Levels of substitution of inorganic mineral to amino acids complexed minerals on old laying hens.

This study was conducted with the objective of evaluating the impact of replacing inorganic mineral sources (IM) with amino acid complexed minerals (AACM) in laying hens' diets on performance, egg quality, bone, and intestinal health. The effects of 4 different diets with varying levels of AACM substitution were evaluated on 400 Lohmann White hens aged 78-98 weeks. The control diet contained only IM sources at levels of 60, 60, 7, 40, 0.

Evaluating the effect of optimal zinc amino-acid complex supplementation in laying pullets on performance and zinc retention.

This study investigated the optimal dietary intake of zinc amino acid complex (Zn-AAC) for white-layer pullets, focusing on their productive performance, biochemical profile, organ biometry, and body zinc retention. The study involved 360 Dekalb White pullets (average weight: 433 ± 4.42 g) aged from 6 to 16 weeks and distributed into 6 treatments with 6 replications each.

Correction: Medeiros-Ventura et al. The Impact of Phytase and Different Levels of Supplemental Amino Acid Complexed Minerals in Diets of Older Laying Hens. 2023, , 3709.

To allow the original publication to be better understood [...

Complexed amino acid minerals vs. bis-glycinate chelated minerals: Impact on the performance of old laying hens.

The present study was to evaluate the effect of trace minerals (Zn, Mn, and Cu) from complexed amino acid minerals (ZMCAA) and bis-glycinate chelated minerals (ZMCGly) in laying hen diets on performance, internal and external egg quality, yolk mineral deposition, intestinal morphometry, and bone characteristics. From 78 to 98 weeks of age, 400 White LSL-Lite strain laying hens were distributed in a randomized design with 4 treatments with 10 replicates per treatment. Treatments were distributed in a 2 × 2 factorial arrangement using either Zn, Mn, and Cu of ZMCAA or ZMCGly source at 2 levels: low (20, 20, and 3.

The Impact of Phytase and Different Levels of Supplemental Amino Acid Complexed Minerals in Diets of Older Laying Hens.

A study was conducted to evaluate the effects of different sources and levels of supplemental amino acid-complexed minerals (AACM), with and without enzyme phytase (EZ). A total of 512 Dekalb White laying hens at 67 weeks of age were used in a 2 × 3 + 2 factorial arrangement of 8 treatments and 8 replications each. The main effects included EZ supplementation (600 FTU kg) and AACM inclusion level (100%, 70%, and 40% of inorganic mineral recommendations), plus two control treatments.

TOMOGRAPHIC ATTENUATION OF THE HEPATIC PARENCHYMA OF ADULT FREE-RANGING AND CAPTIVE BOAS ().

Improperly managed care conditions for reptiles can lead to clinical problems, including those of nutritional origin. A diagnostic tool to aid in the assessment of hepatic lipidosis is warranted. Evaluation of attenuation using quantitative computed tomography has a variety of indications in animals and permits the standardization of hepatic computed tomography (CT) reference values, aiding in the diagnosis of lipidosis.

CT features of feline lipiduria and renal cortical lipid deposition.

Objectives: The aims of this study were to document the presence and prevalence of feline lipiduria and renal lipid deposition on CT, and to search for associations between the presence of lipiduria and sex, urinary tract abnormalities and urolithiasis.

Methods: The CT examinations of 252 cats were reviewed for the presence of an antigravitational hypodense bubble in the urinary bladder with density values between -180 Hounsfield units (HU) and -20 HU. To identify associations between lipiduria and sex, urinary tract abnormalities and urolithiasis, Fisher's exact test was used.

OSTEODENSITOMETRY AND TOMOGRAPHIC FINDINGS IN FOUR CAPTIVE GIANT SOUTH AMERICAN TURTLES () WITH METABOLIC BONE DISEASE.

Giant South American turtles () are at a risk of extinction because of the rapid decline in their population over the last few decades. Metabolic bone disease (MBD) is common in captive testudines, but is often not diagnosed until a later stage. The authors present the cases of four captive giant South American turtles with carapace deformity secondary to MBD that underwent computed tomography (CT) scans of the carapace bones and vertebral column.

QUANTITATIVE COMPUTED TOMOGRAPHY OF HEALTHY ADULT BOAS ( BOA CONSTRICTOR).

The evaluation of radiodensity using quantitative computed tomography (QCT) has several indications in animals. It allows for standardization of reference values for bone densitometry and helps in the clinical diagnosis of diseases. Currently, there is a lack of such data in the literature for Boa constrictor constrictor.

Determination of baseline values for routine ophthalmic tests in bearded capuchin (Sapajus libidinosus).

Background: Establish baseline values for ophthalmic diagnostic tests in Sapajus libidinosus.

Methods: Ophthalmic diagnostic tests, namely Schirmer tear test 1 (STT-1), intraocular pressure (IOP), B-mode ultrasound, culture of the bacterial conjunctival microbiota, and conjunctival exfoliative cytology, were performed in 15 S. libidinosus.

Development of a finite element model of the ligamentous cervical vertebral column of a Great Dane.

Cervical spondylomyelopathy (CSM), also known as wobbler syndrome, affects mainly large and giant-breed dogs, causing compression of the cervical spinal cord and/or nerve roots. Structural and dynamic components seem to play a role in the development of CSM; however, pathogenesis is not yet fully understood. Finite element models have been used for years in human medicine to study the dynamic behavior of structures, but it has been mostly overlooked in veterinary studies.

USE OF COMPUTED TOMOGRAPHY FOR INVESTIGATION OF HEPATIC LIPIDOSIS IN CAPTIVE CHELONOIDIS CARBONARIA (SPIX, 1824).

Computed tomography is a sensitive and highly applicable technique for determining the degree of radiographic attenuation of the hepatic parenchyma. Radiodensity measurements of the liver can help in the diagnosis of hepatic lipidosis in humans and animals. The objective was to investigate the presence of hepatic lipidosis in captive red-footed tortoises (Chelonoidis carbonaria) using computed tomography.

Quantitative computed tomography of the liver in juvenile green sea turtles (Chelonia mydas).

Quantitative computed tomography (QCT) is a highly sensitive, applicable technique for determining the x-ray attenuation of organs. This technique reveals great precision in the detection of alterations in the x-ray attenuation of hepatic parenchyma, although the lack of studies establishing normal values limits its application in wild animals. The objective of this study was to establish mean hepatic attenuation values in four healthy juvenile sea turtles (Chelonia mydas) using QCT.