Jose Pedro Araujo

Instituto Politécnico de Viana do Castelo | IPVC · Grupo Disciplinar de Ciências Agronómicas e Veterinárias

Entire male (EM) pig rearing can be advantageous over castration. Higher feed efficiency, and leaner carcasses with higher protein and unsaturated fat contents, can be achieved. To add, higher welfare standards are also fulfilled. However, EM pork may be tainted, compromising therefore its quality. The aim of this study was to investigate and compa...

Having in mind a global sustainable agro-trade policy harmonization, this study explored the demand for improved farm animal welfare legislation in the BRIC (Brazil, Russia, India and China) countries and the USA. Results were discussed in comparison to European standards. Data were collected in the BRIC countries and the USA through questionnaires...

Electrolyte balance is essential to maintain homeostasis in the body. The most crucial electrolytes are sodium (Na+), potassium (K+), magnesium (Mg2+), chloride (Cl−), and calcium (Ca2+). These ions maintain the volume of body fluids, and blood pressure, participate in muscle contractions, and nerve conduction, and are important in enzymatic reacti...

Citation: Kowalczyk, A.; Gałęska, E.; Szul, A.; Łącka, K.; Bubel, A.; Araujo, J.P.; Ullah, R.; Wrzecińska, M. Fertility Rate and Assessment of the Cytoprotective Capacity of Various Types of Holothuroidea Extracts on Spermatozoa. Vet. Sci. 2022, 9, 189.

En ese trabajo analizamos la evolución estimada de la producción de leche de la UE hasta 2031, considerando la importancia cada vez mayor de la sostenibilidad y del cumplimiento de las normas medioambientales.

There is an increasing demand of spices and herbs in developing countries due to the beneficial effects of plants and herbal preparations as medicines. The basic technological process of obtaining extracts from natural raw materials is extraction, consisting in etching with solvents. Plant extracts are extremely complex, multicomponent mixtures obt...

Locomotor diseases in cattle can have various causes, both infectious and non-infectious. Infectious agents, such as bacteria, mainly cause finger dermatitis and interdigital dermatitis. In turn, the non-infectious factors include deformation of the claws and the animal housing system, including the bedding material in the barn. Orthopedic disorder...

The authors (Silva, S.R., et al.) unintentionally omitted to cite the article by O’Leary et al. [...]

The basic resource for monitoring animal health and welfare is the analysis of the hematological profile of blood. Cows' blood examination shows the ability of cattle to adapt to changing environment conditions as well as to pregnancy and lactation. Moreover, any reproductive disorders also affect the profile changes. The aim of the research was to...

The aim of this experiment was to investigate the cytoprotective potential of sea cucumber extract against cryopreserved sperm and semen fertility rate. Commercially available sea cucumber extract (Swanson, USA) was weighed out and placed in 3 glass tubes containing, respectively: 10 mL of water-glycerin solution (WG), water-ethanol (EC), glycerin-...

Background Intensive selection of modern pig breeds resulted in genetic improvement of productive traits while local pig breeds remained less performant. As they have been bred in extensive systems, they have adapted to specifical environmental conditions resulting in a rich genotypic and phenotypic diversity. In this study, European local pig bree...

Este trabalho teve por objetivo avaliar o comportamento dos animais em dois períodos do dia e simultaneamente identificar a frequência das principais atividades em sistema confinado. Foram observadas 20 aves (12♂ e 8♀), num espaço com 9m2, com piso em aparas de madeira, comedouros, bebedouros, e poleiros, através de uma porta em rede. Estas observa...

Vaz, P. S., Pais, J., Garcia, S. & Araújo, J.P. (2021, October, 29-30). Teste de desempenho produtivo em machos Aberdeen-Angus.

When compared to castrated animals, entire male pigs raising present advantages as higher feed efficiency, reduced feeding costs, reduced environmental impact, leaner carcasses with higher protein content and unsaturated fat and absence of the welfare issue of surgical castration. The objective of the study was to evaluate growth performance of ent...

Ferreiro, J.M., Araújo, J.P., Cerqueira, J.L., Kowalczyk, A., Cantalapiedra, J. & Iglesias, A., (2021, October, 29-30). Analysis of the scrotal circunference of young Galician blonde bulls using non-linear models of growth curves.

