scholarly journals ANALISIS FAKTOR-FAKTOR YANG MEMPENGARUHI EFISIENSI PRODUKSI BENIH IKAN PATIN (STUDI KASUS PANDAWA LIMA FISHERIES FARM BOGOR)

2019 ◽  
Vol 11 (1) ◽  
pp. 81-90
Author(s):  
Adam Purnama ◽  
Lilis Imamah Ichdayati ◽  
Rahmi Purnomowati
Keyword(s):  
Technical Efficiency ◽  
Seed Production ◽  
Farm Income ◽  
A Value ◽  
C Value

The objectives of this research are; (1) to determine the factors effecting seed production of catfish in the Pandawa Lima Fisheries Farm Bogor, (2) to determine the elasticity of seed production of catfish in the Pandawa Lima Fisheries Farm Bogor, and (3) to determine the level of technical efficiency on hatchery operations of catfish in Pandawa Lima Fisheries Farm Bogor. The R/C analysis was employed to analyze income of catfish seed production for 30 cycles of production. Results showed that farm income is positive with a value of Rp 851,343.75 per cycle. The R/C value was 1.12 indicated that catfish hatcheries in Pandawa Lima Fisheries Farm is considered advantageous to cultivate.

scholarly journals EFISIENSI PENGGUNAAN FAKTOR PRODUKSI DAN PENDAPATAN USAHATANI TUMPANGSARI STROBERI-BAWANG DAUN DI DESA SERANG KECAMATAN KARANGREJA KABUPATEN PURBALINGGA

2021 ◽  
Vol 14 (1) ◽  
pp. 57
Author(s):  
Savira Kusumadewi ◽  
Djeimy Kusnaman ◽  
Irene Kartika Eka Wijayanti
Keyword(s):  
Function Analysis ◽  
Economic Value ◽  
Simple Random Sampling ◽  
Production Factor ◽  
Farm Income ◽  
Land Area ◽  
Production Factors ◽  
A Value ◽  
C Value ◽  
Seed Area

Strawberry (Fragaria sp.)  is a type of fruit that has high economic value. An to increase the income of strawberry farmers is by intercropping with leek. To understand the efficiency of the farming the by using production input. This research aims to 1) analyze the effect of the use of production factors, 2) analyze the level of efficiency in the use of production factors, and 3) to analyze the profit level of intercropping strawberries-leek in Serang Village, Karangreja District, Purbalingga Regency. There are 35 samples obtained using simple random sampling. The analysis was performed using the Cobb Douglass production function analysis, the NPM / BKM ratio and farm income analysis. The results of this research were the use of production factors, seed; area; labor; and insecticides partially affected the production of intercropping strawberries, while the production factors of chicken-husk fertilizer; NPK-Phonska fertilizer; other fertilizers; and fungicides had no effect on the production of intercropping strawberries. The production factors for seeds; labor; and insecticides have an NPM-BKM ratio value greater than one where the use of these inputs is not efficient. Meanwhile, the production factor for land area has an NPM-BKM ratio value of less than one where the use of these inputs is not efficient. R / C for cash costs was 4.61 and R / C for total costs was 1.09. The R / C value for both cash costs and total costs has a value greater than one, so the strawberry and leek intercropping farming in Serang Village can be said to be profitable.

Technical Efficiency in Seed Potato Production Systems in Uganda

2018 ◽  
Vol 10 (3(J)) ◽  
pp. 122-140
Author(s):  
Ambrose Rwaheru Aheisibwe ◽  
Razack B. Lokina ◽  
Aloyce S. Hepelwa
Keyword(s):  
Technical Efficiency ◽  
Seed Potato ◽  
Arable Land ◽  
Stochastic Frontier ◽  
Potato Production ◽  
Maximum Likelihood Estimates ◽  
Farm Income ◽  
Seed Potato Production ◽  
Extension Services ◽  
Income Source

This study established the level of technical efficiency and its determinants among the informal and formal seed potato producers in the southwestern highlands agro - ecological zone of Uganda. A multi- stage sampling procedure was employed to select 636 households (499 informal seed producers and 137 formal seed producers) from which data was collected for two seasons using a semi - structured questionnaire. Data was analyzed using the stochastic frontier approach with a one - step approach. Maximum likelihood estimates for the efficiency parameters showed that both informal and formal seed potato producers were not fully efficient. The mean technical efficiency for informal and formal seed potato producers was 8 1 .4 and 80.4 percent respectively. In terms of yield loss, informal and formal seed potato producers respectively lost an average of 981 and 1,208 kg/acre of seed potato tubers due to inefficiency factors . Specifically, off- farm income source, scale of production, seasonal variation, access to extension services and seed producer being male positively influenced informal seed producers’ technical efficiency while producers’ level of education and seed potato variety diversity negatively influenced their efficiency. For formal seed producers, technical efficiency was influenced positively by producers’ education and negatively by household size. The study suggests that there is an opportunity to improve technical efficiency of informal and formal seed producers by 19 and 20 percent respectively. Therefore, this calls for increased investment in developing and promoting high yielding varieties, provision of extension services, input intensification and addressing gender issues in seed potato production in the context of limited arable land .

