Bruno A N Silva

Federal University of Minas Gerais | UFMG · Instituto de Ciências Agrárias (ICA)

Current gestating sow feeding strategies are based on using a single diet regardless of parity or gestation stage. Precision feeding (PF) of the individual sows allows dynamic changes in aminoacid and energy requirements throughout gestation. The hypothesis of the study was that meeting the daily predicted amino acid and energy demands of gestating...

The aim of this study was to evaluate the dietary supplementation of organic selenium (Se) and vitamin E for sows from 1st and 2nd parity order, without adiabatic cooling on physiological parameters, reproductive performance, milk composition, litter performance and blood concentrations of antioxidant enzymes. A total of 96 sows were allotted in a...

The study aimed to evaluate the effects of dietary Bacillus subtilis DSM 32540 supplementation with or without different fiber sources for piglets. A total of 150 piglets (7.20 ± 0.98 kg) weaned at 21 days old were assigned to one of five treatments in a randomized block design, with ten replicates and 3 piglets per pen. Treatments consisted of neg...

O estudo avaliou a adição de um flavorizante comercial na água de consumo de leitões, sobre ingestão de água e desempenho durante o período pós-desmame. Foram utilizados 60 leitões, distribuídos em um delineamento em blocos casualizados, compreendendo dois tratamentos: sem e com a adição de um flavorizante comercial - 100 g/ 1000L de inclusão, com...

The objective of the present study was to evaluate the effects of a potentiated (PZnO) and conventional source of zinc oxide (ZnO) on growth performance, bone breaking strength, incidence of diarrhea, and fecal excretion of phosphorus (P), zinc (Zn), and copper (Cu) of nursery pigs. A total of 84 pigs weaned at 21 d of age (6.1 ± 0.9 kg) were allot...

Weaning is a critical time for the young pig. The nutrient requirements of nursery pigs are affected by many factors such as weaning age, antigen exposure, and sex of the pig. Also, since feed intake is influenced by the learning abilities of the animal, any negative post-ingestive experiences with digestion may be linked to the feed and decrease f...

Improvements in sow productivity have raised questions regarding dietary vitamin D recommendations. The present study aimed to evaluate the effects of the housing system with access to sunlight exposure and supplementation of 25-hydroxicholecalciferol on performance and serum levels of 25(OH)D3 in sows during gestation and lactation. Sows were dist...

The study aimed at evaluating the effects of high ambient temperature (HT: 30 °C) on the thermoregulatory responses and performance of commercial and Piau crossbred (Brazilian Piau breed sires × commercial genotype dams) growing pigs. Commercial and Piau crossbred pigs were reared under thermoneutral (TN: 22 °C) or HT conditions during a 14-day exp...

Feed additives can be used as potential strategies to enhance the efficiency of nutrient utilization by the sow can impact on the reduction of feed costs and in addition improve sow and litter health. The objective of this study was to evaluate the impact of the supplementation of virginiamycin (VM) in diets for gestating and lactating sows over tw...

The present study aimed to evaluate the impact of a mycotoxin deactivator in diets containing added mycotoxins for gestating and lactating gilts on their performance. A total of 60 gilts (LD x LW) were used. After insemination the gilts were distributed among 3 dietary treatments according to a randomized block design: a negative control (CON); myc...

Increasing voluntary feed intake of the sow is a major challenge for nutritionists in tropical climate conditions. The present study aimed to evaluate the impact of the dietary supplementation of a feed flavour for sows during lactation on their feeding behavior and kinetics of daily feed intake under tropical conditions. A total of 60 high-prolifi...

Probiotics are being considered as an alternative means to reduce pathogen infection and improve animal health especially around the time of weaning. The objective of our study was to evaluate the effects of the use of a probiotic in diets for piglets on their performance and intestinal integrity during nursery phase. Thirty-six piglets (18 barrows...

Heat stress can cause changes in the feeding behaviour of lactating sows. The present study aimed to evaluate the impacts of season on the feeding behavior and kinetics of daily feed intake of modern high prolific sows under tropical conditions. A total of 80 high-prolific mixed parity sows divided into 10 batches of 8 sows each were used. Individu...

Water is an absolute requirement in the daily needs of the pig. It has been suggested that after weaning, pigs may not consume enough water which impacts in their hydration. It is commonly known that providing water to piglets encourages higher feed intake and improves nutrient absorption, with a positive impact on weight gain and on post-weaning f...

