scholarly journals The influence of feed quality on the development and productivity of bee queens

2021 ◽  
Vol 23 (95) ◽  
pp. 71-75
Author(s):  
Yu. Kovalskyi ◽  
B. Gutyj ◽  
V. Fedak ◽  
L. Kovalska ◽  
A. Druzhbiak
Keyword(s):  
Reproductive Performance ◽  
Maximum Load ◽  
Foster Families ◽  
Bee Pollen ◽  
Sugar Syrup ◽  
Protein Feeding ◽  
Additional Protein ◽  
Protein Components ◽  
Protein Supply ◽  
Protein Feed

The research aimed to study the effect of additional protein feeding of foster families with buckwheat stalks. The research was conducted during the summer period in 2020 and 2021. Ten foster families were selected for the experiment. All families are chosen by the method of analogs. Bees were kept in beehives. The uterus of the Carpathian breed took part in the investigation. Control families were fed 200 g of sugar syrup (1:1) twice daily for 8 and 21 hours. Feeding began three days before inoculation of queen cells and continued until the time of their sealing. The experimental families were fed the same amount of sugar syrup. Still, they received an additional 0.5 kg of protein feed in the form of bee pollen from buckwheat, the average protein content of which was 22.0 ± 0.32 %. Bee pollen is obtained by selection with the help of mounted on the auxiliary families of hinged pollen catchers with a diameter of the inlet of the pollen catcher lattice 5 mm. Pruning was carried out during the flowering of buckwheat in the period from morning to 13 o'clock in the afternoon. Adding bee pollination to the feed of foster families improves the growth and development of queens. Balancing the diet by nutrients increases the reproductive performance of the uterus, which is directly proportional to the level of their protein supply. When growing queens, the introduction of additional protein components of feed into the diet of foster families in the form of buckwheat leads to an increase in the maximum load of honeycomb by 11.4 %. The level of development of the pharyngeal glands in the researcher's families was 49 % higher. Balancing the diet by nutrients increases the reproductive performance of the queens of the Carpathian breed of bees by 16 % compared to the control.

Bee pollen as a dietary supplement for fish: Effect on the reproductive performance of zebrafish and the immunological response of their offspring

2021 ◽  
Author(s):  
Isabela M. Di Chiacchio ◽  
Isadora M. Paiva ◽  
Danilo J.M. de Abreu ◽  
Elisângela E.N. Carvalho ◽  
Pedro J. Martínez ◽  
...  
Keyword(s):  
Dietary Supplement ◽  
Reproductive Performance ◽  
Immunological Response ◽  
Bee Pollen

scholarly journals MORPHOLOGICAL CHARACTERISTICS OF BEE POLLEN OBTAINED FROM BRASSICA NAPUS L.

2016 ◽  
Vol 18 (2) ◽  
pp. 73-78
Author(s):  
N.M. Redina ◽  
L.O. Adamchuk ◽  
N.V. Nikolaieva ◽  
J. Brindza
Keyword(s):  
Brassica Napus ◽  
Local Population ◽  
Morphological Characteristics ◽  
Morphometric Measurements ◽  
Brassica Napus L ◽  
Pollen Collection ◽  
Bee Pollen ◽  
Total Pollen ◽  
Protein Feed ◽  
Selection Of

