
Paulo Cesar Pozza- PhD
- Professor (Associate) at Universidade Estadual de Maringá, Maringá City, Brazil
Paulo Cesar Pozza
- PhD
- Professor (Associate) at Universidade Estadual de Maringá, Maringá City, Brazil
About
203
Publications
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Introduction
Current institution
Universidade Estadual de Maringá, Maringá City, Brazil
Current position
- Professor (Associate)
Additional affiliations
February 2000 - March 2011
March 2011 - present
Publications
Publications (203)
This study aimed to estimate the nutritional requirement of standardized ileal digestible (SID) tryptophan for Japanese quails during the initial laying phase and to assess its effects on egg quality, organ weights, leukocyte differential count, and heterophile: lymphocyte ratio. The experimental design was completely randomized, with 5 treatments...
Resumo Este trabalho objetivou estimar a exigência nutricional de triptofano digestível para codornas japonesas na fase inicial de postura, além de verificar seus efeitos sobre a qualidade dos ovos, o peso dos órgãos, a contagem diferencial leucocitária e a relação heterófilo:linfócito. O delineamento experimental adotado foi o inteiramente casuali...
As aves e os suínos são animais considerados homeotérmicos, porém estes animais apresentam a necessidade de serem criados em ambientes com temperatura a umidade controlados. Pois a exposição ao estresse térmico durante seu desenvolvimento pode resultar na diminuição do consumo causando distúrbios metabólicos, como a alcalose respiratória, que provo...
Objective:
This study aims to investigate the interactive effect of a glycine equivalent (Glyequi) and standardized ileal digestible threonine (SID Thr) levels in low crude protein diets on performance, blood biochemistry, pectoral muscular creatine content and oxidative stability of meat in broiler chickens from 21 to 42 days.
Methods:
A total...
This work evaluated the influence of vitamin A on performance, organ weight, and bone and skin characteristics in broilers (Cobb 500) at 21 and 42 days of age. A total of 1920 chickens were distributed in a randomised design, considering six vitamin A supplementation levels (0, 6000, 16,000, 26,000, 36,000, and 46,000 IU kg ⁻¹ ), with 16 replicates...
The objective of this study was to evaluate the effect of standardized ileal digestible (SID) tryptophan (Trp) and lysine (Lys) levels on eating and sleeping behavior and the respective feed intake of barrows. Sixty-four pigs, averaging 15.00 ± 1.63 kg of initial body weight, were used and distributed in a randomized blocks design, in a 4 × 4 facto...
The objective of this study was to evaluate the performance, digestibility, and environmental impact of pigs in the growth phase receiving diets with reduced crude protein and supplementation of amino acids. In the metabolism experiment, 20 crossbred barrows with an initial average weight of 63.62 ± 2.21 kg were housed in metabolic cages, with four...
Linoleic (LA, 18:2) and alpha-linolenic (ALA, 18:3) acids are omega-6 and omega-3 polyunsaturated fatty acids considered essential to human and animal health. The optimum LA/ALA ratio for the production of fertile eggs in Japanese quail breeders has been little investigated. Thus, this study aimed to assess the effects of LA/ALA ratio on productive...
This study aimed to evaluate the interaction between creatine monohydrate (CMH) and standardized ileal digestible (SID) methionine + cysteine (Met+Cys) in finishing pig diets on the performance, carcass traits, pork quality, blood biochemistry, gene expression of creatine transporter and muscle antioxidant action. Forty gilts, averaging 75.26±0.87...
The objectives of this study were to evaluate the antimicrobial capacity of the photosensitizer (PS) safranin-O (Sf), through antimicrobial photodynamic therapy (PDTa), against strains of Pseudomonas fluorescens (PV1, PVh, and PC3) and Staphylococcus aureus (SV1, SV3, SV5, SC5, SC6, and SC8) isolated from milk from cows and goats and the biofilm fo...
An experiment was carried out with Japanese quails in the initial laying phase, from 43 to 168 days of age, to determine the nutritional requirement of digestible methionine + cystine for this period. 375 quails were used, being fifteen quails used per experimental unit. A total of 5 treatments (0.60, 0.75, 0.90, 1.05 and 1.20% digestible methionin...
