Featured Articles

  • Mar
    17
    Jim Oltjen's Animal Science Family Tree and Legacy


    Jim Oltjen's family history of animal scientists spans three generations, and ASAS has been part of that journey since 1958. They have been mentored by and mentors to those who are now lifelong friends. He and his wife, Sharon, encourage you to reflect on your animal science family tree and ASAS journey and urge you to consider your legacy with ASAS by becoming a 1908 Society Member and ensuring a bright future for aspiring animal scientists.

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  • Mar
    14
    Interpretive Summary: Green banana flour as a novel functional ingredient in retorted feline diets


    Green banana flour (GBF) is a novel ingredient in the pet food industry but has been gaining popularity in human nutrition. Not only can GBF be a source of dietary fiber in pet foods, but the natural brown color and hygroscopic properties also show the potential in contributing to physical characteristics.

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  • Mar
    14
    Interpretive Summary: Nitrogen and energy utilization and methane emissions of sheep grazing on annual pasture vs. native pasture


    The reduction of methane (CH4) emissions and nitrogen (N) excretion from livestock production systems can help mitigate environmental impact and improve feeding efficiency. The energy requirements of livestock are crucial for enhancing their performance and minimizing environmental impact.

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  • Mar
    14
    Interpretive Summary: Benchmarking the United States bison meat industry: stakeholder perceptions, production parameters, and live animal factors affecting meat quality


    This project evaluated bison industry stakeholder perceptions on management, animal welfare, and meat quality with in-person and online surveys. Additionally, multiple live animal factors were measured to benchmark their influence on specific meat quality attributes.

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  • Mar
    14
    Interpretive Summary: One-carbon metabolite supplementation to nutrient-restricted beef heifers affects placental vascularity during early pregnancy


    In cow–calf production, periods of poor forage availability or quality can result in nutrient restriction during pregnancy. Previous studies have shown that even moderate maternal feed restriction during pregnancy, including very early in pregnancy, has profound effects on fetal and placental development, potentially having lasting impacts on calf growth and body composition later in life.

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  • Mar
    14
    Interpretive Summary: Effects of dietary Nisin on growth performance, immune function, and gut health of broilers challenged by Clostridium perfringens


    Necrotic enteritis (NE), a severe digestive disorder in broiler chickens caused by Clostridium perfringens (Cp), a gram-positive bacterium, is a widespread issue in the global poultry industry, leading to significant economic losses. Nisin (Ni), a polypeptide bacteriocin produced by probiotic lactic streptococci, has been found to enhance daily weight gain and feed intake, while also exhibiting inhibitory effects on gram-positive bacteria and anti-inflammatory properties.

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  • Mar
    07
    Interpretive Summary: Stress indicators in dairy cows adapting to virtual fencing


    Virtual fences are commercially available but face restrictions in some countries due to animal welfare concerns. For virtual fencing (VF), animals are equipped with collars that emit audio tones (ATs) followed by electric pulses (EPs) when they cross a virtual boundary tracked by global navigation. Existing studies have so far not covered the aspect of longer-term learning, impacting possibly VF suitability.

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  • Mar
    07
    Interpretive Summary: Exploring definitions of daily enteric methane emission phenotypes for genetic evaluations using a population of indoor-fed multi-breed growing cattle with feed intake data


    Livestock production is a significant contributor to greenhouse gas emissions. Animal breeding programs have been proposed as a sustainable mitigation strategy to reduce enteric methane emissions in livestock production.

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  • Mar
    07
    Interpretive Summary: Effects of betaine on growth performance and intestinal health of rabbits fed different digestible energy diets


    Insufficient dietary energy can cause many negative effects on animal production and cause intestinal diseases, which are one of the main causes of morbidity and mortality in rabbits. Results of some experiments demonstrated that betaine has various physiological functions such as improving energy utilization and intestinal health.

