Luciano Fernandes Sousa

• Doutor
• Coordenador do Programa de Pós-Graduação em Ciência Animal Tropical (PPGCat) at Universidade Federal do Norte do Tocantins

Objetivou-se avaliar os efeitos da adição de levedura ativa sobre o consumo, digestibilidade aparente, o balaço de nitrogênio e de energia de borregas alimentadas com dietas contendo alto teor de concentrado. Foram utilizadas 5 borregas mestiças Dorper x Santa Inês com peso médio inicial de 54,1 ± 1,4 kg e 8 meses de idade, alojadas em gaiolas indi...

Silvopastoral systems can be implemented in idle secondary forests; however, they may affect nutrient cycling in these ecosystems. This farming practice using babassu palms (Attalea speciosa Mart.) and Mombasa grass (Panicum maximum Jacq.) has been little studied, and the nutrient cycling occurred during this practice is yet unknown. The goal of th...

Objetivou-se avaliar os efeitos da adição de níveis crescentes da combinação de levedura ativa e inativa sobre o consumo e digestibilidade aparente da matéria seca (MS) e seus componentes, e balanços de nitrogênio e de energia de borregas alimentadas com dietas de alto concentrado. Foram utilizadas 5 borregas mestiças Dorper x Santa Inês com peso i...

The objective of this study was to assess the effects of high-concentrate diets with and without the inclusion of soybean hull (SH; 0 or 500.8 g/kg) plus corn (whole or ground) on the performance, morphometric traits, and nutritional and metabolic parameters of crossbred dairy calves. We also aimed to assess the costs associated with the experiment...

The aim of this study was to explore the effect of replacing protein pellets with soybean grain in high-concentrate diets with or without the addition of silage, on the intake, digestibility, and rumen and blood parameters of feedlot cattle in tropical regions. Four cannulated, crossbred steers were used, 4.5 ± 0.5 years old, with an average weight...

The objective of this study was to evaluate the effect of the transport distance and lairage time on behavioral indicators of zebu beef cattle in the resting pen of a slaughterhouse using the focal animal technique. Eight lots of male zebu cattle, Nelore, aged approximately 4 years old, weighing on average 500 ± 28.5 kg-1, from different municipali...

Simple Summary Numerous palm oil byproducts are already employed as livestock energetic feed supplements, and the inclusion of palm oil deodorizer distillate (POD) presents a potential addition to cost-effective feed alternatives. However, the presence of high-fatty-acid diets could alter the ruminal environment, potentially influencing the digesti...

Fat sources represent an important component in ruminant feed, as they provide 2.25 times more energy than carbohydrates, and new sources, such as inert fats from rumen degradation, are a good option due to their fatty acid profile. The objective was to evaluate the performance and ingestive behavior of goats fed increasing levels of inert palm fat...

Highlights Increased levels of amylolytic enzymes in the diet did not change ewe's comsumption. Changes in nutrients digestibility were observed. Inclusion of exogenous amylolytic enzyme can improve dry matter digestibility. Abstract The aim was to evaluate if the inclusion of exogenous amylolytic enzyme affect the nutrient intake and digestibility...

The aim was to evaluate if the inclusion of exogenous amylolytic enzyme affect the nutrient intake and digestibility in ewes fed high-concentrate diets containing flint corn. Five Santa Inês × Dorper crossbred ewes (54.04 ± 4.5 kg and aged 8 months) were used in a 5 x 5 Latin square design. All animals were housed in individual metabolic cages for...

This study evaluated the inclusion of cupuassu cake (Theobroma grandiflorum Schum.) in the diet of feedlot sheep. Intake (kg day-1, % LW and kg LW-0, 75), weight gain, feed conversion, carcass characteristics and measurements, ingestive behavior, and meat quality were assessed. Twenty-five mixed breed castrated sheep, with initial mean live weight...

This study mapped cattle carcass lesions and associated the isoline maps with the occurrence factors of these lesions. Isoline maps were drawn by common kriging. The associated occurrence factors were the layout of the boards in the crowding tub (CT), characteristics of the hauling truck (general state and the presence of loose and/or sharp boards)...