scholarly journals PSII-22 Comparison of the meat quality traits of crossbred pigs and the Large Black pigs

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 241-242
Author(s):  
Yongjie Wang ◽  
Keshari Thakali ◽  
Sarah Shelby ◽  
Jason Apple ◽  
Yan Huang
Keyword(s):  
Meat Quality ◽  
Genomic Diversity ◽  
Longissimus Dorsi ◽  
Rna Seq ◽  
Longissimus Dorsi Muscle ◽  
A Value ◽  
Dorsi Muscle ◽  
Body Weights ◽  
C Value ◽  
Crossbred Pigs

Abstract The purpose of this study was to compare the meat quality and genomic differences between cross-bred commercial pig (CP) and domestic Large Black pig (BP). Seven cross-bred commercial pigs and eight British Large Black pigs were assigned to CP group and BP group, with initial mean body weights of 18.82±1.412 kg for CP group and 23.31±1.935 kg for BP group, P = 0.061, and fed ad libitum. The final BW of the CP at d101 was similar to the BP (130.0±8.16 kg vs. 121.1±2.80 kg, P = 0.132). However, the BP group took 108 days to reach the final BW. The ADG in the CP was higher than BP (1.102±0.0599 kg vs. 0.905±0.0138 kg, P = 0.003). The hot carcass weight of CP was higher (P < 0.01) than BP, but the backfat of BP was higher (P < 0.01) than CP. The a* value of CP was higher (P < 0.05) than BP, and the c* value of CP was tended to be higher (P < 0.10) than BP. However, the h value of BP was higher (P < 0.05) than CP. The longissimus dorsi muscle fat content of BP was higher (P < 0.05) than CP. For the fatty acid composition, the SFA and MUFA of BP were higher (P < 0.05) than CP, but the PUFA of CP was higher (P < 0.05) than BP. The metmyoglobin content of CP was tended to be higher (P < 0.10) than BP. For the meat metabolism, the oxygen consumption of longissimus dorsi muscle of BP was higher (P < 0.01) than CP. The RNA-Seq data showed that the expression of the genes related to lipid metabolism is higher in BP (fold change > 3, P < 0.05). To conclude, BP has higher meat quality, while CP has its advantages in growth performance. And the differences between these two breeds may due to the genomic diversity.

scholarly journals Pengaruh Lokasi Geografis dan Vegetasi terhadap Sifat Fisikokimia Madu dari Ciwidey dan Bogor

2020 ◽  
Vol 1 (2) ◽  
pp. 71
Author(s):  
Emanuela Rae Alodia ◽  
Anas Bunyamin ◽  
Efri Mardawati
Keyword(s):  
Physicochemical Properties ◽  
Water Content ◽  
Sugar Content ◽  
Geographical Location ◽  
B Value ◽  
Reducing Sugar ◽  
National Standard ◽  
Color Analysis ◽  
A Value ◽  
C Value

<p><em>Physicochemical properties are one of the parameters of honey quality that impacts the sales of honey as well as the economy condition of the society in Ciwidey and Bogor. The physicochemical properties of honey are significantly influenced by the origin of the honey, including its geographical location and vegetation. This study aims to determine the physicochemical properties between multiflora honey from Ciwidey and Bogor with different source of nectar where Ciwidey honey is dominated by calliandra nectar while Bogor honey is dominated by kapok nectar. Data were analyzed with descriptive and quantitative method using independent t test for data with normal distribution (water content and reducing sugar content). Data that were not normally distributed (color analysis and acidity value) were tested non-parametrically with the Mann Whitney-U. The results showed that Bogor honey has the better physicochemical properties and meets Indonesian National Standard (Standar Nasional Indonesia, SNI) 8664:2018, with a water content of 15.15% w/w, L* values of 35.26, a* value of 28.66, b* value of 59.46, c* value of 66.01, h* value of 64.27°, reducing sugar content of 78.78% and acidity value of 35.56 mL NaOH kg-1. Phytochemical screening showed positive results on alkaloid, flavonoid, phenol and tannin, and the results of GC-MS analysis showed three significant compounds which are hydroxymethylfurfural of 48.26%, levoglucosan of 13.58% and ammonium carbamate of 9.18%.</em></p>

scholarly journals Efficacité Technique des Petits Producteurs du Maïs au Bénin

2018 ◽  
Vol 14 (19) ◽  
pp. 109
Author(s):  
Fawaz A. Adéchinan Aminou
Keyword(s):  
Technical Efficiency ◽  
Stochastic Frontier ◽  
Farm Households ◽  
Farm Income ◽  
Selling Price ◽  
Stochastic Frontier Approach ◽  
Access To Credit ◽  
Seed Distribution ◽  
Production Area ◽  
Low Efficiency

