The study was carried out to determine the effect of season calving, stage lactation and parity on 207 cattle compromising Sahiwal (107) Karan Fries (100) different parities stages.In cows, Season had significant all milk composition traits viz., average test day yield (ATDMY), fat (ATDFY), solid not (ATDSNFY), protein percentage (ATDP%) lactose (ATDLY). In non-significant whereas, in ATDMY, AT...

There is limited information on the value of antibiotic therapy for mastitis in beef cows. Effects of antibiotic treatment at weaning and the subsequent calving on calf weaning weight, milk somatic cell counts, milk components, and intramammary infection were studied in beef cows. Additionally, effects of number of infected mammary quarters, number of dry mammary quarters, type of intramammary ...

Abstract Our objectives were to evaluate the impacts of providing vitamin and mineral (VTM) supplements cow-calf pairs during summer grazing period on cow calf performance liver concentrations minerals. During a two-year period, 727 crossbred cows their calves (initial BW = 601.7 ± 48.1 kg; 87.8 5.0 n 381 in year 1, 346 2) from Central Grasslands Research Extension Center (Streeter, N.D.) block...

Estimates of heritabilities and genetic correlations for calving ease over parities were obtained for the Italian Piedmontese population using animal models. Field data were calving records of 50,721 first- and 44,148 second-parity females and 142,869 records of 38,213 cows of second or later parity. Calving ability was scored in five categories and analyzed using either a univariate or a bivar...

The aim of the study was to identify the detailed impact of the season, parity and breed on reproductive performance of sows. The experimental material consisted of 2100 sows, in 3 breed variants: 700 PL, 700 PLW, 700 crossbreeds PL×PLW. Sows were observed until parity 5. In the context of the breed, depending on the order of parity groups of 140 sows were isolated. Then, sows were divided in t...

This study investigated the effects of the herd, cow parity, the insemination protocol and season on the incidence of pregnancy loss (PL) in dairy herds. Furthermore, we determined the downstream effects of PL on reproductive performance and its economic impact. The overall incidence rate of PL was 6.9% in 1,001 pregnant cows and its incidence peaked (p < 0.01) during the second trimester of ge...

Constraints to maximal productivity from twinning in beef cattle include increased incidence of dystocia and retained placenta, longer postpartum interval, and lower conception rate. Incidence and cause(s) of the shorter gestation length and of the increased retained placenta and dystocia associated with twinning were evaluated for 3,370 single and 1,014 twin births produced in a population of ...

Efficient breeding plans depend upon the availability of reliable and accurate data.To evaluate productive reproductive performance Nili-Ravi buffalo, registered under thebull mother scheme, was evaluated from 1980-2020. General Linear Model is used to study effectof phenotypic characters on milk yield i.e., year calving, age at first dam’s parity onproductive traits consideration. The lactatio...