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Artificial spawning of carp

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Exercise 1
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Exercise 2
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The course of artificial spawning

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Exercise 3
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RAS - Recirculating aquaculture systems

Hello, I would like to show you our intensive breedingm94edd8de3d8c10ab_1528275689413_0intensive breeding based on the water recirculationm94edd8de3d8c10ab_1528275726670_0water recirculation system. Recirculating aquaculture systems are fish farming in water, which circulates completely in a closed cyclem94edd8de3d8c10ab_1528275816187_0closed cycle.
- How is the production water purified?
- Multiple use of the same water in the production process is possible due to the use of efficient filtrationm94edd8de3d8c10ab_1528276030165_0filtration and other methods for water treatmentm94edd8de3d8c10ab_1528276177500_0water treatment.
Water flowing out of the production tanks is cleaned in mechanicalm94edd8de3d8c10ab_1528276348344_0mechanical and biological filtersm94edd8de3d8c10ab_1528276362596_0biological filters. Before the water reaches the fish tanks again, harmful gases are removed. The water must be degassedm94edd8de3d8c10ab_1528276606342_0degassed and oxygenated with pure oxygenm94edd8de3d8c10ab_1528276619575_0oxygenated with pure oxygen. Since the fish growth rate is directly related to the water temperature, it is essential to maintain the optimal water temperature. Heat exchangersm94edd8de3d8c10ab_1528276734211_0Heat exchangers with a thermoregulator are used for this.
- Are there any fish health problems?
- Water used in production comes from deep wells. The system of closed water circulation and „cutting off” from the external environment eliminates viral or parasitic diseases. We have constant veterinary supervisionm94edd8de3d8c10ab_1528277036248_0veterinary supervision. We use preventivem94edd8de3d8c10ab_1528277096110_0preventive and curative treatmentsm94edd8de3d8c10ab_1528277096110_0treatments. We carry out fish baths and disinfection of devicesm94edd8de3d8c10ab_1528277230637_0disinfection of devices. The medicines are given in the feed as prescribed by the veterinarian. The water circulating in the circulation is continuously disinfected using ultraviolet lamps.
- What are the advantages and what are the disadvantages of the RAS system?
- The biggest advantage of RAS is the possibility of full health control of fishm94edd8de3d8c10ab_1528277251601_0health control of fish and the possibility of very precise determination of food rations. It contributes to a very fast growth rate. The disadvantage of the system is the high degree of technological complexity. The recirculation system is expensive to build and maintain.
However, despite these drawbacks, this is the future of aquaculture.

Exercise 4
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Trout’s production cycle

- Good morning, soon we will conduct an artificial spawning of rainbow trout. After spawning, we will put eggs in incubation equipment. You need to control the flow of water and apply preventive baths.
- How long will incubation last for eggs?
- The length of incubation depends on the water temperature and is around 340 degree‑daysm94edd8de3d8c10ab_1528281794242_0degree‑days. This means that if the water temperature remains at 10°C, the incubation period will be 34 days. Attention should be paid to the moment of egg fertilisationm94edd8de3d8c10ab_1528281977789_0moment of egg fertilisation. After fertilisation, the eggs will become less sensitive.
- When should I start feeding the fish?
- As the brood begins to hatch, it does not take food. It feeds on the yolk sacm94edd8de3d8c10ab_1528281993188_0yolk sac. Only after resorption of 70% of the bag, the brood fish swim under the surface and fills the swim bladderm94edd8de3d8c10ab_1528282006237_0swim bladder. This is the moment when you should start feeding artificial feed.
- How long does the brood fish stay in the nursery pondsm94edd8de3d8c10ab_1528282052487_0nursery ponds?
- About 4 weeks until it reaches a mass of about 1 gram. Then we will move it to a pond or a rotation tankm94edd8de3d8c10ab_1528282086607_0rotation tank. It will stay there until autumn. In the autumn, we will get the fry of about 10‑20 grams.
- What stockingsm94edd8de3d8c10ab_1528282191005_0stockings are we using in the trout pondsm94edd8de3d8c10ab_1528282148458_0trout ponds?
- Trout production is an intensive production. The production volume depends on the oxygen content in the incoming water. It also depends on the oxygen consumption of 1 kg of fishm94edd8de3d8c10ab_1528282519630_0oxygen consumption of 1 kg of fish. In addition, we oxygenate the ponds with pure oxygen to increase the available oxygen content in the waterm94edd8de3d8c10ab_1528282500034_0available oxygen content in the water.
Trout is a coldwater fishm94edd8de3d8c10ab_1528282650804_0coldwater fish and continues to grow in winter. So you have to feed it according to food dosesm94edd8de3d8c10ab_1528282672875_0food doses developed by feed manufacturers. In the spring we will get fry weighing 50 grams. The further fattening of troutm94edd8de3d8c10ab_1528282694217_0fattening of trout consists in feeding, sorting and controlling environmental conditions. After 3‑4 months we will get the first commercial fishm94edd8de3d8c10ab_1528282712959_0commercial fish. The minimum weight of trout for sale is 200‑250 g.

