Lysine and Energy Trends in Feeding Modern Commercial Broilers
Published: March 12, 2019
Summary
INTRODUCTION Globally, different energy and amino acid levels are used in different regions, although it is unknown the magnitude by which these dietary nutrients are influenced by feed cost or biological nutrient requirements. Furthermore, a study that explains nutrient trends, body composition and nutrient efficiency in one systemized approach over time as a way to gain insight into the futu...
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Aviagen
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13 de marzo de 2019
Very interesting article. I understand that it is important to consider that there is no deposition of protein without a corresponding amount of fat, which is defined by the genetics of the animal. Therefore, it seems to us more reasonable to consider that the decrease in the energy requirement would be indicative that the proportion of fat in relation to the deposited protein has decreased with genetic selection. In turn, increased lysine requirement would be associated with increased deposition of body protein. These possible changes in body composition would result in improved feeding efficiency of the birds. Consistently with these considerations, it can be deduced that the increase in the energy demand and the reduction of lysine with the increase of age of the birds, as reported in the text, would occur due to the increase in the ratio of fat to that of protein.
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University of Zabol
18 de marzo de 2019
Very nice article, thanks to authors.
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