Zeszyty

Zeszyty czasopisma

AHEAD OF PRINT

Tom 45 (2022): Zeszyt 1 (March 2022)

Tom 44 (2021): Zeszyt 2 (October 2021)

Tom 44 (2021): Zeszyt 1 (March 2021)

Tom 43 (2020): Zeszyt 2 (October 2020)

Tom 43 (2020): Zeszyt 1 (March 2020)

Tom 42 (2019): Zeszyt 2 (October 2019)

Tom 42 (2019): Zeszyt 1 (March 2019)

Tom 41 (2018): Zeszyt 2 (October 2018)

Tom 41 (2018): Zeszyt 1 (March 2018)

Tom 40 (2017): Zeszyt 2 (October 2017)

Tom 40 (2017): Zeszyt 1 (March 2017)

Tom 39 (2016): Zeszyt 2 (October 2016)

Tom 39 (2016): Zeszyt 1 (March 2016)

Tom 38 (2015): Zeszyt 2 (October 2015)

Tom 38 (2015): Zeszyt 1 (March 2015)

Tom 37 (2014): Zeszyt 2 (October 2014)

Tom 37 (2014): Zeszyt 1 (March 2014)

Informacje o czasopiśmie
Format
Czasopismo
eISSN
1857-7415
Pierwsze wydanie
08 Sep 2014
Częstotliwość wydawania
2 razy w roku
Języki
Angielski

Wyszukiwanie

AHEAD OF PRINT

Informacje o czasopiśmie
Format
Czasopismo
eISSN
1857-7415
Pierwsze wydanie
08 Sep 2014
Częstotliwość wydawania
2 razy w roku
Języki
Angielski

Wyszukiwanie

8 Artykułów
Otwarty dostęp

Novelties in Ovine Assisted Reproductive Technologies – A Review

Data publikacji: 27 Apr 2022
Zakres stron: -

Abstrakt

Abstract

Artificial insemination (AI) as a part of assisted reproductive technologies represents the oldest and most widespread method used to accelerate genetic progress in all domestic animals. After its first implementation in ovine reproduction and almost 80 years afterward, AI is continuously used for improving the genetic merit, utilizing either fresh or short-time chilled semen. Nevertheless, regardless of the semen used for insemination, the conception rate (CR) is still lower in comparison to natural service. At least two factors are commonly thought to limit the success of the AI and reduce the CR: (1) failure of placing the semen directly into the uterus due to the specific anatomic structure of the ewe’s cervix; (2) lower viability of ram spermatozoa during cryopreservation (<30% progressively motile spermatozoa after thawing). This review elaborates on recent studies that aimed to achieve acceptable CR through the implementation of cervical or intrauterine insemination: deep intracervical, intrauterine trans-cervical, and intracornual. Several hormonal treatments (oxytocin, estrogen, or prostaglandin) were evaluated on inducing cervical dilation that facilitates insemination. A comprehensive analysis was given to the effects of several antioxidants (GSSG, GSH, and cysteine) supplemented in ram semen-freezing media. Sex-sorted ram semen fertility rate results were presented from our studies.

Słowa kluczowe

  • artificial insemination
  • sheep
  • insemination
  • ejaculate conservation
  • sex sorted semen
Otwarty dostęp

Computer Tomography (CT) Scans as a Diagnostic Tool for Interpretation of S10 Plastinated Slides from Dog Cadaver