Resumo Foi desenvolvido um experimento com codornas japonesas na fase inicial de postura, de 43 a 168 dias de idade, com o objetivo de determinar a exigência nutricional de metionina + cistina digestível para este período. Foram utilizadas 375 codornas, sendo 15 aves por unidade experimental. O delineamento experimental foi inteiramente casualizado...
The objective of this study was to estimate the nutritional requirement of digestible methionine + cystine for Japanese quail during the growth phase and its residual effect on the laying phase. One experiment was conducted, including three phases: starter, from 1 to 14 days of age; grower, from 15 to 42 days of age; and laying, from 43 to 168 days...
Copaiba oil-resin (COR) extracted from Copaifera reticulata Ducke has been used as a natural chemotherapeutic agent for a wide range of therapeutic applications. This study presents an emulgel design with a high concentration of COR, designed to prevent and treat mastitis. The COR was stabilized in a gel matrix constituted by carbopol C934P and Plu...
The objective of this work was to evaluate the behavior of zeolite against different types of corn in broiler chickens’ diets. 1,200 male broiler chickens were assigned to six diets in a completely randomized design and a 2 × 3 factorial arrangement, consisting of two types of corn (higher or lower mycotoxin contamination) and the inclusion of zeol...
The objective of this study was to evaluate the interaction of guanidinoacetic acid (GAA) with standardised ileal digestible methionine + cysteine (SID Met + Cys) levels in finishing pig diets on the performance, carcase characteristics, pork quality, blood variables, gene expression of creatine transporter (SLC6A8) and oxidant and antioxidant acti...
This study was conducted to evaluate glycine equivalent (Glyequi) requirement in low crude protein (CP) diets with different levels of standardised ileal digestible (SID) threonine (Thr) on performance, serum metabolites, and muscle creatine of broiler chickens from 1 to 21 d age. A total of 1275 one-day-old male Cobb-Vantress chicks were distribut...
This study aimed to assess the effects of dietary supplementation of inosine-5′-monophosphate (5′-IMP) on energy efficiency, growth performance, carcass characteristics, meat quality, oxidative status, and biochemical profile of blood plasma in finishing pigs. Fifty-four crossbred castrated male pigs were distributed in a randomized block design co...
To evaluate the association of fatty acids, prebiotics and zinc proteinate (Viligen NE) in weaned piglet diets without AGP, 80 piglets averaging 6.69±0.19 kg (21-days old) were distributed in randomized blocks design. Eight replicates of one male and one female were used for each of five treatments: positive control (an antibiotic growth promoter;...
Dehydrated citrus pulp (DHCP) is a by-product from the orange industry available for use in diets for pigs in tropical countries; however, the high fiber content may limit its use for piglets, a fact that can be mitigated through the use of exogenous enzymes. The objective of this work was to evaluate the inclusion of DHCP with or without an exogen...
Inosine 5′-monophosphate (5′-IMP) is an essential nucleotide for de novo nucleotide biosynthesis and metabolism of energy, proteins, and antioxidants. Nucleotides are conditionally essential, as they cannot be produced sufficiently rapidly to meet the needs of the body in situations of oxidative stress or rapid muscle growth. A deficient intake of...
Two experiments were conducted to evaluate diet digestibility, performance, digestive parameters, and blood parameters when an enzyme complex (EC) was used in barley- and rye-based diets with different energy levels. In the digestibility assay (exp. I), 108 seventeen-day-old Cobb male broilers were distributed in a completely randomized design in 2...
This study evaluated the level and length of time of vitamin A supplementation and its effects on carcass and cuts yield, meat quality, and myopathies in 42-day-old broilers. A total of 1,920 birds were divided into six groups, and each group received a different level of vitamin A: 0; 6,000; 16,000; 26,000; 36,000 and 46,000 IU/ kg. From day 1 to...
This study aimed to determine the requirements of standardized ileal digestible (SID) methionine (Met) + cysteine (Cys) of 15–30 kg barrows, maintaining or increasing the 1:1 ratio between SID Met and SID Cys. Seventy crossbred barrows averaging 15.2 ± 0.54 kg of live weight were allotted in a randomized block design 2 × 3 + 1 factorial scheme, wit...
