Results 21 to 30 of about 29,367 (283)

Desempeño reproductivo de vacas Gyr lechero en un sistema a pastoreo del trópico ecuatoriano

La Técnica: Revista de las Agrociencias, 2020
Reproductive performance of Gyr dairy cows in a grazing system of the Ecuadorian Tropic Resumen El objetivo del trabajo fue evaluar la eficiencia reproductiva en vacas lecheras Gyr en condiciones de pastoreo del trópico ecuatoriano.
Alicia Esther Farfán Talledo, Wilter Fernando Borja Veloz, Luis Santiago Quiroz Fernández, Juan José Zambrano Villacís, Pablo Roberto Marini   +4 more
doaj   +1 more source

Reproductive performance parameters in a large population of game-ranched white rhinoceroses (Ceratotherium simum simum) [PDF]

, 2017
The population of free-roaming white rhinoceroses (Ceratotherium simum) is under serious threat. Captive breeding of this species is therefore becoming more important, but this is challenging and often not successful.
Durrant, Barbara, Govaere, Jan, Hostens, Miel, Otto, Michelle, Van Soom, Ann, van Zijll Langhout, Martine, Ververs, Cyrillus   +6 more
core   +3 more sources

The effects of maternal calving date and calving interval on growth performance of beef calves

South African Journal of Animal Science, 2000
This study was undertaken to investigate the growth performance of calves born to dams with different calving dates and calving intervals. Early calving dams produced calves with the lowest birth weights, the highest actual weaning weights and the highest pre-breeding heifer weights.
MacGregor, R.G., Casey, N.H.
openaire   +3 more sources

Genetic analysis of reproductive performance of Frieswal cattle at Military Farm, Ambala [PDF]

Veterinary World, 2015
Aim: This study was carried out to investigate the genetic analysis of reproductive performance of Frieswal cattle at Military Farm, Ambala. Materials and Methods: A total number of 3005 lactation records of 1147 Frieswal cows over a period of 15 years ...
Jagdeep Kumar, Y. P. Singh, Sushil Kumar, Rajbir Singh, Ravinder Kumar , Pradeep Kumar   +5 more
doaj   +1 more source

Genotype × environment interaction for fertility and milk yield traits in Canadian, Mexican and US Holstein cattle

Spanish Journal of Agricultural Research, 2017
The objective of this study was to evaluate genotype × environment  interaction (G×E) between Canada, the United States and Mexico for fertility and milk yield traits using genetic correlations between countries estimated from genetic evaluations of ...
Hugo H. Montaldo, Alejandra Pelcastre-Cruz, Héctor Castillo-Juárez, Felipe J. Ruiz-López, Filippo Miglior   +4 more
doaj   +1 more source

Accuracy of predicting milk yield from alternative milk recording schemes [PDF]

, 2005
peer-reviewedThe effect of reducing the frequency of official milk recording and the number of recorded samples per test-day on the accuracy of predicting daily yield and cumulative 305-day yield was investigated.
Berry, Donagh, Cromie, A. R., Dillon, Pat, Olori, V. E., Rath, Myles V, Veerkamp, Roel F.   +5 more
core   +1 more source

The Influence of Synthetic Analogues of PgF2 on the Evolution of Puerperal Period and the Duration of the Interval from Calving to the First Estrus in Cows

Scientific Papers Animal Science and Biotechnologies, 2023
Puerperal period is the most critical period from the productive life of females, at the borderline between physiologic and pathologic. In this stage some reproductive turbulence may appear (uterine subinvolution, uterine infections, ovary inactivity ...
Nicolae Păcală, Casiana Șipețan, Ioan Bencsik, Dorel Dronca, Ada Cean, Ion Carabă, Marioara Nicula, Marinel Șipețan, Nenad Nedeljkovic, Cosmin Ganță   +9 more
doaj  

Genetic evaluation of reproduction performance of Jersey × Red Sindhi crossbred cows [PDF]

Veterinary World, 2016
Aim: The present investigation was undertaken to study the reproduction performance and effect of non-genetic factors on reproduction performance of Jersey crossbred cows. Materials and Methods: Data on 355 Jersey crossbred cattle maintained at the Post-
S. Vinothraj, A. Subramaniyan, R. Venkataramanan, Cecilia Joseph, S. N. Sivaselvam   +4 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

A participatory approach to design monitoring indicators of production diseases in organic dairy farms [PDF]

, 2016
Production diseases have an important negative effect on the health and welfare of dairy cows. Although organic animal production systems aim for high animal health levels, compliance with European organic farming regulations does not guarantee that this
Bareille, Nathalie, Duval, Julie, Emanuelson, Ulf, Fourichon, Christine, Madouasse, Aurélien, Sjöström, K.   +5 more
core   +2 more sources