Data publikacji: 27 Apr 2022
Zakres stron: -

Abstrakt

Abstract

Computed tomography (CT) is a routine method for the diagnosis of pathological structures in the body and has been widely used in veterinary medicine as an advanced diagnostic imagining tool in veterinary clinics. However, interpretation of CT scans requires detailed knowledge of topographical animal anatomy and usually has limited scan resolution due to the ambiguous relationship between signal intensity and tissue composition. The aim of the study was to assess the morphometric similarities between S10 plastinated slides and computer tomography (CT) scans and their usability as compatible paired diagnostic methods. A 3-year-old euthanized dog cadaver was scanned on SHIMADZU SCT/6800TXL scanner immediately post-mortem, then frozen at -80 °C to preserve the correct anatomical position, and plastinated with a standardized procedure. Semi-transparent transversal slices (5 mm) were obtained from the head, thoracic, and lumbar sections of the body. The S10 plastinated slides and CT scans contained fine and small anatomical structures with high similarity. The spatial relationships of all anatomical structures on the serial S10 platinates were in the correct anatomical position. In conclusion, S10 transversal slices showed high similarity with the CT scans and allowed identification of the corresponding morphological structures. The S10 thin plastinated transversal slices could be used for additional interpretation of CT transversal scans at veterinary clinics and as a didactical tool for veterinary students.

Słowa kluczowe

  • S10 plastination
  • computer tomography (CT)
  • topographic anatomy
  • dog
Otwarty dostęp

Assessment of Hematological and Serum Biochemistry Parameters in Dogs with Acute Diarrhea Due to Different Etiologies

Data publikacji: 10 Aug 2022
Zakres stron: -

Abstrakt

Abstract

Acute diarrhea (AD) has a complex etiology and may lead to life-threatening conditions. Hematological and serum biochemistry analyses can be useful for a differential diagnosis and for determining the severity of diarrhoea. Dogs with AD (n=72) were divided into Isospora (n=18), Toxocara (n=18), Parvoviral Enteritis (n=18), and Dietary Diarrhea (n=18) subgroups following clinical and laboratory examinations. The study aimed to evaluate the diagnostic value of certain hematological and serum biochemistry parameters. Clinical examinations, rapid diagnostic tests, complete blood count (CBC), and biochemical analyses were performed. White blood cell count (WBC), granulocyte, and mean hemoglobin concentration (MCH) levels were lower in the Parvoviral Enteritis Group compared with the other groups (p<0.01). Isospora, Parvoviral Enteritis, and Toxocara groups had lower glucose and total protein, and higher creatinine levels than those of the Control and Dietary Diarrhea groups (p<0.0001). The albumin level of the Dietary Diarrhea Group was higher compared with the other groups (p<0.0001). Parvoviral Enteritis and Isospora groups had higher ALP levels than those of the other groups (p<0.0001). Blood urea nitrogen (BUN), alanine aminotransferase (ALT), C-reactive protein (CRP), and cholesterol levels were determined to be highest in the Parvoviral Enteritis Group (p<0.0001). The total bilirubin level was higher in Parvoviral Enteritis and Toxocara groups compared with the Control, Isospora, and Dietary Diarrhea groups (p<0.0001). As a result, it was concluded that in cases of AD due to parvoviral enteritis and Toxocara canis, serum biochemistry abnormalities may be more severe, can provide more clinical information than CBC, and can be useful in forming a differential diagnosis list, especially in triage.

Słowa kluczowe

  • Parvoviral enteritis
  • toxocariasis
  • isosporiasis
  • dietary diarrhea
  • dog
Otwarty dostęp

Carbohydrate Metabolism in Diabetic Rat’s Heart – The Effects of Acetylsalicylic Acid and Heat Preconditioning as HSP70 Inducers