The purpose of this work was to research the morphological characteristics of monofloral bee pollen obtained from Brassica napus L. The formulated goals were: determine the period of bee pollen receiving; implement the selection of bee pollen samples during blooming period of species; establish the monoflorality ratio of the total pollen collection; explore the morphometric indicators of bee pollen by the parameters of pollen lump, shaping level and weight. Bee pollen collection was carried out in Skvyra district of Kyiv region from local population of Apis mellifera L. families. Morphometric measurements were performed in the Institute of Biodiversity Conservation and Biosafety, Slovak University of Agriculture in Nitra. Here were determined the amount of bee pollen per one day brought by one family: from  27.04 to 03.05.16 is 50.8 ± 2.25 g; from 04.05 to 06.05.16 – 100.0 ± 3.33 g; from 07.05 to 17.05.16 – 270.7 ± 11.79 g; from 18.05 to 22.05.16 – 100.5 ± 3.028 g; from 23.05 – 25.05.16 – 39.8 ± 2.74 g. Here were defined the morphological parameters of bee pollen lump from B. napus: length is in the range from 3.40 ± 0.061 mm to 3.66 ± 0.048 mm; width is in the range from 2.88 ± 0.059 mm to 3.26 ± 0.067 mm; weight is in the range from 8.65 ± 0.317 mg to 11.31 ± 0.241 mg; shaping level of bee pollen is in the range 4.62 – 4.96 points. The total monoflorality ratio constitutes from 79.94 ± 0.619 % to 98.00 ± 0.202 %. The obtained results confirmed that the activity of bee flying depends on the blooming period and intensity of the nectar secretion, on the collection of protein feed from B. napus. Pollen lumps from Brassica napus L. bee pollen were large, dense, regular shape without splits, which specified the possibility of its use for the producing on a commercial scale.  

Effect of late gestation low protein supply to mink (Mustela vison) dams on reproductive performance and metabolism of dam and offspring

2010 ◽  
Vol 64 (1) ◽  
pp. 56-76 ◽  
Author(s):  
Connie Frank Matthiesen ◽  
Dominique Blache ◽  
Preben Dybdahl Thomsen ◽  
Niels Enggaard Hansen ◽  
Anne-Helene Tauson
Keyword(s):  
Reproductive Performance ◽  
Mustela Vison ◽  
Late Gestation ◽  
Low Protein ◽  
Protein Supply

scholarly journals Тhe influence of the removal bee pollen with the pollen catcher on the flight activity and behaviour of the bees-polen collectors

2021 ◽  
pp. 25-33
Author(s):  
O. Mishchenko ◽  
O. Lytvynenko ◽  
K. Afara ◽  
D. Kryvoruchko
Keyword(s):  
Experimental Studies ◽  
Flight Activity ◽  
Protein Food ◽  
Bee Pollen ◽  
Bee Bread ◽  
Medium Strength ◽  
Productivity Potential ◽  
The Individual ◽  
And Control ◽  
Protein Feed

The possibility of demonstration of the productivity potential of the bee families depends directly on the level of provision of protein feed. In this regard, the study of the bees behavior that is connected to harvesting and processing of protein food is important for both biology and practical beekeeping. The presented work provides some data of experimental studies of the influence of the removal of the bee pollen on the flight activity of bees. The study of the ethological features that enhance the increase of collection, harvesting and processing of the protein feed was conducted. With this purpose the studies were conducted to elucidate the factors that induce collection of the protein feed -bee pollen by bees and its harvesting in the nest of the bee family in the form of the bee bread. The factors that influence the increase of the collection of the protein feed by bees were researched on experimental and control bee families- analogues. Throughout the studies it was identified that the bees with medium strength were the most active in collecting the pollen. The removal of the bee pollen with pollen catchers decreases the raising of brood by bee families, but doesn’t result in their significant weakening. With the enlargement of the area of the open brood the collection of the pollen by bees increases. In order to obtain the saleable bee pollen the strong bee families should be kept on the apiary. The bees-collectors of the protein feed have the individual features of collecting the bee pollen. With the removal of thbrood from the nest the activity the bees that flew out decreased. When adding the open brood the activity increased. On the contrary, with supply of the bee pollen to the nest, the pollen collecting activity decreases and adding the carbohydrates has no effect. The removal of the bee pollen with the pollen catcher from the bee families increases the flight activity which in turn leads to obtaining more bee pollen on the apiaries and pollination of additional quantity of entomophilous plants. In order to obtain the saleable bee pollen the strong families should be kept on the apiary and the removal should be conducted in the morning and day hours. Key words: bee family, Ukrainian steppe breed, pollen, bee pollen, bee bread, pollen catcher, flight activity of bees.

