Featured Articles

  • Mar
    06
    PRESS RELEASE: Society-Owned Animal Science Journals Join Forces to Address Challenges in Scientific Publishing


    A group of Editors-in-Chief from leading animal science journals has published a collective perspective on today’s rapidly shifting world of scholarly publishing. Titled “Values Shared by Journals of Learned Societies, Associations, and Scientific Institutions in Animal Science” this jointly authored editorial underscores how society-owned journals preserve scientific integrity, maintain rigorous peer review, and ensure responsible access to research findings—even in an increasingly author-driven environment.

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  • Mar
    06
    Interpretive Summary: Breed and trace mineral source influence the performance of beef heifers during periods of nutrient restriction and grazing forage at early vegetative stage


    This study examined how breed and trace mineral sources affect growth and diarrhea incidence during periods of nutrient restriction and grazing. Breeds consisted of ½ Angus × ½ Nelore (ANE) and Nelore (NE) heifers, whereas mineral sources included sulfate (SUL) or hydroxychloride (HYD) sources of copper, manganese, and zinc offered to heifers from days 0 to 49.

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  • Mar
    06
    Interpretive Summary: Influence of feeding thermally peroxidized lipids on the performance of growing pigs


    Feeding pigs diets with lipids that contain peroxides and aldehydes has been reported to reduce pig performance. Four experiments conducted in growing pigs fed diets containing variable levels of peroxides and aldehydes confirmed that lipid oxidation products have a detrimental effect on pig performance and show that the reduction in daily gain, feed intake, and feed efficiency can be accurately predicted by analyzing dietary concentrations of peroxides and aldehydes.

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  • Mar
    06
    Interpretive Summary: Feeding nursery pigs diets containing peroxidized soybean oil has minimal effects on oxidative status but dramatically reduces serum vitamin E concentrations


    Swine are exposed to a variety of nutritional stressors that can affect their well-being and productivity. One stressor of concern is the consumption of lipids that have been damaged by excessive heating. The current study obtained blood from pigs consuming peroxidized soybean oil and subsequently evaluated for markers of oxidative stress, including plasma vitamin E.

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  • Mar
    06
    Interpretive Summary: Lactobacillus and Saccharomyces fermentation products impact performance and the fecal microbiome in weanling pigs inoculated with enterotoxigenic Escherichia coli


    Enterotoxigenic Escherichia coli (ETEC) causes significant health problems in postweaned pigs causing economic loss. In the past, antimicrobials were key for controlling ETEC until the threat of antimicrobial resistance was globally realized.

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  • Mar
    06
    Interpretive Summary: Polyamines protect porcine sperm from lipopolysaccharide-induced mitochondrial dysfunction and apoptosis via casein kinase 2 activation


    Bacterial contamination is unavoidable during the storage of boar semen. Antibiotics or chemicals in the semen extender do not clear lipopolysaccharide (LPS) released from the Gram-negative bacteria. LPS undermines sperm functionality and efficacy of semen preservation in vitro.

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  • Feb
    20
    Interpretive Summary: Whole stillage inclusion level influences in vitro fiber digestibility and ruminal fermentation of tall fescue hay


    Whole stillage, a byproduct of ethanol production, is frequently available to beef producers as a potential low-cost feed supplement. The acidic pH of whole stillage is a concern for supplementing high-forage diets and its effects on ruminal fiber digestibility and fermentation are not well characterized.

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  • Feb
    20
    Interpretive Summary: Metagenomic detection and genome assembly of novel PRRSV-2 strain using Oxford Nanopore Flongle flow cell


    Porcine reproductive and respiratory syndrome virus (PRRSV) is responsible for a disease characterized by reproductive and respiratory complications in pigs. PRRSV exhibits substantial genetic diversity throughout the genome, so it is important to utilize whole-genome sequencing to accurately depict the full variation present.

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  • Feb
    20
    Interpretive Summary: LncRNA MSTRG.14227.1 regulates the morphogenesis of secondary hair follicles in Inner Mongolia cashmere goats via targeting ADAMTS3 by sponging chi-miR-433


    The cashmere goat is a type of livestock primarily known for its cashmere. Cashmere is a vital raw material in the textile industry, possessing significant economic value. The embryonic stage is the main stage of the formation of hair follicle structures, which directly influence both the yield and quality of cashmere.

