scholarly journals Fisheries-biological evaluation of young-of-the-year wild carp-domestic carp hybrid of different genesis

2021 ◽  
pp. 66-79
Author(s):  
U. Kuts’ ◽  
◽  
H. Kurinenko ◽  
Keyword(s):  
Growth Rate ◽  
Comparative Analysis ◽  
Biological Evaluation ◽  
Research Station ◽  
Main Body ◽  
Biological Parameters ◽  
Genetic Origin ◽  
Young Of The Year ◽  
Fish Productivity ◽  
Wild Carp

Purpose. To provide a comparative analysis of fisheries and biological parameters of young-of-the-year wild carp-domestic carp hybrids obtained from males of different genetic origin by natural spawning method, with subsequent use in industrial hybridization. Methodology. Cultivation was carried out in pond conditions of the Lviv Research Station of the Institute of Fisheries of NAAS. Material for the study were young-of-the-year wild carp-domestic carp hybrids obtained from age-8 and 9 males of Amur wild carp of different genesis. Stocking density of 4-day larvae in nursery ponds was 20 thousand ind./ha. Growth rate was evaluated by using absolute, relative, daily and specific growth rate according to I.I. Schmalhausen. Feeding of fish was carried out with ground grain, starting from the first decade of July. Statistical processing of the material was performed in Microsoft Excel 2016. Criteria for the analysis of parameters were their average value and arithmetic mean error (M ± m). Findings. According to performed studies, young-of-the-year wild carp-domestic carp hybrids obtained from Amur wild carp males of different genesis in terms of dynamics of weight accumulation and linear growth, survival, fish productivity, hybrids obtained from cryo-males were not inferior to young-of-the-year wild carp-domestic carp obtained from local males. However, according to the main body-build indices, they had similar values but were slightly inferior. Originality. For the first time in Ukraine, a comparative analysis of fisheries and biological parameters of young-of-the-year wild carp-domestic carp hybrids obtained from males of different genetic origin in terms of industrial hybridization was performed. Practical value. The results of this work will provide a comprehensive assessment of fish and biological parameters of young-of-the-year wild carp-domestic carp hybrids obtained from Amur wild carp males of different genetic origin and justify their use in breeding work for further reproduction in breeding farms and to obtain industrial hybrids. Key words: Amur wild carp, genesis, body weight, body length, fatness, fish productivity.

scholarly journals Services Sector in Lithuania: Labour Productivity as a Factor of Growth

Ekonomika ◽  
2008 ◽  
Vol 81 ◽  
Author(s):  
Jolanta Žemgulienė
Keyword(s):  
Growth Rate ◽  
Comparative Analysis ◽  
Productivity Growth ◽  
Labour Productivity ◽  
Value Added ◽  
Service Industries ◽  
Services Sector ◽  
Labour Productivity Growth ◽  
Empirical Regularities ◽  
The Relationship

This paper examines the tendencies of Lithuanian services sector’s value added and labour productivity during 1995-2006. Comparative analysis of the average annual labour productivity growth in manufacturing and service industries reveals arguments supporting the W. Baumol’s consideration that there can be sporadic productivity increases in nonprogressive sectors. During 1995-2000, labour productivity growth in services exceeded productivity growth in manufacturing. The paper offers an interpretation of the Verdoom law for empirical regularities of the relationship between the cross-sectorial labour productivity growth rate and the value added growth rate.

scholarly journals INDICATIONS OF TISSUE SPECIFICITY IN A TRANSPLANTABLE SARCOMA

1924 ◽  
Vol 39 (3) ◽  
pp. 447-456 ◽  
Author(s):  
Leonell C. Strong
Keyword(s):  
Growth Rate ◽  
Tissue Specificity ◽  
Genetic Factors ◽  
Genetic Constitution ◽  
Genetic Origin ◽  
Transplanted Tumor

1. A sarcoma of the mouse which has proved to be transplantable to a great variety of strains of mice does not furnish an exception to the theory that transplantability is controlled by genetic factors, since this tumor possesses some characteristics that are more than probably genetic. 2. The phenomenon of the assumption of tissue specificity on the part of the host may possibly be of genetic origin. 3. The evidence suggests that the gonads have some influence on the assumption of tissue specificity on the part of the host. 4. The growth rate of the transplanted tumor may possibly be correlated with the genetic constitution of the host.

