Holstein cow milk–derived Lactobacillus plantarum L19 alleviates heat stress–induced liver injury in mice by modulating gut microbiota. By Wang et al., page 17. This study is the first to demonstrate that Lactiplantibacillus plantarum L19, a lactic acid bacterium isolated from Holstein cow milk, effectively alleviates heat stress–induced liver injury in mice. It broadens the application of cow milk–derived lactic acid bacteria, offers new strategies for managing heat-induced liver injury in humans and animals, and provides a scientific basis for using lactic acid bacteria in related disease prevention.

This article contained an incorrect technical explanation for the discrepancy observed between 2 statistical models (ICMSF and JERMA), in which the authors initially attributed the difference to how the models account for lot size.

In this article, metabolic heat production (MHP) was incorrectly calculated on a mass basis (g/d) rather than on a volume basis (L/d). The authors have recalculated all affected values, and the updated values appear in boldface in the article text and Table 2 below. The correct versions of Figure 7 and Figure 8 also appear below.

The editor in chief elected to retract this article (Ayivi et al., 2022a) because it duplicates significant parts of a paper that had already appeared in the Journal of Dairy Research (Ayivi et al., 2022b).

I am incredibly honored to be the new Editor in Chief of the Journal of Dairy Science, and would like to thank Paul Kononoff for his leadership of the journal over the past 6 yr. He has truly led the journal during a time in which science and publishing have been accelerating in new ways, requiring foresight and rapid adaptation to new challenges, and leaving the journal in the best place it has ever been. I have been working with Paul over the past few months to ensure a smooth transition, with the hope of continuing the momentum, growth, and success of our journal.

The list of standard abbreviations for JDS is available at adsa.org/jds-abbreviations-24. Nonstandard abbreviations are available in the Notes.

The milk fatty acid (FA) profile is influenced by complex interactions among animal species, physiology, feeding, and management, resulting in modification to the nutritional and functional properties of milk fat. This study aimed to identify latent biological and nutritional factors influencing milk FA composition in ruminants using multivariate factor analysis (MFA), applied across 4 species: dairy cows (Holstein-Friesian and Brown Swiss), sheep (Sarda and Massese), Mediterranean buffaloes, and goats (Saanen).

Sodium butyrate (SB) is a common feed additive used in calf nutrition to support early growth and gastrointestinal health; however, its long-term programming effects remain poorly characterized. This study examined the dose-dependent effects of preweaning SB supplementation in milk on long-term growth, metabolic profiles, and gastrointestinal microbiota in dairy cattle. Eighty Holstein calves were assigned to one of 4 treatments beginning at 2 to 4 d of age: milk supplemented with 0 (CON), 4.4 (LSB), 8.8 (MSB), or 17.6 (HSB) g/d of SB.

Condensed skim milk was high-pressure jet processed at 100 and 500 MPa and spray dried to produce skim milk powder (SMP). The objective of this study was to improve both the instant and reconstituted physicochemical properties of high-pressure jet spray-dried SMP by introducing an agglomeration step during powder processing. Scanning electron microscopy images verified that effective agglomeration was achieved. Agglomeration with lecithin to SMP processed at 500 MPa improved the wettability time (>60 min to 4 min), sinkability (<1 mg/min.cm2 to 73 mg/min.cm2), and dispersibility (34% to 58%) but not solubility, which remained at 77% (wt/vol).

Genetic evaluations are the cornerstone of modern dairy breeding programs, facilitating selection for traits of economic and environmental importance. The utility of any genetic evaluation is dependent on its ability to predict phenotypic performance in an independent population. This is of particular importance for traits that are not routinely measured on commercial farms, such as feed intake and efficiency. The objective of the present study was to characterize the performance of grazing dairy cows stratified on their EBV for energy intake.

This study evaluated the effects of feeding a probiotic-postbiotic blend on DMI, milk and milk component yields, systemic inflammation, and regional paracellular permeability of the gastrointestinal tract (GIT) before and following an intramammary (IMM) LPS challenge. Lactating Holstein cows (n = 34 at 57 ± 4 DIM) with a SCC <250,000 cells/mL were used, including 14 that were ruminally cannulated. Cows were fed either 28 g/d of a probiotic-postbiotic blend (PB; Dairyman's Edge PRO, Papillon Agricultural Company) or no PB (NP) for 21 d before obtaining 5 d of baseline measurements.

