16 documents found, page 1 of 2
Chromium and energy restriction as substitutes for ractopamine in finishing gil...
Farias,Taynah Vieira Aguiar; Kiefer,Charles; Nascimento,Karina Marcia Ribeiro de Souza; Corassa,Anderson; Alencar,Stephan Alexander da SilvaABSTRACT: This study evaluated chromium supplements and energy restriction as substitutes for ractopamine in the diets of late finishing gilts. Sixty gilts were used, with initial weights of 98.87 ± 0.25 kg and final weights of 122.69 ± 10.97 kg, distributed in a randomized block design with five diets: control; yeast chromium (0.8 ppm); chromium picolinate (0.48 ppm); ractopamine (20 ppm) and energy restrictio...
Lipid profile of subcutaneous fat, growth performance, and carcass characterist...
Marçal,Danilo Alves; Kiefer,Charles; Alencar,Stephan Alexander da Silva; Farias,Taynah Vieira Aguiar; Santos,Luana Cristiane dos; Viana,Luiz HenriqueABSTRACT: This study identified the effects of dietary supplementation with ractopamine, chromium picolinate, chromium yeast, or an energetic feed restriction on the growth performance and lipid profile of subcutaneous fat, in late finishing gilts. Twenty genetically similar gilts with initial body weight of 105.35 ± 4.77 kg and a final body weight of 131.37 ± 5.58 kg were distributed in a completely randomized...
Effects of negative pressure and directed ducted cooling systems on the perform...
Silva,Ariadne Maria Portilho Saturnino da; Kiefer,Charles; Nascimento,Karina Márcia Ribeiro de Souza; Corassa,Anderson; Sarturi,Débora MinettiABSTRACT The objective of the present study was to evaluate the effects of cooling systems by negative pressure versus directed ducts on the performance of lactating sows and their litter. The experiment was conducted in a tropical climatic region in Brazil. Ninety-four lactating sows during 26.2±1.7 days of lactation were included with their 1,236 piglets. Sows were distributed using a completely randomized bl...
Nutritional plans of net energy with a constant calorie:nutrient ratio on the p...
Rodrigues,Gabriela Puhl; Kiefer,Charles; Nascimento,Karina Márcia Ribeiro de Souza; Corassa,Anderson; Silva,Jéssica Lira da; Silva,Camilla MendonçaABSTRACT This study was conducted to evaluate different nutritional plans of net energy (NE) with a constant calorie:nutrient ratio on the performance of piglets from 7 to 30 kg. Sixty barrows with an initial weight of 7.11±0.89 kg were distributed among five nutritional plans: two NE-decreasing plans (A and B, starting from NE concentrations of 2.47 and 2.52 Mcal kg−1, respectively, and ending both at 2.37 Mca...
Dietary chromium yeast supplementation length in diets for growing-finishing pigs
Sanches,Danilo de Souza; Garcia,Elis Regina de Moraes; Rodrigues,Gabriela Puhl; Kiefer,Charles; Marçal,Danilo Alves; Alencar,Stephan Alexander da SilvaABSTRACT This study aimed to evaluate different periods of chromium yeast (CrY) supplementation on growth performance and quantitative carcass characteristics of growing-finishing pigs. We used eighty barrows (Duroc/Pietran × Large White/Landrace) with an initial body weight of 24.5±2.4 kg. A completely randomized block design was used within four periods of dietary CrY supplementation (control diet: CrY-free, ...
Meta-analysis of recommended digestible lysine levels for primiparous lactating...
Garcia,Amélia Maria Lima; Kiefer,Charles; Nascimento,Karina Márcia Ribeiro de Souza; Lehnen,Cheila Roberta; Hauschild,Luciano; Silva,Camilla MendonçaABSTRACT: A meta-analysis was carried out to evaluate the recommended levels of digestible lysine and its influence on the productive performance of primiparous lactating sows. The database consisted of 26 publications, 138 diets and 3,820 sows was developed from articles on the association between, lysine, crude protein and lactating primiparous sows. The digestible lysine levels of the studies ranged from 0.2...
Sequential metabolizable energy plans for piglets from 7 to 30 kg
Silva,Jéssica Lira da; Kiefer,Charles; Nascimento,Karina Márcia Ribeiro de Souza; Corassa,Anderson; Carvalho,Kelly Cristina NunesABSTRACT: The objective of this study was to evaluate sequential metabolizable energy (ME) plans, maintaining the lysine: calorie ratio for piglets from 7 to 30 kg. Forty eight female piglets with initial weight of 6.9 ± 1.2 kg and final weight of 30.5 ± 3.8 kg were randomly allocated in a randomized complete blocks design to three nutritional plans with eight replicates and two animals per experimental unit. S...
Nutritional plans of digestible phosphorus for gilts from 30 to 100 kg
Carvalho,Kelly Cristina Nunes; Kiefer,Charles; Nascimento,Karina Márcia Ribeiro de Souza; Santos,Tânia Mara Baptista dos; Bonin,Marina de NadaiABSTRACT The objective of this study was to evaluate sequential digestible phosphorus levels for gilts from 30 to 100 kg. Sixty gilts were used, with an initial weight of 29.98±3.37 kg and final weight of 100.66±8.82 kg, distributed in a randomized block design, with five nutritional digestible phosphorus levels: 2.19-1.88-1.68, 2.69-2.38-2.18, 3.19-2.88-2.68, 3.69-3.38-3.18, and 4.19-3.88-3.68 g kg−1, respecti...
Propolis extract in tshe diet of weaned piglets
Gonçalves,Liliane Maria Piano; Kiefer,Charles; Silva,Camilla Mendonça; Leal,Cássia Rejane Brito; Alencar,Stephan Alexander da SilvaABSTRACT: This study was conducted to assess the use of propolis ethanolic extract as an alternative to performance-enhancing antibiotics for piglets. Seventy piglets weaned at 21 days of age, with initial weights of 7.3±0.4kg and final weights of 24.9±1.2kg, were randomly assigned to five diets: positive control (diet with 200ppm antibiotic); negative control (diet without growth promoter); and diets with 100,...
Ractopamine concentration on the lipid profile of swine fat and meat
Alencar,Stephan Alexander da Silva; Kiefer,Charles; Nascimento,Karina Márcia Ribeiro de Souza; Viana,Luiz Henrique; Gonçalves,Liliane Maria PianoABSTRACT: This study was conducted to evaluate the effect of ractopamine concentrations on swine fat and meat lipid profiles. Ninety finishing barrows, initially weighing 71.9±4.4kg, were distributed in a randomized block design in three ractopamine concentrations (0, 10 and 20ppm) with fifteen replicates of two animals in each. Gas chromatography was used to analyze the lipid profiles of backfat and meat. The ...