Carlos Bondan

• University of Passo Fundo

Background: Ovarian enlargement in mares can either be a physiological or pathological condition associated with neoplastic or non-neoplastic causes. Neoplasia is more prominent in elderly than young horses. Granulosa cell tumors are the most common neoplastic cause of ovarian enlargement, and thecoma is the rarest. Thecoma is a benign ovarian stro...

Bovine paratuberculosis causes chronic, incurable diarrhea and weight loss, resulting in decreased cattle production. The disease is caused by Mycobacterium avium subsp. paratuberculosis (MAP), an obligate intracellular mycobactin-dependent mycobacterium that replicates slowly in the host and has heightened environmental resistance. In countries wh...

A protocol to induce lactation was applied to non-pregnant gilts. In Experiment I, five gilts with estrus synchronized through oral supplementation of 20 mg Altrenogest for 18 d received: 10 mg estradiol cypionate (EC) on the last day of estrus expression (D0); 10 mg EC and 300 mg long-acting progesterone (P4) on D26; and two 0.53 mg doses of a pro...

The objective of this study was to evaluate and compare two chemical preservatives in terms of their sample preservation capabilities, considering the individual bacterial count (IBC) and time and temperature variables. Samples were collected in expansion tanks in three commercial dairy farms located in the northwest of Rio Grande do Sul, character...

As interações que ocorrem no sistema Integração Lavoura-Pecuária (ILP) são complexas, uma vez que, além da planta e do solo, existe a participação do animal. Em alguns lugares, otimizar esses três componentes juntos é um desafio, principalmente o uso do solo, da terra e dos recursos naturais presentes. Na região sul do Brasil, durante o período de...

A utilização do trigo de duplo propósito surge como uma estratégia agrícola para maximização do uso do solo, principalmente para produção de forragem e grãos visando potencializar recursos naturais nas estações outono e inverno no Rio Grande do Sul. O objetivo deste trabalho foi avaliar o efeito de doses de nitrogênio na produção de pré-secado e gr...

A utilização do trigo de duplo propósito surge como uma estratégia agrícola para maximização do uso do solo, principalmente para produção de forragem e grãos visando potencializar recursos naturais nas estações outono e inverno no Rio Grande do Sul. O objetivo deste trabalho foi avaliar o efeito de doses de nitrogênio na produção de pré-secado e gr...

An outbreak of spontaneous intoxication by the pseudofruits of the japanese grape (Hovenia dulcis) was observed in a flock of 270 sheep in Rio Grande do Sul, Brazil, resulting in the death of nine animals. The clinical picture was characterized by digestive, nervous, and respiratory alterations with progression to death after 15 to 48 hours. The ma...

Guttural pouch empyema is usually a consequence of upper respiratory tract infections, especially those caused by Streptococcus equi. In adult horses, empyema is a common disease, whereas considered rare in foals. The aim of this work was to report a case of unilateral guttural pouch empyema in a filly, with a focus on diagnostic and treatment appr...

The objective was to evaluate whether rotatinuous stocking management in dual-purpose wheat genotypes provides greater forage performance compared to the traditional rotational grazing management, which could become an alternative to ryegrass, once this new management strategy has been validated. Three dual-purpose wheat cultivars (BRS Pastoreio, B...

The search for forage cultivars that provide higher yields with quality in periods of forage shortage, whether in isolated or mixed management, is essential for livestock stability. Thus, the objective was to evaluate the forage performance and nutritive value of rye cultivars mixtures (BRS Progresso, BRS Serrano and Temprano) from different produc...

Ensiling is an essential technique for animal production due to the seasonality of forage production during the year. The use of winter cereals is an economic and environmentally viable alternative because it uses idle areas in winter. The mixture of winter cereals for silage meets the need to extend the harvest period, reduce risks and improve the...

Abstract: Rye (Secale cereale L.) is a crop that has dual aptitude of use, where in addition to the production of grains it can be used to cover the soil, as it has a high C / N ratio of the straw that can assist in the control of plants weed. Thus, this work aims to evaluate through metanalytical models, whether rye when used as a cover crop decre...

The objective of this work is to evaluate whether the overseeding of annual forage grasses in soybean contributes to the reduction of weed density for the subsequent crop, as well as provides forage to meet the demand for animal feed so that its ground cover does not interfere with subsequent winter crop yield. Two cultivars of dual-purpose wheat (...

