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Afla-V ONE is the world's FIRST lateral flow strip test capable of measuring total aflatoxins in mixed feeds and pet foods using a universal, barcode based calibration. Once calibrated, the Vertu TOUCH reader stores calibration details for future sample analysis, eliminating common bottlenecks such as excessive pipetting, rinsing and waiting!...
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High pressure sodium (HPS) lights have been used in broiler-breeder houses for decades due to their very high lumen output. The typical 150-watt HPS fixture produces approximately 16,000 lumens of light which is 16 times the amount of light produced by a 75-watt incandescent light bulb. The downside of HPS lighting systems is that in order to...
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Candidate Genes Associated with Survival Following Highly Pathogenic Avian Influenza Infection in Chickens
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Does high humidity affect the performance of exhaust fans? Yes, but probably not as much as you think and not in the way you may believe. Most people believe that humid air is heavier than dry air. After all, humid air has more moisture in it and therefore should weigh more than air that contains less moisture. But, in actuality, humid air...
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Figure 1 illustrates the incoming air temperature for a properly wetted, six-inch evaporative cooling pad, while Figure 2 illustrates the predicted incoming relative humidity. The...
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Though there is a wide range of opinions on the optimal drinking water temperature for young chicks, the fact is farm managers actually have a very limited ability to control the temperature of the water their chicks are drinking because, for all practical purposes, it is determined by house air temperature. If the air temperature is 90°F, the water will be around 90°F. If the air temperature is 80°F, the water temperature will be around 80°F, regardless of what temperature...
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Figure 1 illustrates the amount of water which will evaporate from properly wetted, 15 cm paper evaporative cooling pad system, as a function of outside temperature and relative humidity. The amount of water evaporated is provided in terms of gallons per minute per 100,000 cmh of operating tunnel fan capacity. For example, if a house had...
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I. INTRODUCTION Mycotoxin-contaminated feeds are frequently reported to be more toxic for animals than their purified forms, indicating possible interactions with each other or with the micro-organisms in the animal’s gastrointestinal tract (JECFA, 2002) as bacteria (Galarza-Seeber et al, 2016). The gastrointestinal tract is the largest immune organ, where several immuno-regulatory mechanisms simultaneously defend the body (Belkaid & Hand, 2014). Yet, it is also home...
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Infectious laryngotracheitis (ILT), caused by Gallid herpesvirus type 1, is a highly contagious upper respiratory and conjunctival disease of poultry. The virus (ILTV) is thought to exit the host in respiratory aerosols and enter by inhalation of these. High levels of ILTV DNA have been detected in excreta, dust, blood or plasma and in various organs outside the respiratory tract; raising the possibility of alternative routes of shedding from the host. However, it is not known whether the...
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Abstract published in Current Opinion in Biotechnology 2022, 75:102689. https://doi.org/10.1016/j.copbio.2022.102689. ...
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I. INTRODUCTION Most Australian households consume large numbers of eggs on an annual basis, but we know very little about what members of the broader community think about the practices associated with commercial egg production and the underlying values that they bring to these considerations. A previous study for Australian Eggs (Fisher et al., 2019) examined the values-based elements underlying the consensus in animal science across key areas related to laying hen...
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In the animal food industry, enzymes can help improve animal performance and production economics through a variety of mechanisms: breakdown of substrates in feed and reduction of anti-nutritional substances, such as hydrolysis of phytic acid to improve phosphorus availability.
Marketed enzyme preparations contain the...
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I. INTRODUCTION In accepting the invitation to present a paper on laying hen welfare at APSS 2021, I thought that I would provide an overview of a special issue of Animal Production Science on layer hen welfare that will be published in early 2021. This special issue consists of 19 review papers on the welfare implications of: the production system; development, growth and production; husbandry and behaviour; and health. I had planned to report on the main findings of the...
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Introduction Amino acids (AAs) are natural substances containing both amino and acid groups. Proline, which contains an imino group but not an amino group, is loosely considered as an AA in nutrition and metabolism. 1 Protein (the polymer of AAs) is the major component of growth in animals and has been a focus of nutritional research over the past century. 2 Proteinogenic (protein-creating) in animals are alanine, arginine, asparagine, asparate, cysteine,...
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Identifying individual birds that are suffering or that have compromised health and welfare is key to maintaining high standards of poultry care. Knowing your birds and when they are ill or in pain is imperative for identifying birds that need treatment or that might need to be euthanized....
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Broiler welfare assurance programs specify the standards that producers must follow to sell their broilers, receive a premium, and/or a certification label on their products. Broiler assurance programs differ in the guidelines and audit standards that producers must follow because the missions and goals of each organization...
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This newsletter provides an overview of potential flock predators, how to identify the predator, and approaches to avoid predation in your free-range poultry flock. Predation is a common risk for poultry that are allowed to roam freely outdoors. Predator types may differ depending on the region. Therefore, this newsletter may not cover all...
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Turkeys are an important American cultural icon and Thanksgiving dinner staple. In fact, it is tradition for the US president to “pardon” a turkey each year at an annual White House ceremony. The 2021 turkeys that participated in the ceremony were from Indiana. ...
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Candidate Genes Associated with Survival Following Highly Pathogenic Avian Influenza Infection in Chickens
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1. Introduction For more than 50 years, antibiotic growth promoters (AGPs) have been used in agricultural animal production as a means to increase growth performance through maintained animal health and improved feed efficiency [1]. During the last decades, global concern about development and transference of antimicrobial resistance from animal to human strains is rising [2]. The benefits of AGPs use in production animals are of ten argued to be outweighed by their negative...
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INTRODUCTION It has been well known that branched-chain amino acids (BCAA) (Val, Leu and Ile) are not only substrates for building block protein but they are also involved in intracellular signaling pathways on protein anabolism and stimulatory effects on protein synthesis. Among the 3 BCAA, Leu has been considered most effective in stimulating muscle protein synthesis by modulating the activation of mechanistic target of rapamycin (mTOR) and its downstream effectors, ribosomal...
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