Exercise 5
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Care treatments in the hatchery

HANDLING INSTRUCTIONS FOR EGGS
Eggs disinfectionm94edd8de3d8c10ab_1528288578285_0Eggs disinfection.
Spawn from our hatchery is disinfected with a iodophor solution at least 3 times before sale. We can use saline solution or hydrogen peroxide for disinfection. The use of chemical substancesm94edd8de3d8c10ab_1528288950431_0chemical substances, such as copper sulphate or chloramine is not recommended. They have a negative impact on biological filtersm94edd8de3d8c10ab_1528276362596_0biological filters.
Preventive baths
Preventive baths prevent molding and sticking together of eggsm94edd8de3d8c10ab_1528288962849_0molding and sticking together of eggs and limit the possibility of bacterial infectionsm94edd8de3d8c10ab_1528289021413_0bacterial infections of eggs and brood fish.
Starting from the next day after obtaining the spawn and placing it in incubation devices, carry out preventative baths every day. Work with the veterinarian and local authorities to use a proper treatment methodm94edd8de3d8c10ab_1528289148660_0treatment method if needed.
Water disinfectionm94edd8de3d8c10ab_1528289204093_0Water disinfection
Water flowing in a closed cycle needs to disinfected using UV radiation or ozonationm94edd8de3d8c10ab_1528289220581_0ozonation. Ultraviolet radiationm94edd8de3d8c10ab_1528289236768_0Ultraviolet radiation is the most effective when the UV lamp is placed in the flowing water. The disadvantage of ozonation is the negative impact on human health. When the nitrogen level in the water is too high, there are gas bubbles. This leads to high mortality.
Caring for eggsm94edd8de3d8c10ab_1528289331170_0Caring for eggs
Through the whole incubation periodm94edd8de3d8c10ab_1528289349753_0incubation period of the eggs to the moment of hatching, the hygiene of hatching apparatusm94edd8de3d8c10ab_1528289371111_0hygiene of hatching apparatus needs to be maintained. The care consists in removing dead eggsm94edd8de3d8c10ab_1528289390989_0removing dead eggs and brood fish with proper tools. Frequent control of proper water flow through incubation devices and its oxygen saturation is important.
Caring for brood fishm94edd8de3d8c10ab_1528289409287_0Caring for brood fish
Start to feed them when 50% of brood fish will emerge or when 80% will absorb the yolk sac. Use high‑quality starters administered at the right time, as those are critical factors for the growth of small fish. Feed them often manually or using automatic feedersm94edd8de3d8c10ab_1528289428175_0automatic feeders.