To gain insights into the forage morphological and anatomical characteristics in a silvopastoral system (SPS) with Bolsa de Pastor (Zeyheria tuberculosa) and palisadegrass ‘Marandu’ (Urochloa brizantha) monoculture (MONO). The SPS was established through natural regeneration of the tree species. Treatments were a SPS and MONO distributed in a compl...

Em razão dos grandes custos com alimentação na produção animal, tem-se buscado associar novas tecnologias à novos produtos designados para a fisiologia animal, a fim de obter resultados mais satisfatórios e aprimorar a produção. A finalidade do experimento, foi determinar diferentes níveis de inclusão do concentrado proteico mineral associa- dos co...

O uso de enzimas exógenas é uma biotecnologia utilizada para otimizar a produção de ruminantes, através da melhora da digestibilidade e degradabilidade ruminal da fibra, do amido e da proteína presentes nos mais diversos alimentos. Objetivou-se avaliar o efeito de enzimas exógenas fornecidas como aditivo em ração para caprinos sobre o consumo e met...

Simple Summary The destination of agro-industrial residues and deforestation to form new pasture areas are urgent concerns in the Amazon region. Diverse studies have evaluated the inclusion of these residues in ruminant diets and have enabled the intensification of animal production systems. Palm kernel cake (PKC), for example, is generated after o...

The objective was to estimate the different levels of inclusion of an energetic supplement in the concentrate in relation to consumption and blood biochemistry. The experiment was carried out with lambs with about eight months of age and an average weight of 40Kg. They were distributed in 5x5 Latin square digestibility study cages with five differe...

The use of palm kernel cake as an alternative to conventional ingredients, due to the presence of residual fat, can also reduce methane emissions. The objective of the study was to evaluate, in two different experiments, the effects of palm kernel cake supplementation on feed intake, enteric methane production and estimates, and the ingestive behav...

Objetivou-se avaliar o efeito de diferentes inclusões de enzimas exógenas: controle (sem enzimas), enzimas fibrolí- ticas, enzimas proteolíticas, enzimas amilolíticas e mix de enzimas em concentrados a base de milho desintegrado com palha e sabugo (MDPS) na ração de cordeiros sobre parâmetros nutricionais e metabólicos. O experimento foi realizado...

Objetivou-se avaliar dietas contendo diferentes níveis de inclusão de gordura inerte de palma como suplemento ali- mentar sobre o consumo de nutrientes e parâmetros bioquímicos de cabritos em desenvolvimento. Foram utilizados 16 cabritos (Anglo Nubiano x Saanen) com médias de 60 dias de vida e 18,66 kg de peso vivo. Dieta composta por silagem de so...

Objetivou-se avaliar o efeito da utilização de níveis de concentrado extrusado sobre os parâmetros nutricionais, metabólicos e comportamento ingestivo em cordeiros mestiços Dorper x Santa Inês. Vinte cordeiros com aproxima- damente cinco meses de idade foram distribuídos aleatoriamente em gaiolas metabólicas e receberam dietas com duas relações vol...

Objetivou-se estimar os intervalos de referência dos parâmetros bioquímicos de ovelhas lactantes nos trópicos. Foram compiladas informações de até 290 ovelhas lactantes no período de 2006 a 2017. Todos os animais eram saudáveis e não passaram por condições de desnutrição forçada. Os animais foram criados em diferentes sistemas de manejo (pasto, con...

Genealogical data comprised 45,711 animals born between 1901 and 2016, with 48,127 animals in the pedigree file. Population structure was analyzed in terms of pedigree completeness, individual inbreeding coefficient (F), generation interval (L), rate of inbreeding (ΔF), effective population size (Ne), effective number of founders (ff), and effectiv...

The search for technologies to increase productivity of the herds, without increasing production costs, brings a positive highlight to extruded feeds, since these products act to maximize digestive efficiency. The objective was to evaluate the effect of using different levels of inclusion of extruded roughage to replace corn silage on nutritional a...

This study aimed to evaluate the dry matter digestibility, intake and metabolic profile of ewe lambs fed active or inactive yeasts in the diet containing fibrolytic enzyme. Twenty crossbred animals with an average weight of 33.4kg and an average age of six months were distributed in a completely randomized design. The treatments consisted of yeasts...