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  • Mar
    07
    Interpretive Summary: Effect of water sulfate and dietary bismuth subsalicylate on feed and water intake, ruminal hydrogen sulfide concentration, and trace-mineral status of growing beef heifers


    Water containing a high concentration of sulfate increases the risk of hydrogen sulfide production in the rumen and consequently of polioencephalomalacia. In addition, water with a high-sulfate concentration may induce copper deficiency indicated by depleted liver copper concentration.

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  • Mar
    07
    Interpretive Summary: Late gestational nutrient restriction in primiparous beef females: Performance and metabolic status of lactating dams and pre-weaning calves


    Nutrient requirements increase substantially during late gestation in the beef female; however, poor forage nutrient availability can result in undernutrition. For heifers, the added nutrient requirements needed to continue growing during their first pregnancy and lactation pose an even greater challenge.

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  • Feb
    29
    Interpretive Summary: 2024 Farm Sector Income Forecast is published


    The United States Department of Agriculture’s (USDA) Economic Research Service (ERS) has published the 2024 Farm Sector Income Forecast report. This annual report measures, forecasts, and explains indicators of economic performance for the U.S. farm sector and farm businesses by resource region and commodity specialization.

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  • Feb
    29
    Interpretive Summary: Ag Groups suing California over Clean Air Act


    The United States Chamber of Commerce, American Farm Bureau Federation (AFBF), Western Growers Association, California Chamber of Commerce, Central Valley Business Federation, and Los Angeles County Business Federation have recently filed a lawsuit in the United States District Court for the Central District of California against the state of California regarding the corporate disclosure laws that were signed into law by California Governor Gavin Newsom in October 2023.

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  • Feb
    29
    Interpretive Summary: FAIR Labels Act is introduced


    A new bipartisan bill was introduced to increase transparency and clarify labeling requirements for plant-based and cell-cultured alternative meat products. Several meat industry groups have come out in support of the act.

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  • Feb
    29
    Interpretive Summary: Judge rules in favor of pork producers in Question 3


    A group of pork producers have filed a lawsuit in Massachusetts against the Act to Prevent Cruelty to Farm Animals (Question 3). Passed by voters in November 2016, Question 3 imposes confinement requirements on out-of-state pork producers and prohibits the sale of pork meat within the state from offspring of an animal confined in a manner inconsistent with Massachusetts' requirements, regardless of where in the nation the animal was raised.

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  • Feb
    29
    Interpretive Summary: USDA funds programs to increase food supply chain resiliency


    The United States Department of Agriculture (USDA) has granted over $270 of funding in partnership with state departments of agriculture, to build resilience across the middle of the food supply chain and strengthen local and regional food systems.

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  • Feb
    29
    Interpretive Summary: USDA holds 100th Annual Agriculture Forum


    Earlier this month, the United States Department of Agriculture (USDA) held the 100th Annual Agriculture Forum. The forum is the largest held by the USDA, with over 1,700 in-person attendees and thousands more virtual attendees, comprising farmers and ranchers, food and ag industry representatives, policymakers, government officials, and non-governmental organizations.

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  • Feb
    22
    Interpretive Summary: Genetic evaluation of crossbred Bos indicus cow temperament at parturition


    Cow temperament was evaluated in 1/2 Nellore 1/2 Angus cows from four distinct generations (five herds) from 2005 to 2022. Cows were scored when their calves were processed (1 d age)...

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  • Feb
    22
    Interpretive Summary: Phenylalanine requirements using the direct amino acid oxidation technique, and the effects of dietary phenylalanine on food intake, gastric emptying, and macronutrient metabolism in adult cats


    Two studies were conducted to evaluate 1) the minimum requirement for dietary Phe and 2) the effects of Phe on gastric emptying (GE) and food intake in adult cats. In study 1, the minimum Phe requirement was estimated using the direct amino acid oxidation (DAAO) technique.

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  • Feb
    22
    Interpretive Summary: Effects of a second iron-dextran injection administered to piglets during lactation on differential gene expression in liver and duodenum at weaning


    Iron deficiency anemia (IDA) in neonatal piglets is a problem that occurs unless there is intervention with exogenous iron. The most common method to prevent IDA is with an iron injection within 48 h of birth.

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