Exercise 6
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Breeding improvement of fish

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Exercise 7
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Pictures

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Game

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Dictionary

mcmmhdd16f51376978c1_1498134cmmhdd_895
acceleration of maturity əkˌsel.əˈreɪ.ʃən əv məˈtʃʊə.rə.ti
acceleration of maturity əkˌsel.əˈreɪ.ʃən əv məˈtʃʊə.rə.ti

przyspieszenie dojrzałości

mihggcg16f51376978c1_1498134ihggcg_952
anaesthetic ˌæn.əsˈθet.ɪk
anaesthetic ˌæn.əsˈθet.ɪk

anestetyk

m87ehb916f51376978c1_149813487ehb9_859
artificial spawning ˌɑː.tɪˈfɪʃ.əl ˈspɔː.nɪŋ
artificial spawning ˌɑː.tɪˈfɪʃ.əl ˈspɔː.nɪŋ

sztuczne tarło

mjmbnf616f51376978c1_1498134jmbnf6_181
automatic feeder, automatic feeders ˌɔː.təˈmæt.ɪk ˈfiː.dər
automatic feeder, automatic feeders ˌɔː.təˈmæt.ɪk ˈfiː.dər

karmniki automatyczne

mcbhbjg16f51376978c1_1498134cbhbjg_126
available oxygen content in the water əˈveɪ.lə.bəl ˈɒk.sɪ.dʒən kənˈtent ɪn ðə ˈwɔː.tər
available oxygen content in the water əˈveɪ.lə.bəl ˈɒk.sɪ.dʒən kənˈtent ɪn ðə ˈwɔː.tər

zawartość tlenu w wodzie

m5iab9716f51376978c1_14981345iab97_584
bacterial infection, bacterial infections bækˈtɪə.ri.əl ɪnˈfek.ʃən
bacterial infection, bacterial infections bækˈtɪə.ri.əl ɪnˈfek.ʃən

zakażenia bakteryjne

mdhhj5g16f51376978c1_1498134dhhj5g_297
biological filter, biological filters ˌbaɪ.əˈlɒdʒ.ɪ.kəl ˈfɪl.tər
biological filter, biological filters ˌbaɪ.əˈlɒdʒ.ɪ.kəl ˈfɪl.tər

filtry biologiczne

miin4nn16f51376978c1_1498134iin4nn_413
breeding improvement of fish ˈbriː.dɪŋ ɪmˈpruːv.mənt əv fɪʃ
breeding improvement of fish ˈbriː.dɪŋ ɪmˈpruːv.mənt əv fɪʃ

doskonalenie hodowlane ryb

mmccecc16f51376978c1_1498134mccecc_406
brood fish hatching bruːd fɪʃ hætʃ
brood fish hatching bruːd fɪʃ hætʃ

wykluwanie się wylęgu

maadke916f51376978c1_1498134aadke9_369
caring for brood fish ˈkeə.rɪŋ fər bruːd eɡ
caring for brood fish ˈkeə.rɪŋ fər bruːd eɡ

pielęgnacja wylęgu

m78debf16f51376978c1_149813478debf_797
caring for eggs ˈkeə.rɪŋ fər eɡ
caring for eggs ˈkeə.rɪŋ fər eɡ

pielęgnacja ikry

m4ggmd516f51376978c1_14981344ggmd5_109
carp variety kɑːp vəˈraɪə.ti
carp variety kɑːp vəˈraɪə.ti

odmiany karpia

mamhm2j16f51376978c1_1498134amhm2j_936
chemical substance, chemical substances ˈkem.ɪ.kəl ˈsʌb.stəns
chemical substance, chemical substances ˈkem.ɪ.kəl ˈsʌb.stəns

substancje chemiczne

m2jcfnf16f51376978c1_14981342jcfnf_905
closed cycle kləʊzd ˈsaɪ.kəl
closed cycle kləʊzd ˈsaɪ.kəl

obieg zamknięty

mb3fjnb16f51376978c1_1498134b3fjnb_697
coldwater fish kəʊldˈwɔː.tər fɪʃ
coldwater fish kəʊldˈwɔː.tər fɪʃ

