Norges fiskeri- og kysthistorie Bind V: Over den leiken ville han rå – Norsk havbruksnærings historie [The game for which he wanted to master: the history of Norwegian fish farming]

This study was conducted to evaluate the reproductive performance of females of Oreochromis niloticus originating from a strain of distant origin and extensively exploited in fish farming (Nyakabera strain) and a local strain recently removed from the natural environment (Lac Kivu strain). The experiment was carried out in triplicate with fry of 4.9 to 6.3 g placed in earthen ponds for a period of 6 months, at the Nyakabera fish station in South Kivu, Democratic Republic of Congo. The comparison of the two strains focused on the size of the first sexual maturity, gonado-somatic ratio, fecundity, egg diameter and condition factor. The results showed that under similar managed rearing conditions, the Nyakabera strain reaches sexual maturity earlier and is characterized by a higher gonado-somatic ratio and higher relative fertility, but a worse condition compared to the Lac Kivu strain. These differences, which indicate a better reproductive success of the Nyakabera strain, are related to the origin and the history of domestication, which are just as different from these two strains.

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Biological stations and the study of marine life: Umberto D'Ancona and the Hydrobiological Station of Chioggia (1940–1964)

ICES Journal of Marine Science ◽

10.1093/icesjms/fsv209 ◽

2015 ◽

Vol 73 (5) ◽

pp. 1447-1457 ◽

Cited By ~ 3

Author(s):

Elena Canadelli

Keyword(s):

Fishery Management ◽

Marine Biology ◽

Aquatic Organisms ◽

Fish Farming ◽

Commercial Fish ◽

Theory Of Evolution ◽

Marine Life ◽

Venetian Lagoon ◽

History Of ◽

Set Up

Abstract Marine zoological stations played an important role in the history of biology and the study of marine life. From the 1870s onward, a large number of biological stations were founded across Europe from Naples to Bergen. In the light of the new theory of evolution and the emerging discipline of ecology, it becomes increasingly necessary for biologists to study nature in the field. Beginning in the second half of the 19th century, much of the research on aquatic organisms was conducted at such stations. The aquatic environment appeared to be particularly suitable for research on the theory of evolution, on embryology, physiology, anatomy, and organism–environment interactions. Marine stations also served as sites for the study of fishery management and fish farming and aquaculture. The hydrobiological station located in the town of Chioggia on the Venetian Lagoon represents one of the less well-known examples of such research centres. It was set up in 1940 by the Italian zoologist Umberto D'Ancona of the University of Padua (1896–1964), who modelled it on already existing zoology, hydrobiology, and fish farming stations in Italy and abroad. Their research was conducted on the ecosystems of the Venetian Lagoon and the northern part of the Adriatic Sea, the natural stocks of valuable commercial fish species, and the reproductive biology of various teleosts. This essay will review the history of the Hydrobiological Station in Chioggia during the period 1940–1964 when it was directed by D'Ancona, its work in the fields of marine biology and fishery, and its ties with other marine stations in Italy and abroad.

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Veterinary Medicine and the Use of Medicinal Plants

Scientific Messenger of LNU of Veterinary Medicine and Biotechnology ◽

10.32718/nvlvet9422 ◽

2019 ◽

Vol 21 (94) ◽

pp. 121-126

Author(s):

I. Salamon ◽

M. Hrytsyna

Keyword(s):

