Negative / Null Result ReportOpen accessVeterinary medicine
Mohamed Morsy, Souad abdemoaty, essam ahmed et al. · 2022 · Benha Veterinary Medical Journal
The current study was carried out to estimate the effect of environmental enrichments (EE) on behavioral patterns, growth performance, hematological, and hormonal changes in Japanese quail. A total number of 216 healthy Japanese quails 1 month old with an average body weight of 135.66±1.32 g were randomly assigned to three groups (72 birds each) and each group was divided into 3 replicates (24 birds each) with a sex ratio 1 male to 3 females according to the environmental enrichment within the pen. The first group had no environmental enrichment (control group), the second group was subjected
View details →Negative / Null Result ReportOpen accessVeterinary medicine
Narges Sotoudeh, Mohammad Reza Namavar · 2022 · Veterinary Medicine and Science
Abstract Background A combination of ketamine‐xylazine (K‐X) is frequently used for anaesthesia in rats. Sex and age affect this cocktail dosage. Ketamine causes a hypnotic effect by blocking NMDA receptors located on the dendritic spine of the CA1 region. Objectives The present study aimed to find the optimal dosage of K‐X and its association with the changes in dendritic spine number of the CA1 region for aged and young rats of both sexes. Methods We injected 150–4 mg/kg of K‐X in young and 100–2 mg/kg in aged Wistar rats intraperitoneally and recorded the onset time and duration of anaesthe
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Hamideh Keshavarzi, Caroline Lee, Tim Dyall et al. · 2022 · Frontiers in Animal Science
Sheep are gregarious animals that can form close inter-individual relationships. Social bonds are affected by environmental and within-animal factors, but there is limited understanding of individual factors that influence social relationships, in part due to the challenges of accurately measuring individual social proximity within a group. This study used geospatially precise RTK-GNSS localization devices (Real-Time-Kinematic Global Navigation Satellite System) to evaluate social proximity between individuals with different personality traits in small sheep flocks. First, unsupervised cluster
View details →Negative / Null Result ReportOpen accessVeterinary medicine
Hesham Azouz · 2019 · Egyptian Poultry Science
The objective of this study was to investigate the effect of dietary supplementation with turmeric (TU), hot pepper (HP), or a combination of them as a powder on productive performance and functional properties of table eggs local strain (Sinai strain) hens at late production phase . A total number of 105 Sinai hens, 59-wks-old were weighed individually and randomly distributed equally into seven experimental treatments of three replicates each. The experimental design consists of the following groups; the first group was fed the basal diet without studied supplements and served as a control.
View details →Negative / Null Result ReportOpen accessVeterinary medicine
Mengen Zhang, Rui Han, Anguo Zhang et al. · 2026 · Animals
This study explored the differences in slaughter performance, blood biochemical indices, and ruminal and colonic microbiota between 6-month-old male and female Small-tailed Han sheep, a typical meat-wool dual-purpose breed in China. Twenty weaned lambs (10 males and 10 females) with uniform body condition were reared under unified feeding management until 6 months of age, followed by slaughter sampling and microbial sequencing detection. Results showed that male lambs had significantly higher pre-slaughter live weight, carcass weight and serum ALP content than females ( p p p p = 0.001). Sex h
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Frauke Janelt, Johannes Kauffold, Haukur Lindberg Sigmarsson et al. · 2026 · Animals
The slaughter of pregnant sows remains a relevant concern in modern swine production, with prevalence rates reported from 1.5–13% in Europe. Considering fetal sensitivity during late gestation and legal restrictions on transport and slaughter, reliable assessment of fetal age is of considerable practical, ethical, and legal relevance. In this study, 70 pregnancies from low-prolificacy (purebred German Saddleback) and medium-to-high prolificacy genotypes (purebred German Landrace and Duroc × German Landrace hybrids) were repeatedly examined using transabdominal ultrasonography, with a total of
View details →Negative / Null Result ReportOpen accessVeterinary medicine
