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1

Effects of bromocriptin on broodiness in turkeys

100%
Alkan S., Kasikci G., Bakirel T., Birler S.
Medycyna Weterynaryjna
|
2005
|
tom 61
|
nr 09
2

Correlations between the strength, amount of brood, and honey production of the honey bee colony

88%
Gabka J.
Medycyna Weterynaryjna
|
2014
|
tom 70
|
nr 12
Strong bee colonies rear more brood and produce more honey than weak colonies. The aim of the study was to determine the correlation between the strength of bee colonies, the amount of brood reared, and the amount of honey produced. Thirty bee colonies of different strength were observed. The amount of brood reared in each colony was determined one month before the beginning of the nectar flow from winter rape and the production of honey after the nectar flow period. A significant positive correlation was established between the strength of the bee colony and brood amount (r = 0.442), between colony strength and honey production (r = 0.456), and between brood amount and honey production (r = 0.568).
3

Drone brood trapping of Varroa mites - an efficient way to reduce colony infestation during honey flow

88%
Fuchs S., Schmidt-Bailey J., Berg S.
Pszczelnicze Zeszyty Naukowe
|
1998
|
tom 42
|
nr 2
4

Study on an easy method of hygienic behaviour evaluation in honey bee

75%
Olszewski K., Paleolog J.
Medycyna Weterynaryjna
|
2007
|
tom 63
|
nr 02
165-166
The aim of research was the assessent of the hygienic behaviour of worker bees. The hygienic behaviour was assessed by means of two test types: the traditional needle test and a test proposed by the authors that consisted in measuring the removal rate of cardboard pieces. The experiments were conducted over three seasons and comprised a total number of 60 colonies. It was proved that the cardboard removal test may replace the needle test in the selection process of bees resistant to brood diseases, but primarily in those bees that have a good expression of hygienic behaviour. The best test results are to be expected in tests which last for 24 hours.
5

Validation of the methods of hygienic behaviour evaluation in the honeybee

75%
Olszewski K., Borsuk G., Paleolog J., Strachecka A.
Medycyna Weterynaryjna
|
2013
|
tom 69
|
nr 12
The aim of this study was to determine which method of hygienic behaviour assessment is more reliable: the evaluation of the pierced brood removal rate or the evaluation of the freeze-killed brood removal rate. Additionally, we aimed to determine whether freeze-killed brood should be placed in colonies when defrosted or still frozen. Defrosted freeze-killed brood was removed faster within a 24 h period. The removal rates for pierced brood and frozen freeze-killed brood were similar in hygienic colonies. In non-hygienic colonies, pierced brood was removed at a significantly slower rate than frozen or defrosted freeze-killed brood. The mechanisms of removing frozen and defrosted freeze-killed brood were similar to each other and different from those observed in the case of pierced brood. The defrosting of brood prior to its introduction into colonies seems inadvisable, as it accelerates brood removal. Our results confirm the hypotheses of those researchers who believe that the frozen freeze-killed brood removal test is not always appropriate. A good solution is, therefore, to perform the frozen freeze-killed brood and pin-killed brood removal tests simultaneously. The time from the beginning of the tests to the moment 50% and 75% of dead-brood cells have been cleaned up should be assumed as the appropriate duration of the hygienic behavior evaluation tests.
6

Lead content of bees, brood and bee products from different regions of Poland

75%
Madras-Majewska B., Jasinski Z.
Journal of Apicultural Science
|
2003
|
tom 47
|
nr 2
7

The influence of development stage of brood used for rearing honeybee queens on the number of obtained queen cells

63%
Gabka J., Kaminski Z., Madras-Majewska B.
Roczniki Naukowe Polskiego Towarzystwa Zootechnicznego
|
2010
|
tom 06
|
nr 4
8

Effect of the uncapping of combs with winter food stores in early spring on the amount of brood reared in honey bee colonies

63%
Gabka J., Zajdel B.
Medycyna Weterynaryjna
|
2014
|
tom 70
|
nr 12
In many areas in Central Europe, rape culture is one of the main nectar flows for bees. The natural spring development of honey bee colonies is too late for the full utilization of nectar plants in May. It is recommended to use spring managements, which increase the amount of brood, reared in March and April, to obtain as many foragers as possible for spring flows. According to many beekeepers, uncapping of combs with winter food is a very good method of accelerating the development of bee colonies in spring. The purpose of this study was to investigate whether the uncapping of winter food affects the amount of brood reared. The research was conducted in April 2007 and 2009 in south-eastern Poland. In total, 54 honey bee colonies were investigated. Winter food was uncapped in half of the colonies, and in the other half no management was used. The comparison of development in both groups was based the measurements of brood areas. It was found that the uncapping of combs with winter food in early spring had no significant effect on the amount of brood reared in honey bee colonies.
9

Effect of the honey bee subspecies on Varroa destructor population growth and brood infestation