This study aimed to evaluate the effects of stress in bovines submitted to emergency slaughter caused by lengthy transportation to slaughterhouses in the state of Tocantins, Brazil. Blood collections were performed individually during exsanguinations. Tissue samples were obtained after evisceration on the slaughter line. The animals were divided in...

The objective of this study was to evaluate the effect of adding exogenous enzymes to the diet on nutrient intake and digestibility, nitrogen balance, ingestive behavior and rumen movement of ewe lambs. Five ewe lambs, Dorper x Santa Inês crossbred, with an average age of 7 ± 1 months, average weight of 36.40 ± 2.36 kg were assigned in a 5x5 Latin...

The objective was to evaluate food digestibility, dry matter intake, ingestive behavior and metabolic profile of ewes fed with extruded roughage instead silage. Twenty animals were used, with an average 54.5kg. The treatments consisted: 80%F:20%S; 60%F:40%S; 40%F:60%S; 20%F:80%S; and 100%S. Food, leavings, feces, urine, ingestive behavior and blood...

The objective was to evaluate the effect of enzymes on consumption, digestion of dry matter and blood nutrients and metabolites. Sixteen lambs with an average age and weight of 3 months and 19.00 kg, respectively, were used. Treatments consist of the use of amylolytic, proteolytic and fibrolytic enzymes. A completely randomized design was used. No...

Objective The objective of this study was to evaluate the effects of monensin and concentrate supplementation levels on bermudagrass (Cynodon dactylon) in situ disappearance and ruminal measurements. Materials and Methods The experiment was conducted in Ona, Florida, and treatments were the factorial arrangement of 2 supplementation levels [0.4 (l...

The objective was to evaluate the performance and ingestive behavior of grazing sheep in the finishing stage, with supplementation in the period of water restriction. Fifteen male crossbred sheep were used in continuous pasture in Massai grass and supplied supplement formulated with 18% of crude protein in three levels (0.0; 0.3 and 0.6% of body we...

Metabolite levels can vary according to the farming region, age, physiological state and feeding of the animal, therefore, the objective was to estimate reference values for the energy, hepatic and mineral profiles of sheep (above 12 months) in the tropics. For this, data from healthy adult sheep, raised in different management systems in Brazilian...

The objective was to evaluate effects of extruded soybean hulls as replacement for corn silage. Twenty animals with an average weight of 57.00kg were used. The treatments consisted different levels inclusion the extruded roughage to replace the silage. A completely randomized design was used. There was negative linear response for dry matter intake...

The purpose was to evaluate the effect of extruded roughage Foragge ® with different additives on intake, digestibility nutrients and nitrogen balance of sheep. Twenty adults, non-pregnant ewes with average weight 68 kg were used. The treatments were extruded roughage with additives (essential oil, virginiamycin, unpurified inactive yeast, tannin a...

The objective was to evaluate the effect of replacing common urea with protected urea in the supplement on the nutrient intake and digestibility and metabolic profile of sheep. Five adult sheep, with an average age of 4 years and an initial average body weight of 50 ± 4.03 kg, were used. The diet consisted of sorghum silage, supplemented with a mul...

‘Mavuno’ is a newly released brachiariagrass (Urochloa hybrid) cultivar with limited information available in the literature. The objective of this study was to compare forage characteristics of this cultivar and ‘Marandu’ palisadegrass [Urochloa brizantha (Hochst. ex A. Rich.) R.D. Webster cv. Marandu] harvested at 2 different stubble heights duri...

The aim was to evaluate the effects of different concentrate: roughage relationships, using extruded concentrate and corn silage, on the intake, digestibility, ingestive behavior, and metabolism of sheep. Twenty Santa Inês ewes with a weight of 50 kg and an average age of three years were used, assigned in a completely randomized design. The evalua...

Context Grain-based diets result in lower starch utilisation compared with traditional diets with corn silage. The best use of yellow dent corn starch, in addition to increasing animal performance, can be obtained by the inclusion of an effective fibre source in grain-based diets and/or the use of more efficient genetic groups in a tropical feedlot...