K. Mohammadpour, P. Shishehbor, A. Avand-Faghih et al. · 2013 · نامه انجمن حشرهشناسی ایران
Melon weevil, Acytopeus curvirostris persicus Thompson, is one of the most important pests of melons that is spread in the Middle East countries. In this study, diurnal and seasonal locomotor and flight activity of melon weevil were investigated under field condition using bucket traps (baited with conspecifics male and cucumber fruit) and also mating behavior pattern and its effect on fecundity (under semifield conditions) and fertility (under laboratory conditions). The results showed that both males and females of melon weevil have distinct daily activity. Two activity peaks were observed a
View details →Negative / Null Result ReportOpen accessVeterinary medicine
Muneer Wahab Saeed AL-Khafaji · 2016 · Kufa Journal for Veterinary Medical Sciences
The study was conducted on 40 Awassi sheep through the year 2014 from the flock reared in Faculty of agriculture / Kufa University. Five treatments included levels of flax (0.0, 2, 4, 6 and 8) %. Body weight in three ages (live weight at 6month, at 9months and at 12 months) was evaluated using variance analyses. Results showed a significant effect (p≤ 0.05) of flax in live body weight the highest BW6, BW9 and BW12 were in the males group that fed with 8% flax it's about 35.22, 46.06 and 58.22 kg respectively compared with the same level of diet flax in female group it's about 30.81, 37.26 and
View details →Negative / Null Result ReportOpen accessVeterinary medicine
Felista Mwangi, Areen Dallasheh, Mugagga Kalyesubula et al. · 2023 · Animals
This study investigated the effect of dietary flavour supplements on the preference, feed efficiency and expression of the sweet taste receptor family 1 members 2 and 3 ( T1R2 + T1R3 ), and sodium-glucose linked transporter 1 ( SGLT1 ) genes in the lambs’ small intestines. Eight, five-month-old, Israeli crossbred Assaf lambs were offered 16 different non-nutritive commercial flavours in rolled barley and ground corn. Capsicum and sucram were the most preferred non-aroma flavours ( p = 0.020), while milky ( p T1R2 , T1R3 and SGLT1 relative gene expression evaluated from the proximal jejunum bio
View details →Negative / Null Result ReportOpen accessVeterinary medicine
Sandra D. Taylor, Priscila B. S. Serpa, Andrea P. Santos et al. · 2022 · Journal of Veterinary Internal Medicine
Abstract Background A systemic and dysregulated immune response to infection contributes to morbidity and mortality associated with sepsis. Peripheral blood‐derived mesenchymal stromal cells (PB‐MSC) mitigate inflammation in animal models of sepsis. Allogeneic PB‐MSC administered IV to horses is well‐tolerated but therapeutic benefits are unknown. Hypothesis After IV lipopolysaccharide (LPS) infusion, horses treated with PB‐MSC would have less severe clinical signs, clinicopathological abnormalities, inflammatory cytokine gene expression, and oxidative stress compared to controls administered
View details →Negative / Null Result ReportOpen accessVeterinary medicine
S. A. Shamoon¹, M. N. Saleh² and N.Y.Abbo² · 2009 · Iraqi Journal of Veterinary Sciences
This study was conducted on 2 stages using 18 Awassi lambs with average body weight (45kg). Animals were divided into 3 groups of six lambs each. During the first stage, the groups of lambs were individually fed on one of the three rations, which consisted mainly of barley, wheat bran and soybean meal, and contain three graded levels of crude protein 14, 16 and 18% in addition to urea and wheat straw. During the second stage lambs were fed on the same ration after treating barely and wheat bran with formaldehyde. Lambs were fed for 10 days as preperiod and then five days for fecal collection,
View details →Negative / Null Result ReportOpen accessVeterinary medicine
Stephanie Bond, Renaud Léguillette · 2024 · Journal of Veterinary Internal Medicine
Abstract Background Nebulized administration of dexamethasone on cytokine regulation in horses with moderate asthma has not been investigated. Objective To investigate the changes in expression of inflammatory cytokine mRNA after nebulized administration of dexamethasone treatment of horses with moderate asthma. Animals Horses with naturally occurring moderate asthma (n = 16) and healthy control horses (n = 4). All horses were kept in a dusty environment during the study. Methods Prospective, parallel, randomized, controlled, blinded clinical trial. Blood endogenous cortisol, tracheal mucus, a
