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Using near infrared spectroscopy to predict metabolizable energy of corn for pigs
Ferreira,Silvia Letícia; Vasconcellos,Ricardo Souza; Rossi,Robson Marcelo; Paula,Vinicius Ricardo Cambito de; Fachinello,Marcelise ReginaABSTRACT: 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 protein (CP), gross energy (GE) and energetic values of di...
The requirement of valine for gilts in the initial phase is not influenced by m...
Huepa,Laura Marcela Diaz; Castilha,Leandro Dalcin; Ferreira,Silvia Letícia; Monteiro,Alessandra Nardina Trícia Rigo; Costa,Alcides Emanuel Rodrigues daABSTRACT 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 factorial scheme, comprised of two SID leucine levels (1.20 and...
Predicting the metabolizable energy of first and second corn harvests for piglets
Esteves,Lucas Antonio Costa; Oliveira,Newton Tavares Escocard de; Huepa,Laura Marcela Diaz; Ferreira,Silvia Letícia; Castilha,Leandro DalcinABSTRACT 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. Two experiments were conducted to determine the ME value...
Reduction of the crude protein content of diets supplemented with essential ami...
Toledo,Juliana Beatriz; Furlan,Antonio Claudio; Pozza,Paulo Cesar; Carraro,Jocasta; Moresco,Gabriel; Ferreira,Silvia Letícia; Gallego,Adriana GomezTwo experiments were carried out to evaluate the reduction of crude protein (CP) in diets supplemented with synthetic amino acids for piglets of 15 to 30 kg. In the performance assay (Exp I), 60 piglets with initial weight of 15.34±0.87 kg and final weight of 30.08±1.59 kg were distributed in a randomized block design with six replicates, five treatments and two animals per experimental unit. The treatments con...