This study examines how small maize farmers allocate their production inputs and identifies the elements that characterize efficient farms. A Cobb Douglas stochastic frontier approach is used to estimate farm level technical efficiency of maize farmers. Average technical efficiency of sampled farms was estimated to be 65.40% with a minimum of 20.47% and a maximum of 93.46%. The study further showed that the farmers’ sex, the use of improved seeds, the maize selling price, the non-farm income, the contact with an NGO, the access to credit and the production area played a positive and significant role in improving technical efficiency. The results imply that government can save resources used in extension services and focus on its improved seed distribution policy. Also, imperfections in the labor/capital market contribute to the low efficiency of farm households.

Turbocharger Turbine Rotor Design for Low U/C Values

2019 ◽  
Author(s):  
Hua Chen ◽  
Yuchao Song ◽  
Aiguo Gu ◽  
Yangfang Zhang ◽  
Hongwei Li
Keyword(s):  
Internal Combustion Engines ◽  
Mechanical Design ◽  
Turbine Rotor ◽  
Expansion Ratio ◽  
Test Results ◽  
Rotor Design ◽  
A Value ◽  
Emission Regulations ◽  
Blade Tip ◽  
C Value

Abstract Emission regulations worldwide demand better low-end torque from internal combustion engines. This pushes the operating condition of turbocharger turbine to lower U/C values, where U is the blade tip speed and C is the turbine isentropic spouting velocity which increases with turbine expansion ratio. Traditional radial and some mixed flow turbines, dictated by their rotor design, have their efficiency peaks at U/C value around 0.70, a value considerably larger than desired. In this paper, we deliberate the measures to shift the peak efficiency of turbine rotor toward a lower U/C value than 0.7. The underlying physics of these measures are first explained, CFD and test results where available are then given. Implications to mechanical design, manufacturing and others are also discussed. Finally, an example of a turbine rotor design is given implementing these measures. Test results showed better efficiency was obtained from the design at lower U/C values than from the baseline.

scholarly journals Analysis of technical efficiency in maize production in Guji Zone: stochastic frontier model

2020 ◽  
Vol 9 (1) ◽  
Author(s):  
Aschalew Shiferaw Belete
Keyword(s):  
Maximum Likelihood ◽  
Technical Efficiency ◽  
Stochastic Frontier ◽  
Maize Yield ◽  
National Average ◽  
Likelihood Method ◽  
Farm Income ◽  
Total Production ◽  
Maize Production ◽  
Truncated Normal

Abstract Background The Guji Zone in particular and Oromia region in general have a huge potential for crop production that can even contribute for the country as a whole in the struggle for achieving food security. Maize is Ethiopia’s largest cereal crop in terms of total production, acreage, and the number of farm holdings. It is one of the staple crops produced in the study area. However, the farm productivity per hectare is low compared to the national average which indicates the presence of farming inefficiency in the study area. Thus, this study was undertaken with the objective of estimating the level of farmers’ technical efficiency in maize production and identifying the factors which determine the variation in the level of technical efficiency among the farmers. Results This study was relied on the primary data collected from a sample of maize producing farm household of Adola Rede and Anna Sorra districts of the Guji Zone using a survey questionnaire. A simple random sampling technique was found appropriate for selecting the respondents, since the populations of these study area are homogeneous. The analysis was relied on a cross-sectional data collected from 234 sample farm households. A one-step stochastic frontier normal/truncated-normal model was used to estimate the farmers’ technical efficiency as well as to identify the determinants of yield per hectare of maize which was estimated by maximum-likelihood method. The empirical result indicates that there are large numbers of inefficient farmers in both districts. The estimated technical efficiency for maize producing farmers is equal to 69.03%. Besides, the current study revealed that 69.23% of maize producing farmers have been operating within a technical efficiency score interval equal to (0.5–0.75) in both districts. In addition, the maize yield per hectare in the study area is very low compared to the national average, i.e., the mean yield is 19.2 quintal per hectare. Moreover, the maximum-likelihood results show that gender of the head of the household, age of the head of the household, farm income, row planting, access to credit, number of active labor force, land size owned, access to improved seed and seed type used, and number of livestock were significantly determine the farmers technical inefficiency. Conclusion The results of the study revealed that there is an opportunity which is being squandered in maize production in the study area. For instance, with a given technology, it is possible to raise the maize yield per hectare by 30.07% in the study area. Thus, the government and any concerned stakeholders should facilitate access to improved seed and fertilizer, credit, farm technology, and short-term training. Besides, all stakeholders should work in a cooperative and organized manner to implement the full agricultural package on farm level.

