Cesar Henrique Espírito Candal Poli

Cesar Henrique Espírito Candal Poli
Universidade Federal do Rio Grande do Sul | UFRGS · Departamento de Zootecnia

About

100
Publications
18,680
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896
Citations
Citations since 2017
29 Research Items
475 Citations
2017201820192020202120222023020406080100
2017201820192020202120222023020406080100
2017201820192020202120222023020406080100
2017201820192020202120222023020406080100
Introduction
Skills and Expertise

Publications

Publications (100)
Article
Full-text available
Under the current scenario for climate change, Bromus valdivianus Phil. (Bv), a drought-resistant species, is an option to complement Lolium perenne L. (Lp) in temperate pastures. However, little is known about animal preference for Bv. A randomised complete block design was used to study ewe lamb's preference between Lp and Bv during morning and a...
Article
Maternal behavior has been related to ewe's reactivity, as more reactive ewes might have greater risk of presenting worse maternal ability. This study aimed to determine the association between maternal behavior score (MBS) of Corriedale ewes with their physiological and behavioral variables measured at weaning of their offspring within two handlin...
Article
Full-text available
This study investigated the effects of supplementing lamb diets with plant bioactive compounds α-tocopherol, tannin and the association of both on lamb growth, blood and meat characteristics. Forty male lambs were housed in individual pens and assigned to four treatment groups (10 animals/group), where, for 62 d, they were fed: 1) a basal diet with...
Preprint
Full-text available
Tropical erect grass pastures have high forage production potential in subtropical and tropical regions of the world. However, in this kind of pasture, the body weight gain of weaned lambs is usually below of their potential. We determined the effect of pasture height of an erect tropical grass, consequently its structure, on intake and performance...
Article
Full-text available
The present study assessed the influence of the type of the tropical pastures on lamb body weight (BW) gain and meat quality. Fifty-four lambs were allocated to three grazing pastures: (1) AG — Aruana grass (Panicum maximum cv. IZ-5); (2) PP — pigeon pea legume (Cajanus cajan cv. Anão); and (3) CS — contiguous swards, half of the paddock with AG an...
Article
Nutritional requirements at the end of gestation in ewes carrying multiple fetuses are rarely fully met in pasture production systems. Thus, concentrate feeds entail an alternative for increasing herd productivity. However, daily offer of complementary feed in extensive livestock production systems is not always possible due to climatic or geograph...
Article
Full-text available
This study aimed to determine the physiological and hematological parameters of sheep in Brazil. Therefore, 5,081 observations were used from previous experiments with animals from different Brazilian regions with the time of day, gender, breed, age, physiological characteristics, hematological and climatic variables. The animals were classified ac...
Article
Full-text available
Tropical pasture canopy characteristics can alter lamb ingestive behavior. Our study evaluated the ingestive behavior of young lambs in different tropical pastures to identify which variables interfere in their grazing activity. Two years of study were carried out with 54 weaned lambs distributed in three different pasture canopies: 1) monoculture...
Article
Full-text available
The aim of this study was to evaluate the effects of concentrate supplementation on the performance and ingestive behaviour of lambs grazing tropical grasslands of Panicum maximum cv. IZ-5 and its effect on pasture characteristics. Different levels of daily supplementation with concentrate were compared: no supplementation; or supplemented at 1.5%...
Article
Full-text available
Knowledge of free-living stages of endoparasite population ecology may guide their control in domesticated ruminants. Our objective was to evaluate sheep gastro-intestinal nematode (GIN) L3 distribution in tropical pasture profiles (grass and legume). Three different swards (treatments) were compared: 1) grass-only (G), 2) legume-only (L), and 3) o...
Article
Full-text available
A atividade pecuária no Brasil é basicamente representada pelo sistema pastoril. No entanto as adversidades edafoclimáticas promovem uma falta de uniformidade na oferta e qualidade de forragem, acarretando na maior intensificação dos sistemas de produção. A busca por alternativas de alimentação visando à melhoria no desempenho animal, tem sido obje...
Article
Plant extracts have been widely used in animal production systems due to the benefits promoted by their bioactive components, mainly through their antioxidant effects and positive effects on animal growth, health and meat quality. We determined whether bioactive compounds from grape (Vits vinifera), olive (Olea europaea) and pomegranate (Punica gra...
Article
Full-text available
O objetivo do experimento foi analisar o desempenho reprodutivo de 42 vacas mestiças Angus primíparas aos 24/25 meses que receberam ou não um suplemento a 0,8% do peso corporal. O suplemento, com 14% proteína bruta e 70% de nutrientes digestíveis totais, foi fornecido por 30 dias pré-acasalamento, no período de transição entre pastagem cultivada pa...