Araújo, J.P., Sobreiro. S., Cerqueira, J.L., Pereira Pinto, R., Kowalczyk, A. & Vaz-Velho, M. (2021, October, 29-30). Growth performance of Bisaro breed and commercial hybrid entire males on outdoor housing system. XXII Congresso de Zootecnia, Vila Real, Portugal

Objective of the study was to evaluate growth performance of entire males of two genotypes.

High-performance liquid chromatography determination of skatole levels in subcutaneous fat of entire male pigs fed with a supplemented finishing diet • Surgical castration without anesthesia of male piglets has been abolished in several European countries due to animal welfare concerns. • Castration is mainly used to prevent the development of the...

Specific animal-based indicators that can be used to predict animal welfare have been the core of protocols for assessing the welfare of farm animals, such as those produced by the Welfare Quality project. At the same time, the contribution of technological tools for the accurate and real-time assessment of farm animal welfare is also evident. The...

INTRODUCCIÓN En los últimos años y en la actualidad, el sector ganadero lechero se ha centrado en aumentar la productividad (Oltenacu y Algers, 2005) de tal manera que la raza Holstein Frísia representa alrededor del 80% de las vacas lecheras. El aumento en la producción provocó la disminución del rendimiento reproductivo y de la longevidad, aument...

INTRODUCCIÓN El análisis de la composición química y propiedades físicas de los ensilados es importante y necesaria para la correcta formulación del pienso y también para la determinación y resolución de problemas en la calidad del ensilado. El valor nutricional de los ensilados se refiere a la composición de nutrientes y digestibilidad del ensilad...

Araújo, J.P.P, Costa, H.R. & Cerqueira, J.O.L., (2021, May, 26-29). Avaliação de desempenho produtivo em cabritos da raça Bravia nos ecótipos do Alvão e do Gerês. I Congresso Nacional de Caprinicultura. Comunicação oral

Faria, L.M.G., Ferreira, A., Araújo, J.P. & Cerqueira, J.O.L., (2021, March, 12-13). Produtividade e composição do leite de vaca em explorações do Norte de Portugal.

Produtividade e composição do leite de vaca em explorações do Norte de Portugal.

Coronaviruses silently circulate in human and animal populations, causing mild to severe diseases. Therefore, livestock are important components of a "One Health" perspective aimed to control these viral infections. However, at present there is no example that considers pig genetic resources in this context. In this study, we investigated the varia...

ROHs are long stretches of DNA homozygous at each polymorphic position. The proportion of genome covered by ROHs and their length are indicators of the level and origin of inbreeding. Frequent common ROHs within the same population define ROH islands and indicate hotspots of selection. In this work, we investigated ROHs in a total of 1131 pigs from...

The conformation or type of a cow has proven to influence cow productivity and longevity. Morphological classification is an essential tool used to improve the conformation of cows, through the score of each animal. The present study aimed to perform the morphological classification in Holstein Friesian cows. Morphological classification of 1,823 d...

Background: Natural and artificial directional selection in cosmopolitan and autochthonous pig breeds and wild boars have shaped their genomes and resulted in a reservoir of animal genetic diversity. Signatures of selection are the result of these selection events that have contributed to the adaptation of breeds to different environments and prod...

Autochthonous pig breeds provide products of differentiated quality, among which quality control is difficult to perform and insufficient for current market requirements. The present research evaluates the predictive ability of near-infrared (NIR) spectroscopy, combined with chemometric methods as a rapid and affordable tool to assure traceability...

Coronaviruses silently circulate in human and animal populations, causing mild to severe diseases. Therefore, livestock are important components of a “One Health” perspective aimed to control these viral infections. However, at present there is no example that considers pig genetic resources in this context. In this study, we investigated the varia...

In this study, we identified copy number variants (CNVs) in 19 European autochthonous pig breeds and in two commercial breeds (Italian Large White and Italian Duroc) that represent important genetic resources for this species. The genome of 725 pigs was sequenced using a breed‐specific DNA pooling approach (30–35 animals per pool) obtaining an aver...