Rye (Secale cereale L.) is a crop that has dual aptitude of use, where in addition to the production of grains it can beused to cover the soil, as it has a high C / N ratio of the straw that can assist in the control of plants weed. Thus, thiswork aims to evaluate through metanalytical models, whether rye when used as a cover crop decreases the inc...

A raça de bovinos Wagyu é originária do Japão e foi selecionada para características de qualidade da carne em decorrência da grande deposição de gordura entremeada as fibras musculares denominada de marmoreio, e atualmente ela é conhecida por produzir a melhor carne do mundo. No Brasil a raça chegou a aproximadamente 30 anos onde está sendo criada...

Introdução Culturas como milheto e sor-gos são espécies de crescimento intensivo, altamente produtivos e de elevado valor nutritivo. Ge-ralmente são estabelecidos em sucessão aos cereais de inverno e pastagens anuais, muito impor-tantes para sistemas de produção intensivos principalmente para bovinos confinados, vacas leitei-ras, novilhas e terneir...

A two-year-old male bovine of Aberdeen Angus breed with anorexia, weight loss, and apathy was reported for necropsy, being diagnosed with systemic tuberculosis and tuberculoid meningitis lesions. Bovine tuberculosis was observed and confirmed through the necropsy of granulomatous lesions, mainly in the lungs and regional lymph nodes; specific stain...

A 1-month-old uncastrated Ile de France male sheep was diagnosed with an opening in the left interventricular septal. The malformation was evidenced and confirmed through necropsy and observations of systemic histological lesions related to congenital heart disease, especially in the liver, lungs, and heart. Depending on the severity of the defect,...

This study describes the clinical and pathological picture of a disease followed by death in sheep raised for subsistence, characterized by difficulty in locomotion, sternal decubitus, severe dyspnea, opisthotonos, and pedaling movements, followed by death. The disease occurred in February 2020 in the northern state of Rio Grande do Sul, Brazil, du...

The lactation induction protocol is a new possibility to reduce the non productive time of cows that are not pregnant and not being milked due to different factors. Therefore, this study aims to evaluate the effectiveness of a lactation induction protocol on the production of milk and its chemical and cellular composition. For this purpose, we comp...

O trabalho tem como objetivo avaliar se a sobressemeadura de gramíneas forrageiras anuais em soja contribui para a diminuição da densidade de plantas daninhas para a cultura subsequente, bem como proporciona forragem para atender a demanda de alimento animal de forma que sua cobertura do solo não interfira no rendimento da cultura subsequente de in...

O centeio (Secale cereale L.) é uma cultura que apresenta dupla aptidão de uso, onde além da produção dos grãos pode ser usada para cobertura do solo, pois apresenta elevada relação C/N da palhada que pode auxiliar no controle de plantas daninhas. Dessa forma, esse trabalho tem como objetivo avaliar através de modelos metanalíticos, se o centeio qu...

Introdução: Os bovinos Wagyu são originários do Japão e foram selecionados para características de qualidade da carne em decorrência da grande deposição de gordura entremeada as fibras musculares denominada de marmoreio, atualmente ela é conhecida por produzir a melhor carne do mundo. No Brasil a raça chegou a aproximadamente 30 anos onde é criada...

Twin birth is a complex condition observed in most livestock animals, when the female gives birth to two or more offspring, generally out of the same mating. In cattle, it is a rare condition (3 to 5%) and depends on the genetic background and environmental factors. Twin birth is a result of multiple ovulations, being more common in dairy rather th...

Background: Equine pituitary pars intermedia dysfunction, also known as equine Cushing’s syndrome, is a neurodegenerative disease. An important risk factor for Cushing’s is advanced aging and it is the most common endocrine disorder in older horses. The prevalence in horses aged over 10 and 15 years is reported as 9.3% and 21%, respectively. Due to...

Cattle tick fever (CTF) causes significant economic losses in the livestock sector. The pathogenic action of the hemoparasites is associated with anemia, weight loss, abortion and reduced productivity, which result with animal death. Programs to prevent CTF involve several procedures, including immunization, chemoprophylaxis and use of ectoparasiti...

The characterization of vaginal microbiota will help to understand some of the reproductive problems and mechanisms to improve cattle reproduction. The objective of this study was to characterize the vaginal microbiota of cyclical Holstein cows with different parturition orders using 16S rDNA sequencing. Animals were submitted to an estrus synchron...

The objective of this study was to compare the functions of Wilmink and Ali and Schaeffer with Legendre polynomials in random regression models using heterogeneous residual variances for modeling genetic parameters during the first lactation in the Holstein Friesian breed. Five thousand eight hundred and eighty biweekly records of test-day milk pro...

