Veterinarija ir Zootechnika

Volume 81, Issue 2 (2023): Veterinarija ir Zootechnika, April 2024

Full volume: Volume 81, Issue 2 (2023): Veterinarija ir Zootechnika

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The Effect of Dry Yeast and Folic Acid Treatment on the Reproductive and Physiological Aspects of Quail Stressed with Hydrogen Peroxide

Saad Mohammed Ali Al Nuaimmi Suha A. Rasheed

Pub. online: 14 Aug 2024 Type: Research Article

Open Access

Journal: Veterinarija ir Zootechnika Volume 81, Issue 2 (2023): Veterinarija ir Zootechnika, pp. 1–7

Abstract

Role of Melatonin in Attenuation of Vascular Ang 1–7 Reactivity via Oxidative Stress Enzymes and PI3K/AKT/eNOS Signalling Pathways in Induced Diabetic Rats

Nazar M. Shareef Mahmood Almas MR Mahmud Ismail M Maulood

Pub. online: 21 Aug 2024 Type: Research Article

Open Access

Journal: Veterinarija ir Zootechnika Volume 81, Issue 2 (2023): Veterinarija ir Zootechnika, pp. 8–21

Abstract

Effects of a Non-Fasting Moulting Treatment and Extended Cold Storage on Some Egg Quality Traits of a Commercial White Laying Hen

Metin Petek Ibrahima Mahamane Abdourhamane

Pub. online: 21 Aug 2024 Type: Research Article

Open Access

Journal: Veterinarija ir Zootechnika Volume 81, Issue 2 (2023): Veterinarija ir Zootechnika, pp. 22–29

Abstract

This study was aimed at investigating the effects of non-fasting moulting treatment and

extended cold storage on table egg quality traits of a commercial white layer hen. For this research,

360 eggs were collected from moulted and non-moulted flock four weeks after the end of the moulting

program. The hens in each group were allowed ad libitum access to water and their respective diets as

grain barley for the moulting group and standard layer feed for the control group during the moulting

period of 10 days and then a complete layer ration after the moulting program through the laying

period. Sample eggs of each of these two groups were numbered, weighed and further assigned to a

different storage period as daily fresh eggs: 15, 30, 45, 60 and 75 days. All eggs were stored between

4°C and 5°C and 55% and 60% relative humidity throughout the experiment. Egg weight, egg length,

egg width, shell strength, shell weight, shell thickness, yolk height, yolk diameter, yolk colour, albumen

height, albumen width, and albumen length were measured at each consecutive analysis period for

egg quality comparison. Non-fast moulting treatment significantly affected egg weight, egg-width,

egg length and breaking strength (P < 0.001, P < 0.001, P < 0.001 and P < 0.020). There were no

significant effects of the length of a cold storage period on the external quality traits of egg weight, egg

width, egg length and egg-shape index. Shell thickness and breaking strength of eggs were affected

significantly (P < 0.001 and P < 0.02) by the length of a storage period. The yolk height and yolk

colour scores were found to be significantly greater in eggs from the moulting group while all internal

quality characteristics were significantly affected by the length of a storage period (P < 0.001). In

conclusion, even if it was cold storage, egg quality tended to decline in the extended storage period and

non-fasting moulting treatment improved the external and internal egg quality.

Machine Milking Ability of Ewes of Tsigai, Improved Valachian, Lacaune Breeds and Their Crosses: Udder Morphological Traits and Milking Characteristics

Pavol Makovický Michal Milerski Peter Makovický All authors (7)

Pub. online: 21 Aug 2024 Type: Research Article

Open Access

Journal: Veterinarija ir Zootechnika Volume 81, Issue 2 (2023): Veterinarija ir Zootechnika, pp. 30–35

Abstract

Influence of Growth Retardation of Heifers on the Development, Production, Duration and Efficiency of Productive Lifespan of Dairy Cows