Il s'agit d'un article correspondant à une communication orale en conférence (IX Symposium of the Mediterranean Pig, Portalegre, Portugal, 3-5 Nov 2016)

Tracing autochthonous pig breeds with meat near-infrared spectra data pig

Genetic characterization of local breeds is essential to preserve their genomic variability, to advance conservation policies and to contribute to their promotion and sustainability. Genomic diversity of twenty European local pig breeds and a small sample of Spanish wild pigs was assessed using high density SNP chips. A total of 992 DNA samples wer...

Natural and artificial directional selection in cosmopolitan and autochthonous pig breeds and wild boars have shaped their genomes determining selective sweeps as final adaptation to different environmental conditions and production systems. In this study we analysed whole-genome re-sequencing data from 19 European local pig breeds, 3 cosmopolitan...

Este estudio tiene como objetivo evaluar la incidencia de cojera en las explotaciones lecheras en el norte de Portugal. Este estudio se llevó a cabo en 10 granjas en la región lechera del norte de Portugal, entre enero y mayo de 2018, a través de tres visitas a cada granja con un intervalo de dos meses entre cada visita. Se evaluaron 1410 animales,...

Models such as InraPorc enable the growth of pigs to be simulated and their nutrient requirements to be determined. However, so far, these models have not been applied to local breeds. We used InraPorc to determine the nutrient requirements of growing pigs from local breeds (H2020 European Union project TREASURE). Data on feed composition, allowanc...

Models such as InraPorc have been developed to simulate the growth of pigs and determine their nutrient requirements. These models have been applied largely to conventional breeds but so far not to local breeds. The aim of our study was to use InraPorc to determine nutrient requirements of growing pigs from local breeds in the H2020 European Union...

The aim of this work was to analyse the distribution of causal and candidate mutations associated to relevant productive traits in twenty local European pig breeds. Also, the potential of the SNP panel employed for elucidating the genetic structure and relationships among breeds was evaluated. Most relevant genes and mutations associated with pig m...

Proportion of successful reassignment using randomized groups of individuals. (TIFF)

Graph of cross-validation of DAPC. x axis reports the number of PC retained in each DAPC and y axis the proportion of successful outcome prediction. (TIF)

FST computed between each pair of pig populations. (DOCX)

Graph of BIC value vs. number of detected clusters. (TIF)

Nei’s genetic distances computed between each pair of pig populations. (DOCX)

Graph of α-score optimization of DAPC. (TIF)

Proportion of successful reassignment of the individuals to their specific breed. (TIFF)

The most likely number of clusters (K) in the analyzed dataset. a) plot of ln Pr(G|K) values as a function of the number of clusters for each of the 20 runs carried out for each K value using the program STRUCTURE. b) plot of K as the mean of the absolute values of L”(K) averaged over 20 runs divided by the standard deviation of L(K) between succes...

La utilización de razas locales en sistemas de producción alternativos presenta una serie de ventajas, como la gestión medioambiental, la biodiversidad y la producción agrícola sostenible orientada hacia un mercado de productos de calidad diferenciada, especialmente en áreas desfavorecidas. En este trabajo se estudió la influencia de dos sistemas d...

In Portugal, the traditional livestock system of the swine breed Bísara valorises a diversity of traditional foods to generate a multiplicity of products under Certified Quality System (DPO, PGI or STG). The overall objective of this work was to evaluate the effect of traditional and innovative feed resources on carcass traits of the Bísara breed....

Dois ensaios produtivos em 9 explorações associadas à confraria Gastronómica o Galo de Barcelos com mínimo de duas pesagens em cada exploração

Unlike in modern breeds, the knowledge on performance and management of local pig breeds is very limited. These are key aspects to be developed for their successful exploitation that requires strategies adapted to their specific productive and metabolic characteristics, quite different from those of modern pig breeds, to ensure their preservation a...

The objective of the present study is to evaluate the potential use of FT-NIRS for predicting intramuscular fat (IMF) and fatty acid groups (MUFA; PUFA; PUFA n-3, PUFA n-6; SFA) on pig grounded muscles. The research considered 160 fresh samples of Longissimus collected from 12 European local pig breeds (TREASURE * project). For every sample, lipids...