ryba zimnolubna

mgnnjaf16f51376978c1_1498134gnnjaf_584
collecting gametes kəˈlek.tɪŋ ˈɡæm.iːt
collecting gametes kəˈlek.tɪŋ ˈɡæm.iːt

pobieranie gamet

mgc9egi16f51376978c1_1498134gc9egi_641
commercial fish kəˈmɜː.ʃəl fɪʃ
commercial fish kəˈmɜː.ʃəl fɪʃ

ryby towarowe

ma3fign16f51376978c1_1498134a3fign_903
controlled breeding kənˈtrəʊl ˈbriː.dɪŋ
controlled breeding kənˈtrəʊl ˈbriː.dɪŋ

rozród kontrolowany

mimdffi16f51376978c1_1498134imdffi_460
date of breeding deɪt əv ˈbriː.dɪŋ
date of breeding deɪt əv ˈbriː.dɪŋ

termin rozrodu

m27hgin16f51376978c1_149813427hgin_546
degassed diːˈɡas
degassed diːˈɡas

odgazowanie wody

mjgnani16f51376978c1_1498134jgnani_992
degree‑days dɪˈɡriː‑deɪ
degree‑days dɪˈɡriː‑deɪ

stopniodni

mefke4k16f51376978c1_1498134efke4k_378
disinfection of devices ˌdɪsɪnˈfɛkʃn əv dɪˈvaɪs
disinfection of devices ˌdɪsɪnˈfɛkʃn əv dɪˈvaɪs

wymienniki ciepła

m7bdmhb16f51376978c1_14981347bdmhb_493
dominant genes ˈdɒm.ɪ.nənt dʒiːn
dominant genes ˈdɒm.ɪ.nənt dʒiːn

geny dominujące

mhikd3j16f51376978c1_1498134hikd3j_220
egg fertilisation eɡ ˌfɜː.tɪ.laɪˈzeɪ.ʃən
egg fertilisation eɡ ˌfɜː.tɪ.laɪˈzeɪ.ʃən

zaoczkowanie ikry

mjn9mac16f51376978c1_1498134jn9mac_965
eggs disinfection eɡ ˌdɪsɪnˈfɛkʃn
eggs disinfection eɡ ˌdɪsɪnˈfɛkʃn

Dezynfekcja ikry

m6gdkdk16f51376978c1_14981346gdkdk_993
fattening of trout ˈfæt.ən.ɪŋ əv traʊt
fattening of trout ˈfæt.ən.ɪŋ əv traʊt

tucz pstrągów

mfhg6n416f51376978c1_1498134fhg6n4_232
female spawner, female spawners ˈfiː.meɪl spɔːn
female spawner, female spawners ˈfiː.meɪl spɔːn

ikrzyce

mcchaja16f51376978c1_1498134cchaja_685
fertilisation of eggs ˌfɜː.tɪ.laɪˈzeɪ.ʃən əv eɡ
fertilisation of eggs ˌfɜː.tɪ.laɪˈzeɪ.ʃən əv eɡ

zapłodnienie ikry

mgbin6316f51376978c1_1498134gbin63_406
filtration fɪlˈtreɪ.ʃən
filtration fɪlˈtreɪ.ʃən

filtracja wody

mf4icbe16f51376978c1_1498134f4icbe_776
food dose, food doses fuːd dəʊs
food dose, food doses fuːd dəʊs

dawki pokarmowe

mnmagmk16f51376978c1_1498134nmagmk_561
gametes ˈɡæm.iːts
gametes ˈɡæm.iːts

gamety

mn7a8bb16f51376978c1_1498134n7a8bb_908
genetic information dʒəˈnet.ɪk ˌɪn.fəˈmeɪ.ʃən
genetic information dʒəˈnet.ɪk ˌɪn.fəˈmeɪ.ʃən

informacja genetyczna

mmab59i16f51376978c1_1498134mab59i_986
genotype ˈdʒen.ə.taɪp
genotype ˈdʒen.ə.taɪp

