Results 51 to 60 of about 46,786 (294)

Age at first calving in dairy cows: which months do you aim for to maximise productivity?

, 2020
PICO question In dairy cattle, which months should producers target age at first calving in order to maximise milk yield, minimize risk of non-voluntary culling and optimize fertility?
M. Steele
semanticscholar   +1 more source

GENETIC ANALYSIS OF REPRODUCTIVE TRAITS IN BALI CATTLE MAINTAINED ON RANGE UNDER ARTIFICIALLY AND NATURALLY BRED

Journal of the Indonesian Tropical Animal Agriculture, 2014
The aim of this study was to evaluate genetic analysis including heritability and further phenotypicand genetic trends of reproductive traits in Bali cattle.
A. Gunawan, R. Sari, Y. Parwoto
doaj   +1 more source

Effect of Age at First Calving on First Lactation Milk Yield, Lifetime Milk Production And Longevity of Cows

Annals of Animal Science, 2019
The objective of the study was to analyse the effect of age at first calving (AFC) on first lactation milk yield, lifetime milk production and longevity of dairy cows.
A. Sawa, K. Siatka, S. Krężel-Czopek
semanticscholar   +1 more source

Associations between age at first calving, rearing average daily weight gain, herd milk yield and dairy herd production, reproduction, and profitability.

Journal of Dairy Science, 2014
L. Krpalkova, V. E. Cabrera, J. Kvapilík, J. Burdych, P. Crump   +4 more
semanticscholar   +3 more sources

EFFECT OF AGE AT FIRST CALVING AND FIRST LACTATION MILK YIELD ON PRODUCTIVE LIFE TRAITS OF SYRIAN SHAMI COWS

, 2020
The objective of this research was to study the effect of age at first calving (AFC) and first lactation milk yield (FMY) on productive life traits of Syrian Shami cows.
O. Almasri, S. Abou-Bakr, M. A. M. Ibrahim   +2 more
semanticscholar   +1 more source

Validation of national genetic evaluations for maternal beef cattle traits using Irish field data [PDF]

, 2014
peer-reviewedGenetic evaluations provide information to aid in breeding decisions that increase long-term performance of animals and herds. However, to date no study has been undertaken to investigate the accuracy of the Irish maternal genetic ...
Berry, Donagh, Cromie, A. R., Evans, R. D., McHugh, Noirin   +3 more
core   +1 more source

NON GENETIC FACTORS EFFECT ON REPRODUCTIVE PERFORMANCE AND PREWEANING MORTALITY FROM ARTIFICIALLY AND NATURALLY BRED IN BALI CATTLE

Journal of the Indonesian Tropical Animal Agriculture, 2014
The aim of this study was to evaluate effect of non genetic factors on reproductive performance ofBali cattle. Data on reproduction performance were collected from Breeding Centre of Bali Cattle inDenpasar-Bali.
A. Gunawan, R. Sari, Y. Parwoto, M.J. Uddin   +3 more
doaj   +1 more source

Evaluation of HF crossbred bulls under field progeny testing programme at different agro-climatic regions in India

Indian Journal of Animal Sciences, 2020
Adequate numbers of progeny tested bulls are not available in India and whatever small number of bulls are progeny tested, they have low repeatability as the progeny tests are based on small number of daughters mostly reared at the institutional farms ...
A K DAS, RANI ALEX, RAVINDER KUMAR, N V PATIL, UMESH SINGH, SUSHIL KUMAR, S K RATHEE, S TYAGI, K ANIL KUMAR, R L BHAGAT, P P DUBEY   +10 more
doaj   +1 more source

Association between age at first calving and milk production in first lactation on longevity traits in Holstein cows [PDF]

Biotechnology in Animal Husbandry, 2020
The objective of this research was to determine the association between age at first calving (AFC) and milk production in the first lactation of longevity traits for Holstein cows. The research was conducted on 2307 cows raised on 4 farms in AP Vojvodina.
Kučević Denis, Trivunović Snežana, Šoronja Žika, Janković Dobrila, Stanojević Dragan, Đedović Radica, Papović Tamara   +6 more
doaj  

Factors Affecting Age at First Calving in Kankrej Cattle

Journal of Animal Research, 2016
The data of 35 years from 1980 to 2014 were analyzed to study the effect of genetic and non-genetic factors viz. period of calving, season of calving as fixed effect and sire as random effect on the reproduction trait (age at first calving) of Kankrej cattle maintained at Livestock Research Station, S.D.
N.K. Pareek, K.J. Ankuya, M.P. Patel, N.A. Joshi, B.S. Rathod, K.B. Prajapati, J.B. Patel   +6 more
openaire   +1 more source