View details →Negative / Null Result ReportOpen accessVeterinary medicine
Virginia Rega, Stefanie Brause, Sabine BR Kästner et al. · 2025 · Journal of Feline Medicine and Surgery
Objectives The objective of this study was to compare the use of the feline Glasgow Composite Measured Pain Scale (CMPS-f) at home and in a veterinary hospital. The hypothesis was that pain-free cats would score higher in the CMPS-f when in a stressful situation than when calm and relaxed; that is, healthy but stressed cats could appear to be in discomfort or pain. Methods Healthy, non-painful adult cats owned by clinical staff were included in a prospective clinical trial with two observers (caregiver [CG] and researcher). Cats were scored by their CG at home (H), after arrival at the clinic
View details →Negative / Null Result ReportOpen accessVeterinary medicine
Bo Yang, Zhi Biao Nan, Yan Zhong Li · 2025 · Frontiers in Veterinary Science
IntroductionStanding milkvetch (Astragalus adsurgens) is widely distributed in the wild in Eurasia and North America and has been bred for cultivated forage in China. Yellow stunt and root rot disease caused by Alternaria gansuense is the primary disease of standing milkvetch. A. gansuense promotes the production of swainsonine in the plant. This study aimed to determine the safety of standing milkvetch that is infected with A. gansuense as forage for animals.MethodsTwo-week-old specific pathogen-free (SPF) male white mice were fed a commercial mouse feed (CMF), healthy plant feed (HPF) and di
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Tatik Hernawati, Suherni Susilowati, Tri Wahyu Suprayogi et al. · 2024 · Ovozoa: Journal of Animal Reproduction
One of the many efforts to increase the quality of livestock genetics is through artificial insemination (AI). Other than increasing it, AI can be conducted to preserve semen. A successful AI is determined by seminal quality, therefore, a method to preserve semen for a longer storage time is needed. The method used is adding an extender that fulfills prerequisites for a semen extender such as coconut water combined with egg yolk citrate extender. Coconut water is rich in carbohydrates, protein, vitamins, and antioxidants while egg yolk contains lecithin. This study aims to find out the Pote bu
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Andra DEGAN, Ruxandra TUDOR, Ruxandra COSTEA et al. · 2019 · Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca: Veterinary Medicine
General anesthesia produces different degrees of central nervous depression and changes in the peripheral circulation, therefore affecting the patient’s thermoregulatory mechanism. Moreover, the lack of proper, specially designed equipment for magnetic resonance imaging (MRI) environment monitoring can represent a challenge for the anesthetist. We examined the temperature variations correlated with different anesthetic protocols in dogs that underwent general anesthesia in order to evaluate changes in rectal and distal extremities temperature, before and after anesthesia. This study was conduc
View details →Negative / Null Result ReportOpen accessVeterinary medicine
B. Mobini · 2013 · Veterinární Medicína
The present investigation aimed to evaluate the histomorphometric features of the skin of the Iranian native sheep (Bakhtiari breed). A total of 24 apparently healthy Iranian Bakhtiari sheep, aged 1-2 years were analysed and categorised on the basis of sex (12 females and 12 males). Samples were taken as small pieces from different regions of the skin, fixed and stained with H&E. The quantitative evaluations of different regions of skin were carried out using lattice line graticule (5 × 5) and light microscopy. The Student t-test and one-way ANOVA were used to analyse the data and detect signi
View details →Negative / Null Result ReportOpen accessVeterinary medicine
ali kargarirezapour, somayye ghobadi, afshin zakeri · 2013 · Āsīb/shināsī-i Darmāngāhī-i Dāmpizishkī
Glucans derived from yeast cell wall are promising alternatives to antibiotics, as they have been shown to improve growth performance and stimulate the immune system of immature broilers. In this study we evaluated the effect of different levels of yeast beta-glucan (YBG) on some blood parametrs of broiler chickens. In a factorial experiment based on completely randomized design (the first factor: YBG levels: 0, 0.04 and 0.08% of basal diet and sex as a second factor) 144 day old chicks (72 male and 72 female) were selected and allocated to different treatments (three replicates of each treatm
