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Impact of dairy cow personality traits on response to extended milking intervals and removal of supplemental concentrate in a free-traffic automated milking system.
J Dairy Sci
January 2025
Department of Animal Biosciences, University of Guelph, Guelph, Ontario, N1G 2W1, Canada. Electronic address:
Provision of supplemental concentrate in an automated milking system (AMS) is commonly used to encourage voluntary attendance, however, the motivation to voluntarily milk is highly variable between cows. The objectives of this study were to determine if dairy cow personality is associated with: 1) their short-term response to changes in factors believed to motivate voluntary AMS visits such as udder pressure and provision of supplemental feed (modulated by longer milking intervals or removal of AMS concentrate, respectively); and 2) their milking activity, production, and feeding behavior after returning to pre-treatment AMS milking interval and concentrate feed settings (i.e.
View Article and Find Full Text PDFAmeliorating Effects of Antibiotic Alternatives on the Performance and Pathological Parameters of Salmonella Typhimurium Infected Broiler Chickens.
Microb Pathog
January 2025
Cytology and Histology Department, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt. Electronic address:
The purpose of this study was to investigate the effects of thyme oil (TO), chitosan nanoparticles (CS-NPs), and TO-loaded-CS-NPs on controlling Salmonella Typhimurium (S. Typhimurium) infection in broiler chickens when compared to ciprofloxacin (Cip) antibiotic treatment. The CS-NPs and TO-loaded-CS-NPs were initially characterized using a transmission electron microscope.
View Article and Find Full Text PDFUsing direct method to estimate calcium digestibility of barley and soybean meal in quail chicks.
Poult Sci
January 2025
Department of Animal Sciences, Faculty of Agriculture, University of Zabol, Sistan 98661-5538, Iran. Electronic address:
The availability of calcium (Ca) in poultry diets is influenced by various factors, such as the feed ingredients used. This study assessed the apparent ileal digestibility (AID) and standardized ileal digestibility (SID) of Ca in barley and soybean meal (SBM) in young quail chicks using a direct method. Three diets were formulated, including a Ca-free basal diet to evaluate ileal endogenous calcium losses (IECaL), and two diets with barley or SBM as the sole Ca sources.
View Article and Find Full Text PDFEffects of replacing soybean meal with cottonseed meal on growth performance, carcass trait, intestinal development and intestinal microbiota of broiler chickens.
Poult Sci
December 2024
New Hope Liuhe Co., Ltd., Quality Control for Feed and Products of Livestock and Poultry Key Laboratory of Sichuan Province, Chengdu, China; Weifang Newhope LiuHe Feed Technology Co. Ltd., Weifang, China. Electronic address:
This experiment was conducted to evaluate the effects of replacing soybean meal (SBM) with cottonseed meal (CSM) on growth performance, carcass trait, intestinal development and intestinal microbiota of broilers. A total of 792 one-day-old male Ross 308 broiler chickens were randomly allotted to three treatment groups, with 8 replicates per group and 33 birds per replicate. The control birds were administered a diet consisting primarily of corn and soybean meal.
View Article and Find Full Text PDFInducers of Autophagy and Cell Death: Focus on Copper Metabolism.
Ecotoxicol Environ Saf
January 2025
State Key Laboratory of Swine and Poultry Breeding Industry, Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, College of Animal Science and Technology, Sichuan Agricultural University, Chendu 611130, PR China. Electronic address:
Copper is an essential trace element in biological systems, playing a key role in various physiological functions, including redox reactions and energy metabolism. However, an imbalance in copper homeostasis can induce oxidative stress, mitochondrial dysfunction, and inhibition of the ubiquitin-proteasome system, ultimately leading to significant cytotoxicity and cell death. According to recent research, copper can bind to lipoylation sites on proteins involved in the tricarboxylic acid cycle, causing aggregation of lipoylated proteins, the loss of Fe-S cluster proteins, proteotoxic stress, and ultimately, cell death.
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