Comparison of Broiler Strain Crosses Developed in the US and UK Using Corn and Wheat Based Feeds: Live Performance and Processing of Males for Nine Piece Cuts

Effect of added l-glutamic acid on male broiler performance when using wheat- or corn-based diets and 2 different anticoccidials

“…Jackson et al [19] did not find any benefit on BW of turkeys from 5 to 7 wk of age from adding 4% Glu to the diets, even though the diet contained adequate CP (26%). Feeding wheat-based diets to broilers for a 6-wk period supported heavier BW at 3 and 6 wk of age [3], contrary to results of the current study. Feed:gain ratios of the wheat-fed birds in that study were higher compared with broilers fed the corn diets, which was also observed in the present study.…”

“…Feed:gain ratios of the wheat-fed birds in that study were higher compared with broilers fed the corn diets, which was also observed in the present study. The diets used by Moran et al [3] were not isocaloric or isonitrogenous, but instead were formulated to represent typical UK-type (wheat) or US-type (corn) feeds; thus, the UK feeds contained higher protein and certain EAA levels compared with the respective US diets for the starter and grower phases. The US diets contained a higher ME level compared with the UK diets, which would account for the improved feed conversion observed for the birds fed those diets.…”

“…This might be a factor that could influence carcass quality, especially the level of Glu, which is pivotal in the formation of other NEAA, particularly Pro. Although working with wheat-and corn-based diets that were not isonitrogenous or isocaloric, Moran et al [3], noted that the US (corn-based) diets contained a higher ME level compared with the United Kingdom (UK; wheat-based) diets, which accounted for the improved feed conversion observed for the birds fed those diets. However, Pettersson [4] found that broiler BW and feed conversion at 21 and 35 d of age were not affected by the use of wheat in corn-based diets when diets were formulated to be isonitrogenous and isocaloric.…”

Influence of feed form and nutritional characteristics of the diets on pullet performance and egg-laying hen productivity

“…In pullets, Frikha et al (2009b) reported higher ADG in pullets fed corn than in pullets fed wheat, both diets being supplemented with enzymes. In contrast, Moran et al (1993) observed better productive performance with wheat than with corn in Ross broilers fed pelleted feeds from 1 to 42 d of age. The reasons for these discrepancies are unknown but might be related to the energy value given to the 2 cereals as well as the use of different enzyme complexes and different criteria when estimating the increase in energy value of the cereals because of enzyme supplementation.…”

Influence of particle size of the cereal of the diet on egg production, egg quality, and the development of the gastrointestinal tract of brown-egg laying hens

“…Ruiz et al (1987) reported similar BWG and FCR in broilers fed mash when corn was substituted by wheat. Moreover, Moran et al (1993) reported better growth performance in birds fed wheat than in birds fed corn from 1 to 42 d of age. Marquardt et al (1994) compared corn, wheat, and barley as the main ingredient in broiler diets from 7 to 21 d of age, and reported greater feed intake (FI) and FCR in birds fed corn.…”