Data publikacji: 02 Aug 2022
Zakres stron: -

Abstrakt

Abstract

The myocardium of diabetic subjects displays reduced HSP70 protein level and weak myocardial protection. However, the heart possesses an ability to produce heat shock proteins (HSPs) after exposure to sublethal heat stress. Acetylsalicylicacid (ASA) has the property of pharmacological induction of HSPs. We evaluated the common effects of single dose ASA-pretreatment, prior to heat preconditioning (HP), over carbohydrate metabolism-related enzymes and substrates in the heart of diabetic rats. Streptozotocin-diabetes caused significant decrease of HSP70 protein level, stimulation of the gluconeogenic processes and inhibition of glycolytic processes in the heart. HP-diabetic hearts have significantly higher HSP70 protein level, lower glycogen, glucose-6-phosphate content, glycogen phosphorylase and hexokinase activity, and higher glucose levels and PFK activity. ASA-pretreatment of HP-diabetic animals caused additional increase of HSP70, additional decrease of glycogen, glucose-6-phosphate, glycogen phosphorylase and hexokinase, and additional increase of glucose and PFK in the heart. In conclusion, HP is physiological inducer of HSP70 level in heart and tends to reverse carbohydrate - related disturbances in diabetic rats. ASA, given prior to HP, is a potent HSP70 co-inducer and causes additional increase of HSP70 protein level in heart. ASA, given in a combination to HP, have shown more evident protective effects against subsequent intense of stress.

Słowa kluczowe

  • heat preconditioning
  • acetylsalicylic acid
  • streptozotocin-induced diabetes
  • heart
  • carbohydrate-related enzymes and substrates
Otwarty dostęp

Using Species-Specific Protocols for the Welfare Assessment of Elephants in the Skopje Zoo

Data publikacji: 12 May 2022
Zakres stron: -

Abstrakt

Abstract

Providing good animal welfare standards is very important for wild animals in captivity, especially in zoos. Therefore, the aim of this study was to perform a welfare assessment of elephants in the Skopje Zoo using species-specific protocols. Two specific protocols were used for the welfare assessment and were combined for a more unified approach. These protocols focused on the assessment of the elephant’s day-time behaviour, including Qualitative Behaviour Assessment (QBA), as well as the following sections: nutrition, physical health, environment, behaviour and management. Data was collected from the Asian and African elephants that were housed together, in the Skopje Zoo. Both species were observed for three consecutive days, during which time QBA was performed and they were observed on their daytime behaviour. Feeding (42% African, 34% Asian elephant) and anticipatory (35% African, 22% Asian elephant) behaviour were predominantly observed daytime behaviours of both elephants, as well as stereotypic behaviour (30%) of the Asian elephant. Concerning the QBA, ‘uncomfortable’ (296 Asian, 234 African elephants) and ‘relaxed’ (271 Asian, 280 African elephants) were the most dominant descriptors for both elephants. The collected data indicated that the elephants were in good physical health. Regular feeding enrichment, as well as environmental enrichment was recommended. There is room for improvement concerning the management practices of the elephants.

Słowa kluczowe

  • animal welfare
  • behaviour observation techniques
  • zoo animals
  • elephants
Otwarty dostęp

Morphological, Morphometric and Radiographic Studies on the Skull of Lesser Mole-Rats (Nannospalax leucodon)

Data publikacji: 15 Sep 2022
Zakres stron: -

Abstrakt

Abstract

Lesser mole-rats (Nannospalax leucodon) are members of the Rodentia order’s Spalacidae family, and they are found in Northeastern Africa, the Balkans, Southeastern Europe, Central Asia, the Middle East, and Caucasia. The shape of the skull has a significant impact on the phenotypic appearance of animal heads, and although many domestic species have been studied, there is a lack of evidence on the macro-anatomical characteristics of the skeletal system in mole-rats. The current research was focused on the morphological, morphometric, and radiographic properties of lesser mole-rats skull in Bosnia and Herzegovina. The research was conducted on five lesser mole-rats from Bjelasnica Mountain, Bosnia and Herzegovina. We compared the results of the previously published studies, and we found a lot of similarities between Nannospalax leucodon in Bosnia and Herzegovina and Nannospalax ehrenbergi in North Iraq, as well as the Nannospalax nehringi from Eastern Anatolia.

