scholarly journals Assessment of combifeed components dosing system under farm conditions

2020 ◽  
pp. 93-99
Author(s):  
Alexander Georgievich Sergeev ◽  
Sergey Yuryevich Bulatov ◽  
Vladimir Nikolaevich Nechaev ◽  
Peter Alekseevich Savinyh ◽  
Anatoly Evgenyevich Shamin
Keyword(s):  
Total Weight ◽  
Mixed Feed ◽  
Theoretical Dependence ◽  
Livestock Farm ◽  
Dosing Error ◽  
Reference Weight ◽  
Relationship Of

The article considers the results of determining the main characteristics of the operation of the dosage modules of macro- and micro-components of mixed feed in the conditions of the fodder preparation division of the livestock farm. Relationship of reduction of dosing error with increase of weight of suspended components and at their total value is revealed. Microcomponent Vitex D, with a reference weight of 4 kg, was found to have the largest deviation of 12,63 %. However, when dosing four microcomponents with a total weight of 54,4 kg (Status 2, chalk, RumiMix, Vitex D), the dosing error does not exceed 0,71%. For macrocomponents the error value does not exceed 2 %. Theoretical dependence describing dosing error depending on the weight of the dosed component is revealed.

scholarly journals Length–weight relationship of Charybdis callianassa Herbst, 1789 (Decapoda: Brachyura) in relation to sex and carapace length along the Mumbai coastal water, India

2021 ◽  
Vol 82 (1) ◽  
Author(s):  
Rinkesh N. Wanjari ◽  
Karankumar K. Ramteke ◽  
Shailendra Raut ◽  
Nishikant Gupta
Keyword(s):  
Body Weight ◽  
Coastal Water ◽  
Carapace Length ◽  
Total Weight ◽  
Pooled Data ◽  
Weight Relationship ◽  
Trawl Fishing ◽  
Relationship Of ◽  
First Time ◽  
Fisheries Biology

Abstract Background The present study was performed to determine carapace length–body weight relationship of Charybdis callianassa. In fisheries biology, length–weight relationships are important as they allow for the calculation, by creating a mathematical equation between the two, of the total weight of the fish in a particular group in fish. Such information is helpful for fishery scientists to research the dynamics of development and populations and for public agencies that can maintain and preserve these resources sustainably. Results A study on the carapace length–body weight relationship of Charybdis callianassa (Herbst, 1789) was made on the northwest coast of India for the first time. The study was based on experimental trawl fishing conducted fortnightly from August 2019 to March 2020. A total of 479 specimens, including 262 males and 217 females from fishing trawler, were examined for their carapace length and total weight. The carapace length ranged from 2.69 to 3.54 cm, and the total weight from 5.26 to 7.36 g. This analysis revealed that the crabs exhibited negative allometric development, as shown by average exponents 'b' = 2.71 for pooled data with high coefficient (r) = 0.91 and r2 = 0.83. Conclusions The carapace length–body weight relationship of Charybdis callianassa in relation to sex and carapace was studied in the Mumbai coastal water, India. We found major differences in the average “r2” values of species reported for males (0.89), females (0.79) and pooled data (0.83). Such kind of study is essential for fisheries biology to comprehend the differences in circumstances in small and large specimens that vary with environmental conditions and seasons.

Hubungan Panjang Berat Dan Faktor Kondisi Loligo chinensis yang Didaratkan di TPI Tambak Lorok Semarang

2021 ◽  
Vol 10 (2) ◽  
pp. 190-199
Author(s):  
Noel Mansen Sitompul ◽  
Ria Azizah ◽  
Munasik Munasik
Keyword(s):  
Economic Value ◽  
Fishing Effort ◽  
The Body ◽  
Total Weight ◽  
Mantle Length ◽  
Entire Sample ◽  
June July ◽  
Relationship Of ◽  
The Relationship