Ingestion of mycotoxins can result in many problems, including decreased growth rates and immune suppression. The present study aimed to evaluate the impact of the supplementation of a mycotoxin deactivator composed by adsorbent clay minerals, inactivated fermentation extracts of Saccharomyces cerevisiae, blend of antioxidants, organic acids and bo...

A total of 60 mixed parity sows were used in our study to evaluate the impact of the supplementation of a feed flavour during lactation on their feeding behaviour under tropical climatic conditions. Sows were distributed in a 2 x 2 factorial experimental design: two seasons: hot and cool; and two diets: control diet and a diet with the inclusion of...

Manejar as porcas em lactação adequadamente quando submetidas ao estresse térmico é fundamental para a indústria suinícola. A alta temperatura combinada com a umidade elevada faz com que o desempenho seja comprometido das matrizes em lactação, como efeitos desse estresse provocado pelo calor, as porcas diminuem a ingestão de alimento e consequentem...

This study was done to determine the best value of the total electrolyte balance (BET) concerning the variables of performance and egg quality of the laying hens. We investigated 240 Hy-Line Brown laying hens, of 30 to 46 weeks of age, adopting the completely randomized experimental design, which included five treatments (1000, 1250, 1500, 1750 and...

Water is an absolute requirement in the daily needs of the pig. It has been suggested that when sows have a limited milk production, piglets may not consume enough water which will impact on their hydration. Eighty mixed parity sows of a high prolificacy genetic line were used to evaluate the impact of a flavor added to the drinking water for pigle...

Under heat stress, sows reduce voluntary feed intake to reduce heat production. To improve the health and performance of sows, live yeasts have been used, and may have potential to reduce heat stress. Therefore, the present study aimed to evaluate the impact of supplementation of two levels of the live yeast Saccharomyces cerevisiae var. boulardii...

The study aimed to evaluate the impact of the supplementation on post weaning diets of the conventional source of zinc oxide (ZnO) and/or a potentiated source of zinc oxide (PZnO) and different (P) levels on productive performance, incidence of diarrhea, (Zn) and (Cu) fecal excretion. Eighty-four pigs weaned at 21 days of age were allocated in a ra...

Vitamin D is an essential key modulator of metabolism in pigs. Improvements in sow productivity have raised questions regarding dietary vitamin recommendations. In this sense, vitamin D serum levels could be limiting to attend high demanding phases. The present study aimed to study the impact of housing system with access to sunlight exposure and s...

The effects of the oral supplementation of probiotics on the performance and intestinal histo-morphology of the duodenal, jejunal, and ileal mucosa, comparing with two different genetic lines (purebred Large White or crossbred Large White x Landrace) of suckling piglets were evaluated between 2 and 19 days of age. In total, 276 piglets were distrib...

A maior parte dos pequenos produtores rurais no Brasil tem em atividades de criação de suínos caipira uma alternativa para obtenção de alimento de alto valor nutritivo e de rentabilidade. O objetivo deste trabalho foi implantar e desenvolver um sistema de produção extensivo sustentável de suínos, nos centros de irradiação e manejo agroecológico nas...

The aim of this study was to evaluate dietary supplementation of sodium butyrate for mixed-parity sows during lactation on reproductive performance, milk composition, blood parameters and litter performance. A total of 192 sows were distributed in a completely randomized design in a 4 × 4 factorial arrangement, considering 4 experimental diets (die...

Guanidinoacetic acid (GAA) is an amino acid derivative and natural precursor of creatine. Creatine is synthesized from GAA in the liver, which in turn is synthesized from arginine and glycine in the kidney. Because GAA is the direct precursor of creatine, GAA should also be capable of sparing arginine and improving energy efficiency of gestating an...

ANÁLISE ESTRUTURAL DE INSTALAÇÕES SUINÍCOLAS VISANDO MELHORIAS NOS ÍNDICES DE CONFORTO TÉRMICO LAILA TUPINAMBÁ MOTA1, LEONARDO FRANÇA DA SILVA2, IRENE MENEGALI 3, BRUNO ALEXANDER NUNES SILVA 3 1 Instituto de Ciências Agrárias da Universidade Federal de Minas Gerais ICA –UFMG, Av. Universitária, 1000 - Universitário, Montes Claros, Minas Gerais, Bra...