Słowa kluczowe

  • morphology
  • neurocranium
  • radiography
  • rodents
  • splanchnocranium
Otwarty dostęp

Use of Probiotic Bacillus megaterium NCH 55 for Treatment of Subclinical Mastitis in Cows – Preliminary Study

Data publikacji: 15 Sep 2022
Zakres stron: -

Abstrakt

Abstract

The development and implementation of new and safe means of treating subclinical mastitis (SM) in the production process remains a pressing problem. Our study aimed to investigate the therapeutic effect of the Bacillus megaterium NCH 55 strain on cow SM. All animals with signs of SM were fed with a basic diet with probiotic’s addition of 15 g/per day. The experiment was conveyed in 30 consecutive days. Milk and blood were collected on the 7th, 15th, and 30th day of the experiment. Daily milk yield was increased by 32.2% and somatic cell count was decreased from 290.00±32.12 to 96.80±39.03 ths/cm3. A decrease in inflammation was indicated by a decrease in POM370 (by 2.2 times) and POM430 (by 2.8 times). No significant changes in the blood serum indices of cows were observed. A probiotic’s positive effect has been established on the treatment of SM. The probiotic B. megaterium NСH 55 can be considered as an alternative to antibiotics and other chemotherapeutic drugs for treating SM in cows.

Słowa kluczowe

  • cow
  • mastitis
  • milk
  • probiotics
Otwarty dostęp

Morphometric and Histochemical Features of the Harderian Gland in Rabbits with Different Types of Autonomous Regulation

Data publikacji: 15 Sep 2022
Zakres stron: -

Abstrakt

Abstract

The tonus of autonomous centers reflected in the morpho-functional features of the organs in mammals. The study aimed to establish the influence of the autonomous regulation and its’ typological peculiarities on the structural features of the rabbits’ Harderian gland. Clinically healthy male rabbits, four months old, weighing 3.6-3.9 kg, were selected for the research. Based on the study of heart rate variability, three types of autonomous regulation were outlined, according to which three groups of rabbits were formed: ST rabbits (sympathetic dominant regulation), PS rabbits (parasympathetic dominant regulation), and NT rabbits (combined sympathetic and parasympathetic regulation). After euthanasia, the Harderian gland was dissected in all animals. Histological specimens were prepared and a morphometric examination was performed. ST rabbits corresponded to the minimal indicators in the tubular alveoli in both parts of the gland, as well as the maximum indicators of capsule thickness. NT rabbits corresponded to the maximum values of the acini area in the pink lobe, and in the white lobe - the maximal values of the cross-sectional area of the tubular alveoli, its wall area, and the epithelium height. The maximum acini area corresponded to PS rabbits in the white lobe, and in the pink lobe - the maximum indicators of the tubular alveoli cross-sectional area, and epithelial height. The pink and white lobes’ structure of the rabbit’s Harderian gland was affected by the combined tonus of the sympathetic and parasympathetic centers. The findings elucidate the regulatory and trophic effects on the Harderian gland in rabbits.

Słowa kluczowe

  • Harderian gland
  • rabbits
  • tubular alveoli
  • morphometry
  • autonomous regulation
8 Artykułów
Otwarty dostęp

Novelties in Ovine Assisted Reproductive Technologies – A Review

Data publikacji: 27 Apr 2022
Zakres stron: -

Abstrakt

Abstract

Artificial insemination (AI) as a part of assisted reproductive technologies represents the oldest and most widespread method used to accelerate genetic progress in all domestic animals. After its first implementation in ovine reproduction and almost 80 years afterward, AI is continuously used for improving the genetic merit, utilizing either fresh or short-time chilled semen. Nevertheless, regardless of the semen used for insemination, the conception rate (CR) is still lower in comparison to natural service. At least two factors are commonly thought to limit the success of the AI and reduce the CR: (1) failure of placing the semen directly into the uterus due to the specific anatomic structure of the ewe’s cervix; (2) lower viability of ram spermatozoa during cryopreservation (<30% progressively motile spermatozoa after thawing). This review elaborates on recent studies that aimed to achieve acceptable CR through the implementation of cervical or intrauterine insemination: deep intracervical, intrauterine trans-cervical, and intracornual. Several hormonal treatments (oxytocin, estrogen, or prostaglandin) were evaluated on inducing cervical dilation that facilitates insemination. A comprehensive analysis was given to the effects of several antioxidants (GSSG, GSH, and cysteine) supplemented in ram semen-freezing media. Sex-sorted ram semen fertility rate results were presented from our studies.