Balancing for limiting AA may prevent reduced production when deficient MP is provided. The objective of the study was to determine the effects of rumen-protected (RP) His supplementation at different levels of MP when Lys and Met supplies meet the requirements. Sixty lactating cows (mean ± SD; parity, 2.47 ± 1.346; DIM, 112 ± 27; milk yield, 50 ± 8 kg/d) were used in a randomized complete block design and allocated to one of the following diets: an MP-adequate diet that meets the MP, Met, Lys, and His requirements (CP, 17.0%) has been reported; an MP-moderately deficient diet (92.6% of the requirement) meeting the requirement of Met and Lys (MDMP; CP, 15.4%); the MDMP diet supplemented with RP-His to meet the His requirement; an MP-deficient diet (86.7% of requirement) meeting the requirement of Met and Lys (DMP; CP, 14.5%); the DMP diet supplemented with RP-His to meet the requirement of His.

This study developed and validated a robust liquid chromatography-tandem mass spectrometry method for the simultaneous determination of 12 major mycotoxins in camel milk samples from the United Arab Emirates (UAE). Among the evaluated extraction procedures, the modified quick, easy, cheap, effective, rugged, and safe (QuEChERS) method demonstrated the best performance, achieving recoveries of 76%–120%, as well as excellent linearity (R2 > 0.9994) and precision within relative SD of <20%, confirming its suitability for routine analysis.

Supplementation with docosahexaenoic acid (DHA) from microalgae is considered a promising strategy to enhance the n-3 content of bovine milk. However, DHA transfer efficiency into milk is typically low and highly variable. This study evaluated the effects of 2 Schizochytrium-derived DHA powder products on milk performance, DHA enrichment, milk fatty acid (FA) profile, and rumen microbiota composition in lactating Holstein dairy cows. Forty-five Holstein cows were randomly assigned into 3 treatments (n = 15 each), a control without any supplementation (CON), and 2 treatments receiving different Schizochytrium sp.

As highly pathogenic avian influenza (HPAI) spreads in US dairy herds, substantial uncertainty remains regarding modes of transmission and net impacts on cattle health and productivity. The objectives of our study were to identify factors associated with risk of clinical HPAI diagnosis (cHPAI) among lactating cows and quantify subsequent productivity and health outcomes of cHPAI versus nonclinical (NC) cows. We used herd management data from a dairy farm in Michigan (44.8 ± 10.4 kg/d ECM, 1.58 ± 0.04 SCS before outbreak; mean ± SD) that experienced an HPAI outbreak in May 2024.

Canola meal (CM) contains glucosinolates, which are metabolites known to inhibit the transfer of I from feed to milk. Therefore, we aimed to compare the effects of diets containing soybean meal (SBM) or CM, each supplemented with ethylenediamine dihydroiodide (EDDI) and the I-rich brown seaweed Ascophyllum nodosum (ASCO), on I metabolism, production performance, and nutrient utilization in dairy cows. Sixteen multiparous Jersey cows averaging (mean ± SD) 138 ± 58 DIM and 456 ± 62.1 kg of BW at the beginning of the study were used in a replicated 4 × 4 Latin square design with a 2 × 2 factorial arrangement of treatments.

The current study investigated the interacting mechanism within lactoferrin (LF)-low methoxyl pectin (LMP) and LF-high methoxyl pectin (HMP) complexes, alongside heat-induced alterations in their physicochemical, structural, and functional properties. At pH 7, LF can form soluble complexes with pectin at mass ratios of 3:1 and 1:1. Molecular docking and Fourier transform infrared spectra revealed that LMP primarily bound LF via electrostatic interactions and hydrogen bonds, whereas HMP predominantly engaged in hydrophobic interactions.

Limited knowledge exists on the role of variation in individual colostrum components on metabolic and endocrine adaptation in calves. The objective of this study was to investigate the effects of individual colostral macronutrients and non-nutrient factors on metabolic and endocrine blood parameters of neonatal calves. Forty-six Holstein calves were fed with colostrum from their own dams at 4 and 12 h postpartum (p.p.). Blood samples were taken before feeding at 4, 12, and 24 h of age. Individual colostrum samples were analyzed for fat, protein, and lactose.