A5008870058- Reproductive Physiology in Livestock
- Genetic and phenotypic traits in livestock
- Ruminant Nutrition and Digestive Physiology
- Effects of Environmental Stressors on Livestock
- Animal Nutrition and Physiology
- Regulation of Appetite and Obesity
- Reproductive System and Pregnancy
- Animal health and immunology
- Livestock Management and Performance Improvement
- Aquaculture Nutrition and Growth
- Meat and Animal Product Quality
- Birth, Development, and Health
Swedish University of Agricultural Sciences
2021-2024
Most dairy cows experience negative energy balance (NEB) in early lactation because demand for milk synthesis is not met by intake. Excessive NEB may lead to metabolic disorders and impaired fertility. To optimize herd management, it useful detect lactation, but direct calculation of feasible commercial herds. Alternative methods rely on fat-to-protein ratio or concentrations non-esterified fatty acids (NEFA) β-hydroxybutyrate (BHB) blood. Here, we considered assess (EB) based the acid (FA)...
Extending the voluntary waiting period (VWP) for primiparous cows can have a positive impact on fertility without negative milk production per day in calving interval (CInt). We investigated effect of extended VWP during first lactation yield (MY) 2 consecutive lactations cows. The study involved 16 commercial herds southern Sweden. A total 533 Holstein and Red dairy cattle (Swedish Red, Danish Ayrshire) were randomly assigned to conventional 25 95 d (n = 252) or 145 215 281). Data calvings,...
When the voluntary waiting period (VWP), defined as days between calving and when cow is eligible to receive first insemination, extended, high-yielding dairy cows may have better opportunities regain energy balance before insemination. This study investigated effect of an extended (145-215 in milk [DIM], n = 280) or conventional (25-95 DIM, 251) VWP treatment on fertility, disease incidence, culling rate during their lactation. The were also followed through a second lactation without...
To determine differences in chemical composition between colostrum and mature milk mink, samples were collected from 12 dams as close to the end of parturition possible (n = 12), at 24 h 3), 48 3) 1 week 12) postpartum. The analysed for dry matter (DM), ash, crude protein, fat, carbohydrate, amino acid composition. DM content was higher (p < 0.05) sampled than Also, protein decreased after first However, carbohydrate ash contents did not change > during lactation. proportion essential acids...
Customized voluntary waiting period (VWP) before first insemination was tested in 18 commercial dairy herds Sweden, to assess milk production, fertility and health primiparous cows expected be suited for extended VWP. Cow selection VWP based on 3 criteria early lactation: 1) the 10% of with highest genomic persistency index, 2) a difficult calving or disease during month lactation, 3) higher yield d 4–33 after than herd average cows. Cows meeting at least one these were randomly assigned...
We aimed to study the variation in milk leptin around time of parturition dairy goats, and whether can be absorbed play a role systemic regulation neonate.The results indicate that colostrogenesis goats does not involve accumulation colostrum, but secretion into increases peaks within fi rst 2 days lactation.This is likely result local mammary gland relation lactogenesis.Our did suggest may neonatal goat.