This study was conducted to determine the optimum dietary glycine equivalent (Glyequi) level in low-crude-protein diets of 181 g·kg⁻¹ containing varied concentrations of standardized ileal digestible (SID) methionine + cysteine (Met + Cys) for broiler chicks (1–21 d old). A total of 1275, 1-d-old Cobb-Vantress® male broilers were distributed in a 5...
Two experiments were performed to determine the digestibility of diets with crude protein (CP) reduction supplemented with amino acids (18.15; 17.15; 16.15 and 15.15%) to growing pigs (30–50 kg), to assess the use of nutrients and account for the manure excretion, and to evaluate the performance, backfat thickness, Longissimus lumborum depth, and p...
A total of 2622 male broilers were distributed in a 2 ! 5 factorial design, using 2 lipid sources (soybean oil and palm fat), 5 levels of vitamin A supplementation (0, 3,000, 6,000, 12,000, and 24,000 IU kg 21), with 10 replicates, and also 1 control diet (CD) for each lipid source used (7 replicates), each experimental unit being composed of 23 bi...
The present study was carried out to evaluate the effect of net energy levels in diets for barrows, from 70 to 100 kg, on performance, plasma parameters and carcass characteristics. Two experiments were carried out: in the first (Experiment I), a metabolism assay was carried out to estimate the net energy (NE) of experimental diets. Twelve crossbre...
This study evaluated the effect of oral supplementation with tryptophan (Trp) and pyridoxine (Pyr) on the growth performance and social behavior of suckling piglets before and after weaning. At day 14, six suckling piglets per sow were distributed into three treatments and allotted in a randomized block design, with eight replicates and two piglets...
It was aimed to simultaneously study standardized ileal digestible (SID) tryptophan (Trp) and lysine (Lys) for gilts. A digestibility assay was previously conducted to determine the SID amino acid in the basal diet (low levels of SID Trp and Lys). Sixty-four gilts (15.04 ± 1.44 kg) were allotted to 16 diets in a 4 × 4 factorial arrangement (1.55, 1...
Four experiments were conducted to estimate the optimal standardized ileal digestible (SID) level of branched-chain amino acids in low-protein diets during the starter, grower, and finisher periods, using the response surface methodology, and to study their effects on performance and mRNA expression of genes involved in the mechanistic target of ra...
Context
Methionine (Met) is an essential amino acid in pig diets. However, high blood homocysteine concentration, a risk factor for cardiovascular disease, can arise from high dietary Met intake and may indicate an imbalance in the Met cycle. Vitamin B6 acts as a cofactor for enzymes associated with the trans-sulfuration pathway, considered the maj...
RESUMO O experimento foi conduzido com o objetivo de determinar a composição química e energética de cinco farinhas de vísceras, assim como de desenvolver equações de predição dos valores de energia digestível e metabolizável com base na composição química e física dos alimentos. Na determinação dos valores de energia digestível e metabolizável, fo...
The objective of this study was to evaluate the effect of dl-methionine supplementation on the expression of genes related to immune function and intestinal integrity in the jejunum and ileum of 21- or 42-day-old broilers subjected to 38°C for 24 hours. Broilers of 1–21 and 22–42 days of age were divided into two treatments related to methionine su...
Lycopene has the highest antioxidant activity among carotenoids due to its high number of conjugated double bonds; thus, it can be used in pig diets to look for improvements in growth performance and health status, eliminating or preventing the formation of free radicals. Therefore, the aim of the present study was to investigate the effects of die...
Diversos óleos essenciais são estudados por apresentarem atividade antimicrobiana. O objetivo deste trabalho foi avaliar a atividade antimicrobiana de óleo essencial de alecrim em relação à inibição de Escherichia coli (E. coli) em amostras de carne experimentalmente contaminadas. Avaliaram-se os parâmetros físicos e microbiológicos das amostras. F...
The objective of this study was to evaluate the effects of various geometric mean diameters (GMDs) of particles of corn, pelleted soybean meal and a corn-soy mixture in the proportion of 70% and 30%, respectively, on the nutritional value of the feeds. The study evaluated energy consumption, the contents of apparent metabolizable energy (AME) and A...
A utilização de probióticos na dieta de coelhos melhora o consumo e a digestibilidade dos nutrientes, entretanto pesquisas são necessárias para verificar a melhor forma de sua incorporação na ração. O objetivo do presente estudo consistiu em analisar a utilização de crioprotetores e a viabilidade do probiótico kefir com diferentes métodos de incorp...