Veterinary Medicine ◽

Medicinal Plants ◽

Middle Ages ◽

Broiler Chickens ◽

Body Weight Gain ◽

Fish Farming ◽

Feed Additives ◽

Biologically Active ◽

Herbal Treatment ◽

History Of

The article deals with the history of development of veterinary medicine in the Eastern Europe (Austria-Hungary) and Galicia from the Middle Ages to our days. Particular attention is paid to the history of use of plants in veterinary practice. Herbal treatment of animals in the past times was described in Martin Cech's book The book of Horses Treatment (Budapest, 1797). An analysis of modern literature was conducted with the issue of use of plants in veterinary medicine. Basically, it is the use of phytodactyls for feed as an alternative to antibiotics, dyes or other synthetic medicines in pig breeding, poultry farming, fish farming, dairy cattle-breeding and for reducing the bacteriological contamination of food, feed additives and veterinary drugs as well. These actions ensure the ecological safety of livestock products. In modern veterinary plants and their extracts are used as phytodactyls for feed, in particular: Silybum marianum, Echinacea purpurea, Tagetes erecta that increase chickens’ and piglets’ body weight gain, decrease level of diseases and improve organoleptic indicators of carcasses of broiler chickens. Due to the content of various biologically active substances herbal preparations have antimicrobial, immunostimulating, general health improving effect on an animal’s organism. Phytopreparations are used to improve digestion, enhance immunity, growth and reduce morbidity of animals. Phytopreparations are used as bactericidal medications for prevention and treatment of infectious diseases. With prophylactic and curative aim are used phytodactylos, such as “Fitovet”, “Aciprogentin” і “Progentin”, “Species chamomillae SPOFA”. Galega orientalis, Origanum vulgare, species of the genus Philadelphus and other medical plants that contain a huge amount of flavonoids and essential oils. They have bactericidal properties and can be used for prophylactic and treatment of diseases and air disinfections on farms. Unfortunately, we still do not know much about the herbal treatment of animals. The modern veterinarian does not have enough knowledge about the possibilities of using medicinal plants in veterinary medicine.

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Hypothermic storage of sturgeon sperm: methodology and ongoing history

Rybovodstvo i rybnoe hozjajstvo (Fish Breeding and Fisheries) ◽

10.33920/sel-09-2008-06 ◽

2020 ◽

pp. 64-82

Author(s):

Dmitry Isaev

Keyword(s):

Genetic Material ◽

Animal Husbandry ◽

Fish Farming ◽

Human Sperm ◽

Short Review ◽

Complete Replacement ◽

History Of ◽

Methodological Approaches ◽

Hypothermic Storage ◽

Species Specific

Hypothermic storage of sperm in a liquid state without freezing, without the use of either liquid nitrogen or dry ice as well as special cryological equipment is an interesting and attractive research line in reproductive biology in terms of practical application. Historically, hypothermia is the very first approach to the preservation of genetic material, but, despite this, the methods of hypothermic storage of gametes and embryos have not received proper development and application in animal husbandry, giving way to cryopreservation. One of the main reasons for this is the high species-specific resistance to cold storage. The technologies for hypothermic storage of sperm existing today and recommended for use in fish farming and in sturgeon breeding in particular are still not effective enough and require further improvement. This short review outlines the history of the development of technologies for the hypothermic storage of sturgeon sperm, considers a number of methodological approaches, concepts and ideas behind these developments. The male reproductive system in sturgeons, the structure and physiology of spermatozoa have a number of features that distance them from teleost fishes, but partly relate to amphibians and higher vertebrates. This made it possible to apply to sturgeons some successful approaches and achievements in the development of methods for hypothermic storage of mammalian (mouse and human) sperm. Thus, the most effective and possibly promising approach is partial or complete replacement of seminal plasma with salt-free isotonic solutions based on sugars (oligosaccharides) and albumin. The purpose of this review is to draw the attention of fish farmers and researchers to developments and advances in hypothermic sperm storage.

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Emilio Corti's ‘Limnofauna Italica’ and the origins of limnology in Italy in comparison with the current scientific scenario

Advances in Oceanography and Limnology ◽

10.4081/aiol.2012.5333 ◽

2012 ◽

Vol 3 (2) ◽

pp. 193

Author(s):

Rosario Mosello ◽

Maria Grazia Cuoghi ◽

Diego Fontaneto ◽

Arianna Orrù ◽

Clementina Rovati

Keyword(s):

World Literature ◽

Scientific Information ◽

Fish Farming ◽

Assistant Professor ◽

Research Topics ◽

Thomson Reuters ◽

The World ◽

History Of ◽

University Museum ◽

The University

The paper discusses the relative frequency of topics of study in Italy, through the bibliography compiled by Emilio Corti, an assistant professor at the Zoology Institute of the University of Pavia, covering the period 1850–1933, compared with those obtained from the world literature from the database of Web of Knowledge by the Institute for Scientific Information (ISI) of Thomson Reuters, for the period 1945–2005. Corti's bibliography, which has never been published, is kept in the Archives of the Pavia University Museum and comprises around 5500 papers covering various aspects of hydrobiology, fish and fish farming. Altogether what emerged was a methodical, complex study, providing a wealth of information even though made up solely of bibliographic references. Today it represents a significant source of consultation for anyone interested in the history of science and zoogeography. The comparison of Corti's topics with those of the 1945–2005 period confirmed (1) an overall increase in most research topics, (2) that some research topics, especially related to human activities, increased more than the others, (3) that the studies on malaria showed a peculiar trend, and that (4) organisms-based research did not diminish its importance through time.