View details →Negative / Null Result ReportOpen accessVeterinary medicine
Masato Katayama, Yukina Uemura · 2026 · Veterinary Sciences
Background: Feline chronic gingivostomatitis (FCGS) is refractory stomatitis in cats. The cure rate of tooth extraction selected as a primary surgical treatment is insufficient. Methods: 52 FCGS-suspected cats, including 22 tooth-extracted and 30 unextracted cats, were studied. Commercially available antiviral and antibacterial agents were orally administered as initial treatment, followed by the antiviral agent solely as maintenance therapy. We examined the influence of prior tooth extraction on the therapeutic efficacy of these two drugs by analyzing changes in some physical signs and clinic
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E. Milena Vazquez, Beatriz Romero, Raquel Diez et al. · 2026 · Frontiers in Veterinary Science
Optimizing the use of the existing anthelmintics has become a priority, as resistance is a growing concern worldwide and the development of novel antiparasitic drugs slow. The paper describes the pharmacokinetic interaction between the antiparasitic albendazole (ABZ) and the choleretic drug menbutone (MEN) in calves, when ABZ was administered orally (7.5 mg/kg) alone or with intramuscular MEN (10 mg/kg) (1 or 2 doses 24 h apart) to 12 animals. Blood samples were collected at 14 sampling points over 72 h, and plasma concentrations of ABZ, albendazole sulfoxide (ABZSO, active metabolite), and al
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Andrew S. Hanzlicek, Kate S. KuKanich, Audrey K. Cook et al. · 2023 · Journal of Veterinary Internal Medicine
Abstract Background Culture can be used for diagnosis and antifungal susceptibility testing in animals with fungal infections. Limited information is available regarding the diagnostic performance of culture and the susceptibility patterns of Histoplasma spp. isolates. Hypothesis/Objectives Describe the clinical utility of culture and the susceptibility patterns of Histoplasma spp. isolates causing histoplasmosis in cats and dogs. Animals Seventy‐one client‐owned animals, including 33 cats and 19 dogs with proven or probable histoplasmosis. Methods Culture was attempted from tissue or fluid sa
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Luana D. Felizari, Luke K. Fuerniss, Jonathan L. Beckett et al. · 2025 · Veterinary Sciences
This study evaluates the effects of a proprietary tannin blend (BX), supplemented with or without sodium monensin (MON), on beef cattle performance, carcass traits, and health. Steers ( n = 2986; initial shrunk body weight (SBW) 254 ± 9.2 kg) were allocated into 48 pens (61–62 steers/pen; 12 pens/treatment) fed for 230 d. Treatments included: (1) no feed additives (CTL); (2) BX (7.95 g/animal daily); (3) MON + Tylosin phosphate (TYL; 437.52 mg MON/animal daily + 80 mg TYL/animal daily); or (4) MON + BX (437.52 mg MON/animal daily + 7.95 g BX/animal daily). Data were analyzed in R 4.2.1 using a
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Pei-Chih Lee, Yuqing Yang, Kaywalee Chatdarong et al. · 2026 · Frontiers in Veterinary Science
IntroductionDry-preservation of gametes offers a promising alternative to cryobanking by potentially storing cells at ambient temperatures; however, successful preservation of whole oocytes remains limited by dehydration-induced cellular damages. This study evaluated whether intracellular delivery of trehalose via a membrane-permeable derivative, trehalose hexaacetate (6-O-Ac-Tre), could enhance dehydration tolerance of domestic cat cumulus–oocyte complexes (COCs), a relevant model for mammalian fertility preservation.MethodsCat COCs were incubated with 0, 3, 10, or 30 mM of 6-O-Ac-Tre to asse
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William Taylor Fair, Jeffrey Bryan Breeden, Thomas Wayne Atchley et al. · 2022 · Animals
Mesquite ( Prosopis L.) is considered an invasive browse species in most of the American Southwest. Mechanical intervention removes yields an excess of organic debris. Anecdotal evidence in the past has supported using such browse as feed for livestock. Thus, our objectives were to (1) determine the nutritive value and fermentation characteristics of silage produced with mesquite biomass, and (2) evaluate solvent treatment of mesquite biomass prior to ensiling. In Experiment 1, we evaluated mesquite inclusion rate (0, 250, 500, 750, or 1000 g kg −1 DM), length of fermentation (28, 56, or 84 d)
