Volume 23, Issue 2 (2023) | OnLine Journal of Biological Sciences

Functional Role of Vitelline Glands and Mehlis Gland in the Process of Resistant Egg Shell Formation in Trematodes

Rimma Ualiyeva — 2023-02-28

OnLine Journal of Biological Sciences, Published online: 28 February 2023; doi:10.3844/ojbsci.2023.124.132

The study of the functional morphology of the reproductive system of trematodes, as well as its individual parts, provides an opportunity to solve an important problem that plays a huge role in theore...

Adaptation of the Third Generation Aberdeen Angus Heifers in the North Kazakhstan Region

Zhanat Titanov — 2023-03-01

OnLine Journal of Biological Sciences, Published online: 1 March 2023; doi:10.3844/ojbsci.2023.133.141

The article presents research materials on the adaptive and productive qualities of the third-generation heifers of Aberdeen Angus cattle in the conditions of the "Zholdasbay-agro" farming enterprise ...

Use of Novel Triphenyltin (IV) Dithiocarbamate Compounds in Assessing the Cytotoxicity and Mode of Cell Death of Acute Lymphoblastic Leukemia Cell Lines, CCRF CEM (CCL-119)

Normah Awang — 2023-03-10

OnLine Journal of Biological Sciences, Published online: 10 March 2023; doi:10.3844/ojbsci.2023.142.148

Chemotherapy and radiotherapy are often used to treat Acute Lymphoblastic Leukemia (ALL). However, the resistance problem of treatment using the current drug in ALL patients has decreased the effectiv...

Productive Traits and Reproductive Capacity of First-Calf Cows at Different Selection Options

Anuarbek Temirbekovich Bissembayev — 2023-03-10

OnLine Journal of Biological Sciences, Published online: 10 March 2023; doi:10.3844/ojbsci.2023.149.155

The research work is aimed at determining and establishing the degree of influence of various selection options on the productive and reproductive qualities of the first-calf cows of the black-and-whi...

Emerging Contaminants in Agriculture and Ways to Reduce them Emerging Contaminants in Agriculture

Sandra Pérez-Álvarez — 2023-03-15

OnLine Journal of Biological Sciences, Published online: 15 March 2023; doi:10.3844/ojbsci.2023.156.169

The accelerated development of modern agriculture in order to feed a growing world population is one of the main causes of contamination in soil, water, and air, causing diseases in animals and humans...

Eidonomy of Apis mellifera Workers and Drones in Apiaries

Anuarbek Temirbekovich Bissembayev — 2023-03-16

OnLine Journal of Biological Sciences, Published online: 16 March 2023; doi:10.3844/ojbsci.2023.170.176

In modern ecosystems, the increasing anthropogenic load, the absence or an insufficient number of scientifically based integrated programs and measures for the reproduction and distribution of local b...

A Review of Cellular Mechanism of Pulsed Electromagnetic Field (PEMF) in Inhibiting Adipogenesis of Mesenchymal Stem Cells

Puji Sari — 2023-03-26

OnLine Journal of Biological Sciences, Published online: 26 March 2023; doi:10.3844/ojbsci.2023.177.186

PEMF is a method that utilizes electric current using a coil that is powered by dynamic electric current, it will cause a dynamic magnetic field in the coil. In the last few decades, it is known that ...

The Harmfulness of Common Root Rot in Winter Wheat Varieties in Kazakhstan

Yerlan Dutbayev — 2023-03-20

OnLine Journal of Biological Sciences, Published online: 20 March 2023; doi:10.3844/ojbsci.2023.187.192

One of the main drawbacks of winter wheat varieties cultivated in Kazakhstan is their lack of resistance to common root rot. In 2020-2022, samples affected by root rot were taken in the earing phase i...

Impact of Coriander Seeds Extract Against Thyroidectomy Induced Testicular Damage and DNA Replication in Male Rats

Azhar Azher Alankooshi — 2023-04-03

OnLine Journal of Biological Sciences, Published online: 3 April 2023; doi:10.3844/ojbsci.2023.193.201

An important target organ for thyroid hormone activity is the testis and hypo or hyperthyroidism causes noticeable alterations in testicular function. This study aimed to investigate the therapeutic e...

Identification and Pathogenicity of the Soybean Root Rot Pathogen in Arid Conditions

Nurlan Kuldybayev — 2023-04-14

OnLine Journal of Biological Sciences, Published online: 14 April 2023; doi:10.3844/ojbsci.2023.202.209

Soy is an important oilseed crop in Kazakhstan. However, its yield is significantly reduced due to an increase in the development of fungal diseases with soil infection. This study aims to identify th...

Effect of Plant-Based Whole Milk Substitute on Calves' Growth Rate

Kulbaram Bayazitova — 2023-04-21

OnLine Journal of Biological Sciences, Published online: 21 April 2023; doi:10.3844/ojbsci.2023.210.218

One of the tasks of animal husbandry is the development of methods for rearing young animals to obtain healthy calves with specified indicators of productivity and early insemination. The purpose of t...

Trace Elements in Fertilizers Used in Peru

Víctor Gómez — 2023-04-10

OnLine Journal of Biological Sciences, Published online: 10 April 2023; doi:10.3844/ojbsci.2023.219.225

Fertilizers provide essential nutrients for crops, however, they may also inadvertently provide trace elements that in certain concentrations represent a risk to the soil and the food chain. The objec...

The Level of Breeding Value of Cattle of the Auliekol Breed, Calculated by the Blup Method

Anuarbek Temirbekovich Bissembayev — 2023-04-14

OnLine Journal of Biological Sciences, Published online: 14 April 2023; doi:10.3844/ojbsci.2023.226.235

Currently, the assessment of the breeding value of livestock provides for new approaches to determine the genetic qualities of animals that sustainably transmit to offspring. This is achieved by using...

Somatic Embryogenesis of Oil Palm (Elaeis guineensis Jacq.) from Bud Explants Using Suspension Culture

Nurul Huda Panggabean — 2023-05-04

OnLine Journal of Biological Sciences, Published online: 4 May 2023; doi:10.3844/ojbsci.2023.236.242

The propagation of oil palm seeds through tissue culture and somatic embryogenesis is a preferred method due to its ability to produce entire plants without the need for gamete fusion. While somatic e...

Development of Environmentally Friendly Protection Measures Against Pests and Diseases

N. S. Mukhamadiyev — 2023-04-27

OnLine Journal of Biological Sciences, Published online: 27 April 2023; doi:10.3844/ojbsci.2023.243.250

The paper describes the monitoring of phytosanitary conditions in different regions of the Almaty region (Kazakhstan) and demonstrates the large population of cruciferous fleas (Phyllotreta cruciferae...