Models as InraPorc® have been developed to simulate pig growth and to determine nutrient requirements. They are largely applied to conventional breeds but so far not to local breeds. Our study aimed to use InraPorc® to determine nutrient requirements of growing pigs from local breeds in H2020 EU project TREASURE. Data on feed composition, allowance...

Unlike in modern breeds, the knowledge on performance and management of local pig breeds is very limited. These are key aspects to be developed for their successful exploitation that requires strategies adapted to their specific productive and metabolic characteristics, quite different from those of modern pig breeds, to ensure their preservation a...

INTRODUÇÃO Os sistemas de produção intensivos de bovinos leiteiros caraterizam-se por possuir instalações complexas destinadas ao alojamento de um grande número de animais em espaços confinados. Os cubículos são áreas de descanso individual que se destinam ao alojamento de vacas e a sua utilização pelos animais é influenciada por vários fatores, in...

Exploramos qué aspectos del comportamiento de las vacas lecheras proporcionan información sobre el grado de confort que les es ofrecido, el tipo de conductas anómalas más frecuentes y sus causas, y presentamos algunas recomendaciones para que los ganaderos puedan encontrar las mejores prácticas para aplicar en sus instalaciones.

Em 12 explorações de vacas leiteiras da região de Aveiro, mais precisamente nos concelhos de Ovar, Estarreja e Murtosa, com efetivos em ordenha entre 43 e 548 animais recolheram-se dados relativos aos equipamentos (cubículos e guilhotinas), através de visitas de campo às explorações e também elementos de contraste leiteiro do período de janeiro a j...

The teat-end hyperkeratosis is a pathology which causes pain and discomfort in dairy cows, increasing the risk of infection of the mammary gland. A total of 2,957 dairy cows from 43 farms in Portugal were examined to evaluate the teat-end, degree of hyperkeratosis and callosity on 11,828 teats. Factors related to milking management, characteristics...

Este trabajo presenta los resultados de una encuesta de datos demográficos y fenotípicos de 20 razas locales de cerdos en estudio en el proyecto H2020 TREASURE y incluí información de: parámetros demográficos, características morfológicas principales, parámetros reproductivos, informaciones adicionales a nivel de los efectivos (ex. Temperamento, in...

El objetivo de este estudio fue evaluar el crecimiento de cerdos alojados en un sistema hoop barn, en comparación con el confinamiento tradicional. Veinte cerdos de raza Bísaro, con 98,6±5,71 días de edad y 25,4±4,87 kg de peso vivo, se distribuyeron aleatoriamente en dos grupos: GR1 - hoop barn (2,4 m2/cerdo) con acceso al exterior (200 m2/cerdo);...

The production of rabbit`s meat using the flat deck cage systems, should consider a minimum space per animal. The stocking density should be assessed considering the effect on the animal welfare and productive capacities. The objective of this work was to study the growth of rabbits through fattening submitted to different densities. In a commercia...

El objetivo de este trabajo es analizar cómo afecta esta normativa a la formación en experimentación animal, incluyendo su incidencia en la docencia en a las Facultades de Veterinaria españolas. Para ello se compara la normativa de experimentación animal durante los últimos 20 años analizando las diferencias con respecto a los requisitos de formaci...

Este trabajo tiene como objetivo evaluar algunas características de las canales y de los cortes comerciales de la “Carne Barrosã-DOP”, para que sea posible tener una idea real del rendimiento de las canales y de las diferentes piezas cárnicas comerciales de la raza.

Para la evaluación del Bienestar Animal (BA) mediante protocolos de observación para la especie porcina se deberían tener presentes en primer lugar los requisitos del RD 1135/2002, de 31 de octubre, relativos a las normas mínimas de protección de la especie porcina. Las Directivas de la Unión Europea (UE) y el RD 1135/2002 profundizan en la mejora...

We studied the relationship between behaviour during milking with milking parlor management, measuring the occurrence of steps and kicks, and cow-relatedfactors. We also investigated the link between stepping and kicking during milking and udder health. A total of 2,903 direct observations of milking behavior were collected in 44 dairy herds in the...