The intensification of the use of artificial insemination in the swine industry has increased the interest to develop proper conditions to store semen better for longer periods of time without affecting its fertility. Trolox is a vitamin E analog with antioxidant property to prevent oxidative stress. Therefore, the objective of this study was to ev...

The objective of this study was to identify a nonlinear regression model that better describes the milk production and the percentages of fat and protein curves, and to identify the season and age of calving that result in higher productions. For the analysis, 8,047 records of milk production and percentages of fat and protein obtained from 1,330 H...

Objetivou-se comparar um modelo multi-característica padrão com modelos de análise de fatores (AF) e de componentes principais (CP) para estimar parâmetros genéticos para a produção de leite no dia do controle (PLDC) de vacas da raça Holandesa. O arquivo de trabalho constituiu-se de 4.616 registros mensais de PLDC de primeiras lactações de vacas da...

The objective was to compare a standard multi-trait (MT) analysis model with factor (FA) and principal components (PC) analyses models to estimated genetic parameters for Holstein cows test day milk production (TD). The data file was composed by 4.616 TD at first lactation registers. The TD was grouped into ten monthly classes of lactation, from th...

The aim of this study was to investigate the land use practiced on family farms (FF), managed under crop-livestock integration (CLP) in the watershed and to evaluate the quality of milk. 14 FFs were characterized and grouped regarding soil use (Group 1, 2 and 3) and the quality of milk was monitored during the months of May, 2010 to February 2011....

Remoção de corpo estranho esofágico por endoscopia rígida em cágado pescoço de cobra (Hydromedusa tectifera): aspectos anes-tésicos e cirúrgicos Removal of foreign body esophagus by rigid endoscopy in chelid turtle snake neck (Hydromedusa tectifera): anesthetic and surgical aspects Resumo O objetivo deste trabalho é descrever um caso de remoção de...

Estrus synchronization with progesterone is commonly used in farms with better reproductive control. Free radicals production, i.e. oxidative stress, is associated with progesterone levels. The oxidative stress is responsible for aggression to the cellular membrane, leading to a lise and lipoperoxide formation. In this work, the antioxidant compens...

The objective of the present study was to describe the influence of supplementation with selenium and vitamin E on the protein and oxidative profiles of lambs experimentally infected with Haemonchus contortus. Thirty female lambs were divided into four groups as follows: G1 (n=10): infected animals; G2 (n=10): infected and supplemented; G3 (n=5): c...

The objective of the present study was to describe the influence of supplementation with selenium and vitamin E on the protein and oxidative profiles of lambs experimentally infected with Haemonchus contortus. Thirty female lambs were divided into four groups as follows: G1 (n=10): infected animals; G2 (n=10): infected and supplemented; G3 (n=5): c...

The objective of the present study was to evaluate different reproductive parameters of ram lambs treated with sodium fluoride. Spermogram, indicators of seminal oxidative profile, seminiferous tubules diameter and cell height of the testicular epithelium, epididimus and vas deferens were analyzed. Twelve 5-month-old ram lambs were used. They were...

O presente estudo objetivou avaliar as características espermáticas, os indicadores do metabolismo oxidativo do sêmen, o diâmetro dos túbulos seminíferos e a altura do epitélio testicular, do epididimário e do canal deferente de ovinos tratados com fluoreto de sódio. Foram utilizados 12 ovinos, com idade aproximada de cinco meses. Os animais foram...

Ovine toxoplasmosis is a major cause of abortion and placentitis. Lambs with congenital infection are born with encephalitis. Abortions occurred between May and August 2006 in an estate in Três Palmeiras, southern Brazil. This study aimed to assess the frequency of abortion associated with toxoplasmosis among ewes in southern Brazil using indirect...

Anemia due to worm infection is a major cause of loss in the sheep industry, due to deaths, drop in average daily gains and long recovery time following treatment. The present experiment was aimed at evaluating the oxidative status and the recovery of red blood cell (RBC) profile in lambs with induced anemia by bleeding, treated or not with dextran...

Intoxication caused by Senecio sp is characterized by irreversible damage to liver cells and may be associated with oxidative stress. The aim of this study was to evaluate the effects of intoxication by Senecio sp on lipoperoxidation, antioxidant defenses, and the osmotic resistance of erythrocytes in cattle. Blood samples from 30 intoxicated anima...