At birth, calves are functionally monogastric and remain so for the first weeks of life. Milk in the rumen may cause indigestion, diarrhea, and reduced growth. Calves are often fed cold milk from a large-aperture teat, but warm milk and sucking behavior are believed to trigger the esophageal reflex. The aim of this study was to use radiography to estimate the lowest milk temperature that can be given to dairy calves at high and low intake rates without causing milk in the rumen. Our hypothesis was that cold milk drunk at high speed would cause insufficient closure of the esophageal groove and hence milk in the rumen. Fifteen Norwegian Red calves, 9 to 27 d of age, weighing between 45.5 and 71.0 kg, were tested according to the response surface pathway design. Each calf was offered 4 L of milk from both a small- (2 mm) and a large-aperture (19 mm) teat. The milk contained barium sulfate, and radiography was applied before, during, and after the milk meal. Following radiography, the calves were returned to a group pen and observed for 2 h using continuous live behavioral observation to detect signs of abdominal pain or discomfort. Starting with a low number of subjects and increasing this number with increasing design levels reduces the sample size without reducing the statistical power. The minimum milk temperature was estimated to be 8°C. No behavioral signs of pain or discomfort were observed, but shivering was noted in several calves drinking 8°C milk. These results strengthen the argument that calves can be fed large milk meals without risk of causing milk in the rumen, even cold milk drunk at high speed.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.3168/jds.2020-18460 | DOI Listing |
ACS Sens
January 2025
Department of Physics, Umeå University, Umeå SE-901 87, Sweden.
Bacterial spores are highly resilient and capable of surviving extreme conditions, making them a persistent threat in contexts such as disease transmission, food safety, and bioterrorism. Their ability to withstand conventional sterilization methods necessitates rapid and accurate detection techniques to effectively mitigate the risks they present. In this study, we introduce a surface-enhanced Raman spectroscopy (SERS) approach for detecting spores by targeting calcium dipicolinate acid (CaDPA), a biomarker uniquely associated with bacterial spores.
View Article and Find Full Text PDFJMIR Res Protoc
January 2025
School of Human Nutrition, McGill University, Sainte-Anne-de-Bellevue, QC, Canada.
Background: The 2019 Canada's Food Guide provides universal recommendations to individuals aged ≥2 years. However, the extent to which these recommendations are appropriate for older adults is unknown. Although ideal, conducting a large randomized controlled trial is unrealistic in the short term.
View Article and Find Full Text PDFTrop Anim Health Prod
January 2025
School of Molecular Diagnostics, Prophylaxis, and Nanobiotechnology, ICAR- Indian Institute of Agricultural Biotechnology, Garkhtanga, Ranchi, 834003, Jharkhand, India.
Climate change poses significant challenges to livestock production worldwide. Wherein, it affects communities in developing nations primarily dependent on agriculture and animal husbandry. Its direct and indirect deleterious effects on agriculture and animal husbandry includes aberrant changes in weather patterns resulting in disturbed homeorhetic mechanism of livestock vis a vis indirectly affecting nutrient composition of feed and fodder.
View Article and Find Full Text PDFEcol Food Nutr
January 2025
Department of Nutrition and Dietetics, Faculty of Health Sciences, Eastern Mediterranean University, Famagusta, Turkey.
The objective of this study was to investigate the relationship between maternal nutritional knowledge and anthropometric indices in children under 2 years of age. The Infant Nutrition Attitude Scale (IOWA) was administered to all participated mothers. The IOWA was developed to assess women's attitudes toward breastfeeding and their choice of infant feeding method.
View Article and Find Full Text PDFFood Funct
January 2025
College of Food Science and Engineering, Jilin Agricultural University, Changchun, 130118, Jilin, P. R. China.
Correction for 'Neuroprotective effects of fermented yak milk-derived peptide LYLKPR on HO-injured HT-22 cells' by Yunlong Jiang , , 2022, , 12021-12038, https://doi.org/10.1039/D2FO02131E.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!