The objective of this study was to evaluate the effects of dietary creatine and SID methionine+cysteine (Met+Cys) levels on the performance, blood parameters and gene expression of the creatine transporter (SLC6A8) in finishing gilts. Forty gilts, averaging 75.26 ± 0.87 kg of initial weight, were distributed in a randomized blocks design in a 2x2 f...
This study aimed to evaluate, through life cycle assessment and using experimental data, the environmental impacts of growing pigs’ production (30 to 50 kg) fed diets with reduced crude protein (CP) levels, and supplemented with industrial amino acids. Experiment I (nitrogen and phosphorus balance): 20 crossbred barrows, averaging 31.80 ± 2.39 kg o...
The objective of this study was to calculate the environmental impact of raising pigs fed diets with 192, 182, 172, or 162 g kg⁻¹ crude protein (CP) from 15 to 30 kg live weight, using a life cycle assessment (LCA) based on either predicted or observed performance and excretion data. The predicted data were calculated for two animal profiles: one w...
Objective:
The objective of this study was to evaluate the effect of different levels of lycopene supplementation on the carcass traits, meat quality, concentration of lipid oxidation products and antioxidant potential in the meat and liver of finishing barrows and gilts.
Methods:
A total of 40 barrows and 40 gilts were allotted in a completely...
The use of edible film can improve the quality and increase the shelf life of food. The objective of this study was to evaluate the application of films containing acacia gum and different percentages of lactic acid in ricotta cheese. Samples were coated with the film-forming solution (T2 containing 15 mL lactic acid and T3 containing 30 mL lactic...
The use of predicted values of apparent metabolisable energy (AME), obtained from regression equations, can be useful for both research institutions and nutrition industries. However, there is a need to validate independent samples to ensure that the predicted equation for AME is reliable. In this study, data was collected in order to estimate the...
The objective was to evaluate the impact of producing piglets fed diets with different crude protein (CP) levels through life cycle assessment and experimental data. In Trial I (performance), 28 crossbred barrow piglets, with an initial average weight of 15.3 ± 1.15 kg were divided into a randomized block design with four treatments, seven replicat...
Life cycle assessment (LCA) has been widely used in swine production. However, some uncertainties are associated with LCA results, due to the diversity of production systems and agricultural practices, raising questions if the predicted data represents what actually happens in the pig system. The objective of this study was to evaluate the use of p...
The objective of this study was to evaluate dietary lycopene levels for finishing pigs and its effects on malondialdehyde concentrations and antioxidant power on pork. Eighty pigs (40 barrows and 40 gilts), averaging 75.04 ± 1.6 kg of initial weight, were alloted in a 2x5x4 factorial scheme, consisting of two sexes (barrows and gilts), five lycopen...
Life cycle assessment (LCA) has been widely used in swine production. However, some uncertainties are associated with LCA results, due to the diversity of production systems and agricultural practices, raising questions if the predicted data represents what actually happens in the pig system. The objective of this study was to evaluate the use of p...
The study was carried out to evaluate the effects of glycine+serine (Gly+Ser) and threonine (Thr) levels in low crude protein diets on performance, creatine muscle content and meat lipid oxidation (malondialdehyde concentration) of broiler chickens from 21 to 42 days of age. A total of 1,275 21-d-old Cobb male broiler chickens were distributed in a...
Dehydrated citrus pulp (DCP) contains limiting amount of nitrogen (N) and phosphorus (P), probably due to the high content of fiber components and phytic acid. The use of fibrolytic enzymatic complexes could favor the use of DCP in piglets’ diets. Thus, the objective of this work was to determine the balance of P and N in weaned piglets fed diets w...
The chemical composition of corn is variable and the knowledge of its chemical and energetic composition is required for an accurate formulation of the diet. This study aimed to determine the chemical composition, that is, dry matter (DM), mineral matter (MM), neutral detergent fiber (NDF), acid detergent fiber (ADF), ether extract (EE), crude prot...
The objective of this study was to determine the adjustment quality of non-linear models and estimate the growth parameters and body chemical composition of a meat-type quail strain (Coturnix coturnix coturnix) and two laying quail strains (Coturnix coturnix japonica), designated yellow and red. The study used 1500 quail, not sexed, distributed in...