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Sheep and goat farming in Imo state Southeast Nigeria: A traditional vocation at the verge of extinction?

Nigerian Journal of Animal Production ◽

10.51791/njap.v47i4.70 ◽

2020 ◽

Vol 47 (4) ◽

pp. 237-246

Author(s):

N. J. Anyanwu, ◽

J. O. Ogualu ◽

V. U. Odoemelam, ◽

G. A. Kalio, ◽

I. I. Ekpe

Keyword(s):

Urban Areas ◽

Production Systems ◽

Fish Farming ◽

Farming System ◽

Policy Framework ◽

Poultry Production ◽

Imo State ◽

The People ◽

History Of ◽

Goat Farming

Since prehistoric times, sheep and goat farming has been an integral part of the farming system of the people of South east Nigeria. This study investigated the current state of sheep and goat farming amongst households in Imo State south eastern Nigeria. A total of one hundred and fifty (150) structured questionnaires were distributed to farmers randomly selected from three Local Government Areas (LGAs) in Imo state namely, Oru West, Ahiazu Mbaise and Ezinihitte Mbaise to determine the socio-economic characteristics, production systems, breeding and reproduction, constraints and strategies for economic improvement in a focus group interview. Only 89 farmers were available for interview. The results revealed significant decline in sheep and goat farming amongst the households across four generations within the households interviewed. Lack of interest due to poor policy framework, low productivity of existing breeds, difficulty in feed supply and high cost of breeding stock was identified as constraints of sheep and goat production in thiese areas. It was also observed that older people were more directly involved in sheep and goat farming than youths. 59.6% of the farmers were females, and 31-50% of the farmers were between the ages of 31 and 50 years. Farming was the most common occupation amongst the households while trading was the next. Results also showed that 76.4% of the communities had history of sheep and goat keeping whereas 73% of the total families interviewed had a history of sheep and goat keeping. It was also observed that 33.7% of households were involved in poultry enterprise and 25.3% involved in fish farming. Only 4.8% engaged in sheep and goat farming. Results obtained also revealed that 48.3% of the identified sheep and goat farmers kept breeds of sheep and goat from northern Nigeria while 40.4% maintained the west African dwarf breed. 34% of respondents believed that access to grants and credit facilities, 25 % believed provision of land in urban areas, while 21% believed improvement in small ruminant feed technology, would improve production. Lambing and kidding was mostly twice a year (48.3%). Breeding was mostly observed to be uncontrolled (51.7%). Also, the results showed that, 59.6% of the farmers were willing to pay for veterinary services. The most important diseases within these areas were worms, ecto-parasites and peste des petits ruminants (PPR). It can be inferred from the study that farmers within the region appear to pay greater emphasis on poultry production and fish farming to the detriment of smallholder sheep and goat farming which could be attributed to poor knowledge of sheep and goat farming technologies resulting to low productivity.

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A history of pathology and health control implementation in French fish farming

Cahiers Agricultures ◽

10.1684/agr.2014.0681 ◽

2014 ◽

Vol 23 (1) ◽

pp. 47-52

Author(s):

Pierre de Kinkelin-Pelletan ◽

Christian Michel

Keyword(s):

Fish Farming ◽

Health Control ◽

History Of Pathology ◽

History Of ◽

Control Implementation

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The Black Sea kalkan and the turbot, its closest relative

10.21072/978-5-6044865-6-6 ◽

2021 ◽

Author(s):

A.N. Khanaychenko ◽

◽

V.E. Giragosov ◽

Keyword(s):

Black Sea ◽

Genetic Research ◽

Fish Farming ◽

Field Studies ◽

Scophthalmus Maximus ◽

The Black Sea ◽

Research Experience ◽

Commercial Fish ◽

History Of ◽

Turbot Scophthalmus Maximus

This book resumes many years of research experience of the authors and their colleagues, as well as numerous European and Chinese experimental and field studies on the developmental biology and physiology of valuable commercial fish, the Black Sea kalkan (Scophthalmus maeoticus) and the Atlantic turbot (Scophthalmus maximus), closest relatives and, according to modern genetic research, presumably, one species. The history of formation of currently powerful industrial turbot aquaculture presented in this book is based on the analysis of numerous scientific and applied research on turbot mariculture and economic features of formation of its European, in particular, Spanish and Chinese clusters. Recommended for researchers – biologists and biotechnologists, university professors, students of biological and biotechnology specialties, specialists in aquaculture, fish farming, ecology, as well as for a wider range of readers, managers, economists and operators of aquaculture enterprises.

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