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Lysine and metabolyzable energy requirements of lactating sows for subsequent reproductive performance BABT
Santos,José Maurício Gonçalves dos; Moreira,Ivan; Martins,Elias Nunes.
The requirements of lactating sows for total lysine and metabolyzable energy (ME) to support subsequent reproduction performance were evaluated. One hundred and twenty sows were used. The treatments were constituted of eight diets (factorial arrangement of four levels of total lysine: 0.75, 0.90, 1.05 and 1.20%, and two levels of ME: 3,250 and 3,400 kcal ME/kg). There was interaction between lysine and ME on the plasma urea nitrogen (PUN), with linear decrease effect on level of 3,250 kcal ME/kg, and quadratic effect on level of 3,400 kcal ME/kg, with the lowest level of PUN with 1.06% lysine. The reproductive performance in the subsequent farrowing was not affected by the lysine levels and ME, hence, neither the total born nor the born alive differed...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Feed intake; Litter; Plasma urea nitrogen; Weaning-to-estrus interval.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000500006
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Metabolizable energy requirement for starting barrow pigs (15 to 30 kg) fed on the ideal protein concept based diets BABT
Oliveira,Gisele Cristina de; Moreira,Ivan; Fraga,Alessandro Luís; Kutschenko,Marianne; Sartori,Iolanda Maria.
The objective of this study was to determine the metabolizable energy (ME) requirement for starting barrow pigs. Forty-three animals, selected for their high lean gain, were allotted in a completely randomized block design, divided in four treatments with five blocks and two animals in each experimental unit. The diet in Treatment 1 consisted of 3,264 kcal of ME/kg containing 0.96% of digestible lysine, 0.55% of digestible methionine+cystine, 0.60% of digestible threonine, and 0.188% of digestible tryptophan reaching the ideal protein pattern. The diets in Treatments 2, 3, and 4 were similar to the diet in Treatment 1; nevertheless, the levels of ME in Treatments 2, 3, and 4 were 2, 4, and 6% higher than those in Treatment 1. The lysine:ME ratio, was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Synthetic amino acids; Carcass; Performance; Plasma urea nitrogen; Energy requirements.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000600008
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