The study aimed to determine the biochemical reference ranges for lambs from birth to 1 year of age in the tropics. Data were obtained from experiments performed in several institutions and commercial farms using Santa Inês, Dorper, Lacaune, Morada Nova, Bergamacia and Suffolk lambs reared under different conditions (grazing, feedlot, semi-feedlot)...

The objective of this study was to evaluate the effect of phosphate fertilization on morphogenic and structural characteristics of Mombasa grass under conditions of implantation of silvopastoral system with eucalyptus and monoculture in the Amazon/Cerrado ecotone. The experiment was conducted at UFT-EMVZ during the rainy seasons of the 2016/2017 an...

This study evaluated the performance and meat quality of broiler chickens reared on two litter materials and at two stocking densities. • The chicks were allotted in a completely randomised design in a 2x2 factorial arrangement with two litter materials (wood shavings or rice straw) and two stocking densities (24 or 30 kg/m²), with six replicates...

The objective of this study was to evaluate performance, apparent digestibility, blood parameters, and quantitative characteristics of carcass and internal organs of crossbred dairy calves fed different levels of crude glycerin in corn grain-based diets. Twenty-four calves of three months of age and average initial weight of 95.5±11.8 kg were used....

Objetivou-se avaliar o efeito da suplementação com dois níveis de concentrado na dieta de ovelhas no terço final da gestação sobre como afetam o consumo de matéria seca e metabólitos sanguíneos. Os experimentos foram realizados em 41 ovelhas com peso médio de 64,2 kg. Os animais foram alojados em baias onde os tratamentos consistiam em dois níveis...

Objetivou-se avaliar a digestibilidade da matéria seca, consumo e perfil metabólico de borregas alimentadas com leveduras vivas e inativadas na ração. Foram utilizados vinte animais mestiços com peso médio de 37,3kg. Os alimentos foram fornecidos duas vezes ao dia e pesados e amostrados diariamente, também foram amostradas as sobras e as fezes na m...

This study aimed both to evaluate the metabolic profile of lambsfed with extruded forage and concentrate containing different roughageconcentrate ratios (R:C) and to evaluate in-vitro ruminal fermentationkinetics of these rations. An experiment was carried out with 20 weanling,female crossbred lambs (½Dorper x ½Santa Inês) aged 120 ± 8 days. Thetre...

Objetivou-se avaliar o efeito da utilização de ração extrusada com diferentes relações volumoso:concentrado (V:C) sob o consumo, comportamento ingestivo e parâmetros sanguíneos em ovinos. Foram utilizados cinco machos ½ Dorper e ½ Santa Inês, não castrados, com peso corporal médio de 34,5±4,10 kg e idade média de sete meses. O delineamento experime...

Avaliou-se a utilização do volumoso extrusado contendo diferentes aditivos sobre parâmetros nutricionais e fisiológicos de ovinos. Foram utilizadas 20 ovelhas não gestantes, adultas, com peso médio de 68 kg. Os animais receberam cinco tratamentos contendo volumoso extrusado com diferentes aditivos (óleos essenciais, virginiamicina, tanino, levedura...

Animal performance is directly related to the food quality and intake.Analyzing feeding behavior is an important tool to evaluate diet efficiency.This study aims to evaluate the intake of dry matter, feeding behavior andruminal movement amongst lambs fed with extruded feed in differentroughage (R) : concentrate (C) ratios. An experiment was carried...

The purpose of the current study was to evaluate the in vitro fermentation (IVRF) and apparent in vivo digestibility (AIVD) of diets formulated with four inclusion levels of babassu mesocarp meal (BMM) (0.0; 7.5; 15.0 and 22.5%) in ewe lambs. The IVRF test was performed through the "Hohenheim Gas Test" technique, following a randomized complete blo...

Voluntary consumption (VolC) and ingestive behaviour (IB) of lambs fed diets containing different percentages (0.0; 7.5; 15.0 and 22.5%) of babassu mesocarp bran (I-BMB) were evaluated. The trial was at the Federal University of Tocantins, Campus de Araguaína-TO. Twenty lambs were evaluated using a completely randomized design, and five replication...

