Effects of feed form on growth performance and processing yields of broiler chickens during a 42-day production period

Abstract

Primary Audience: Feed Mill Managers, Live Production Personnel, Nutritionists SUMMARYMeat birds fed high-quality pellets exhibit advantages in rate and efficiency of growth over birds fed poorer quality pellets. However, the associated feed manufacturing cost and reduced production rates to obtain high-quality pellets are viewed by the industry as offsetting the benefits in broiler performance provided by high-quality pellets. With the combination of increased costs for utilities in the feed mill and for feed ingredients, strategies are needed to conserve milling costs while optimizing the efficiency of broiler growth. In this study, we evaluated the effects of feed form on live performance and meat yield of broiler chickens during a 42-d production period. Four treatments were provided from 18 to 42 d of age: 1) high-quality pellets (88% pellet durability index), 2) low-quality pellets (66% pellet durability index), 3) a proportion of the formulated corn added post-pellet (89% pellet durability index), and 4) mash (corn was ground via a roller mill). Broilers fed the high-quality pellets had higher cumulative BW gain and consumed more feed than birds fed low-quality pellets. Mash-fed broilers had poorer growth performance and less meat recovery than birds in the other treatments. Adding corn post-pellet resulted in broilers having similar performance and meat yields compared with those fed high-quality pellets. In this study, we confirm that adding corn post-pellet does not negatively affect growth performance and meat yield. Feeding broilers high-quality pellets provides a benefit in growth rate over feeding low-quality pellets by increasing feed consumption.Means within a column without a common superscript differ (P < 0.05). 1 Values are least squares means of 8 replicate pens with 12 broilers per pen. 2 Yields are defined as grams of tissue/100 g of BW.

Effect of phytase with or without multienzyme supplementation on performance and nutrient digestibility of young broiler chicks fed mash or crumble diets

“…Phytase and/or avizyme improved BWG and FCR while it decreased feed intake (Attia et al, 2001;AlHarthi, 2006) showing that diet supplementation with a combination of avizyme and phytase significantly increased growth during days 7-21 of age; this could be attributed to the presence of amylase and NSP degrading enzymes (Cowieson et al, 2003;Ghazalah et al, 2005). The form of feed and/or two enzymes had no significant effect on mortality rate; this is similar to reports by Deaton (1992), Cerrate et al (2009) and Dozier et al (2010). Jahan et al (2006) and Tufarelli et al (2011) reported that the physical form of diet had no influence on the health status of poultry.…”

Feeding behaviour of broiler chickens: a review on the biomechanical characteristics

“…Likewise, Moritz et al (2001) suggest that the pellets of high quality (PDI; 87%) improve feed efficiency compared with lower quality (IDP, 62%). Some recent studies indicate that the supply of a lower quality pelleted diet, with the addition of 20 to 35% of milled maize in both growing and final phase of rearing, can promote a better cost-benefit, since performance and meat yield are similar to those birds that are fed only with high-quality pellet (Clark et al, 2009;Dozier III et al, 2009;Dozier III et al, 2010).…”

The Impact of Different Dietary Forms (Mash, Crumble and Pellets) on Some Growth Traits and Carcass Characteristics of Broilers

“…April 2016 | Volume 4 | Issue 2 | Page 34 several researchers (Amerah et al, 2007;Zang et al, 2009;Dozier et al, 2010;Zohair et al, 2012;Lv et al, 2015). The advantage of crumble and pellet may result from an increase in appetite and diet density and a decrease in feed waste ( Jensen, 2000).…”