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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...
Yeast chromium and digestible lysine levels in finishing pigs subjected to high...
Santos,Alexandre Pereira dos; Kiefer,Charles; Nascimento,Karina Márcia Ribeiro de Souza; Corassa,Anderson; Silva,Jéssica Lira daABSTRACT: This study evaluated the effects of chromium yeast and digestible lysine levels on the performance and carcass characteristics of finishing pigs. Sixty-four barrows with an initial weight of 72.77 ± 7.20 kg and final weight of 119.44 ± 9.47 kg were used, distributed in a 2 x 2 factorial scheme, with two levels of chromium yeast (Cr0: 0 ppb and Cr800: 800 ppb) and two levels of digestible lysine (L0: r...
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...
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...