Influence of source of rumen-degraded nitrogen on ruminal and whole tract digestion, plasma hormone and metabolite concentrations as well as milk yield and composition in dairy cows

1991 ◽  
Vol 71 (2) ◽  
pp. 417-428 ◽  
Author(s):  
P. H. Robinson ◽  
G. de Boer ◽  
J. J. Kennelly
Keyword(s):  
Milk Yield ◽  
Milk Composition ◽  
Canola Meal ◽  
Nonprotein Nitrogen ◽  
Rumen Ph ◽  
Meal Protein ◽  
Milk Urea ◽  
True Protein ◽  
Protein Supply ◽  
Protein Feed

Fifteen multiparous and 10 primiparous cows in early lactation (parturition through 16 wk postpartum inclusive) were fed one of five totally mixed diets. Diets differed in the source of supplemental nitrogen with isonitrogenous substitution of canola meal (a rapidly rumen-degraded true protein source) by Barlein (a rapidly rumen degraded nonprotein nitrogen source). All diets were 40% whole crop oat silage and 60% concentrate on a dry matter basis. Rumen pH, ammonia N and lactate concentrations as well as in sacco rumen degradability of whole diet nitrogen were not influenced by treatment. These results appear to support the assumption that Barlein nitrogen was released in the rumen at a rate similar to that of canola meal protein. Feed intake and body weight change did not differ among treatments. However, milk yield declined linearly as substitution of canola meal with Barlein increased. Milk composition of fat, protein, and lactose were not influenced by treatment although milk urea concentrations increased as substitution of canola meal with Barlein increased. Data collected did not conclusively identify the mechanism for the reduced performance; however, it seems most likely it was the result of reduced rumen microbial growth and escape as substitution of canola meal with Barlein increased, leading to a deficiency in metabolizable protein supply. Key words: NPN, dairy cattle, protein

scholarly journals Comparative assessment of various supplementary diets on commercial honey bee (Apis mellifera) health and colony performance

PLoS ONE ◽  
2021 ◽  
Vol 16 (10) ◽  
pp. e0258430
Author(s):  
Saboor Ahmad ◽  
Khalid Ali Khan ◽  
Shahmshad Ahmed Khan ◽  
Hamed A. Ghramh ◽  
Aziz Gul
Keyword(s):  
Honey Bee ◽  
Colony Development ◽  
Control Group ◽  
Pollen Load ◽  
Treatment Groups ◽  
Bee Colony ◽  
Sugar Syrup ◽  
Colony Performance ◽  
Protein Feeding ◽  
Honey Yield

A healthy honey bee stock is critical to the beekeeping industry and the sustainability of the ecosystem. The quality of the supplemental diet influences the development and strength of the colony, especially during the pollen dearth period in the surrounding environment. However, the extent to which pollen substitute protein feeding affects honey bee colony parameters is not fully known. We conducted this study to test the influence of various supplemental diets on foraging effort, pollen load, capped brood area, population density, and honey yield. The treatment groups were supplied with patties of pollen substitute diets, whereas sugar syrup was given to the control group. Our results indicated that honey bees consumed a significantly higher amount of Diet 1 (45 g soybean flour + 15 g Brewer’s yeast + 75 g powdered sugar + 7.5 g skimmed milk + 7.5 g date palm pollen + 200 mL sugar syrup supplement with Vitamin C) followed by others supplemented diets. Further, pollen load, worker-sealed brood area, population strength, and honey yield differed significantly when Diet 1 was consumed instead of other supplemental diets. The proportion of biological parameters was less in the control group as compared to other treatments. This study highlights the potential of supplemental diets to improve the bee’s health and colony development when the pollens availability and diversity are insufficient.

scholarly journals Distinct RNA polymerase transcripts direct the assembly of phase-separated DBC1 nuclear bodies in different cell lines

