The effect of prepartum feeding and lying space on metabolic health and immune function
| Autor: | Todd F. Duffield, Dorothee Bienzle, Elizabeth L. Scholtz, Stephen J. LeBlanc, Cynthia L. Miltenburg |
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| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Bilirubin Neutrophils medicine.medical_treatment Ice calving Animal Welfare 03 medical and health sciences chemistry.chemical_compound Animal science Phagocytosis Pregnancy Floors and Floorcoverings Genetics medicine Peripartum Period Animals Respiratory Burst Population Density biology Behavior Animal Insulin Reproduction Haptoglobin 0402 animal and dairy science Albumin 04 agricultural and veterinary sciences medicine.disease 040201 dairy & animal science Housing Animal Confidence interval Parity 030104 developmental biology chemistry biology.protein Animal Science and Zoology Electronic data Cattle Female Endometritis Blood Chemical Analysis Food Science |
| Zdroj: | Journal of dairy science. 101(6) |
| ISSN: | 1525-3198 |
| Popis: | The determinants of metabolic and reproductive health disorders in the peripartum period and the degree to which feeding and lying space and management can influence health are only partially understood. The objective of this randomized controlled study was to determine whether providing noncompetitive feeding and lying access in the close-up dry period improves health and immune function. Forty-eight Holstein cows of all parities were randomly assigned to a treatment group of 6 to 10 cows in 1 pen with either 80% cows to stalls and 90 cm of feeding space per cow (understocked) or 120% stocking density and 45 cm of feeding space per cow (overstocked) for 3 wk before expected calving. All cows wore electronic data loggers to monitor daily standing and lying time. Video recordings representing d 7 to 9 after group formation were reviewed, and a competition index (C_Ind) was calculated for each cow by dividing the number of times a cow displaced another as an actor by its total number of actor and reactor displacements. Cows were categorized as high success (C_Ind ≥0.6), moderate success (0.4 ≤ C_Ind |
| Databáze: | OpenAIRE |
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