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Feed formulation
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Feed represents the primary cost of broiler production, thus the formulation of cost-effective diets that meet broiler nutritional requirements is critical. To ensure this objective is met, nutrient specifications of feed ingredients must be accurately determined. However, Australian broiler nutritionists have expressed concern, as many nutrient specification databases contain dated information or lack Australian specific data. Therefore, the aim of this project was to compile current...
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The feeding program for poultry has a major influence on profitability as feed cost accounts for up to 75% of production cost. Conventionally, it is assumed that requirements are either listed in tables or breeder nutrition guides. The Requirement Approach stems from the broken line, which is a simplification of bird response and implies that at different levels of energy or nutrients, efficiency does not change or it is zero. Bird response is curvilinear and this implies that diminishing...
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Pedro Urriola (University of Minnesota) comments on variation in nutrient composition and energy values, in this Swine It interview with host Laura Greiner....
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INTRODUCTION The physical form of the diet is a tool to improve broiler live performance, especially feed efficiency. However coarse feed particles enhance gizzard function, which was referred to as the pacemarker of gut motility (Xu et al. 2015a, Xu et al. 2015b, Kheravi et al. 2017). Studies respect to particle size impact on health, digestive efficiency and broiler performance were developed more than 60 years ago (Pacheco et al. 2014, Xu et al. 2015a, Xu et al. 2015b)....
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Introduction Sorghum ranks fifth in global cereal production after corn, wheat, rice and barley. Most of the world’s sorghum grain is fed to animals, including poultry, but it is also used for food (Africa) and alcohol (ethanol, beer in Africa and baijiu in China). World sorghum production for the last 5 years averaged about 63 million metric tonne (Mmt), the USA being the largest producer (about 12 Mmt or 18% of world production). Australian production averaged...
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I was surprised when I saw the actual field reports under parallel trial taken on Mash Feed vs. Crumble Feed. It has been observed that everybody in the feed industry gives preference to Crumble/Pellet feed rather than Mash feed. The main reason is its better digestibility, palatability and finally better performance in terms of FCR over mash feed.
But nowadays, due to the use of high quality mixers in mash feed plants, the CV...
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Comparison of industrial lines with a pilot line This article is a follow-up to a previous paper which described...
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Background Investigations in reducing dietary crude protein (CP) in chickens began in the early 1940’s, which commenced nearly a century of exploration in this area of poultry nutrition research. Advances have been made, but many of the hurdles identified in the 1940’s vex poultry nutrition researchers today. Most notably, in the early 1940’s research was carried out in chickens fed various diets substituted with ingredients differing in protein and energy...
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I. INTRODUCTION The most important cost component of broiler feed relates to energy, as this may account for up to 75% of feed costs (van der Klis & Kwakernaak, 2008). Therefore, more accurate evaluation of feed energy in broiler production is imperative for environmental and financial reasons. The metabolisable energy (ME) system is currently the preferred measure for determining energy utilisation in poultry feed. However, this system does not give a complete picture of...
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I. INTRODUCTION Crude protein-reduced broiler diets have the potential to provide tangible advantages in respect of economics, bird welfare, flock health and the environment. Moderate reductions in dietary crude protein (CP) levels can be achieved without compromising broiler performance when coupled with judicious synthetic amino acid inclusions. However, there appears to be a threshold where further CP reductions negatively influence performance, especially FCR and this is...
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I. INTRODUCTION A recent on Australian sorghum by Selle et al. (2017) that sorghum produced in Australia is used almost exclusively for feed, especially cattle, pigs and poultry. The objective of the present study is to assess the response of broiler chickens to diets based on sorghum, when supplemented with a combination of enzymes, targeting different substrates. II. MATERIALS AND METHODS A total of 648 male and female Ross 308 broiler chickens was randomly...
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This study was aimed at assessing endogenous enzyme activities and utilisation of metabolisable energy by broiler chickens fed maize-based diets supplemented with phytase and carbohydrases. Birds were raised in cages in climate-controlled rooms. The jejunum and pancreas were collected at 10 and 24 d for analysis of endogenous digestive enzyme activities. Birds were also sampled at hatch and 24 d and analysed for gross energy, fat and crude protein contents. The data were used to calculate...
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Introduction The usage of antibiotics as a growth promoter is widely banned by European Union-wide in 2006 due to their side effects on animal health and their residues in meat for human health (EU-wide, 2005). Novel and beneficial feed additives including different dietary fibers with adequate amount promotes the growth performances and maintain their immune and gut health (Jha et al., 2020; Jha and Mishra, 2021). Fenugreek is a popular medicinal plant grown in nature, mostly...
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1. Introduction Commercial poultry farming is one of the fastest growing and most promising industries in Bangladesh. Intensive production system, however, depends solely on compound feeds and ingredients cost of which represents 65–70% of total production cost of the poultry farming. Animal originated feed protein materials such as fish meal and meat & bone meal are usually added to poultry feed as high protein sources. Driven by a booming need for livestock...
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Background Canola is an offspring of rapeseed which belongs to the cabbage family or Brassicas. The genus Brassica also contains plants such as cabbage, radish, kale, mustard and cauliflower [10]. Rapeseed oil contains around 25- 45 % erucic acid whereas the meal contains about 110- 150 μmoles/g of aliphatic glucosinolates [12]. Rapeseed was cultivated more than 3000 years ago in India and 2000 years ago in China and Japan. The development of steam power resulted in better...
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INTRODUCTION The suggested BW of broilers (ROSS 308) will increase 50- to 55-fold at the age of 35 d as compared with the day-old chick weight (Aviagen, 2019a). Correct supplementation of dietary amino acids is crucial to support the exponential growth of broilers. Methionine (Met) is the first limiting amino acid in broilers; thus, meeting the requirements of Met plus cystine is crucial. The...
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I. INTRODUCTION The optimum utilization of nutrients, especially energy and protein, by poultry is essential in commercial production. The efficiency of feed utilization has been improved through genetic development (Rege 1994), alongside feed processing and use of feed additives, especially microbial enzymes. Energy utilization in poultry can be measured by assessing metabolizable energy or net energy, which may be for production (NEp) or for maintenance (NEm). The NEp is...
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