Loligo chinensis merupakan salah satu jenis cumi-cumi yang memiliki nilai ekonomis penting di TPI Tambak Lorok Semarang. Produksi cumi-cumi merupakan hasil tangkapan dari alam, upaya penangkapan yang semakin tinggi dapat menyebabkan penurunan stok sumberdaya cumi-cumi. Tujuan penelitian ini adalah untuk mengetahui aspek biologi L.chinensis yang ada di Tambak Lorok yang meliputi hubungan panjang berat, faktor kondisi, dan pola pertumbuhan. Penelitian ini dilaksanakan pada bulan Juni-Juli 2020. Analisis data yang digunakan dalam penelitian adalah regresi linier sederhana dari log PM (panjang mantel) dan log W (weight) untuk mengetahui hubungan panjang beratnya. Nilai hubungan panjang berat L.chinensis mempunyai persamaan W = 0,00048L2,4921 untuk keseluruhan sampel, W = 3,237L0,84 pada betina dan W = 3,29L0,827 pada jantan dengan nilai slope (b) 2,4921; 0,84; dan 0,827. Nilai slope tersebut menunjukkan bahwa pertumbuhan L.chinensis bersifat alometrik negatif. Nilai faktor kondisi (Kn) = 1,064 pada keseluruhan sampel, Kn = 1,713 pada betina dan Kn = 1,63 pada jantan, nilai tersebut menunjukkan spesies ini tergolong memiliki badan yang kurus. Pertumbuhan panjang mantel (PM) L.chinensis tumbuh lebih lambat dibanding organ tubuh lain, kecuali terhadap berat tubuhnya. Loligo chinensis is one type of squid that has economic value crucial in the Tambak Lorok Semarang. Squid production mainly comes from nature, high fishing effort can cause a decrease in squid resource stock. The purpose of this study is to know the biological aspect L.chinensis in the Tambak Lorok include long weight relationships, condition factors, and the quality of alometry growth. The study was carried out in June-July 2020. The data analysis used is simple linear regression from the PM’s log (mantle length) and log W (weight) to know the relationship of its weight length. The relationship value between total length and total weight of L.chinensis has a W = 0,00048L2,4921 equation for the entire sample, W = 3,237L0,84 in the female and W = 3,29L0,827 in the male with slope (b) 2,4921; 0,84; and 0,827. Value slope shows the growths L.chinensis is negative alometrice. The value of the condition factor (Kn) = 1,064 in the entire sample, Kn = 1,713 in the female and Kn = 1,63 in the male. The value suggests that the species is thick-skinned. The growth of the mantle length (PM) of L.chinensis grows slower than other organs of the body, except for its total weight.

scholarly journals Taxonomy, length-weight relationship, food and feeding habits of flower moon crab Matuta planipes Fabricius, 1798 from coastal waters of Gopalpur, Odisha, India

2017 ◽  
Vol 64 (3) ◽  
Author(s):  
Durga Prasad Behera ◽  
S. Y. Tenjing ◽  
Rocktim Ramen Das ◽  
Laxman Nayak ◽  
D. Mohapatra
Keyword(s):  
Coastal Waters ◽  
Carapace Length ◽  
Feeding Habits ◽  
Carapace Width ◽  
Total Weight ◽  
Linear Pattern ◽  
Food And Feeding ◽  
Males And Females ◽  
Relationship Of ◽  
The Relationship

The relationship between carapace length (CL), carapace width (CW) and total weight (TW) in the flower moon crab Matuta planipes Fabricius, 1798 was studied and found to be CL = 0.144+1.319 CW and CL = 0.356+1.273 CL for males and females respectively. In case of the carapace width and total weight, the relationships were: TW = 0.272 CW3.011 and TW = 0.474 CW2.555 for males and females respectively. The relationships of carapace length and total weight were: TW = 0.128 CL2.917 for males and TW = 0.184 CL2.650 for females. A linear pattern was found between the relationship of CL and CW for M. planipes, whereas a curvilinear pattern was found between the relationship of CL/CW and TW in the present study. It was also observed that M. planipes is an opportunistic omnivore, seaweed being the most dominant food item followed by crustaceans, seagrass, amphipods and miscellaneous matter.