The aim of the present study was to evaluate the agronomic traits in the pre- and post-grazing and the nitrogen use efficiency of Piatã grass that was subjected to nitrogen fertilization throughout the seasons of the year. The experiment was performed in a randomized block design with four treatments (0, 150, 300, and 450 kg ha⁻¹ N). Grazing was pe...

Objetivou-se avaliar o efeito da inclusão de fontes lipídicas com diferentes sítios de degradação sobre o perfil metabólico de ovelhas gestantes. O experimento foi realizado na Universidade Federal de Uberlândia, na Fazenda Experimental Capim Branco, durante os meses de agosto a novembro de 2015, tendo 90 dias de duração. Foram utilizadas 24 ovelha...

Objetivou-se avaliar o consumo de matéria seca e parâmetros metabólicos de 30 borregas alimentadas com ração extrusada em diferentes relações volumoso (V): concentrado (C). O experimento foi realizado na Universidade Federal de Uberlândia, de 07 de dezembro de 2016 a 22 de março de 2017. Os tratamentos consistiam de ração extrusada nas relações 30V...

The aim of the present study was to evaluate the agronomic traits in the pre-and post-grazing and the nitrogen use efficiency of Piatã grass that was subjected to nitrogen fertilization throughout the seasons of the year. The experiment was performed in a randomized block design with four treatments (0, 150, 300, and 450 kg ha −1 N). Grazing was pe...

The objective of this study was to evaluate the effects of monensin and supplementation level on bermudagrass (Cynodon dactylon) in situ disappearance and ruminal parameters. The experiment was conducted in Ona, FL. Treatments were the factorial arrangement of 2 supplementation levels [0.4 (low) or 4 kg/d (high)] and 2 monensin levels (20 mg/kg of...

The objective of the study was to evaluate the main pre-slaughter factors contributing to bruising on cattle carcasses in the micro-region of Araguaína, Tocantins. The experiment was conducted from January to June using data from 414 cattle heads of different breeds, body weight and sex. Factors related to bruises in cattle were evaluated from the...

This study aimed to evaluate the growth, production, and leaf contents of macronutrients, as well as the yield of forage sorghum cultivated on the alleys of Gliricidia (Gliricidia sepium (Jacq.) Kunth ex Walp.) and Leucaena (Leucaena leucocephala (Lam.) de Wit) in the presence and absence of mineral fertilization. The experiment was conducted in tw...

This paper aimed to evaluate the metabolizability, performance and economic viability of purified glycerin inclusion in balanced diets fed to chicken broilers from 8 to 21 days old. Two experiments were conducted. In the first experiment, 100 broilers (14 days old) were distributed in a completely randomized design into two treatments, with five re...

The objective of our study was to compare the intake and digestibility of dry matter and nutrients, and the nitrogen balance, of lambs fed extruded ration with different roughage (R) to concentrate (C) ratios. The experiment was carried out at the Federal University of Uberlândia (UFU), Experimental Farm Capim Branco, from 7 December 2016 to 6 Janu...

This studyaimed to assess the influence of three pre-grazing heights of Massai grass on the ingestive behavior of sheep under rotational stocking. Eighteen Dorper x nondescript crossbred sheep were used under rotational stocking on Massai grass at pre-grazing heights. The animal stocking was estimated to ensure a reduction of approximately 50% of t...

This study aimed to evaluate the morphogenic, structural, chemical characteristics, and forage yield of Massai grass, as well as the performance of sheep under three pre-grazing canopy heights. Eighteen Dorper x crossbred sheep (12 males and 6 females) were subjected to three pre-grazing canopy heights of Massai grass (45, 35, and 25 cm). Rotationa...

The study evaluated the effect of transportation over long distances on cattle muscle tissue of submitted to emergency slaughter in slaughterhouses in northern Tocantins, Brazil. The evaluations consisted in pH, muscle and liver glycogen, muscle histopathology and creatine kinase (CK), alanine aminotransferase (ALT) and aspartate aminotransferase (...

A ausência da categoria asinina nas normas técnicas de avaliação seminal promove a necessidade de informações reprodutivas desta espécie. Objetivou-se descrever o perfil proteômico do plasma seminal de jumentos da raça Pêga (Equus asinus). Utilizaram-se seis animais púberes, com peso 239±32,6 Kg e circunferência escrotal de 36,8±6,9 cm, criados em...