One new and two known species of Dorylaimoidea (Nematoda) from West Bengal, India

Zootaxa ◽  
2012 ◽  
Vol 3258 (1) ◽  
pp. 46
Author(s):  
DEBABRATA SEN ◽  
AMALENDU CHATTERJEE ◽  
BUDDHADEB MANNA
Keyword(s):  
New Species ◽  
West Bengal ◽  
Tail Length ◽  
B Value ◽  
Small Populations ◽  
Morphometric Measurements ◽  
Intestinal Tissue ◽  
Male Characters ◽  
A Value ◽  
C Value

Small populations of Laimydorus istvani sp. n., Laimydorus baldus Baqri & Jana, 1982 and Dorylaimus sp. were collected fromthe soil around the roots of guava at south 24-Parganas district, West Bengal, India. Laimydorus istvani sp. n. is characterizedby its odontostyle being distinctly thicker than the cuticle at the same level, cardia shape: rounded-conoid, wide at pharyngo-intestinal junction, enveloped by intestinal tissue which forms a conical projection extending into the lumen of intestine;delicate ring-like structure between the pharyngeal base and the proper cardia. Laimydorus istvani sp. n. comes close to L.multialaeus (Khera, 1970) Baqri, 1985, L. siddiqii Baqri & Jana, 1982 and L. baldus Baqri & Jana, 1982, but can bedistinguished from these species on the basis of different morphometric measurements. The new species differs from L.multialaeus in having higher a value, lower b value and longer odontostyle in females, and. longer body, lateral guiding piecesand tail in males. From L. siddiqii the new species differs in having a shorter tail in relation to body length, shorter cardia withdifferent shape, shorter prerectum and longer rectum in female, different number of ventromedian supplements and shorterspicules in males. From L. baldus, it differs in having a longer body, greater a-value, longer odontostyle and odontophore andlonger tail in females. Laimydorus istvani sp. n. differs from the males of L. baldus by its longer body, greater c value and in thenumber of ventromedian supplements. The population of L. baldus from West Bengal agrees well with the original descriptionexcept for some variations in body, odontophore, prerectum and tail length. New data on male characters have been provided inthe present study. The specimens of Dorylaimus sp. come close to D. geraerti Baqri & Jana, 1986 except in some morphometricmeasurements including: b (4.2–5.1 vs. 4.3–4.7), odontophore length (33–54 μm vs. 40–43 μm, prerectum length in females(120–160 μm vs. 196–241 μm and tail length in females (247.5–294 μm vs. 249–406 μm). In males, the supplements (36 innumber) occur in a contiguous series (as is usually seen in the genus Dorylaimus Dujardin, 1845), whereas in the typespecimens of D. geraerti 35–38 supplements are largely contiguous except for a set of 4–5 spaced supplements in the middle of the series, showing a resemblance with the genus Ischiodorylaimus Andrássy, 1969.

Myctolaimus platypi sp. n. (Nematoda: Cylindrocorporidae) isolated from the oak borer, Platypus quercivorus (Coleoptera: Platypodidae)

Nematology ◽  
2006 ◽  
Vol 8 (5) ◽  
pp. 717-725 ◽  
Author(s):  
Natsumi Kanzaki ◽  
Masahide Kobayashi ◽  
Ai Nozaki ◽  
Kazuyoshi Futai
Keyword(s):  
New Species ◽  
Body Length ◽  
B Value ◽  
New Combinations ◽  
Male And Female ◽  
Platypus Quercivorus ◽  
The Third ◽  
A Value ◽  
Third Stage ◽  
C Value

Abstract Myctolaimus platypi sp. n. is described and figured. The third-stage dauer juveniles of M. platypi sp. n. were isolated from the underside of the elytra of the oak borer, Platypus quercivorus, and were reared on an Asparagine-Mannitol (A-M) agar. Specimens of adult nematodes for description and measurements were collected from a 2-week-old culture on A-M agar. The new species is characterised by having the stoma shorter than the pro-metacorpus, shape of the rounded-cylindroid pro-metacorpus, the obvious longitudinal striations on the cuticle, and thick cuticle. The male and female of the new species have a body length of ca 700-1000 μm, a value of ca 20, b value of ca 6, and c value of ca 10. Males of the new species have strongly arcuate, C-shaped spicules 71 (62-80) μm long, 29 (25-35) μm long gubernaculum with pointed distal end, and nine pairs of caudal papillae. There is no bursa. Ceratosolenus is proposed as a junior synonym of Myctolaimus and the following new combinations are also proposed: M. anoplophorae comb. n.; M. inevectus comb. n.; and M. racemosa comb. n.

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