Growth and morphometry in abalone (Haliotis rubra Leach) from Victoria

1988 ◽  
Vol 39 (2) ◽  
pp. 161 ◽  
Author(s):  
PE McShane ◽  
MG Smith ◽  
KHH Beinssen
Keyword(s):  
Growth Rate ◽  
Growth Rates ◽  
Shell Height ◽  
Somatic Tissue ◽  
Total Weight ◽  
Site Variation ◽  
Different Seasons ◽  
Haliotis Rubra ◽  
Study Sites ◽  
Relationship Of

Several Victorian populations of the abalone Haliotis rubra were studied. A comparison was made of relationships of the dependent variables, shell width, shell height, foot weight and total weight with shell length of abalone collected from several sites at different seasons. Male and female H. rubra were morphometrically similar. In contrast, the morphometrics for abalone collected from the same site at different times were significantly different, as were the morphometrics of abalone collected from different sites at the same time. Weight yields (foot weight relative to total weight) from Portsea and Apollo Bay were highest in winter and lowest in summer. This correlated with the known reproductive cycle in H. rubra, suggesting a relationship of gonad fullness and somatic tissue weight. Morphometric heterogeneity was attributed to differences in growth rates between sites. Growth rates were estimated at three sites and significant between-site variation was shown. At Mallacoota, H. rubra tagged with a threaded wire tag yielded lower estimates of growth rate than those to which tags were affixed with glue. Differences in growth rate, exclusive of tagging method, were attributed to difference of exposure between the study sites.

Growth and condition in the Northwest Atlantic harp seal

1995 ◽  
Vol 52 (3) ◽  
pp. 478-488 ◽  
Author(s):  
M. O. Hammill ◽  
M. C. S. Kingsley ◽  
G. G. Beck ◽  
T. G. Smith
Keyword(s):  
Body Weight ◽  
Sexual Dimorphism ◽  
Body Condition ◽  
Growth Curves ◽  
Sampling Bias ◽  
Total Weight ◽  
Volume Index ◽  
Asymptotic Growth ◽  
Relationship Of ◽  
The Relationship

We analysed the relationship of length to age in a sample of 204 harp seals collected in 1976–1979 and of 437 animals collected in 1988–1992, by fitting asymptotic growth curves. The only significant variations were in asymptotic length, which for 1988–1992 was significantly larger for males (170.4 cm) than for females (165.3 cm). This sexual dimorphism was not significant in 1976–1979, because the fitted asymptotic length of females varied greatly from year to year, being large in the 1976–1979 samples. An index of body condition (total weight/length2.6) and a volume index constructed by regressing body weight on length × axillary girth squared indicated that harp seals collected in 1988–1992 were in poorer condition than animals collected during 1976–1979. Although this suggests a decline in available resources, the possibility of differences arising from sampling bias cannot be excluded.

scholarly journals Population Analysis (Total Weight, CaCO3 Total Weight and Segment Numbers) of Halimedaopuntia (Linn.) Lamouroux in Tongkeina Waters, Manado

2016 ◽  
Vol 3 (2) ◽  
pp. 68
Author(s):  
Kristianto Parera ◽  
Rene Charles Kepel ◽  
Alex D. Kambey
Keyword(s):  
Regression Analysis ◽  
Population Analysis ◽  
Strong Relationship ◽  
Total Weight ◽  
Line Transect ◽  
Caco3 Content ◽  
Wet Weight ◽  
Line Transects ◽  
Relationship Of ◽  
The Relationship