Słowa kluczowe

  • artificial insemination
  • sheep
  • insemination
  • ejaculate conservation
  • sex sorted semen
Otwarty dostęp

Computer Tomography (CT) Scans as a Diagnostic Tool for Interpretation of S10 Plastinated Slides from Dog Cadaver

Data publikacji: 27 Apr 2022
Zakres stron: -

Abstrakt

Abstract

Computed tomography (CT) is a routine method for the diagnosis of pathological structures in the body and has been widely used in veterinary medicine as an advanced diagnostic imagining tool in veterinary clinics. However, interpretation of CT scans requires detailed knowledge of topographical animal anatomy and usually has limited scan resolution due to the ambiguous relationship between signal intensity and tissue composition. The aim of the study was to assess the morphometric similarities between S10 plastinated slides and computer tomography (CT) scans and their usability as compatible paired diagnostic methods. A 3-year-old euthanized dog cadaver was scanned on SHIMADZU SCT/6800TXL scanner immediately post-mortem, then frozen at -80 °C to preserve the correct anatomical position, and plastinated with a standardized procedure. Semi-transparent transversal slices (5 mm) were obtained from the head, thoracic, and lumbar sections of the body. The S10 plastinated slides and CT scans contained fine and small anatomical structures with high similarity. The spatial relationships of all anatomical structures on the serial S10 platinates were in the correct anatomical position. In conclusion, S10 transversal slices showed high similarity with the CT scans and allowed identification of the corresponding morphological structures. The S10 thin plastinated transversal slices could be used for additional interpretation of CT transversal scans at veterinary clinics and as a didactical tool for veterinary students.

Słowa kluczowe

  • S10 plastination
  • computer tomography (CT)
  • topographic anatomy
  • dog
Otwarty dostęp

Assessment of Hematological and Serum Biochemistry Parameters in Dogs with Acute Diarrhea Due to Different Etiologies

Data publikacji: 10 Aug 2022
Zakres stron: -

Abstrakt

Abstract

Acute diarrhea (AD) has a complex etiology and may lead to life-threatening conditions. Hematological and serum biochemistry analyses can be useful for a differential diagnosis and for determining the severity of diarrhoea. Dogs with AD (n=72) were divided into Isospora (n=18), Toxocara (n=18), Parvoviral Enteritis (n=18), and Dietary Diarrhea (n=18) subgroups following clinical and laboratory examinations. The study aimed to evaluate the diagnostic value of certain hematological and serum biochemistry parameters. Clinical examinations, rapid diagnostic tests, complete blood count (CBC), and biochemical analyses were performed. White blood cell count (WBC), granulocyte, and mean hemoglobin concentration (MCH) levels were lower in the Parvoviral Enteritis Group compared with the other groups (p<0.01). Isospora, Parvoviral Enteritis, and Toxocara groups had lower glucose and total protein, and higher creatinine levels than those of the Control and Dietary Diarrhea groups (p<0.0001). The albumin level of the Dietary Diarrhea Group was higher compared with the other groups (p<0.0001). Parvoviral Enteritis and Isospora groups had higher ALP levels than those of the other groups (p<0.0001). Blood urea nitrogen (BUN), alanine aminotransferase (ALT), C-reactive protein (CRP), and cholesterol levels were determined to be highest in the Parvoviral Enteritis Group (p<0.0001). The total bilirubin level was higher in Parvoviral Enteritis and Toxocara groups compared with the Control, Isospora, and Dietary Diarrhea groups (p<0.0001). As a result, it was concluded that in cases of AD due to parvoviral enteritis and Toxocara canis, serum biochemistry abnormalities may be more severe, can provide more clinical information than CBC, and can be useful in forming a differential diagnosis list, especially in triage.

