The present investigation was undertaken to estimate the effect of non-genetic factors on different production traits Murrah buffaloes maintained at Buffalo Research Centre, Chaudhary Charan Singh Haryana Agricultural University, Hisar, India. A total 1128 lactation records 326 buffalo were targeted explore factors. considered for study yield (LY), length (LL), 305 days milk (305 MY), peak (PY)...

correlation between breeding value of crude milk (cm) and energy-corrected milk (ecm) was studied based on a total of 774,013 test day records belongs to 88,456 first-parity holsteins dairy cattle calving during 1997-2009 in 165 herds (from six provinces). genetic analysis of the traits was carried out by a fixed regression test day model. in the model, effects of herd, calving year, production...

Monthly estimates of 24-h milk yield were obtained on 160 spring-calving and 153 fall-calving crossbred cows containing various proportions (0, 1/4 or 1/2) of Brahman breeding, all bred to Limousin sires. Milk production was measured using weigh-suckle-weigh procedures. Interactions between crossbred group and season of calving were not significant. Across seasons, milk production rarely was af...

a data file containing 607662 (317608) milk (open days) records belonging 294417 (177838) holstein cows that were calved from 1983 to 2008 was used. the bivariate repeatability model was used for data analyzing so that herd, calving year, calving month, days in milk (only for milk trait) and calving age for each parity, were assumed as fixed effects and additive genetics and permanent environme...

The study is intended to determine the calving interval (CI) and Dry period (DP), which are reproductive characteristics of Anatolian buffaloes reared under farm conditions, investigate environmental effects on these characteristics, use results in stud selection programs for breeding buffalo herds. In study, 1427 dry records 756 heads between 2014-2021 were used. this overall mean standard err...

To determine the calving to service interval and its associated factors, 125 crossbred Friesian cows were studied. The farm records randomly examined, related data collected on genotype, age, body weight, condition score (BCS), parity, milk yield, suckling status season of first postpartum service. overall in was 98.9 ± 42.6 days. Calving intervals with 50.0%, 62.5 - 68.8% 75.0 87.5% exotic blo...

The buffalo is considered as sluggish breeder as the reproductive efficiency of buffalo is adversely affected by certain constraints such as late maturity, poor expression of the estrous signs particularly during summer, irregular estrous cycle, silent heat, seasonality in breeding, poor conception rate/early embryonic mortality and prolonged inter-calving interval. Buffalo reproduction in trop...

the objective of this study was to determine cows with subclinical ketosis (sck) with metabolic profile test and subsequent health and productive performances compared to cows without sck. ninety six holstein dry cows were blocked within parity for similar expected calving dates. blood samples were drawn from tail vein 1wk before calving and 1wk after calving. nefa and bhba concentrations were ...