This study were aiming to know the biological aspects of H. opuntia in term of its total wet weight, CaCO3total weight and segment numbers and relationship of segment numbers with total weight (wet and CaCO3 content). Data collection was conducted in June, 2015 and samples were taken during the day light during the low tides. Line transect and quadrate of 1 x 1 meter were used in this study. In total there are 3 line transects of50 meter in length with 25 meter distant apart of each transect and were deployed perpendicular toward coastal line. To reveal the variation on total wet weight, CaCO3 wet content and segment numbers the data were plotted on bar diagram. The regression analysis and analysis of variance also were used to reveal the relationship among the parameters measured. The result of the study are as follow:  total individuals are 215 with composition of 76 individuals in transect 1; 66 individuals in transect 2 and 73 individuals in transect 3; total wet weight: 1,259.429 gram;  total weight of CaCO3: 354.551 gram; and segment numbers 82.580. The result of regression analysis shows that there is a strong relationship between number of segment and CaCO3 wet content. Keyword : Population Analysis, Halimeda opuntia   ABSTRAK   Tujuan dari penelitian ini adalah untuk mengetahui berat basah total, berat kapur total dan  jumlah segmen total serta hubungan jumlah segmen total dengan berat basah total dan hubungan jumlah segmen total dengan berat kapur total dari Halimeda opuntia. Penelitian ini dilakukan di perairan Tongkaina Kota Manado pada bulan Juni 2015.  Pengambilan sampel dilakukan pada siang hari pada saat keadaan air laut surut dengan menggunakan metode transek dan kuadrat dengan ukuran 1 x 1 meter.  Pengambilan sampel dibagi atas 3 transek dengan masing-masing transek terdiri dari 10 kuadrat dengan panjang transek masing-masing 50 m, jarak antara transek dengan lainnya 25 m dan jarak antara titik kuadrat dengan lainnya 5 m. Untuk melihat variasi ukuran berat basah total, jumlah segmen total dan berat kapur total pada sampel dari lokasi penelitian tersebut, maka dibuat diagram batang, analis hubungan dan analisis keragaman.  Hasil penelitian diperoleh 215 individu masing-masing 76 individu (transek 1), 66 individu (transek 2) dan 73 individu (transek 3).  Jumlah berat basah total yang dihitung adalah 1.259,429 gram, berat kapur total  354,551 gram dan jumlah segmen total 82.580 segmen. Hasil analisis regresi hubungan jumlah segmen menunjukan bahwa hubungan kedua variabel tersebut memiliki hubungan yang sangat kuat dan analisis regresi hubungan jumlah segmen total dan berat kapur total memiliki hubungan yang kuat. Kata kunci: Analisis Populasi, Halimeda opuntia 1Mahasiswa Program Studi MSP FPIK-UNSRAT 2Staf pengajar Fakultas Perikanan dan Ilmu Kelautan Universitas Sam Ratulangi

The relationship of the scleractinian corals to the rugose corals

Paleobiology ◽  
1980 ◽  
Vol 6 (02) ◽  
pp. 146-160 ◽  
Author(s):  
William A. Oliver
Keyword(s):  
Critical Points ◽  
Scleractinian Corals ◽  
Convincing Evidence ◽  
Early Triassic ◽  
Rugose Corals ◽  
History Of ◽  
The Subject ◽  
Relationship Of ◽  
The Relationship ◽  
Biologic Factors

The Mesozoic-Cenozoic coral Order Scleractinia has been suggested to have originated or evolved (1) by direct descent from the Paleozoic Order Rugosa or (2) by the development of a skeleton in members of one of the anemone groups that probably have existed throughout Phanerozoic time. In spite of much work on the subject, advocates of the direct descent hypothesis have failed to find convincing evidence of this relationship. Critical points are:(1) Rugosan septal insertion is serial; Scleractinian insertion is cyclic; no intermediate stages have been demonstrated. Apparent intermediates are Scleractinia having bilateral cyclic insertion or teratological Rugosa.(2) There is convincing evidence that the skeletons of many Rugosa were calcitic and none are known to be or to have been aragonitic. In contrast, the skeletons of all living Scleractinia are aragonitic and there is evidence that fossil Scleractinia were aragonitic also. The mineralogic difference is almost certainly due to intrinsic biologic factors.(3) No early Triassic corals of either group are known. This fact is not compelling (by itself) but is important in connection with points 1 and 2, because, given direct descent, both changes took place during this only stage in the history of the two groups in which there are no known corals.

