Results 21 to 30 of about 6,238 (254)

Environmental Factors Affecting Some Productive and reproductive Traits in Egyptian Buffaloes [PDF]

Benha Veterinary Medical Journal, 2017
This study was conducted to evaluate the effect of some environmental factors on milk production in Egyptian buffaloesand the effect of parity and season of calving on calving interval and days open.
Darwish A., Abo-Salem, S., El-Bayomi Kh., Basant ShafiK   +3 more
doaj   +1 more source

Drivers of Recurring Seasonal Cycle of Glacier Calving Styles and Patterns

Frontiers in Earth Science, 2021
Calving is a crucial process for the mass loss of outlet glaciers draining the Greenland ice sheet. Moreover, due to a lack of observations, calving contributes to large uncertainties in current glacier flow models and projections.
Andrea Kneib-Walter, Andrea Kneib-Walter, Martin P. Lüthi, Luc Moreau, Andreas Vieli   +4 more
doaj   +1 more source

The effect of calving season on reproductive performance of Jersey cows

Mljekarstvo, 2017
Dairy records, containing 1269 lactation record of 462 Jersey dairy cows collected over 16 years, from an agricultural state farm were used. Data for reproductive performance of cows were also collected.
Ercan Soydan, Mehmet Kuran
doaj   +1 more source

The effect of retained placenta on the reproductive performance and its economic losses in a Holstein dairy herd [PDF]

Iraqi Journal of Veterinary Sciences, 2022
Retention of placenta (RP) is a failure of the fetal membrane to be expelled and remained from 8 to 48 hours, average 12 hours after parturition. There are a variety of risk factors for the occurrence of RP.
Eman R. Kamel, Hayaa A. Ahmed, Fardos M. Hassan   +2 more
doaj   +1 more source

Effects of the season and number of calving on buffaloes milk production

Italian Journal of Animal Science, 2010
The objective of this study was to evaluate the effects of the season and number of calving on average milk production and persistence of lactation. Fifty hundred and ninety one lactation of buffaloes, milked once a day and bred on pasture conditions ...
P.S. Baruselli, L.M. Toledo, E.M. Nagasaku, N.A.T. Carvalho   +3 more
doaj   +1 more source

Parturition intervals and distributions of parturitions by months of buffalo in Southern and South-eastern Brazil

Italian Journal of Animal Science, 2010
Reproductive rate is an important component of economic success in livestock production. Parturition interval (IEP) is a direct measure of the productivity of the animal. Long IEP reduce the number of calves produced per year.
J.C. De Souza, J.A. DeFreitas, P.B. Ferraz Filho, A.M. Jorge, A.A. Ramos, C.H.M. Malhado, W.R. Lamberson   +6 more
doaj   +1 more source

Analysis of the Stayability in Milk Buffaloes using Survival Models

Italian Journal of Animal Science, 2010
In this study the trait Stayability (SA) was evaluated according to the year of cull after first calvin, i.e., SA 1 to 6 for 1 to 6 years from first calving in lactating females from bubaline milk herds spread in nine farms located in São Paulo ...
H. Tonhati, A.L.F. Lima, R.R.A. Borquis, L.O. Seno, R.C. Sesana, J.A. II de V. Silva, P.M. Galeazzi   +6 more
doaj   +1 more source

Calving probability in the first and second reproductive years of beef heifers that reached the recommended body weight at first breeding season

Revista Brasileira de Zootecnia
The objective was to evaluate factors that influence calving probability in the first and second reproductive years of beef heifers that reached the minimum recommended body weight (BW) in the first breeding season.
Rangel Fernandes Pacheco, João Restle, Ivan Luiz Brondani, Dari Celestino Alves Filho, Jonatas Cattelam, Andrei Retamoso Mayer, Ana Paula Machado Martini, Diego Soares Machado   +7 more
doaj   +1 more source

Seasons of Calving: Age, Management, and Genetic Differences for Milk

Journal of Dairy Science, 1971
Abstract Differences between six seasons of calving (January-February, March-April, etc.), three ages (≤2, 3, ≥4 years), dry lot and pasture management, quartiles of herds on average production, and their interactions were measured by maximum likelihood in 37,247 305-day-2×-mature equivalent records of milk by 15,507 Holstein cows in 198 herds on ...
W W, Wunder, L D, McGilliard
openaire   +2 more sources

Effect of Calving Season and Timing Within Season on Performance and Economics of Cow-Calf Production in Southwest Missouri

Ruminants
A multitude of factors affect the optimum calving season, requiring site-specific systems analysis. The objective of this study was to determine the effects of the calving season (S1 and S2) and the timing of calving within the season on production ...
Briana VerPloeg, Phillip A. Lancaster, Elizabeth Walker   +2 more
doaj   +1 more source