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Lina Fernanda Pulido-Rodríguez, Alfredo Manuel Franco Pereira, Fábio Luís Henrique et al. · 2025 · Veterinary Sciences
Shearing to improve heat dissipation is common in sheep farming. This study evaluated the influence of shearing on thermoregulatory responses of crossbred sheep from adapted breeds exposed to heat stress. Ten ewes were kept in a climate chamber exposed to heat stress (10–13 h), reaching 37 ± 1.0 °C for nine days, during two consecutive periods, without shearing, and then at 14 days after shearing, evaluating all variables. Rectal temperature, respiration rate, sweating rate, ocular surface temperature, and skin temperature were analyzed at 7, 10, 13, 17, and 20 h, and blood cortisol was analyz
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Jesús A. Quezada-Rubio, Alfredo Estrada-Angulo, Beatriz I. Castro-Pérez et al. · 2026 · Animals
Due to their specific properties, the autolyzed yeast Saccharomyces cerevisiae (SC) and bacterial Bacillus subtilis (BS) theoretically can have a synergistic effect when combined and offered in ruminant diets. Thus, the aim of this experiment was to evaluate the effect of their combination as feed additives on growth performance, dietary energy, carcass traits, and visceral organ mass in finishing lambs. For this reason, 48 Pelibuey × Katahdin lambs (98 ± 17 d age; initial weight = 20.25 ± 3.37 kg) were used in a feeding trial lasting 83 d. Lambs were blocked by weight and assigned to 24 pens.
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Sladojević Ž., Kasagić D., Kukolj B. et al. · 2013 · Veterinarski Glasnik
The objective of this work was to investigate the influence of housing conditions, number of farrowing and number of pigs in litter on weight loss in sows during lactation. The experiment included 60 sows, half breed developed by cross breeding of Big Yorkshire and Swedish Landrace in lactation. Body weight of the sows (kg) was determined 2nd, 7th, 14th, 21st and 28th day after farrowing. On the basis of the obtained values, there was calculated the difference in body weight between two consecutive investigation periods. The sows were divided into two groups and held in different housing condi
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Hélio Costa, Eloisa Saliba, Marco Bomfim et al. · 2020 · Animals
The aim of this study was to evaluate the effects of Zinc sulfate and propylene glycol (PG) on methane (CH 4 ) emission, nutrient intake, digestibility, and production in sheep grazing on a native Caatinga (Brazilian semi-arid savannah) pasture during the rainy season (from March to June 2014). Fifteen mixed Santa In s sheep, all non-castrated males, with initial body weight of 19.8 1.64 kg, and 4 0.35 months of age, were distributed in a complete randomized design into three treatments: control (CT) concentrate supplemented at 0.7% of body weight; CT + 300 mg of Zn/day; and CT + 2.5 mL of pro
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Dipankar Sardar, Md. Taslim Hossain, Rudranil Baidya et al. · 2024 · Veterinary Integrative Sciences
Gene editing in large animals like buffalo is challenged by mosaicism, where cells contain both wild-type and mutant alleles, complicating the creation of genetically modified F0 animals in a single step. Traditionally, electroporation is performed on zygotes post in vitro fertilization (IVF), but mature oocytes’ higher permeability suggests earlier intervention might reduce mosaicism and enhance editing efficiency. We hypothesized that the timing of electroporation before in vitro fertilization (IVF) can increase the rates of biallelic mutation for multiple gene knockout as the permeability o
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Emily E. Bray, Emily E. Bray, Kerinne M. Levy et al. · 2019 · Frontiers in Veterinary Science
Assistance dogs can greatly improve the lives of people with disabilities. However, a large proportion of dogs bred and trained for this purpose are deemed unable to successfully fulfill the behavioral demands of this role. Often, this determination is not finalized until weeks or even months into training, when the dog is close to 2 years old. Thus, there is an urgent need to develop objective selection protocols that can identify dogs most and least likely to succeed, from early in the training process. We assessed the predictive validity of two candidate measures employed by Canine Companio
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