Słowa kluczowe

  • Parvoviral enteritis
  • toxocariasis
  • isosporiasis
  • dietary diarrhea
  • dog
Otwarty dostęp

Carbohydrate Metabolism in Diabetic Rat’s Heart – The Effects of Acetylsalicylic Acid and Heat Preconditioning as HSP70 Inducers

Data publikacji: 02 Aug 2022
Zakres stron: -

Abstrakt

Abstract

The myocardium of diabetic subjects displays reduced HSP70 protein level and weak myocardial protection. However, the heart possesses an ability to produce heat shock proteins (HSPs) after exposure to sublethal heat stress. Acetylsalicylicacid (ASA) has the property of pharmacological induction of HSPs. We evaluated the common effects of single dose ASA-pretreatment, prior to heat preconditioning (HP), over carbohydrate metabolism-related enzymes and substrates in the heart of diabetic rats. Streptozotocin-diabetes caused significant decrease of HSP70 protein level, stimulation of the gluconeogenic processes and inhibition of glycolytic processes in the heart. HP-diabetic hearts have significantly higher HSP70 protein level, lower glycogen, glucose-6-phosphate content, glycogen phosphorylase and hexokinase activity, and higher glucose levels and PFK activity. ASA-pretreatment of HP-diabetic animals caused additional increase of HSP70, additional decrease of glycogen, glucose-6-phosphate, glycogen phosphorylase and hexokinase, and additional increase of glucose and PFK in the heart. In conclusion, HP is physiological inducer of HSP70 level in heart and tends to reverse carbohydrate - related disturbances in diabetic rats. ASA, given prior to HP, is a potent HSP70 co-inducer and causes additional increase of HSP70 protein level in heart. ASA, given in a combination to HP, have shown more evident protective effects against subsequent intense of stress.

Słowa kluczowe

  • heat preconditioning
  • acetylsalicylic acid
  • streptozotocin-induced diabetes
  • heart
  • carbohydrate-related enzymes and substrates
Otwarty dostęp

Using Species-Specific Protocols for the Welfare Assessment of Elephants in the Skopje Zoo

Data publikacji: 12 May 2022
Zakres stron: -

Abstrakt

Abstract

Providing good animal welfare standards is very important for wild animals in captivity, especially in zoos. Therefore, the aim of this study was to perform a welfare assessment of elephants in the Skopje Zoo using species-specific protocols. Two specific protocols were used for the welfare assessment and were combined for a more unified approach. These protocols focused on the assessment of the elephant’s day-time behaviour, including Qualitative Behaviour Assessment (QBA), as well as the following sections: nutrition, physical health, environment, behaviour and management. Data was collected from the Asian and African elephants that were housed together, in the Skopje Zoo. Both species were observed for three consecutive days, during which time QBA was performed and they were observed on their daytime behaviour. Feeding (42% African, 34% Asian elephant) and anticipatory (35% African, 22% Asian elephant) behaviour were predominantly observed daytime behaviours of both elephants, as well as stereotypic behaviour (30%) of the Asian elephant. Concerning the QBA, ‘uncomfortable’ (296 Asian, 234 African elephants) and ‘relaxed’ (271 Asian, 280 African elephants) were the most dominant descriptors for both elephants. The collected data indicated that the elephants were in good physical health. Regular feeding enrichment, as well as environmental enrichment was recommended. There is room for improvement concerning the management practices of the elephants.