Aqui nós avaliamos a viabilidade da inclusão de glicerina purificada em dietas balanceadas para frangos de corte de 8 a 42 dias de idade. Para tanto, foram utilizados 160 fios de 8 dias de idade da linhagem Cobb 500®, distribuídos em delineamento inteiramente casualizado (CRD) com quatro tratamentos (0, 2, 4 e 6% de inclusão de glicerina purificada...

The aim of this study was to evaluate poultry performance and diet metabolisability in slow-growing naked neck chickens fed different substitution levels of soybean meal protein with cottonseed cake protein. The trial was conducted in a completely randomized design with five treatments (0, 10, 20, 30 and 40% substitution of soybean meal protein wit...

We evaluated the technical feasibility of purified glycerin inclusion in balanced diets of broiler chickens treated from 1 to 42 days of age. A total of 240 broiler chickens were distributed in a completely randomized design into four treatments (0, 2, 4, and 6% purified glycerin inclusion), with six replicates of 10 broilers each. We evaluated pro...

The study evaluated the effect of transportation over long distances on cattle muscle tissue of submitted to emergency slaughter in slaughterhouses in northern Tocantins, Brazil. The evaluations consisted in pH, muscle and liver glycogen, muscle histopathology and creatine kinase (CK), alanine aminotransferase (ALT) and aspartate aminotransferase (...

Pintoi peanut (Arachis pintoi Krapovickas & Gregory) is a warm-season perennial legume that has been used in grass–legume mixtures; however, management practices to successfully establish pintoi into warm-season grass swards have not been fully examined. Two experiments were conducted to evaluate different sward compositions and methods of establis...

The objective of this study was to evaluate the use of extrused roughage on nutritional and metabolic parameters in sheep. Eighteen 3-year-old sheep in metabolic cages were randomly assigned to two treatments: corn silage and extruded roughage. Dry matter intake (DMI) and water intake were calculated as the difference between offered feed and orts...

O objetivo deste estudo foi avaliar a produção, consumo e digestibilidade de diferentes híbridos de milho utilizados para produção de silagem. Foram utilizados 5 borregos cruzados Dorper x Santa Inês, machos inteiros, com idade média de 8 meses e peso médio de 37 kg alimentados com silagem de quatro diferentes híbridos de milho (SHS 7920 PRO, BM 30...

The performance and breast skin color of slow-growing broilers from 30 to 90 days old fed diets with different inclusions of cassava bagasse and annatto colorific were evaluated. 308 slow-growing broilers were used in a completely randomized experimental design, in a factorial scheme with an additional treatment 3 X 2 + 1, with three levels of anna...

The aim of this study was to investigate the effects of including purified glycerin in the diets of broilers from 22 to 42 days of age. Eighty Cobb 500® lineage broilers were distributed in a completely randomized design (CRD) to one of four treatment groups (0, 2, 4 and 6% of purified glycerin inclusion in feed) and five replicates of four birds....

Avaliou-se a influência das diferentes proporções e tamanhos de partículas (dois e dez mm) de feno sobre o peso corporal (PC), consumo de matéria seca (CMS), parâmetros fisiológicos e comportamento ingestivo de ovelhas. O experimento foi realizado em Uberlândia utilizando cinco ovelhas canuladas no rúmen, alojadas em gaiolas metabólicas com piso ri...

The inclusion effect of 0 (control), 15, 30, 45, 60, and 100% dry matter (DM) of Brazil nut (Bertholletia excelsa Bonpl.) cake (BNC) aiming at replacing corn silage was assessed on fermentation kinetics and effective degradability (ED) by means of in vitro gas production at 3, 6, 9, 12, 24, 48, 72 and 96 h. A randomized block design was used with s...

The effects of phosphate and nitrogen fertilization on aspects of forage composition and ruminal fermentation were separately evaluated pre- and post-grazing, in addition to the dry matter intake and weight gain of sheep grazing Panicum maximum cv. Massai under a rotational system on Quartzipsamment soil. The aim was to evaluate the effect of ferti...