Two experiments were performed to study the interaction between the standardized ileal digestible (SID) leucine (Leu) and valine (Val) levels on the mRNA expression of genes involved in the mechanistic target of rapamycin (mTOR) pathway (experiment I) and determine the requirement of these amino acids in low-protein diets, and their effects on perf...
The objective of this study was to evaluate the standardized ileal digestible (SID) valine and SID leucine levels on performance, backfat thickness, longissimus dorsi depth, and biochemical blood parameters of starting gilts. A total of 72 gilts, with initial weight of 15.16±1.15 kg, were distributed in a randomized block design in a 2 × 4 factoria...
The present study aimed to determine the apparent metabolizable energy (AME) of six corn cultivars, two sorghum cultivars and two wheat brans and to evaluate the cross-validation of predictive models of AME for corn, sorghum and wheat bran for growing pigs, as estimated from the data of chemical composition. Forty-four pigs, with an average initial...
This study was carried out to evaluate the effects of different levels of standardized ileal digestible (SID) methionine + cystine (Met + Cys) and vitamin B6 supplementation on the carcass characteristics and longissimus lumborum (LL) quality in gilts from 75 to 100 kg. Fifty-six gilts were used (Talent x Topigs 20), with an initial average body we...
Muscle protein synthesis in pigs can be considered a key factor in promoting lean gain. However, this is a complex process depending on several enzymes, ribosomal proteins and may be affected by environmental factors, besides nutritional and hormonal. In this sense, sexual hormones may have anabolic action in protein synthesis, leading different ra...
Two experiments were carried out to determine the levels of supplementation of inorganic selenium (Se) and vitamin E (VE) in diets of quails aged 0–14 and 14–35 days old. A completely randomized design was used in a factorial design (Se = 0.1125; 0.2250; 0.3375 and 0.4500 mg kg⁻¹ diet⁻¹ × VE = 10; 23; 36 and 49 IU kg⁻¹ diet⁻¹). In experiment 1, qua...
Corn is one of the primary ingredients in swine diets, but there is a variation in its chemical composition and metabolizable energy (ME) content. Therefore, faster methods are required that can determine more accurate ME values to improve piglet diets. This study determined and predicted the ME of corn from first and second harvests for piglets. T...
Cheese is the oldest form of preserving milk nutrients having nutritional, economic and cultural importance. The objective of this study was to identify the best time of the year for production, and period, in months, for maturation of traditional colonial cheese, through analysis of water activity, weight loss and counts of lactic acid, mesophilic...
This study aimed to evaluate biometric viscera and blood parameters of quails at 14 and 35 days of age, supplemented with different levels of inorganic selenium and vitamin E. A completely randomized design was used in a 4×4 factorial scheme (inorganic Se = 0.1125, 0.2250, 0.3375 and 0.4500 mg/kg diet x VE = 10, 23, 36 and 49 IU/kg feed). In the 0-...
Two experiments were conducted to study the effect of standardized ileal digestible (SID) leucine and valine levels on tibiotarsus bone characteristics and the incidence of tibial dyschondroplasia of broilers from day 1 to 21 (Experiment I) and day 21 to 42 post-hatch (Experiment II). Each experimental phase was evaluated independently. In both exp...
The objective of this study was to evaluate the standardized ileal digestible (SID) leucine levels in low crude protein diets on Performance, backfat thickness, longissimus dorsi depth and biochemical blood parameters of starting pigs. A total of 50 pigs, with initial weight of 11.14±0.24 kg; were distributed in a randomized blocks design with five...
The objective of this study was to evaluate dietary lycopene levels on the immune responses of finishing pigs. Forty barrows and 40 gilts, averaging 75.04 ± 1.6 kg of initial weight, were allotted in a randomised blocks design arranged in a 2 × 5 factorial scheme, consisting of two sexes (males and females) and five lycopene levels (0, 12.5, 25.0,...
A proteína é o componente que mais interfere no crescimento animal, influenciando parâmetros como o ganho de peso, o consumo diário de ração e a conversão alimentar. Este componente orgânico esta constituído por unidades polimerizadas de aminoácidos, que são classificados em aminoácidos essenciais e não essenciais. Os aminoácidos de cadeia ramifica...