The dietary inclusion of feed additives to improve the carcass characteristics of the final product is of great importance for the pork production chain. The aim of our study was to evaluate the effects of the association of ractopamine ( RAC ) and conjugated linoleic acid ( CLA ) on the performance traits of finishing pigs during the last 26 days...

The aim of this study was to evaluate the effects of guanidinoacetic acid supplementation for sows and their litter on performance, blood parameters and economic viability of piglets at nursery phase. A total of 80 high-prolific mixed-parity sows from 3rd and 4th parity were randomly distributed between two treatments: control diet and diet supplem...

Three hundred mixed parity sows of a high prolificacy genetic line were used to evaluate the impact of the supplementation of different levels of feed flavor during lactation on their productive and reproductive performance under tropical conditions. Sows were distributed in a completely randomized experimental design among 3 dietary treatments: co...

Two consecutive experiments were conducted using 480 pigs each with six replicate pens per treatment and 10 pigs per pen to evaluate the effect of standardized ileal digestible (SID) Lys (0.81, 0.91, 1.01, and 1.11%) in diets containing ractopamine (RAC; 10 or 20 mg kg-1) on growth and carcass traits of barrows in a commercial production system. Th...

Improvements in sow productivity have raised questions regarding dietary mineral recommendations. Current calcium (Ca) levels and/or Ca sources might not support milk requirements of the larger litter in the modern sow. Therefore, four hundred and eighty mixed parity sows of a high prolificacy genetic line were used to evaluate the impact of the ca...

Eighteen multiparous Large White sows were used to determine the effects of dietary protein content andlactation stage on milk composition during a 28-d lactation under humid tropical climatic conditions. This study was conducted at the INRA facilities in Guadeloupe, French West Indies (latitude 16°N, longitude 61°W). The average minimum and maximu...

A total of 50 mixed parity sows of a high-prolificacy genetic line were used to evaluate the impact of feed restriction during lactation on their production and reproductive performance and their performance in the subsequent lactation. From day 7 of lactation, sows were distributed according to a completely randomized experimental design into two...

The purpose of this study was to evaluate the effect of temperature and different levels of available phosphorus (aP) on the expression of nine genes encoding electron transport chain proteins in the Longissimus dorsi (LD) muscle of pigs. Two trials were carried out using 48 high-lean growth pigs from two different growth phases: from 15 to 30 kg (...

The increasing demand for efficiency in pork production requires great specialization of all sectors involved in this activity. In this context, the development of strategies that could reduce undesirable traits related with negative effects on piglet survival and postnatal growth and development are essential for the pig industry. Currently, speci...

Thirty mixed-parity Landrace×Large White sows were used to evaluate the effects of the type of farrowing room on 28-day lactation behaviour under tropical conditions during summer. The sows were allocated in a completely randomised design with three treatments with 10 replicates according to parity number and body weight, with each animal being con...

Forty eight piglets with initial body weight of 5.60±0.75kg, weaned at 21days of age were used to investigate the effects of diet protein source on their behavior and performance after weaning. The piglets were distributed in a completely randomized experimental design, composed of three treatments (a control diet with soybean meal and maize, diet...

Eighty six mixed‐parity Large White sows were used to determine the effect of three diets : a normal protein diet (NP), a low protein diet (LP) and a NP diet (NP+) supplemented with essential AA, on 28‐d lactation performance under humid tropical climatic conditions (Guadeloupe) in two seasons. The NP and LP diets supplied the same level of standar...

Eighty-six mixed-parity Large White sows were used to determine the effect of diets with reduced CP content or supplemented with essential AA on 28-d lactation performance under humid tropical climatic conditions. This experiment was conducted in Guadeloupe (West French Indies, latitude 16 degrees N, longitude 61 degrees W) between February 2007 an...

Avaliou-se o efeito da suplementação de cromo sobre o desempenho e o rendimento de cortes de frangos, mantidos em ambiente de alta temperatura, no período de um a 42 dias de idade. Foram utilizados 400 frangos de corte, machos, da linhagem Cobb, em um delineamento experimental inteiramente ao acaso, com cinco tratamentos, 0, 350, 700, 1.050 e 1.400...

