is one of the most critical parts of post-harvest operation which affects the quality and quantity of maize production.It could be done manually or mechanically.However,the objective of this study was to eva...Threshing is one of the most critical parts of post-harvest operation which affects the quality and quantity of maize production.It could be done manually or mechanically.However,the objective of this study was to evaluate the performance of a maize cob thresher fabricated at National Centre for Agricultural Mechanization(NCAM)Ilorin at three different moisture contents and analyze the result using ANOVA and bar chart as statistical tools.The average values of parameters evaluated at three different stages of moisture content(15.81%,16.79%and 17.10%)of maize cob are as follow:threshing capacity 754.20,737.38 and 720.23 kg/h;threshing efficiency 99.73%,99.63%and 99.16%;cleaning efficiency 89.82%,89.45%and 88.34%;broken grains ratio 0.84%,0.79%and 0.70%;time taken 43,44 and 45 s,respectively.The total amount of maize cob fed into the machine was 9 kg in three replicates for each of the moisture content and the average values of threshed maize of 8.08,8.05 and 7.95 kg was recovered,respectively.There was significant difference in threshing efficiency,amount of chaffs in the threshed maize and the percentage broken ration.At 17.10%moisture content,the percentage broken grain ratio was minimal.At high moisture content,more force,energy and time is required to thresh certain amount of maize cob.Also,at minimal moisture content less force and energy is required for maximum output.Therefore,considering the previous work on performance evaluation of maize cob thresher,this machine performed satisfactorily and is far better than manual method.The machine is effective,efficient,affordable and available for the small and medium scale farmers in Nigeria.展开更多
文摘The objective of this research was to evaluate the impact of the VIUSID Vet(powder and solution)nutritional supplement on the productive performance of growing-finishing pigs.Two experiments were conducted,each using 210 pigs at an average age of 40 d—70 per treatment—which were distributed into 15 pens(five per group).The experiments lasted 170 d.The treatments consisted in:Experiment 1,Group I control group;Group II received from the start 1.5 g of VIUSID Vet powder per kilogram of feed daily for 90 d;Group III same as the former,but instead given 2.0 g.Experiment 2,Group I control;Group II received from the start 1.5 g of VIUSID Vet powder per kilogram of feed daily for 90 d;Group III same as the former,but instead given 1.5 mL of VIUSID Vet solution per kilogram of feed.VIUSID Vet(powder or solution)significantly improved weight gain and feed conversion as well as reduced deaths when given doses of 2.0 g and 1.5 g or 1.5 mL per kilogram of feed during the first 90 d of the growing-finishing phase,giving rise to financial benefits.
文摘Adapting and restricting salinity intrusion in Vietnam is being concerned by more researchers as well as the local authorities.This study aimed to use remote sensing and geographic information system(GIS)technology for mapping paddy areas and salinity intrusion in spring crop 2015 at Phu Vang district,thereby helping precondition for assessing and monitoring changes in salinity intrusion to serve for salinization management in study area.Based on acquisition imagery,land use map and normalized difference vegetation index(NDVI)were extracted to interpolate the salinity of area by combining the laboratory analysis of collected soil samples from the field.The result showed that there were 1,067.107 ha of salinity land area accounting for 10.04%of the rice land in Phu Vang district,where the moderate salinity level was 180.67 ha and low salinity level was 866.431 ha.The salinity rice land was mainly distributed in Vinh Ha commune,Phu An commune and Phu Dien commune.The salinity in this area ranged from 0.4 mS/cm to 1.41 mS/cm and the moderate salinity was approximately 0.9 mS/cm.Besides,this research also showed that the salinity(electrical conductivity)and the development of vegetation(NDVI)were closely related with each other up to 61.4%.
文摘The study evaluated the synergy between the indicators of rainfall,vegetation cover,land productivity in crop production,livestock production and the relationship between the value of aggregate agricultural production and the gross domestic product of municipalities in the semi-arid region of the State of Ceará,Brazil.The data sources are:CearáMeteorology and Water Resources Foundation(FUNCEME)and Brazilian Institute of Geography and Statistics(IBGE)for the years 1996,2006 and 2017.The research used the methodology of factor analysis(FA),with decomposition into principal components,to construct the index of agricultural production preservation(IAPP).The results showed that 1996 had the best rainfall levels and the highest IAPP values compared to the other years studied.Year of 2017 was the last one of a draught period that extended in Cearáfrom 2012 to 2017.In that year the lowest values for IAPP were observed.The main conclusion is:there was the expected interaction between rainfall and agricultural preservation indicators applied in the semi-arid region of the state of Cearáin the years 1996,2006 and 2017.
文摘Feed ingredients can change physically or chemically when exposed to moisture,heat or pressure.These changes impact how well they flow through a bin and disperse throughout the feed.Microencapsulation is a relatively new technique used to reduce reactivity and improve storage and handling characteristics(HC)of nutrients.The authors hypothesize that lipid matrix microencapsulation of free vitamin and mineral(VM)premixes significantly improve their HC making them more desirable products for feed mills.Triplicate samples of free,standard and lipid microencapsulated VM premixes were evaluated for the following HC:particle size(dgw),particle size variability(Sgw),flowability(measured by angle of repose(AOR)and minimum orifice diameter(MOD)),lumping,compressibility,bulk and tapped density,solubility and hygroscopic percent change in weight(day 0-1,0-3,0-5,5-9,0-9).Results were analyzed in a 3×2 factorial(JMP Pro 14)of form(free,standard,microencapsulated)by type(vitamin,mineral).Microencapsulated VM had the highest dgw(611.0mm and 722.7mm,respectively,p=0.002);free and microencapsulated vitamins had the smallest Sgw(1.67 and 1.49,respectively,p<0.001).Microencapsulated premixes had significantly lower AOR(p<0.001)and MOD values(p<0.001)than other premixes,indicating improved flowability.From days 0-3 and 0-5,microencapsulated premixes absorbed approximately half as much moisture(1.62%and 2.24%,respectively)than the free(3.48%and 5.04%,respectively)or standard(3.74%and 5.26%,respectively)premixes(p=0.001).The benefits gained from lipid matrix microencapsulation technology not only improve the HC of animal feed additives,but also improve the stability of VM premixes.
文摘Threshing is one of the most critical parts of post-harvest operation which affects the quality and quantity of maize production.It could be done manually or mechanically.However,the objective of this study was to evaluate the performance of a maize cob thresher fabricated at National Centre for Agricultural Mechanization(NCAM)Ilorin at three different moisture contents and analyze the result using ANOVA and bar chart as statistical tools.The average values of parameters evaluated at three different stages of moisture content(15.81%,16.79%and 17.10%)of maize cob are as follow:threshing capacity 754.20,737.38 and 720.23 kg/h;threshing efficiency 99.73%,99.63%and 99.16%;cleaning efficiency 89.82%,89.45%and 88.34%;broken grains ratio 0.84%,0.79%and 0.70%;time taken 43,44 and 45 s,respectively.The total amount of maize cob fed into the machine was 9 kg in three replicates for each of the moisture content and the average values of threshed maize of 8.08,8.05 and 7.95 kg was recovered,respectively.There was significant difference in threshing efficiency,amount of chaffs in the threshed maize and the percentage broken ration.At 17.10%moisture content,the percentage broken grain ratio was minimal.At high moisture content,more force,energy and time is required to thresh certain amount of maize cob.Also,at minimal moisture content less force and energy is required for maximum output.Therefore,considering the previous work on performance evaluation of maize cob thresher,this machine performed satisfactorily and is far better than manual method.The machine is effective,efficient,affordable and available for the small and medium scale farmers in Nigeria.
