Decisive heifer management for improved lactation and reduced dystocia requires a systematic analysis of age, body weight (BW), and average daily gain (ADG) using an adequately large sample size. The objective of this study was to determine effects of BW and age at first breeding and ADG until pregnancy on yields of milk, milk fat, and milk protein in the first lactation and the occurrence of d...

<p class="MDPI17abstract"><strong>Objective: </strong>This study aimed to determine the percentage of reproductive disorders in dairy cows at The Northern Bandung Dairy Farmer Cooperative (KPSBU Lembang) based on body condition score (BCS) and season factor determined distribution map.</p><p class="MDPI17abstract"><strong>Methods: </strong>The object th...

OBJECTIVE To investigate whether assisted conception is associated with an increased risk of admission to a residential early parenting program for treatment of maternal mood disorder or infant feeding or sleeping disorders in the postpartum year. DESIGN Systematic audit of consecutive medical records. SETTING Masada Private Hospital Mother Baby Unit (MPHMBU), Melbourne, Australia. PATIEN...

There is no prospective study from Iran to estimate the direct risk of Neospora caninum for pregnancy loss or reproductive factors. In addition, there is no report in the literature concerning the association of N. caninum with dystocia and sex of calves. Therefore, this study was conducted on a group of dairy cows in a large intensive production system during 2011 to 2013 in ...

Risk of culling consequent to the main health disorders occurring in the current production systems are reviewed. Survival analysis models including health disorders as time-dependent variables are deemed to be the most appropriate to assess their effects because they allow a better description of the exact follow-up of disease history. Farmers preferentially consider health events in the curre...

Reproductive health intentions Age at first pregnancy (years) Interval between marriage and the first pregnancy (months) Family spacing between 2 living children (months) Number of living children Conception by age of 18 or less (%) Conception by age of 40-49 years (%) Pregnancy rates (%) Population growth rate per year Total fertility rate (%) Cesarean section rate (%) Antenatal injection of t...

Although the number of dairy farms is decreasing, that of large farms is increasing in Japan. Milk production in Japanese dairy cows has increased from 62 kg/year to 88 kg/year over the last 2 decades. However, Japanese dairy cows are experiencing a sustained decline in reproductive performance, calving intervals, and days open; further, the number of inseminations required for conception have ...

Use of sexed semen for artificial insemination of US Holstein heifers (1.3 million breedings) and cows (10.8 million breedings) in Dairy Herd Improvement herds was characterized by breeding year, parity, service number, region, herd size, and herd milk yield. Sexed semen was used for 1.4, 9.5, and 17.8% of all reported breedings for 2006, 2007, and 2008, respectively, for heifers, and for 0.1, ...