This study aimed to determine the SID isoleucine (Ile) requirement of starting barrows fed low crude protein. Two experiments were carried out. Experiment 1: Ten crossbred barrows were used in order to determine the SID AA of the basal diet (treatment with the lowest SID Ile level used in the growth performance experiment), averaging 15.00 ± 0.27 k...
This study aimed to evaluate the effects of dietary SID methionine+cystine (Met+Cys) levels and vitamin B6 (B6) supplementation on performance, blood parameters and enzymes expression of finishing barrows. Fifty-six crossbred barrows (Talent × Topigs 20) averaging 75.11 ± 1.84 kg of body weight (BW) were distributed in a completely randomised block...
The objective was to evaluate, through life cycle assessment and with experimental data, the impact of producing starter pigs (from 15 to 30 kg) fed diets with different crude protein (CP) levels. In Trial I (performance), 28 crossbred barrow piglets, with an initial average weight of 15.3 ± 1.15 kg were divided up in a randomized block design with...
The objective of this work was to evaluate the effects of lycopene 10% extract levels in the diet of pigs, barrows, and gilts on the gene expression of antioxidant enzymes in the liver. Fifteen barrows and 15 gilts (Piétrain × Landrace × Large White) with an initial weight of 75.23 ± 1.13 kg were used. Animals were distributed in a randomized block...
The chemical composition of corn is variable and the knowledge of its chemical and energetic composition is required for an accurate formulation of the diet. This study aimed to determine the chemical composition, that is, dry matter (DM), mineral matter (MM), neutral detergent fiber (NDF), acid detergent fiber (ADF), ether extract (EE), crude prot...
This study aimed to fit prediction equations of the ME from the chemical composition of corn obtained from different harvests for piglets. Two experiments were carried out in a controlled-temperature room to determine the ME values of 18 corn cultivars. In Exp. 1 and 2, the corn from the second (planting from January–March) and the first (planting...
Environmental impacts of livestock systems, especially pig production, have come under increasing debate in recent years. The challenge
is in meeting the growing demand for food at an affordable cost, without compromising environmental integrity. Previous studies have shown that feed
production is responsible for the majority of CO2-eq. emission re...
This study was carried out to evaluate the effect of different levels of standardized ileal digestible (SID) methionine + cystine (Met+Cys) and vitamin B6 supplementation on the performance, blood variables, and gene expression of enzymes involved in methionine metabolism in female pigs between 75 and 100 kg. Fifty six female pigs were used (Talent...
The environmental impacts of livestock system, especially pig production, have come under increase debate in recent years. The challenge is meeting the growing demand for food at an affordable cost, without compromising the environmental integrity. Previous studies have shown that feed production is responsible for the majority of CO2eq. emission...
RESUMO Foram conduzidos dois experimentos, com o objetivo de estimar a exigência de valina e isoleucina digestível para codornas de corte em crescimento. No experimento 1, foram utilizadas 2.160 codornas de corte de um dia de idade, não sexadas, distribuídas em um delineamento inteiramente ao acaso, com arranjo fatorial 4x4, sendo quatro níveis de...
The objective of this study was to determine the chemical composition, apparent metabolizable energy (AME), apparent metabolizable energy corrected for nitrogen balance (AMEn) and the metabolizability of dry matter (DM), crude protein (CP), ether extract (EE) and neutral detergent fiber (NDF) of passion fruit seed meal (PFM) for quails. One hundred...
The objective of this study was to evaluate with life cycle assessment (LCA) the effects of the addition of feed-use amino acids (FU-AA), on the environmental impacts of pig production in Brazil. The LCA considered the process of pig fattening in South Region of Brazil, including production and transport of feed ingredients and complete feeds, rais...
Tryptophan (Trp) is involved in regulation of animal behaviour, since it originates serotonin and melatonin, especially in low crude protein diets, and Trp metabolism requires B6 vitamin (B6) as enzymatic cofactor. The objective of this study was to feed low protein diets with different levels of standardized ileal digestible (SID) Trp and B6 for b...
Aiming at identifying and characterizing the dairy production systems regarding the hygienic and sanitary practices in milking on the sanitary quality of milk, 32 properties were analyzed through the data collection by means of a semi-structured questionnaire. The collected data were analyzed by multivariate statistical analysis, using the Principa...