Preprint
Full-text available
Tropical sward characteristics can alter lamb ingestive behavior. Our study evaluated the ingestive behavior of young lambs in different tropical pastures to identify which variables interfere in their grazing activity. Two years of study were carried out with 54 weaned lambs distributed in three different swards: 1) monoculture of a upright grass,...
Article
Full-text available
The efficiency of grazing ruminant production systems is directly associated to the animals' ingestive behavior, and to structural characteristics of the pastures. The objective of this study was to evaluate the ingestive behavior of young lambs grazing three different heights of Capim Aruana (Panicum maximum). The experiment was carried out in two...
Article
Full-text available
Sheep production on pasture plays an important role in subtropical climates around the world, with great economic and environmental relevance to those regions. However, this production is much lower than its true potential in subtropical regions, largely due to lack of knowledge of how to feed grazing lambs, and mitigate gastrointestinal parasite i...
Article
Aimed at understanding how lamb production systems can affect sward structure in tropical grass pastures, the productive, structural and morphological characteristics of Tifton 85 (Cynodon spp.) pasture were evaluated in four systems: non-weaned and non-supplemented lambs (NW); non-weaned lambs receiving concentrate supplementation in creep feeding...
Chapter
Full-text available
O aumento da população no meio urbano no século XX, distanciando as pessoas do meio produtivo, associado ao aumento do uso de insumos e novas tecnologias no campo, tem gerado inseguranças em relação à qualidade do produto por parte dos consumidores. Essa realidade tem promovido um grande interesse no conhecimento dos fatores que afetam a qualidade...
Article
Tropical pastures can be important natural sources of antioxidant compounds and may impact production and quality of animal protein with repercussions on human health. The objective of this study was to evaluate the concentrations of α-tocopherol, condensed tannin (CT) and nutritional values of important tropical species used in grazing. The specie...
Article
Full-text available
ABSTRACT The objective of the present study was to evaluate, through a meta-analysis, the effects of feeding systems and tocopherol levels found in the diet of lambs on qualitative characteristics of their meat. A search of the computerised literature in Science Direct databases, PubMed, Scopus, and SciELO virtual library was carried out to select...
Article
Knowledge of free-living stages of endoparasite population ecology may guide their control in domesticated ruminants. Our objective was to evaluate sheep gastro-intestinal nematode (GIN) L3 distribution in tropical pasture profiles (grass and legume). Three different swards (treatments) were compared: 1) grass-only (G), 2) legume-only (L), and 3) o...
Conference Paper
Plant bioactives can potentially benefit herbivores through their effects on health and nutrition. The objective of this study was to determine the importance of antioxidant polyphenols and terpenes on the ability of lambs to self-select these compounds when challenged by a parasitic infection and the subsequent impact on their health and productiv...
Article
Full-text available
Global warming, as a consequence of excessive CO2 production mainly due to anthropogenic actions, is one of the main concerns of society due to the effects it can cause in the survival of humans, plants and animals. Several climatic consequences have already been reported, such as warming the oceans and changing biodiversity in various regions of t...
Article
Plant bioactives can potentially benefit herbivores through their effects on health and nutrition. The objective of this study was to determine the importance of polyphenols and terpenes on the ability of lambs to self-select these compounds when challenged by a parasitic infection and the subsequent impact on their health and productivity. Thirty-...
Article
Full-text available
Sensor-based technologies are becoming increasingly available and can be used to automatically gather long-term data about animal behaviour. With this information, it is possible to assess the circadian rhythm of activity and monitor its response to internal and external factors. Identifying irregularities in this rhythm may indicate animal health...
Conference Paper
Full-text available
Feeding supplies at late pregnancy, of multiple foetus ewes are rarely totally achieved only with forage offer. Therefore, concentrate feeding are a usual strategy to improve the heard productivity. However, the daily delivery of concentrate on the extensive sheep production systems, like those practiced in Southern Brazil, Chile, Uruguay, Western...
Article
Full-text available
The present study aimed to define the most appropriate management for a natural grassland during winter so as to improve its botanical composition and forage nutritive value during the subsequent spring. The experiment was conducted in an 8.4-ha Pampa biome natural-grassland area and divided into 12 0.7-ha paddocks for 196 days. During the first 84...
Poster
Full-text available
The supplementation with concentrate or tropical leguminous improve the nutritional supply and performance of lambs grazing tropical grasslands and may have some influence in the diurnal behaviour. The aim of this study was to evaluate the effects of concentrate and tropical leguminous on behaviour of lambs grazing tropical grasslands.
Article
Full-text available
Mortality of perinatal lambs and low weight at weaning cause huge liabilities to farmers. Current study describes maternal-filial behavior and evaluates the use of maternal behavior score (MBS) to estimate the behavior of ewes and lambs soon after birth, and correlate it with lamb mortality and performance during lactation. Thirty-seven Corriedale...