Skeletal elements of crinoid echinoderms: High-resolution structural and microanalytical results

1983 ◽  
Vol 41 ◽  
pp. 194-195
Author(s):  
D. F. Blake ◽  
L. F. Allard ◽  
D. R. Peacor
Keyword(s):  
High Resolution ◽  
Marine Invertebrates ◽  
Sea Urchins ◽  
Structural Features ◽  
Sea Stars ◽  
High Resolution Tem ◽  
Relationship Of ◽  
The Relationship ◽  
Insight Into

Echinodermata is a phylum of marine invertebrates which has been extant since Cambrian time (c.a. 500 m.y. before the present). Modern examples of echinoderms include sea urchins, sea stars, and sea lilies (crinoids). The endoskeletons of echinoderms are composed of plates or ossicles (Fig. 1) which are with few exceptions, porous, single crystals of high-magnesian calcite. Despite their single crystal nature, fracture surfaces do not exhibit the near-perfect {10.4} cleavage characteristic of inorganic calcite. This paradoxical mix of biogenic and inorganic features has prompted much recent work on echinoderm skeletal crystallography. Furthermore, fossil echinoderm hard parts comprise a volumetrically significant portion of some marine limestones sequences. The ultrastructural and microchemical characterization of modern skeletal material should lend insight into: 1). The nature of the biogenic processes involved, for example, the relationship of Mg heterogeneity to morphological and structural features in modern echinoderm material, and 2). The nature of the diagenetic changes undergone by their ancient, fossilized counterparts. In this study, high resolution TEM (HRTEM), high voltage TEM (HVTEM), and STEM microanalysis are used to characterize tha ultrastructural and microchemical composition of skeletal elements of the modern crinoid Neocrinus blakei.

Studies on Leukemogenic and Sarcomagenic Viruses

1970 ◽  
Vol 28 ◽  
pp. 156-157
Author(s):  
Leon Dmochowski
Keyword(s):  
Electron Microscopy ◽  
Electron Microscope ◽  
Morphological Properties ◽  
Mode Of Development ◽  
Relationship Of ◽  
The Relationship

Electron microscopy has proved to be an invaluable discipline in studies on the relationship of viruses to the origin of leukemia, sarcoma, and other types of tumors in animals and man. The successful cell-free transmission of leukemia and sarcoma in mice, rats, hamsters, and cats, interpreted as due to a virus or viruses, was proved to be due to a virus on the basis of electron microscope studies. These studies demonstrated that all the types of neoplasia in animals of the species examined are produced by a virus of certain characteristic morphological properties similar, if not identical, in the mode of development in all types of neoplasia in animals, as shown in Fig. 1.

The relationship of IGE receptor topography to signaling activity in RBL-2H3 mast cells

1991 ◽  
Vol 49 ◽  
pp. 236-237
Author(s):  
J.R. Pfeiffer ◽  
J.C. Seagrave ◽  
C. Wofsy ◽  
J.M. Oliver
Keyword(s):  
Mast Cells ◽  
Protein A ◽  
Scattered Electron ◽  
Ige Receptor ◽  
Receptor Complexes ◽  
Ige Binding ◽  
Electron Imaging ◽  
Small Clusters ◽  
Relationship Of ◽  
The Relationship

In RBL-2H3 rat leukemic mast cells, crosslinking IgE-receptor complexes with anti-IgE antibody leads to degranulation. Receptor crosslinking also stimulates the redistribution of receptors on the cell surface, a process that can be observed by labeling the anti-IgE with 15 nm protein A-gold particles as described in Stump et al. (1989), followed by back-scattered electron imaging (BEI) in the scanning electron microscope. We report that anti-IgE binding stimulates the redistribution of IgE-receptor complexes at 37“C from a dispersed topography (singlets and doublets; S/D) to distributions dominated sequentially by short chains, small clusters and large aggregates of crosslinked receptors. These patterns can be observed (Figure 1), quantified (Figure 2) and analyzed statistically. Cells incubated with 1 μg/ml anti-IgE, a concentration that stimulates maximum net secretion, redistribute receptors as far as chains and small clusters during a 15 min incubation period. At 3 and 10 μg/ml anti-IgE, net secretion is reduced and the majority of receptors redistribute rapidly into clusters and large aggregates.

Sign in / Sign up

Export Citation Format

Share Document