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Introduction Crossbreeding is a method of genetic improvement [1]. It produces chickens that will be better in different economic traits, such as growth rate, feed efficiency, age at first egg, and carcass characteristics [1,2]. The superiority of crossbreeds over purebreeds in some of the above-mentioned productive and reproductive traits was confirmed by many scholars [3]. Many scholars evaluated the assessment of reciprocal crossbreeds for different breeds in different...
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MetAMINO® Atlas: Essential Insights for Animal Nutrition Professionals
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1. Introduction The period after broilers hatch is critical for development and adaptation of the small intestine to nutritional changes [1–5]. Additionally, during the post-hatch period the broilers immune system is naïve and skeletal muscle has the greatest metabolic demand of any system. Post-hatch nutrition has the potential to program life-long immune and muscle metabolism. Restriction of energy and amino acid density during the first 14 days hinders...
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Introduction Poultry producers attempt to control infectious diseases through a variety of means, including appropriate farm management practices and breeding genetically resistant lines (Sartika et al. 2011; Scott et al. 2018). Unfortunately, existing farming conditions favour increased chicken densities in poultry houses, increasing the risk of spreading entero-pathogens such as Salmonella and Clostridium spp. (FAO 2013). For over half a century, veterinarians and poultry...
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Effectiveness of Bacillus licheniformis-Fermented Products and Their Derived Antimicrobial Lipopeptides in Controlling Coccidiosis in Broilers (Extract)
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INTRODUCTION Coccidiosis is a major enteric disease of chickens that is caused by several distinct species of Eimeria protozoan parasites infecting different areas of the gut. Coccidiosis primarily damages epithelial integrity in the intestine decreasing nutrient utilization and resulting in an annual loss of over $3.2 billion in the poultry industry globally (1–3). With the onset of coccidiosis, Eimeria elicits a local inflammatory response in the intestine, increasing...
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1. Introduction Under normal circumstances, excessive free radicals are scavenged by body enzymatic and non-enzymatic antioxidants, but oxidative stress can occur when the amount of oxidant production surpasses the capacity of the body’s antioxidant system [1,2]. Different aspects of avian productive and reproductive performances, such as egg production rate and egg quality traits, as well as fertility and hatchability may be adversely influenced by oxidative...
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Srinivasa Farms and Hy-Line: Pioneering Growth in India’s Poultry Market
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INTRODUCTION Variability in the nutritional value of feed ingredients for poultry (and indeed other livestock species) has been widely reported over several decades and has been the impetus behind a sustained body of research work. For example, Sibbald and Slinger (1962), Mollah et al. (1983), and Leeson et al. (1993) reported variation in the apparent metabolizable energy (AME) content of corn (3,476–3,960 kcal/kg dry matter [DM]), wheat (2,948–3,960 kcal/kg DM),...
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INTRODUCTION Salmonella is a foodborne pathogen of great concern, and often, Salmonella outbreaks are found to originate from poultry (CDC, 2018; CDC, 2019). Every year in the United States, Salmonella is responsible for causing 1.35 million infections, >25,000 hospitalizations, and >400 deaths, and the majority of these illnesses are attributed to food (CDC, 2020). Salmonella's major risk factor in poultry meat and table eggs is its presence in live birds (Hugas and...
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DESCRIPTION OF PROBLEM Broilers have specific essential amino acid requirements that must be met in order to support growth, muscle development, and meat yield (Mack et al., 1999; Zampiga et al., 2018). Continued genetic selection of broiler strains focused on increasing feed intake and meat yield and improving growth efficiency will require adjustments in formulation, particularly in amino acids, in order to adjust for shorter rearing periods to a common body weight. In...
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Introduction Avibacterium paragallinarum (Av. paragallinarum) is a gram-negative bacterium that has been isolated worldwide and is the aetiological agent of infectious coryza (IC), a disease that contributes to significant economic losses in the poultry industry. Clinical signs of IC include nasal discharge, facial swelling, and lacrimation. This disease is associated with reduced egg production, poor growth, and high morbidity [1, 2]. However, in cases with secondary...
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1. Introduction Whey is the valuable by-product of the cheesemaking process resulting after the production of cheese, whey cheese or casein from milk. It represents 90% of the volume and 50% of the solids of milk and it is characterized by its high concentrations of water, lactose and sodium [1,2]. Whey disposal is problematic, due to its high organic matter content and resultant high biological oxygen demand. Large scale commercial cheese plants usually process whey to...
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Avibacterium paragallinarum is the etiologic agent of infectious coryza, an acute respiratory disease of chickens, which is globally distributed and causes serious economic losses in the poultry production industry. It is a Gram-negative, nonmotile, capsulated, facultative anaerobe belonging to the family Pasteurellaceae and is classified in 9 serovars distributed in 3 serogroups (A, B, and C) (1, 2). The study of its genome and virulence factors (hemagglutinin antigen, capsule,...
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Improving poultry meat quality along with cutting down the cost of production has been one of the major objectives of most farmers and nutritionists. To achieve this objective, several strategies have been adopted, one of which is dietary energy management. Energy is the foremost important and largest part of poultry feed. This energy is either comes from grains like corn, wheat, soy, etc or through fat. ...
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By Claire Marie Coleman
As the No. 1 poultry producing state in the U.S., Georgia’s poultry industry generates more than $3.8 billion annually. Part of...
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MetAMINO® Atlas: Essential Insights for Animal Nutrition Professionals
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Using hypothesis-driven data mining, a UGA research team led by Xiangyu Deng of UGA’s Center for Food Safety analyzed over 30,000 genomes of Salmonella Enteritidis obtained from global sources and the international...
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by Sam Shafer
Are rice paddies and duck operations a match made in heaven? In a recent Poultry Science ® study, researchers with Yangzhou University investigated the effects of integrating ducks into a rice farming system on duck carcass traits, meat quality, amino acid, and fatty acid composition.
The team found that a rice-duck (RD) farming system improved the carcass traits, intramuscular fat, essential amino acids, and polyunsaturated fatty...
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