Comparative analysis of growth rate reductions on shadow masked substrates

1991 ◽  
Vol 59 (24) ◽  
pp. 3145-3147 ◽  
Author(s):  
K. De Vlamynck ◽  
G. Coudenys ◽  
P. Demeester
Keyword(s):  
Growth Rate ◽  
Comparative Analysis

Growth and carcase composition of yearling cattle fattened on combinations of hay, grain and NPN in a feedlot and on grain supplemented pastures

1975 ◽  
Vol 15 (74) ◽  
pp. 299 ◽  
Author(s):  
LR Corah ◽  
SA Jackson ◽  
AH Bishop
Keyword(s):  
Growth Rate ◽  
Carcass Composition ◽  
Research Station ◽  
Similar Time ◽  
Protein Nitrogen ◽  
Ad Libitum ◽  
Four Levels ◽  
Time Required ◽  
Western Victoria ◽  
Comparable Quality

Hereford steers aged 10 to 12 months were fattened on a range of diets including two types of hay (pasture hay, oaten hay), three types of grain (oats, wheat, barley), four levels of oats (1/2, 1 and 1 1/2 per cent of liveweight per day and ad libitum) and non-protein nitrogen as a supplement to the oaten hay. In addition, two groups of steers were grazed on pasture and one of these was supplemented with oats at the rate of 13 per cent of liveweight per day. The experiment was conducted at the Pastoral Research Station in western Victoria. Steers fed pasture hay, either alone or with oats, gained at a faster rate than steers fed oaten hay, alone or with oats. As the level of grain in the rations increased, liveweight gains of the steers increased. The steers given the highest levels of grain (1 1/2 per cent liveweight and ad libitum) produced the most acceptable carcases as assessed by fat cover and the physical properties of the lean. As the level of grain was increased, the conversion of feed to liveweight gain was improved and the time required to reach the desired weight was reduced. Rations of barley, wheat or oats had similar effects on growth rate and carcass composition when they were fed at a rate equal to one per cent of the liveweight of the steers per day. The NPN supplement, biuret, had little effect when fed as a supplement to oaten hay. The feeding of grain as a supplement to pasture doubled the growth rate of the steers. The carcases of steers receiving oat grain on pasture were of comparable quality and produced in a similar time to those of the fastest gaining feedlot groups. The results do not provide any evidence which would justify the practice of confining such steers in a feedlot.

Intraspecific variation inSchistosoma haematobiumfrom Algeria

1997 ◽  
Vol 71 (1) ◽  
pp. 29-34 ◽  
Author(s):  
N. Kechemir ◽  
A. Théron
Keyword(s):  
Growth Rate ◽  
Comparative Analysis ◽  
Intermediate Host ◽  
Schistosoma Haematobium ◽  
Snail Host ◽  
Intraspecific Polymorphism ◽  
Bulinus Truncatus ◽  
Bioclimatic Zone ◽  
Two Populations ◽  
Cercarial Emergence

AbstractA comparative analysis has been carried out between two populations ofSchistosoma haematobiumusing the same intermediate snail host,Bulinus truncatus, but originating from two distinct ecological areas of Algeria: Khemis-El-Khechna in a sub-humid mediterranean zone and Djanet in a saharan bioclimatic zone. Four parameters have been studied: the growth rate of adult worms, size and shape of the eggs, chronobiology of cercarial emergence and the compatibility with the intermediate host. Results showing divergences for all the characters studied are discussed for the origin of this intraspecific polymorphism ofS. haematobiumin Algeria.

The comparative productivity of five ewe breeds. 1. Lamb growth and survival

1980 ◽  
Vol 20 (104) ◽  
pp. 272 ◽  
Author(s):  
KD Atkins
Keyword(s):  
Growth Rate ◽  
Birth Weight ◽  
Survival Rate ◽  
Agricultural Research ◽  
Research Station ◽  
Dual Purpose ◽  
Growth And Survival ◽  
Body Weights ◽  
Formed Part ◽  
Lamb Growth