Conference Paper
Full-text available
This study assessed the effect of food restriction during different periods of ewe pregnancy on milk production and lamb growth. Thirty-five adult pregnant ewes were assigned to four treatments (7–10 animals/treatment), which varied in the period when food restriction (removal of a supplement fed at 150 g/kg BW/day) was applied: first third period...
Article
Full-text available
Sensory characteristics of meat from different animal types, including cattle (Angus and Brangus) and buffalo raised at pasture, and information on socio-demographic determinants of consumer preference were evaluated. Samples of roasted rib eye were cut and served in a disordered and monadic manner to 188 untrained tasters. A nine-point hedonic sca...
Article
Full-text available
This study assessed the effect of food restriction during different periods of ewe pregnancy on milk production and lamb growth. Thirty-five adult pregnant ewes were assigned to four treatments (7–10 animals/treatment), which varied in the period when food restriction (removal of a supplement fed at 150 g/Kg BW/day) was applied: first third period...
Article
Full-text available
To test the accuracy of creatinine as a marker for estimating urinary volume and its use as a nutritional index, the possible interference of forage intake and forage quality over creatinine excretion was evaluated. For this, sheep were fed different levels of pearl millet (Pennisetum americanum (L) Leeke) or Italian ryegrass (Lolium multiflorum La...
Article
Full-text available
This study examined tropical pasture contamination dynamics under different feeding systems for finishing lambs. The experiment aimed to evaluate the vertical distribution of gastrointestinal helminth infective larvae (L3) in erect grass subjected to grazing and to assess the parasite load and its impact on lamb performance in three production syst...
Article
Full-text available
The use of shearing during pregnancy has been described as a tool for improving productivity in sheep and for minimizing perinatal mortality in lambs through the increase of fetal development. This study assessed the effect of shearing around 74 days of gestation on the productive performance of ewes and lambs during the first month of life. Forty...
Chapter
Full-text available
Las forrajeras tropicales cubren una importante área del mundo, presentando un gran potencial para la producción ovina (Poli et al., 2012, Monteiro et al., 2009, Carvalho, 2004), y el uso racional de estas especies vegetales puede ayudar de forma significativa en el aumento de la producción de carne y en el fortalecimiento de la cadena productiva d...
Article
Full-text available
The influence of early weaning and concentrate supplementation strategies on sward characteristics, forage chemical composition and lamb productivity were evaluated in four production systems on Tifton-85 pasture: suckling lambs not supplemented until slaughter; suckling lambs supplemented with concentrate in creep feeding until slaughter; early-we...
Conference Paper
Full-text available
Abstract Text: We evaluated the sensory characteristics of meat from different animal types, including cattle (Angus and Brangus) and buffalo raised on pasture, and collected information on socio-demographic determinants of consumer preference. Samples were roasted rib eye, sliced and served in a disordered and monadic manner to 188 untrained taste...
Article
Data from twenty-two digestibility trials were compiled to examine the relationship between faecal N concentration and organic matter (OM) digestibility (OMD), and between faecal N excretion and OM intake (OMI) by wethers fed tropical or temperate forages alone or with supplements. Data set was grouped by diet type as follows: only tropical grass (...
Article
Full-text available
The current research was carried out to evaluate the use of crude protein and fibre components in faeces for estimating intake and digestibility in sheep fed with pearl millet (Pennisetum americanum (L.) Leeke). The equations were developed from four trials in metabolism cages with 16 sheep in each trial. Each animal received a different quantity o...
Conference Paper
Full-text available
O objetivo deste trabalho foi determinar o efeito dos métodos de pastoreio aplicados durante o inverno, nos dois terços iniciais da gestação de ovelhas, no peso dos cordeiros ao nascer. Os métodos de pastoreio rotativo e contínuo foram comparados com uma alta ou moderada oferta de forragem. O experimento foi conduzido de junho a setembro, em uma ár...
Data
The experiment was carried out in an 8.4 ha natural grassland area, subdivided into 12 experimental units, each one of 0.7 ha for 196 consecutive days, divided into seven 28-day periods. During the first 84 days (winter, periods 1-3), pregnant ewes were submitted to two grazing methods (continuous and rotational stocking; CS and RS) and two herbage...
Conference Paper
Full-text available
O objetivo foi determinar a influência dos métodos de pastoreio com uma relativa baixa e alta oferta de forragem nos primeiros 84 dias de gestação no desempenho de ovelhas e seus cordeiros após o nascimento. O trabalho foi conduzido em 8,4 ha de campo natural, quando os animais foram submetidos a diferentes métodos de pastoreio (lotação contínua (L...
Conference Paper
Full-text available
O objetivo foi determinar a influência dos métodos de pastoreio com uma relativa baixa e alta oferta de forragem nos primeiros 84 dias de gestação no desempenho de ovelhas e seus cordeiros após o nascimento. O trabalho foi conduzido em 8,4 ha de campo natural, quando os animais foram submetidos a diferentes métodos de pastoreio (lotação contínua (L...