2021 ◽  
pp. mbc.E21-02-0081
Author(s):  
Taro Mannen ◽  
Masato Goto ◽  
Takuya Yoshizawa ◽  
Akio Yamashita ◽  
Tetsuro Hirose ◽  
...  
Keyword(s):  
Rna Polymerase ◽  
Rna Binding ◽  
Nuclear Body ◽  
Nuclear Bodies ◽  
Intrinsically Disordered ◽  
Intrinsically Disordered Regions ◽  
Binding Domains ◽  
Additional Protein ◽  
Protein Components

The mammalian cell nucleus is a highly organized organelle that contains membrane-less structures referred to as nuclear bodies (NBs). Some NBs carry specific RNA types that play architectural roles in their formation. Here, we show two types of RNase-sensitive DBC1-containing NBs: DBC1 nuclear body (DNB) in HCT116 cells and Sam68 nuclear body (SNB) in HeLa cells that exhibit phase-separated features and are constructed using RNA polymerase I or II transcripts in a cell type-specific manner. We identified additional protein components present in DNB by immunoprecipitation-mass spectrometry, some of which (DBC1 and HNRNPL) are required for DNB formation. The rescue experiment using the truncated HNRNPL mutants revealed that two RNA-binding domains and intrinsically disordered regions of HNRNPL play significant roles in DNB formation. All these domains of HNRNPL promote in vitro droplet formation, suggesting the need for multivalent interactions between HNRNPL and RNA as well as proteins in DNB formation.

scholarly journals Productive and reproductive performance of rabbits does as affected by bee pollen and/or propolis, inulin and/or mannan-oligosaccharides

2015 ◽  
Vol 23 (4) ◽  
pp. 273 ◽  
Author(s):  
Y.A. Attia ◽  
F. Bovera ◽  
W.S. El-Tahawy ◽  
A.M. El-Hanoun ◽  
M.A. Al-Harthi ◽  
...  
Keyword(s):  
Body Weight ◽  
Economic Efficiency ◽  
Reproductive Performance ◽  
Body Weight Gain ◽  
Plasma Cholesterol ◽  
Control Group ◽  
Growth Promoters ◽  
Bee Pollen ◽  
Feed Cost ◽  
Mannan Oligosaccharides

<p>The aim of the paper was to compare the effect of prebiotics (inulin and/or mannan-oligosaccharides, MOS) and bee products (bee pollen and/or propolis) on productive and reproductive performance of rabbit does. Seventy nulliparous V-line female rabbits were distributed among 7 groups. The groups were fed the same diet and received no supplements (control group), natural molecules (bee pollen and/or propolis) at 200 mg/kg body weight (BW) or prebiotics (inulin and/or MOS) at 35 mg/kg BW. Productive, reproductive, biochemical and haematological traits were investigated. Bee pollen with propolis significantly increased body weight gain of does 1 wk after mating (3.53%), decreased feed intake (4.49%) and caused larger litter size (39.4%), heavier body weight of litter (17.7%), a greater number of kits born alive (48.7%), higher weight of kits (87.81%) at 28 d of age, higher milk yield (43.6%) and more favourable milk conversion ratio (31.6%). Moreover, bee pollen with propolis had significantly increased plasma total protein (43.1%), albumin (45.7%), globulin (41.0) and progesterone (60.5%), and had a significantly decreased plasma cholesterol (31.1%), aspartate aminotransferase/alanine aminotransferase ratio (20.3%) compared to the control group. Does treated with growth promoters had significantly fewer services per conception (22%) and greater fertility rate (21%) compared to the control group. Inulin with or without MOS significantly increased plasma glucose (49.9 and 50%, respectively) and feed cost (90.2%) compared to the control group. Supplementation of MOS or bee pollen with or without propolis had significantly greater relative economic efficiency (61.9, 55.1 and 27.1%, respectively) than the control group. MOS and bee pollen with or without propolis are able to improve productive and reproductive performance and economic efficiency of rabbit does in comparison to the unsupplemented group.</p>

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