Effects of 48-hour calf withdrawal on conception rates of Bos indicus cows and calf weaning weights in extensive production systems |
| |
| Authors: | Rafael José Airone Escriv?o Edward Cottington Webb Alice Pereira de Jesus Teresa Garcês Richard Jackie Grimbeek |
| |
| Institution: | Department of Animal Production, Faculty of Veterinary, Eduardo Mondlane University, Maputo, Mozambique, rafael.escrivao@uem.mz. |
| |
| Abstract: | Sixty multiparous Brahman-type cows were randomly selected in the early postpartum period and equally allocated into a calf removal group (RG) and a non-removal group (NRG). Calves from cows in the RG were removed for 48 h prior to the breeding season and returned afterwards, whereas in the NRG, calves remained with their dams until weaning. Weaning weights were corrected to 205?days. Conception rates (CRs) were 76?% for RG and 55?% for NRG but did not differ (p?>?0.05). CR was correlated with calving to breeding interval and body condition score at the onset of the breeding season. Product-limit survival curves vs breeding to conception interval differed significantly (p?
|
| |
| Keywords: | |
| 本文献已被 PubMed SpringerLink 等数据库收录！ |