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  • Feb
    20
    Interpretive Summary: A meta-analysis of genome-wide association studies to identify candidate genes associated with feed efficiency traits in pigs


    Pig farming is an activity of great relevance for the Brazilian economy and worldwide food security. Feed efficiency, which is defined as the ability of animals to convert feed into performance outputs (e.g., body weight in pigs), is directly related to the long-term sustainability of the pig industry due to its impact on production costs and the environmental footprints of the industry. Therefore, selective breeding for improved feed efficiency has been a primary goal in the pig industry.

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  • Feb
    20
    Interpretive Summary: Influence of source of origin and region of finishing on growth performance and carcass characteristics of finishing heifers fed in the United States


    The objective of this research was to evaluate the growth performance and carcass traits of feedlot heifers sourced and finished in different geographical regions in the United States. Overall, heifers transported to higher ambient temperatures had decreased dry matter intake, final body weight (BW), and carcass quality, but had improved carcass cutability compared to non-transported heifers.

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  • Feb
    20
    Interpretive Summary: Aging oocytes: exploring apoptosis and its impact on embryonic development in common carp (Cyprinus carpio)


    The delay in fertilization after ovulation or retention of ovulated oocytes in the fish body causes postovulatory aging. Postovulatory aging leads to time-dependent deterioration of oocyte quality and loss of fertilization capacity. The mechanisms behind losing oocyte quality and developmental capacity due to postovulatory oocyte aging remain elusive.

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  • Feb
    19
    The Giving Herd - ASAS Foundation Newsletter - February 2025


    The February Edition of The Giving Herd, an ASAS Foundation Newsletter

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  • Feb
    14
    Kristin Hales ASAS Journey


    Kristin Hales ASAS Journey

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  • Feb
    13
    Interpretive Summary: Alleviation of lipopolysaccharide-induced heart inflammation in poultry treated with carnosic acid via the NF-κB and MAPK pathways


    This study explores carnosic acid (CA) from rosemary as a natural feed additive in poultry farming to counter heart inflammation caused by environmental stressors and infections, which often harm growth or lead to sudden death. Researchers tested CA’s protective effects in broilers by treating them with various doses before inducing heart inflammation through lipopolysaccharide.

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  • Feb
    13
    Interpretive Summary: Mogroside V protects lipopolysaccharides-induced lung inflammation chicken via suppressing inflammation mediated by the Th17 through the gut-lung axis


    Frequent respiratory problems during broiler breeding not only affect the growth performance of broilers, but also jeopardize the health and safety production of broilers in serious cases. Luo Han Guo is a traditional medicinal and food plant, and its extract mogroside V (MGV) has biological functions such as blood glucose lowering, bacteriostatic, antioxidant, and antiinflammator.

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  • Feb
    13
    Interpretive Summary: Nutrient use and methane emissions in growing beef fed different protein sources and a pasture-based diet


    Field beans and soybean meal promote better growth and nutrient utilization compared with brewers’ spent grains when fed as the main protein source for growing beef cattle. Growing beef cattle that were fed a diet consisting solely of Italian ryegrass reduced enteric methane emissions per kg of feed consumed without affecting methane intensity but also reduced their growth rate and efficiency in using dietary energy and nitrogen, compared with beef under diets including more concentrate feeds.

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  • Feb
    13
    Interpretive Summary: Impact of dietary supplementation of beef cows with rumen-protected methionine during the periconceptional period on prenatal growth and performance to weaning


    Specific changes in the mother’s uterine environment during pregnancy can have a long-term impact on the progeny. This study examined the effect of supplementing rumen-protected methionine (RP-Met) during the periconceptional period on pre- and postnatal traits of female progeny.

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  • Feb
    13
    Interpretive Summary: Factors affecting the length of productive life in U.S. Katahdin ewes


    Ewe productive life has a key economic role in sheep production, as longer-lived ewes generally contribute more to lamb outputs over time. In this context, the impact of various factors on the length of Katahdin ewe productive life defined as the time between their first and last lambing was evaluated.

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  • Feb
    06
    Interpretive Summary: Differences in severity of reticulo-rumen pH drop in primiparous Holstein cows fed the same diet during transition and early lactation: effects on performance, energy balance, blood metabolites, and reproduction


    Research on nutritional and metabolic factors that influence the production performance and health of cattle is highly important. This study investigated how different severity of ruminal pH drop influences lactation performance, energy balance, and blood metabolites in primiparous cows when these are fed a similar high-grain diet.

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