Increasing amino acid density improves growth performance and processing yield in Cobb 700 × MV broilers

Comparative effects of proteases on performance, carcass traits and gut structure of broilers fed diets reduced in protein and amino acids

“…Broiler growth performance is largely influenced by the supply of high levels of digestible AA [27][28][29] and several previous studies have shown growth performance impairment following their dietary reduction [30][31][32][33][34]. However, meeting these requirements involves formulating diets with highly digestible proteinaceous, and very often expensive, feed ingredients.…”

Effects of a Combination of Lysolecithin, Synthetic Emulsifier, and Monoglycerides on Growth Performance, Intestinal Morphology, and Selected Carcass Traits in Broilers Fed Low-Energy Diets

“…In modern genetic lines, selection for fast growth and efficient assimilation of amino acids into muscle has meant that there tends to be a positive correlation between dietary energy and amino acid content and breast (pectoralis major) yield [ 36 ], while fat pad deposition increases [ 1 , 2 ]. Although several authors investigated the effect of lysophospholipids (LPL) on carcass traits [ 8 , 16 , 29 , 34 , 37 , 38 ] improvements in breast meat yield have only been reported by Chen et al [ 16 ].…”

“…The selection for fast growth has also aggravated the burden on the liver, raising the risk of metabolic disorders, including fatty liver disease. Fat deposition in the liver can be encouraged by high levels of saturated dietary fat [ 48 , 49 ], but also by amino acid imbalances, especially that of methionine [ 1 , 2 ]. In our study, a significant reduction of liver weight was observed following LEX supplementation, which could be explained—though liver fat content was not measured directly—by a reduction in fat deposition and a reduced chance of fatty liver disease.…”

“…Modern fast-growing broilers have high energy and amino acid requirements [ 1 , 2 ] and meeting these requirements leads to improved feed efficiency, but also increases diet costs, especially when the price of oils and protein meals is volatile. Increasing the utilization of dietary energy and other nutrients can allow nutritionists to formulate diets to lower basal nutrient levels and lower feed costs.…”