An experiment was conducted at Temora Agricultural Research Station to compare birth weights, growth rates to weaning, and survival of lambs from five breeds. These data formed part of a larger study comparing the productivity of these breeds as possible dual-purpose ewe breeds. The breeds were a Border Leicester X Merino fixed halfbred (BLM), Corriedale, Polwarth, and a South Australian strong wool (S.A. Merino) and a medium wool Peppin strain of Merino. The descending order of ranking of the breeds on birth weight and growth rate to weaning was BLM, Corriedale, S.A. Merino, Polwarth and Peppin Merino. A significant breed x year interaction in pre-weaning growth rate was recorded, since the absolute differences between breeds increased as the overall mean growth rate increased. Breed means for the survival rate of single-born lambs ranged from 80.7 to 86.4 lambs weaned per 100 lambs born and they were not significantly different from each other. The mean survival rate of multipleborn lambs from the S.A. Merino and Polwarth breeds were 65.0 and 69.5 respectively, and these were significantly lower than the survival rate of multiples from the other breeds (76.8 to 80.4). Within breeds, birth weight was found to be positively related to survival at low birth weights but negatively related to survival at high body weights

scholarly journals Dividend Aristocrats – A Comparative Analysis of Polish and American Dividend Companies During the Period of 2009–2017

2020 ◽  
Vol 20 (1) ◽  
pp. 190-205
Author(s):  
Bartłomiej Jabłoński
Keyword(s):  
Growth Rate ◽  
Comparative Analysis ◽  
Standard Deviation ◽  
Stock Exchange ◽  
Rate Of Return ◽  
Average Annual Rate ◽  
Dividend Payments ◽  
Statistical Measures ◽  
Similarities And Differences ◽  
Dividend Growth

AbstractResearch background: This article describes the issue of dividend companies that are components of the WIG index and S&P 500 during the period 2009–2017.Purpose: The aim of the study was to identify similarities and differences in dividend payments by issuers during the period 2009–2017.Research methodology: It describes the assessment of investments in companies on the basis of the continuity and variability of dividends paid (taking into account the rate of dividend growth and the cumulated rate of dividends, statistical measures – median and standard deviation), as well as the comparison of issuers from the Polish and US stock exchange.Results: The results of the study confirm the existence of differences in dividend pay-outs by companies listed on both exchanges.Novelty: First of all, Polish dividend companies are characterised by a higher average annual dividend growth rate and an average annual rate of return. What is more important, the average accumulated dividend (as well as its median) of companies from the WIG index is higher than the same group of companies belonging not only to the S&P 500 index companies, but also to American dividend aristocrats.

scholarly journals Pasture damage and regrowth from cattle treading

2000 ◽  
pp. 155-160 ◽  
Author(s):  
T.N. Pande ◽  
I. Valentine ◽  
K. Betteridge ◽  
A. Mackay ◽  
D. Horne
Keyword(s):  
Growth Rate ◽  
Leaf Area Index ◽  
Leaf Area ◽  
Canopy Cover ◽  
Control Treatment ◽  
Research Station ◽  
Area Index ◽  
Hill Country ◽  
Grazed Pasture ◽  
Tiller Density

Two experiments were conducted to describe the damage and regrowth of pasture after a single, severe cattle treading event during winter. One experiment was conducted on hill country at AgResearch's Ballantrae Hill Country Research Station, and the other on the No. 4 Dairy Unit at Massey University. Herbage growth rate, canopy cover, tiller density and leaf area index were studied and compared in grazed, cattle-trodden and untrodden (control) pastures. At Ballantrae, the control treatment was sheep-grazed pasture, and at Massey University, it was cattle-grazed, but untrodden pasture under the electric fence. A single cattle treading event on winter-wet soils reduced hill pasture growth rates in spring to 11 kg DM/ha/day compared to 18 kg DM/ha/day in undamaged pasture on slopes, and to 21 kg DM/ ha/day compared to 39 kg DM/ha/day on tracks. Spring dairy pasture growth rate to 7 weeks after treading was 33 kg DM/ha/day compared to 51 kg DM/ha/day in undamaged pasture. Damage reduced canopy cover to 60% on hill pasture tracks and to 43% in dairy pasture, compared to covers of 95% and 90% in undamaged pastures, respectively. It was concluded that the low spring herbage growth rate following a single, severe winter treading of pasture on wet soil was due mainly to significantly reduced tiller numbers, and a decrease in leaf area index and canopy cover. Treading had no significant effect on the size of individual tillers. Keywords: cattle treading, hill country, pasture, pugging

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