genotyp

mjdjge516f51376978c1_1498134jdjge5_354
gonad, gonads ˈɡəʊ.næd
gonad, gonads ˈɡəʊ.næd

gonady

meghnf816f51376978c1_1498134eghnf8_344
health control of fish helθ kənˈtrəʊl əv fɪʃ
health control of fish helθ kənˈtrəʊl əv fɪʃ

kontrola zdrowotności ryb

m48ajib16f51376978c1_149813448ajib_511
heat exchanger, heat exchangers hiːt ɪksˈtʃeɪndʒ
heat exchanger, heat exchangers hiːt ɪksˈtʃeɪndʒ

zabiegi profilaktyczne

mkb7k3d16f51376978c1_1498134kb7k3d_275
heterosis ˌhɛtəˈrəʊsɪs
heterosis ˌhɛtəˈrəʊsɪs

heterozja

mbb8cmc16f51376978c1_1498134bb8cmc_153
hormonal agent, hormonal agents hɔːˈməʊ.nəl ˈeɪ.dʒənt
hormonal agent, hormonal agents hɔːˈməʊ.nəl ˈeɪ.dʒənt

środki hormonalne

mmf9kdi16f51376978c1_1498134mf9kdi_401
hormone, hormones ˈhɔː.məʊn
hormone, hormones ˈhɔː.məʊn

hormony

mgdjjcb16f51376978c1_1498134gdjjcb_787
hybridisation ˌhaɪ.brɪ.daɪˈzeɪ.ʃən
hybridisation ˌhaɪ.brɪ.daɪˈzeɪ.ʃən

hybrydyzacja

m7c5kj316f51376978c1_14981347c5kj3_584
hygiene of hatching apparatus ˈhaɪ.dʒiːn əv hætʃ ˌæp.əˈreɪ.təs
hygiene of hatching apparatus ˈhaɪ.dʒiːn əv hætʃ ˌæp.əˈreɪ.təs

higiena aparatów wylęgowych

me4ma2k16f51376978c1_1498134e4ma2k_304
hypophysis hʌɪˈpɒfɪsɪs
hypophysis hʌɪˈpɒfɪsɪs

hypofizacja

mcgiifh16f51376978c1_1498134cgiifh_906
inbreeding ˌɪnˈbriː.dɪŋ
inbreeding ˌɪnˈbriː.dɪŋ

inbred

mm2aan716f51376978c1_1498134m2aan7_385
incubation apparatus ˌɪŋ.kjəˈbeɪ.ʃən ˌæp.əˈreɪ.təs
incubation apparatus ˌɪŋ.kjəˈbeɪ.ʃən ˌæp.əˈreɪ.təs

aparaty inkubacyjne

mame68316f51376978c1_1498134ame683_630
incubation of eggs ˈɪŋ.kjə.beɪt əv eɡ
incubation of eggs ˈɪŋ.kjə.beɪt əv eɡ

inkubacja ikry

mjncnfc16f51376978c1_1498134jncnfc_804
incubation period ˌɪŋ.kjəˈbeɪ.ʃən ˈpɪə.ri.əd
incubation period ˌɪŋ.kjəˈbeɪ.ʃən ˈpɪə.ri.əd

okres inkubacji

mchh22n16f51376978c1_1498134chh22n_949
incubation time ˌɪŋ.kjəˈbeɪ.ʃən taɪm
incubation time ˌɪŋ.kjəˈbeɪ.ʃən taɪm

czas inkubacji

m36knkf16f51376978c1_149813436knkf_435
intensive breeding ɪnˈten.sɪv ˈbriː.dɪŋ
intensive breeding ɪnˈten.sɪv ˈbriː.dɪŋ

intensywna hodowla

mjm5bkm16f51376978c1_1498134jm5bkm_689
intensive production ɪnˈten.sɪv prəˈdʌk.ʃən
intensive production ɪnˈten.sɪv prəˈdʌk.ʃən

