Results 51 to 60 of about 6,252 (157)

Estimation the Genetic Parameters for Age at the First Calving and Calving Interval in Romanian Spotted, Simmental

Scientific Papers Animal Science and Biotechnologies
The objective of this study was to estimate the genetic parameters for reproductive traits in Romanian Spotted, Simmental type cattle breed using animal model.
Mircea Cătălin Rotar, Rodica Ștefania Pelmus, Mihail Alexandru Gras, Cristina Van   +3 more
doaj  

Análise genética de características ponderais e reprodutivas de fêmeas bovinas Tabapuã Genetics analysis of growth and reproduction traits in a herd of Tabapuã females

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2005
Foram estudadas 1251 informações referentes aos pesos às idades-padrão de 205 (P205), 365 (P365) e 550 (P550) dias e idade ao primeiro parto (IPP) e primeiro intervalo de partos (IEP1) de fêmeas bovinas da raça Tabapuã.
J.C.C. Pereira, S.H.A. Ribeiro, M.A. Silva, J.A.G. Bergmann, M.D. Costa   +4 more
doaj   +1 more source

EFFECTS OF DIET SUPPLEMENTATION WITH ANIONIC SALTS ON BREEDING PERFORMANCE OF DAIRY COW

Agricultura, 2018
This research proves the effects of Calving Care on reproductive performance in dairy cow, during three successive lactations, on a group of 10 Holstein Friesian cows, using the method of period research.
Marius Bogdan, Mihai I Bențea, Aurel Șara   +2 more
doaj   +1 more source

Factors Affecting Calving Interval in Dairy Herds

Journal of Dairy Science, 1976
Abstract A total of 696 calving intervals on 370 cows from four breeds in the Oklahoma State University dairy herd was used to study breeding efficiency and various factors affecting calving interval within breed. Fertility of bulls differed within breeds.
H. Slama, M.E. Wells, G.D. Adams, R.D. Morrison   +3 more
openaire   +1 more source

Twin Elephant Calves and Interval Between Births of Successive Elephant Calves

, 1962
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +2 more sources

Fecundity of the Lagune Cow in Benin. Age at first calving and Calving Intervals

Revue d’Elevage et de Médecine Vétérinaire des Pays Tropicaux, 2005
Data collected from 1987 to 2003 at the Samiondji farm in Benin were used to study the age at first calving (n = 200) and calving intervals (n = 805) in the Lagune cow. The age at first calving was 1373 ± 180 days (4 ± 0.5 years) and calving intervals were 426 ± 85 days (14 ± 2.8 months).
T.I. Alkoiret, A.B. Gbangboche
openaire   +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, Pato, José Magno, Marcelino Sobrinho, José   +2 more
openaire   +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, Salavati M, De Koster J, Crowe MA, Opsomer G, Hostens M, The GplusE Consortium.   +6 more
europepmc   +1 more source

Estimate of Inbreeding Coefficient and Its Effects on Reproductive Traits of Dairy Herds in Isfahan Province

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, S. Ansari-Mahyari, A. Riasi, M. Rokouei   +3 more
doaj  

IMPACTUL RITMULUI PARTURIȚIEI ASUPRA REPRODUCȚIEI ȘI PRODUCȚIEI DE LAPTE LA VACILE DIN RASA HOLSTEIN

Agricultural Science
The 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, Oleg MAȘNER, Mariana CARAMAN, Alecsandra CONSTANDOGLO, Anastasia LUNGU-BUCȘAN, Elena CEBAN   +5 more
doaj   +1 more source