Results 121 to 130 of about 29,367 (283)
Evaluation of Level of Milk Potential on Nutrient Balance in 2- and 4- Year- Old May- Calving Range Cows Grazing Sandhills Upland Range [PDF]
, 2020 A modeling study evaluated the effects of milk production level on nutrient balance in May- calving cows grazing Sandhills upland range during the breeding season. Forage quality of upland range peaks in June and steadily declines in July until November.
Adams, Don C., Mulliniks, J. Travis
core +1 more source
Factors Affecting Holstein Cattle Fertility Traits in the Slovak Republic
Scientific Papers Animal Science and Biotechnologies, 2023 We investigated the influence of the factors herd-year, breed-type, sire, and milk production and lactation length on the fertility traits of Holstein cattle (age at first calving, calving interval, days open, non return rate at 56, 72, and 90 day).
Zuzana Riecka +2 more
doaj
Length of Calving Interval and Average Milk Yield
Journal of Dairy Science, 1931 Summary Records published by Langmack (3) are considered with respect to the effect of length of calving interval on the average milk yield per day over the calving interval. The present data are confined to 186 Red Danish cows whose records in each case start with the cow's first calf and continue uninterruptedly through the nine following calvings ...
W.L. Gaines, J.R. Palfrey
openaire +1 more source
Contribution of Fat Adjustment to Residual Feed Intake Estimation in Beef Cattle
Journal of Animal Breeding and Genetics, EarlyView.ABSTRACT Including fat thickness as a covariate in the regression model used to calculate residual feed intake (RFI) could help preserve carcass quality traits, such as marbling, flavour and juiciness, by accounting for variation in fat deposition.
Larissa Bordin Temp +8 more
wiley +1 more source
Journal of Animal Breeding and Genetics, EarlyView.ABSTRACT Recent studies suggest that variations in milk yield during lactation can serve as a metric for assessing individual resilience, with minimum fluctuations reflecting greater resilience in cows. With automatic milking systems, multiple records can be obtained from many cows on a daily basis. Given that animals are continually exposed to a range
M. Agyiri +7 more
wiley +1 more source
A Genome-Wide Association Study for Calving Interval in Holstein Dairy Cows Using Weighted Single-Step Genomic BLUP Approach. [PDF]
Animals (Basel), 2020 Atashi H +6 more
europepmc +1 more source
CALVING INTERVAL IN CROSSBRED ZEBU CATTLE
, 2007 O trabalho apresenta o estudo de 296 dados de intervalos entre partos em gado azebuado do planalto central de Goiás, município de Anápolis. Observou-se que o intervalo médio entre partos foi de 17,37 +/- 0,24 meses.
Galvão, Francisco Eduardo +2 more
openaire +1 more source
Genetic Relationships Between Residual Gain and Economically Important Traits in Nellore Cattle
Journal of Animal Breeding and Genetics, EarlyView.ABSTRACT Sustainable beef production requires identifying animals with superior feed efficiency to reduce environmental impact and production costs. This study aimed to estimate heritability and genetic correlations between residual gain (RG) and growth, reproductive, carcass and feed efficiency traits in Nellore cattle.
Miller Teodoro +7 more
wiley +1 more source
پژوهشهای علوم دامی ایران, 2016 This study was carried out to study the inbreeding coefficient and its effect on reproductive performance of dairy cows (age at first calving, calving interval and open days) in Isfahan province.
S. Gholizadeh +3 more
doaj
IMPACTUL RITMULUI PARTURIȚIEI ASUPRA REPRODUCȚIEI ȘI PRODUCȚIEI DE LAPTE LA VACILE DIN RASA HOLSTEIN
Agricultural ScienceThe impact of the calving process (easy, moderate, difficult, very difficult) on the main reproductive indicators (the duration from calving to first insemination, the service period, the number of inseminations per pregnancy, and the calving interval ...
Vera GRANACI +5 more
doaj +1 more source