produkcja intensywna

mdhifef16f51376978c1_1498134dhifef_512
mechanical filter, mechanical filters məˈkæn.ɪ.kəl ˈfɪl.tər
mechanical filter, mechanical filters məˈkæn.ɪ.kəl ˈfɪl.tər

filtry mechaniczne

mhd4gke16f51376978c1_1498134hd4gke_681
milt mɪlt
milt mɪlt

mlecz

mkf6cfn16f51376978c1_1498134kf6cfn_917
milter, milters ˈmɪltə
milter, milters ˈmɪltə

mleczaki

mbnd4kc16f51376978c1_1498134bnd4kc_580
molding of eggs ˈməʊl.dɪŋ əv eɡ
molding of eggs ˈməʊl.dɪŋ əv eɡ

pleśnienie ikry

mdgfi2j16f51376978c1_1498134dgfi2j_725
number of chromosomes ˈnʌm.bər əv ˈkrəʊ.mə.səʊm
number of chromosomes ˈnʌm.bər əv ˈkrəʊ.mə.səʊm

liczba chromosomów

m3chegk16f51376978c1_14981343chegk_911
nursery pond, nursery ponds ˈnɜː.sər.i pɒnd
nursery pond, nursery ponds ˈnɜː.sər.i pɒnd

podchowalniki

mmaaejk16f51376978c1_1498134maaejk_855
oxygen consumption ˈɒk.sɪ.dʒən kənˈsʌmp.ʃən
oxygen consumption ˈɒk.sɪ.dʒən kənˈsʌmp.ʃən

zużycie tlenu

mni9me316f51376978c1_1498134ni9me3_594
oxygenation ˌɒk.sɪ.dʒənˈeɪ.ʃən
oxygenation ˌɒk.sɪ.dʒənˈeɪ.ʃən

natlenienie

ma86cdh16f51376978c1_1498134a86cdh_359
ozonation ˌəʊzəʊˈneɪʃn
ozonation ˌəʊzəʊˈneɪʃn

ozonowanie

ma34i8i16f51376978c1_1498134a34i8i_673
parental generation pəˈren.təl ˌdʒen.əˈreɪ.ʃən
parental generation pəˈren.təl ˌdʒen.əˈreɪ.ʃən

pokolenie rodzicielskie

mejae6k16f51376978c1_1498134ejae6k_240
pituitary gland pɪˈtʃuː.ɪ.tər.i ˌɡlænd
pituitary gland pɪˈtʃuː.ɪ.tər.i ˌɡlænd

przysadka mózgowa

m9d8maf16f51376978c1_14981349d8maf_617
preventive treatment, preventive treatments prɪˈven.tɪv ˈtriːt.mənt
preventive treatment, preventive treatments prɪˈven.tɪv ˈtriːt.mənt

dezynfekcja urządzeń

mde4i8916f51376978c1_1498134de4i89_910
recessive genes rɪˈses.ɪv dʒiːn
recessive genes rɪˈses.ɪv dʒiːn

geny recesywne

m6cbcbc16f51376978c1_14981346cbcbc_870
removing dead eggs rɪˈmuːv ded eɡ
removing dead eggs rɪˈmuːv ded eɡ

usuwanie martwych jaj

mbinb7e16f51376978c1_1498134binb7e_988
rinsing of eggs rɪnsɪŋ əv eɡz
rinsing of eggs rɪnsɪŋ əv eɡz

płukanie ikry

mdigbe916f51376978c1_1498134digbe9_528
rotation tank, rotation tanks rəʊˈteɪ.ʃən tæŋk
rotation tank, rotation tanks rəʊˈteɪ.ʃən tæŋk

baseny rotacyjne

makaidf16f51376978c1_1498134akaidf_314
spawners anaesthesia spɔːn ˌæn.əsˈθiː.zi.ə
spawners anaesthesia spɔːn ˌæn.əsˈθiː.zi.ə

usypianie tarlaków

medf6bg16f51376978c1_1498134edf6bg_194
speed of growth spiːd əv ɡrəʊθ
speed of growth spiːd əv ɡrəʊθ