This study evaluated the effects of standardized ileal digestible (SID) tryptophan and B6 on blood parameters, organ weights, carcass traits, and longissimus lumborum quality of barrows (70-100kg). Sixty-four crossbred barrows averaging 70.77±2.07kg were distributed in a 4×2 factorial with four SID tryptophan levels (0.130, 0.155, 0.180, and 0.205%...
This study aimed to evaluate the effect of heat stress (HS) and selenium supplementation on markers of stress, meat quality and gene expression. For this, meat quails of 42 days of age were fed a diet that either met [0.33 mg/kg, nutritional demand for selenium (SS)] or did not meet [0.11 mg/kg, selenium deficient (SD)] the nutritional demands for...
Objetivou-se com este trabalho avaliar equações para predizer a energia metabolizável (EM) do farelo de soja (FS) para suínos. Foram utilizados sete FS, os quais foram submetidos às análises de matéria seca, proteína bruta, extrato etéreo, fibra em detergente neutro, fibra em detergente ácido, matéria mineral, cálcio, fósforo, solubilidade em hidró...
The aim of this study was to evaluate equations to predict the metabolizable energy (ME) of soybean meal (SBM) for swine. Seven SBM were used, which were analyzed for dry matter, crude protein, ether extract, neutral detergent fiber (NDF), acid detergent fiber (ADF), ash, calcium, phosphorus, solubility in potassium hydroxide (KOH) and urease index...
The prediction of metabolizable energy (ME) of meat and bone meal (MBM) for pigs is an interesting tool, however, used models to predict these values must be validated in order to garantee higher precision. The aim of this study was to determine the chemical and energetic composition of different types of MBM for pigs and to adjust and validate mod...
The digestible amino acid (AA) determination of ingredients, or experimental diets, are essential in obtaining the real levels of AA that are being studied, as well as of other indispensable AA, because the lack of a single indispensable AA may limit pig growth performance. Two experiments were conducted to determine the optimum levels and the idea...
Two experiments were carried out to determine the nutritional value of neutralized semi-purified glycerin (NSPG) and to evaluate the performance of pre-starting piglets (6-15 kg) fed on diets containing increasing levels of NSPG. In Experiment I, a digestibility trial with 30 barrows (11.80 ± 5.12 kg live weight) was conducted, in which they were a...
The metabolizable energy (ME) determination for foods used in quail diets, through metabolism assays, takes time, infrastructure and financial resources, which makes the development of prediction equations based on proximal composition of foods to estimate the ME values of particular interest. The objective of this study was to adjust the predictio...
O objetivo do presente estudo foi avaliar a qualidade de nove amostras de leites coletadas de tanque de expansão na região de Maringá -PR, tendo em vista os padrões estabelecidos pela Instrução Normativa 62. Foram isolados microorganismos Gram negativos e determinado o perfil de resistência a antimicrobianos de 29 cepas de Staphylococcus spp. e de...
Two experiments were carried out in Paraná State, Brazil, to evaluate the nutritional value of passion fruit seed meal (PFM) and to study the effect of PFM on growth performance, carcass, and blood characteristics in starter pigs (Topigs 20 × Tybor). In experiment 1, 25 castrated males, averaging 19.1-kg body weight, were individually fed in a comp...
The objective of the current work was to evaluate the use of oral probiotics comprised of viable and inactivated Lactobacillus spp. (referred to herein as "pool" of Lactobacillus spp.) on the performance, intestinal microbiota and blood parameters of piglets from birth to 35 days of age. Lactation piglets (n=108), with an average initial weight of...
This trial aimed to evaluatethe bioavailability of DL-2-hydroxy-4-(methyl) butanoic acid (DL-HMBA) and a poly-herbalingredient (PHI) in relation to DL-methionine (DLM) on broilers. A sample of 1100 broilerchickens of the Cobb 500 strain, both male and female, were fed either a basal diet withoutindustrial methionine supplementation or a basal diet...
Foram colhidas 50 amostras de leite as quais foram positivas ao California Mastitis Test (CMT). Objetivou-se com este estudo avaliar a influencia da contagem de celulas somaticas (CCS) sobre a qualidade do leite. Amostras de cinco ml de leite foram homogeneizadas e semeadas na superficie de Agar Sangue e incubadas em estufa a 37oC/24-48hs. Os ECP f...