Conference Paper
Full-text available
O objetivo foi determinar a influência dos métodos de pastoreio com uma relativa baixa e alta oferta de forragem nos primeiros 84 dias de gestação no desempenho de ovelhas e seus cordeiros após o nascimento. O trabalho foi conduzido em 8,4 ha de campo natural, quando os animais foram submetidos a diferentes métodos de pastoreio (lotação contínua (L...
Conference Paper
Full-text available
O ensaio foi conduzido em 8,4ha de campo nativo, dividido em 12 unidades experimentais com 0,7ha, testando dois métodos de pastoreio (lotação contínua e rotativa; LC e LR) e duas ofertas de forragem (12 e 18 kg MS/100 kg PV; 12 e 18%) com ovelhas em gestação, gerando quatro tratamentos: LC12, LC18, LR12 e LR18. Foram medidos os deslocamentos durant...
Conference Paper
Full-text available
Este ensaio foi conduzido com o objetivo de testar o efeito de níveis de oferta de azevém anual (Lolium multiflorum Lam.) para ovinos, avaliando o desempenho. Os tratamentos aplicados foram três intensidades de pastejo (alta, moderada e baixa), definidas por oferta de forragem que representassem 1,25, 2,5 ou 5,0 vezes o potencial de consumo, em mét...
Data
a b s t r a c t Lack of information in the efficiency of nutrient use is one of the reasons why concentrate supplementation is little used in southern Brazil. The aim of the present study was to test the efficiency of use increasing levels of concentrate feed to supply (0, 33, 66 and 99%) of metabolizable energy (ME) requirements and rumen degradab...
Article
Full-text available
The objective of this study was to evaluate the influence of creep feeding and creep grazing on the pasture characteristics and on performance and productivity of sheep. Three systems of lambs production on Tifton 85 (Cynodon spp.) pastures oversown with Italian ryegrass (Lolium multiflorum Lam) were studied: lambs with dams until slaughter without...
Article
Full-text available
The objective of this study to assess the relationship between ewe maternal behavior score and physiological parameters related to their temperament. During lambing, 258 Corriedale and 50 Polwarth ewes were evaluated. They were raised on native pasture in the southwest region of Rio Grande do Sul State, Brazil. The effects of farm, age, type of lam...
Article
Full-text available
It was evaluated grazing times of heifers in natural pasture, obtained by visual assessment in 5-minute intervals. By using the original data, it was calculated observation intervals of 10, 15 and 20 minutes. It was used four crossbreed Angus × Nellore heifers, with average weight of 249 ± 6 kg BW. The completely randomized block design was used wi...
Article
Full-text available
This work aimed to study the temperament and the behavior of three sheep breeds (Suffolk, Texel, Ile de France) submitted to two grazing methods (continuous and rotational) with two forage supplies (10 and 20 kg of Italian ryegrass DM/100 kg body weight/day) during four evaluations from August to November 2006. A random block design was used with s...
Article
Full-text available
Objetivou-se avaliar a composição tecidual do lombo e do pernil e o perfil de ácidos graxos da carne de cordeiros em quatro sistemas de terminação: 1) cordeiros desmamados com média de 40 dias e mantidos em pasto de azevém até o abate; 2) cordeiros com suas mães na mesma pastagem até o abate; 3) idem ao 2), porém com suplementação diária a 1% do PV...
Article
Full-text available
The objective of this study was to evaluate tissue composition of loin and leg and fatty acids profile of the meat of lambs in four finishing systems: (1) lambs weaned around 40 days of age and kept in ryegrass pastures until slaughter; (2) lambs kept with their dams in the same pasture until slaughter; (3) same treatment of (2), but daily suppleme...
Article
Full-text available
A composição tecidual da carne é característica importante na avaliação da qualidade sensorial e nutricional do produto. O presente trabalho avaliou a composição tecidual e o perfil de ácidos graxos do lombo de cordeiros desmamados aos 42 dias de idade média e terminados em pasto de azevém com níveis diários de suplementação concentrada (0, 1 e 2%...
Article
Full-text available
The objectives of this study were to analyze the economic viability of meat lamb production systems and identify the components with greatest influence on production cost. The study was carried out in two stages. Stage 1: comparison of finishing lamb production systems: (1) lambs weaned at 60 days and finished on pasture; (2) lambs with mother on p...
Article
Full-text available
Meat composition is an important aspect on evaluation of sensory and nutritional quality of the product. This work had the objective of evaluating tissue composition and fatty acids profile of loin lambs weaned at 42 days of mean age and finished on ryegrass pasture with levels (0%; 1% and 2% of BW; ad libitum) of daily concentrate supplementation....