tempo wzrostu

mkhejmb16f51376978c1_1498134khejmb_962
squeezing out eggs skwiːz aʊt eɡ
squeezing out eggs skwiːz aʊt eɡ

wyciskanie ikry

m2n92me16f51376978c1_14981342n92me_432
state of anaesthesia steɪt əv ˌæn.əsˈθiː.zi.ə
state of anaesthesia steɪt əv ˌæn.əsˈθiː.zi.ə

stan narkozy

mdihgje16f51376978c1_1498134dihgje_721
sticky eggs ˈstɪk.i eɡ
sticky eggs ˈstɪk.i eɡ

kleista ikra

mecbjdh16f51376978c1_1498134ecbjdh_498
stimulating dose ˈsɪm.jə.leɪt dəʊs
stimulating dose ˈsɪm.jə.leɪt dəʊs

dawka pobudzająca

mdi8cgk16f51376978c1_1498134di8cgk_130
stocking, stockings ˈstɒk.ɪŋ
stocking, stockings ˈstɒk.ɪŋ

obsady

meabfaj16f51376978c1_1498134eabfaj_170
swim bladder swɪm ˈblæd.ər
swim bladder swɪm ˈblæd.ər

pęcherz pławny

mcagek516f51376978c1_1498134cagek5_465
treatment method, treatment methods ˈtriːt.mənt ˈmeθ.əd
treatment method, treatment methods ˈtriːt.mənt ˈmeθ.əd

metoda leczenia

mfkicmh16f51376978c1_1498134fkicmh_440
triggering dose ˈtrɪɡ.ər.ɪŋ dəʊs
triggering dose ˈtrɪɡ.ər.ɪŋ dəʊs

dawka wyzwalająca

manjia816f51376978c1_1498134anjia8_767
triploids ˈtrɪplɔɪd
triploids ˈtrɪplɔɪd

triploidy

m4h3dg516f51376978c1_14981344h3dg5_974
trout pond, trout ponds traʊt pɒnd
trout pond, trout ponds traʊt pɒnd

stawy pstrągowe

md2cm3e16f51376978c1_1498134d2cm3e_239
ultraviolet radiation ˌʌl.trəˈvaɪə.lət ˌreɪ.diˈeɪ.ʃən
ultraviolet radiation ˌʌl.trəˈvaɪə.lət ˌreɪ.diˈeɪ.ʃən

promieniowanie ultrafioletowe

mi8ahdi16f51376978c1_1498134i8ahdi_569
unsticking eggs ˈʌnstɪk eɡ
unsticking eggs ˈʌnstɪk eɡ

rozklejanie ikry

mb6mmbc16f51376978c1_1498134b6mmbc_390
veterinary supervision ˈvet.ər.ɪ.nər.i ˌsuː.pəˈvɪʒ.ən
veterinary supervision ˈvet.ər.ɪ.nər.i ˌsuː.pəˈvɪʒ.ən

nadzór weterynaryjny

m7giadh16f51376978c1_14981347giadh_818
water disinfection ˈwɔː.tər ˌdɪsɪnˈfɛkʃn
water disinfection ˈwɔː.tər ˌdɪsɪnˈfɛkʃn

dezynfekcja wody

md5i8mj16f51376978c1_1498134d5i8mj_137
water recirculation ˈwɔː.tər riːsəːkjʊˈleɪʃən
water recirculation ˈwɔː.tər riːsəːkjʊˈleɪʃən

recyrkulacja wody

mcgah4j16f51376978c1_1498134cgah4j_615
water treatment ˈwɔː.tər ˈtriːt.mənt
water treatment ˈwɔː.tər ˈtriːt.mənt

uzdatnianie wody

mha35ej16f51376978c1_1498134ha35ej_328
yolk sac, yolk sacs jəʊk sæk
yolk sac, yolk sacs jəʊk sæk

woreczek żółtkowy