Jatropha curcas cake, a by-product of biodiesel production, is rich in protein and has potential to be used in livestock feed; however, the presence of antinutritional factors and phorbol esters limits its use. Thus, this study investigated toxicological and reproductive effects in male Wistar rats after subchronic exposure toJ. curcascake subjecte...

The aim of this study was to assess the effect of propylene glycol (PG) added to the water sheep drank during lactation on protein and mineral metabolites of their suckling lambs. We assessed 24 lambs born to sheep fed levels of propylene glycol in the water (0; 1.5; 3.0 and 4.5%). The sheep were subdivided according to a completely randomized desi...

The aim of this study was to investigate the effect of nitrogen (N) concentration during the establishment period of Mombasa grass (Panicum maximum Jacq.). The experiment was conducted using four different N concentrations (0, 30, 60 and 90 kg N/ha) during the establishment period in order to evaluate the effect of nitrogen on the plant. These effe...

The aim of this study was to investigate the effect of nitrogen (N) concentration during the establishment period of Mombasa grass (Panicum maximum Jacq.). The experiment was conducted using four different N concentrations (0, 30, 60 and 90 kg N/ha) during the establishment period in order to evaluate the effect of nitrogen on the plant. These effe...

Objetivou-se com o presente estudo determinar a influência da arbórea bolsa-de-pastor (Zeyheria tuberculosa Vell. Bur.) em um sistema silvipastoril (SSP) quanto à cinética de degradação ruminal dos componentes bromatológicos (MS, MO, PB) da gramínea Urochloa brizantha cv. Marandu, localizado no bioma Cerrado, no município de Lagoa Santa, Minas Gera...

The objective of the study was to assess the effects of including 0, 79.8, 159.8, and 240.0 g kg⁻¹ crude glycerin in the total diet dry matter on the 84 days feedlot performance, nutrient digestibility, blood parameters, and carcass characteristics of crossbred dairy steers. Experimental diets were composed of 98.5 g kg⁻¹ of sorghum silage and 901....

In order to evaluate the feeding behavior of sheep fed with diets containing different levels of palm kernel meal (PKM) substituted for corn silage, a metabolic assay was performed on 20 ewes (5 treatments × 4 replicates) over 25 d. The animals received corn silage diets with the addition of increasing levels of PKM (0, 15, 30, 45, and 60%). The fo...

This study evaluated the ingestive behavior of sheep when fed a corn-silage-based diet with varying levels (0%, 15%, 30%, and 60%) of Brazil nut cake (NC) (Bertholletia excelsa Bonpl.). Sixteen mongrel sheep with an average weight of 33 ± 6.04 kg were randomly distributed between four treatments. Data were tested for assumptions of normality, subje...

RESUMO Objetivou-se neste trabalho avaliar o efeito da gravidade específica de ovos de matrizes pesadas com diferentes idades no rendimento de incubação e no peso dos pintos pós-eclosão. Foram utilizados 3.072 ovos oriundos de dois lotes de matrizes pesadas, linhagem Cobb – 500 ®. Os ovos foram distribuídos em delineamento experimental inteiramente...

The objective of this work was to evaluate the effect of specific gravity of eggs from broiler breeders of different ages in the yield of incubation and the weight of post-hatch chicks. Were used 3.072 eggs from two batches of broiler breeders, Cobb - 500®. The eggs were distributed a completely randomized design in a 2x4 factorial design with two...

This work was conducted with the objective of monitoring a population dynamics of honeybeecolonies during the rainy season in the region of Araguaína and how this water regime interferes in the maintenance of the colony and social organization of these insects. Were evaluated four Langstroth hives, colonized with colonies of honeybees, during the p...

Objetivou-se com este trabalho avaliar a viabilidade técnica e econômica da substituição do farelo de soja pela torta de babaçu em rações balanceadas para frangos de corte, de um a 21 dias de idade. Foram utilizados 200 pintos de um dia, distribuídos em delineamento experimental inteiramente casualizado (DIC), com quatro tratamentos (0, 10, 20 e 30...

Crop-livestock integration is an alternative method of rehabilitating degraded pastures. The goal of the present study was to evaluate the initial responses of morphostructural characteristics of two different Urochloa brizantha cultivars grown in monocropping or intercropping systems over two agricultural years. U. brizantha cultivars Marandu and...