The effect of dietary organic chromium supplementation on the performance and yield of prime cuts of male broilers from one to 42 days of age reared under high environmental temperature was evaluated. Four-hundred Cobb male broilers, averaging 38±0.14g were distributed in a simple sample random design with five treatments (0; 350; 700; 1,050; and 1...

Forty-seven mixed-parity Large White sows were used to determine the effect of diets with reduced CP content or supplemented with essential AA on 28-d lactation feeding behavior under humid tropical climatic conditions. The study was conducted at the INRA experimental facilities in Guadeloupe, French West Indies (latitude 16 degrees N, longitude 61...

Fifty nine primiparous sows PIC Camborough 23 were distributed in a completely randomized 2×2 (with and without floor cooling×two dietary treatments) factorial design with 16 sows/treatment, each sow being considered as an experimental unit. Four replicates of sixteen sows each were used during the trial with the objective of evaluating the effects...

Sessenta matrizes suínas pluríparas (média de quatro partos) de linhagem comercial, com peso inicial de 262,7 ± 22,50 kg, foram utilizadas para avaliar o efeito de níveis de treonina digestível sobre os desempenhos produtivo e reprodutivo durante 16,02 ± 1,17 dias de lactação. Os animais foram distribuídos em delineamento inteiramente casualizado,...

Sixty pluriparous sows (average of four farrowing) from commercial line, with initial weight of 262.7 ± 22.50 kg, were used to evaluate the effect of digestible threonine levels on productive and reproductive performance during 16.02 ± 1.17 days of lactation. The animals were distributed to a completely randomized design, with 4 diets and 15 replic...

This study was conducted to evaluate the effect of different levels of digestible lysine in diets on the performance of piglets from 6 to 15 kg. One hundred and twenty piglets (80 castrated males and 40 females) were used. The piglets were allotted to a completely randomized block design, with five treatments (1.06, 1.16, 1.26, 1.36, and 1.46% of d...

Um experimento foi realizado com o objetivo de avaliar os efeitos da ingestão de PB durante a gestação sobre os desempenhos produtivo e reprodutivo de fêmeas suínas gestantes de 4º ou 5º parto e de suas respectivas leitegadas. Foram utilizadas 25 matrizes mestiças (189,0±16,46 kg) com idade reprodutiva de 4º parto, distribuídas aleatoriamente em de...

An experiment was conducted to evaluate the effects of CP intake during gestation on productive and reproductive performance of pregnant sows of 4th or 5th parturition orders. A total of 25 crossbred sows averaging 189.0±16.46 kg at 4th parity order was allotted to a completely randomized experimental design with three treatments (10, 13.5, and 17%...

Forty Landrace×Large White lactating sows were used to evaluate the effects of cooling of the floor when maintained under high temperature conditions during summer on their productive and reproductive performance. The sows were allocated in a completely randomized design with two treatments with 20 replicates according to parity number and body wei...

Foram utilizadas 65 porcas (Large White x Landrace) com 217,36 ± 21,35 kg para avaliação de diferentes níveis de lisina total (0,950; 1,025; 1,100; 1,175 e 1,250%) na ração para a fase de 21 dias de lactação. Utilizou-se o delineamento experimental de blocos ao acaso, com cinco tratamentos e 13 repetições, sendo a porca considerada a unidade experi...

Sixty-five crossbred sows (Landrace x Large White) averaging 217.36 ± 21.35 kg were used to evaluate increasing dietary total lysine levels (0.950, 1.025, 1.100, 1.175, and 1.250%) during 21 days of lactation. The experiment was analyzed as a randomized block design, with five treatments, 13 replicates of one sow per experimental unit. The daily to...

This study was carried out to evaluate the effect of environmental temperature on performance, carcass composition and physiological parameters of pigs from 30 to 60 kg of weight. Thirty six barrow (Landrace x Large White) with initial weight of 29.94 ± 0.49 kg, were assigned to a completely randomized experimental design with three treatments six...

Foi realizado um experimento com o objetivo de avaliar os efeitos do resfriamento do piso da maternidade sobre o desempenho produtivo e reprodutivo da porca lactante durante o verão. Utilizaram-se 40 porcas mestiças Landrace x Large White de diferentes ordens de parto. Os animais foram distribuídos em delineamento experimental de blocos ao acaso, d...