Interrelationships among milk production, dam-calf feed efficiency to weaning, and other biological traits were evaluated on 411 first-calf heifers and their calves. Individual feed intakes were measured in a drylot environment for a 1-yr period until weaning of the first calf. Heifer breed types included crossbred Angus-Hereford, Simmental-Hereford, and Tarentaise-Hereford produced in two-bree...

We examined the behavioural ecology of mothers and calves during the first year of life to identify variables predicting calf mortality among bottlenose dolphins. Specifically, we investigated whether the primary cause of calf mortality was poor calf condition or shark predation. Seventy-five per cent of calves that died (NZ 12) showed visible signs of poor health compared with 4.7% of the surv...

Introduction The management of gastrointestinal (GI) problems in livestock and companion animals presents medical and economic challenges. In cattle, neonatal calf diarrhea is recognized worldwide as one of the greatest challenges for both the beef and dairy industries (1, 2). Approximately one-third of U.S. beef cow-calf owners agree that it has an economic impact on their operations (3). Acco...

An experiment was conducted to measure the effects of cobalt supplementation of pregnant heifers grazing pangola grass pastures on lactation and calf growth. Seven pregnant Hereford heifers were used, with three of these receiving a cobalt bullet and grinder four months after insemination. Cobalt supplementation of heifers had no effect on subsequent milk production or composition. However, cal...

birth weight (bw) is the first trait recorded fllowing birth. it can influence the performance of thecow and as well impact the performance of the calf it,s duringits maturity. to investigate the effect ofa calf,s bw on the performance of holstein dairy cattle in iran, the records gathered between 1967 and2010 were obtained from the iranian animal breeding center. the data were then used to mod...

Four patients who developed combined tendon and overlying skin defects following operative repair of ruptured Achilles tendon were presented. Three patients had an infected wound. The average interval from the first operation for repairing the ruptured Achilles tendon and the reconstructive procedure was 46.2 days (range, 5-65 days). All patients were treated with a one-stage operation includin...

The study was conducted to estimate the genetic and phenotypic correlations among body measurements, body weight, kidding interval, kidding rate and milk yield in the different breeds of goat. Data was collected on 95 goats of three breeds (Jamunapari, Black Bengal and their crosses (Jamunapari×Black Bengal) through direct observation. The average body weight of Jamunapari goat was 34.75 ± 3.33...

The effects of non-genetic factors (sex of calf, calf birth weight, age of cow, season of calving) affecting gestation length (GL) and open days period (OP) in the Ngaoundere Gudali cattle of the Adamawa (Cameroon) was investigated. Mean GL was 293.4 ± 0.4 d. Sex of the calf significantly (P< 0.05) affected GL, with male calves being carried in utero approximately 3 days longer than the females...

Performance and economics of calf feeding and feeding long-yearlings was compared from University of Nebraska research conducted from 1996 to 2004. All calves in these studies were spring born and purchased the subsequent fall. The heaviest calves (292 ± 5 kg) were placed into the feedlot and fed an average of 168 d (calf-feds), whereas the lighter calves (239 ± 5 kg) were placed into a long-ye...