63%
Bak B., Wilde J., Siuda M.
Medycyna Weterynaryjna
|
2013
|
tom 69
|
nr 12
The aim of the study was to check the effect of the honey bee subspecies on Varroa destructor population growth and on brood infestation by the parasite. The studies were carried out in 2009-2010. The following five subspecies of bees were tested: Carniolan bees represented by two lines, Kortówka and Dobra; Caucasian bees of the Woźnica line; Central European bees of the Augustowska line; crossbreeds achieved by the absorptive crossing of A. m. capensis with A. m. carnica drones selected for a short post capping period (PCP), bred at the Apiculture Division in Olsztyn. The coefficient of V. destructor population growth was similar in all groups, ranging from 1.3 to 1.5. The level of infestation of broods by Varroa destructor in all groups was also similar (17.2 to 19.6%) and no statistically significant differences were noted. We conclude that the honey bee subspecies has no effect on parasite population growth.
10

Genetic versus environmental cues used in the recognition and acceptance of two honey bee species: Apis Mellifera and Apis dorsata in the same colony

63%
Woyke J., Wilde J., Wilde M.
Pszczelnicze Zeszyty Naukowe
|
2000
|
tom 44
|
nr 2
11

Studies on the behaviour of worker honey bees on the recapping of artifically decapped brood

63%
Siceanu A.
Pszczelnicze Zeszyty Naukowe
|
2000
|
tom 44
|
nr 2
12

First results of a breeding program on improvement of Varroa tolerance

63%
Buchler R.
Pszczelnicze Zeszyty Naukowe
|
1998
|
tom 42
|
nr 2
13

The calming nature of reproductory dominance of the queen in the honeybee colony (Apis mellifera L.)

51%
Lipinski Z.
Journal of Apicultural Science
|
2007
|
tom 51
|
nr 1
14

The use of sympatric Reed Warblers Acrocephalus scirpaceus and Marsh Warblers Acrocephalus palustris as breeding hosts: parasitism rates and breeding success of Common Cuckoos Cuculus canorus

51%
Sklepowicz B., Halupka L.
Acta Ornithologica
|
2009
|
tom 44
|
nr 2
We investigated the level of parasitism, rejection rates and breeding success of the Common Cuckoo Cuculus canorus parasitising two sympatric species of Acrocephalus warblers breeding in western Poland. In both hosts the frequency of Cuckoo parasitism was fairly constant throughout the breeding season. The parasitism rate (defined as the proportion of nests parasitised by the Cuckoo) was significantly higher in Reed Warblers Acrocephalus scirpaceus (12%) than in Marsh Warblers Acrocephalus palustris (4.6%). The rejection rate in Reed Warblers (7.4%) was the lowest ever reported for this species, while Marsh Warblers rejected 57.1% of Cuckoo eggs. As a result, the hatching success of the Cuckoo in Reed Warbler nests was higher than in Marsh Warbler nests (74.1% and 28.6%, respectively). The fledging success of Cuckoo chicks in the nests of the two host species was similar. Nest survival was significantly lower in parasitised nests than in non-parasitised ones. The breeding success of the Cuckoo (proportion of fledged young to the total number of eggs laid) was higher in the nests of Reed Warblers (29.6%) than in those of Marsh Warblers (7.1%), but the difference was not statistically significant. In 2001-2003 both host species were parasitised at a similar rate, but in 2004-2008 the level of parasitism dropped dramatically in Marsh Warblers. We discuss possible explanations for this phenomenon.
15

Palatability and consumption of patty-formulated pollen and pollen substitutes and their effects on honeybee colony performance

51%
Saffari A., Kevan P. G., Atkinson J. L.
Journal of Apicultural Science
|
2010
|
tom 54
|
nr 2
16

Age of worker bees performing hygienic behaviour in a honeybee colony

51%
Panasiuk B., Skowronek W., Bienkowska M., Gerula D., Wegrzynowicz P.
Journal of Apicultural Science
|
2010
|
tom 54
|
nr 2
17

Development of an artificial pollen substitute/supplement diet to help tide the colonies of honeybee (Apis mellifera L.) over the dearth season

51%
Sihag R. C., Gupta M.
Journal of Apicultural Science
|
2011
|
tom 55
|
nr 2
18
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Związek między masą loszek przy urodzeniu i w 21 dniu życia oraz zależność między stosunkiem płci w miocie i liczbą sutek macior a płodnością

51%
Czarnecki R., Karmelita M., Delikator B., Owsianny J., Palusinski J.
Zeszyty Problemowe Postępów Nauk Rolniczych
|
1990
|
tom 384
Соотcетствующие исследования охватывали 214 помесных свинок из промышленной фермы, оплодотворенных в возрасте около 9 месяцев и весе 120 кг, а затем убитых на 33-ий день супоросности с целью определения параметров потенциальной плодовитости. В большинстве случаев были получены низкие и несущественные зависимости между весом свинок на 1-ый и 21-ый день жизни, соотношением полов в момете и числом сосцов с одной стороны и параметрами потенциальной плодовитости с другой. Была подтверждена положительная связь между числом желтых телец и числом эмбрионов. Были получены также высокосущественные положительные связи между весом и длиной матки и весом яичников, числом желтых телец и числом эмбрионов.
19

Field cases of bacterial septicaemia in adult honey bees

51%
Kauko L., Glinski Z.
Pszczelnicze Zeszyty Naukowe
|
1998
|
tom 42
|
nr 2
20

Effect of changing of colony structure on trapped pollen

51%
Bratkowski J., Wilde J.
Journal of Apicultural Science
|
2003
|
tom 47
|
nr 1
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