Yuriy Polupan Ruslana Stavetska Yuriy Melnyk All authors (4)

Pub. online: 22 Aug 2024 Type: Research Article

Open Access

Journal: Veterinarija ir Zootechnika Volume 81, Issue 2 (2023): Veterinarija ir Zootechnika, pp. 36–43

Abstract

Investigations on Effect of Bacillus Licheniformis BL11 Probiotic Formula on Antimicrobial Resistance in Commensal Poultry E. Coli Isolates

Dima Dobreva Valentina Urumova

Pub. online: 22 Aug 2024 Type: Research Article

Open Access

Journal: Veterinarija ir Zootechnika Volume 81, Issue 2 (2023): Veterinarija ir Zootechnika, pp. 44–53

Abstract

The aim of the present study was to investigate phenotype resistance profiles and some

genetic determinants in resident E. coli bacteria isolated from broilers whose ration was supplemented

with a probiotic formula containing a Bacillus licheniformis BL11 strain (Huvepharma, Belgium).

For bacteriological examination, cloacal swabs were collected at various intervals throughout the

study: from day-old, 14-day-old and 28-day-old chickens. A total of 300 swabs were collected for

bacteriological examination: 150 from control and 150 from probiotic-supplemented chickens. The

total number of E. coli strains isolated from control and experimental broilers was 214: 107 strains

from the control group and another 107 from birds that received a probiotic with the feed.

Among E. coli isolates from day-old broilers in the experimental group, the highest resistance

rate was observed against gentamicin (69.0%), followed by that against ampicillin and amoxicillin/

clavulanic acid (52.4%). Escherichia coli isolated from probiotic-supplemented broilers at 14 days

of age demonstrated statistically significantly higher rate of resistance (P ≤ 0.05) against cefotaxime

(51.6%) and ceftazidime (38.7%) compared with isolates from the control group (12.0%). Also, the

prevalence of E. coli strains resistant against amoxicillin/clavulanic acid in supplemented broilers

(35.5%) was insignificantly lower than the respective rate in control chickens (48.0%). At 28 days

of age, the resistance against ciprofloxacin in poultry E. coli isolates in probiotic-fed broilers was

significantly higher (P ≤ 0.01) than the resistance rate in non-supplemented birds (85.3% and 52.7%,

respectively). The resistance to ampicillin among the isolates from experimental broilers was statistically

significantly more common (P ≤ 0.01), i.e., 82.3%, as well as against third generation cephalosporins

(44.1%, 41.2%). The genetic analysis of resistance in commensal E. coli isolates revealed the presence

of bla CTX-M-1, tetA and QnrS genes. In conclusion, we should note that in our study related to the use of

Bacillus licheniformis BL 11 strain, a probiotic formula in broilers, no basic differences were observed

both in terms of the prevalence of resistance to chemotherapeutics and in terms of economic indicators

in the broilers in the control and experimental groups.

Growth Curve Analysis of Body Weight of Mixed-Sex Egyptian Native Geese (Anser Anser Domesticus) Using Three Nonlinear Mathematical Functions

Abel Olusegun Oguntunji Amer Makram Widya Pintaka Bayu Putra All authors (7)

Pub. online: 22 Aug 2024 Type: Research Article

Open Access

Journal: Veterinarija ir Zootechnika Volume 81, Issue 2 (2023): Veterinarija ir Zootechnika, pp. 54–61

Abstract

Use of Grape Marc Flour Supplementation in Laying Hens’ Diet on Laying Productivity, Egg Quality and Biochemical Parameters

Grigorova Grigorova Natasha Gjorgovska Maria Todorova All authors (4)

Pub. online: 22 Aug 2024 Type: Research Article

Open Access

Journal: Veterinarija ir Zootechnika Volume 81, Issue 2 (2023): Veterinarija ir Zootechnika, pp. 62–69

Abstract

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Volume 81, Issue 2 (2023): Veterinarija ir Zootechnika, April 2024

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