Słowa kluczowe

  • animal welfare
  • behaviour observation techniques
  • zoo animals
  • elephants
Otwarty dostęp

Morphological, Morphometric and Radiographic Studies on the Skull of Lesser Mole-Rats (Nannospalax leucodon)

Data publikacji: 15 Sep 2022
Zakres stron: -

Abstrakt

Abstract

Lesser mole-rats (Nannospalax leucodon) are members of the Rodentia order’s Spalacidae family, and they are found in Northeastern Africa, the Balkans, Southeastern Europe, Central Asia, the Middle East, and Caucasia. The shape of the skull has a significant impact on the phenotypic appearance of animal heads, and although many domestic species have been studied, there is a lack of evidence on the macro-anatomical characteristics of the skeletal system in mole-rats. The current research was focused on the morphological, morphometric, and radiographic properties of lesser mole-rats skull in Bosnia and Herzegovina. The research was conducted on five lesser mole-rats from Bjelasnica Mountain, Bosnia and Herzegovina. We compared the results of the previously published studies, and we found a lot of similarities between Nannospalax leucodon in Bosnia and Herzegovina and Nannospalax ehrenbergi in North Iraq, as well as the Nannospalax nehringi from Eastern Anatolia.

Słowa kluczowe

  • morphology
  • neurocranium
  • radiography
  • rodents
  • splanchnocranium
Otwarty dostęp

Use of Probiotic Bacillus megaterium NCH 55 for Treatment of Subclinical Mastitis in Cows – Preliminary Study

Data publikacji: 15 Sep 2022
Zakres stron: -

Abstrakt

Abstract

The development and implementation of new and safe means of treating subclinical mastitis (SM) in the production process remains a pressing problem. Our study aimed to investigate the therapeutic effect of the Bacillus megaterium NCH 55 strain on cow SM. All animals with signs of SM were fed with a basic diet with probiotic’s addition of 15 g/per day. The experiment was conveyed in 30 consecutive days. Milk and blood were collected on the 7th, 15th, and 30th day of the experiment. Daily milk yield was increased by 32.2% and somatic cell count was decreased from 290.00±32.12 to 96.80±39.03 ths/cm3. A decrease in inflammation was indicated by a decrease in POM370 (by 2.2 times) and POM430 (by 2.8 times). No significant changes in the blood serum indices of cows were observed. A probiotic’s positive effect has been established on the treatment of SM. The probiotic B. megaterium NСH 55 can be considered as an alternative to antibiotics and other chemotherapeutic drugs for treating SM in cows.

Słowa kluczowe

  • cow
  • mastitis
  • milk
  • probiotics
Otwarty dostęp

Morphometric and Histochemical Features of the Harderian Gland in Rabbits with Different Types of Autonomous Regulation

Data publikacji: 15 Sep 2022
Zakres stron: -

Abstrakt

Abstract

The tonus of autonomous centers reflected in the morpho-functional features of the organs in mammals. The study aimed to establish the influence of the autonomous regulation and its’ typological peculiarities on the structural features of the rabbits’ Harderian gland. Clinically healthy male rabbits, four months old, weighing 3.6-3.9 kg, were selected for the research. Based on the study of heart rate variability, three types of autonomous regulation were outlined, according to which three groups of rabbits were formed: ST rabbits (sympathetic dominant regulation), PS rabbits (parasympathetic dominant regulation), and NT rabbits (combined sympathetic and parasympathetic regulation). After euthanasia, the Harderian gland was dissected in all animals. Histological specimens were prepared and a morphometric examination was performed. ST rabbits corresponded to the minimal indicators in the tubular alveoli in both parts of the gland, as well as the maximum indicators of capsule thickness. NT rabbits corresponded to the maximum values of the acini area in the pink lobe, and in the white lobe - the maximal values of the cross-sectional area of the tubular alveoli, its wall area, and the epithelium height. The maximum acini area corresponded to PS rabbits in the white lobe, and in the pink lobe - the maximum indicators of the tubular alveoli cross-sectional area, and epithelial height. The pink and white lobes’ structure of the rabbit’s Harderian gland was affected by the combined tonus of the sympathetic and parasympathetic centers. The findings elucidate the regulatory and trophic effects on the Harderian gland in rabbits.

Słowa kluczowe

  • Harderian gland
  • rabbits
  • tubular alveoli
  • morphometry
  • autonomous regulation

Zaplanuj zdalną konferencję ze Sciendo