Results 1 to 10 of about 14,782,076 (302)

Impact of Early Lactation Somatic Cell Count in Heifers on Milk Yield Over the First Lactation [PDF]

Journal of Dairy Science, 2005
The objective of this study was to estimate the impact of somatic cell count (SCC) in early lactation (SCCel) [measured between 5 to 14 d in milk (DIM)] of dairy heifers on test-day milk yield (MY) during the first lactation. In total, 117,496 four-weekly test-day records of 14,243 heifers were used.
Sarne De Vliegher, Henrik Stryhn, Herman W. Barkema   +2 more
exaly   +3 more sources

Performance evaluation and prediction of first lactation milk yield in Vrindavani cattle

Indian Journal of Animal Sciences, 2019
The present investigation was carried out using first lactation milk records of 1,084 Vrindavani cows spread over a period of 17 years (2000–2017). The overall performance, effect of non-genetic factors on the first lactation test day (TD) milk yields,
JHARNA CHANDRAKAR, AMIT KUMAR, S NASKAR, G K GAUR, TRIVENI DUTT   +4 more
doaj   +2 more sources

Early-life milk production traits predict lifetime milk yield and support replacement decisions in Holstein, Jersey and Crossbred dairy cows under subtropical conditions [PDF]

Veterinary and Animal Science
Improving lifetime milk yield through the early identification of superior replacement animals is a key objective of sustainable dairy production systems. This study investigated the potential of first-lactation performance indicators to predict lifetime
Onke Tshona, Ziyanda Mpetile, Oluwakamisi Festus Akinmoladun   +2 more
doaj   +2 more sources

Growth Performance, Milk Productivity, Productive Longevity, and Milk Composition of Mugalzhar Horses [PDF]

Animals
The Mugalzhar horse is an important native breed of Kazakhstan, valued for its adaptability, milk production, and meat productivity under extensive pasture-based management.
Maxat Toishimanov, Oralbek Alikhanov, Khamit Aubakirov, Dilaram Karibayeva, Makpal Kargaeva, Zagipa Sapakhova, Dinara Begaliyeva, Rakhim Kanat, Yuliya Tugunova, Dias Daurov, Ainash Daurova, Kabyl Zhambakin, Malika Shamekova, Dastanbek Baimukanov   +13 more
doaj   +2 more sources

Effect of somatic cell count on milk yield and composition of first and second lactation dairy cows

Italian Journal of Animal Science, 2015
This study was carried out to investigate the effect of somatic cell count (SCC) on milk yield and milk composition in first and second lactation Holstein dairy cows.
Mahmut Cinar, Ugur Serbester, Ayhan Ceyhan, Murat Gorgulu   +3 more
doaj   +3 more sources

Dynamics of correlation coefficients of economic and productive characteristics depending on the age of cows [PDF]

E3S Web of Conferences, 2021
In 2002, a new Ural type of black-and-white breed was officially registered. Animals of this type have high productivity indicators, but at the same time there is a decrease in the productive longevity of the breeding stock.
Harlap S.Yu., Gorelik A.S., Bitkeeva M.A., Demina N.A., Mullagulova G.M.   +4 more
doaj   +1 more source

The interrelation of holstein black pied cattle’s productive qualities by lactation [PDF]

BIO Web of Conferences, 2022
Holsteinized Russian black pied cattle of the Ural type are bred in the Sverdlovsk region, which is represented by large highly productive animals with a high genetic potential of productivity.
Gorelik O.V., Lihodeevskaya О.Е., Zezin N.N., Sevostyanov M.Yu., Leshonok О.I.   +4 more
doaj   +1 more source

Linking first lactation survival to milk yield and components and lactation persistency in Tunisian Holstein cows [PDF]

Archives Animal Breeding, 2019
Abstract. Genetic parameters were estimated for first lactation survival defined as a binary trait (alive or dead to second calving) and the curve shape traits of milk yield, fat and protein percentages using information from 25 981 primiparous Tunisian Holsteins. For each trait, shape curves (i.e.
M. Grayaa, M. Grayaa, S. Vanderick, B. Rekik, A. Ben Gara, C. Hanzen, S. Grayaa, R. Reis Mota, H. Hammami, N. Gengler   +9 more
openaire   +5 more sources

Productive and reproductive performance of Siri cattle under field condition in West Bengal

Indian Journal of Animal Sciences, 2021
A study was undertaken with an objective to assess productive and reproductive performance of Siri cattle in West Bengal. The study was conducted among 80 farmers rearing either Siri-Pure or Siri-Graded cattle in the hilly region.
RAKESH ROY, RUPASI TIWARI, TRIVENI DUTT
doaj   +1 more source

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

Annals of Animal Science, 2019
Abstract 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. The study used SYMLEK data on the milk yield and culling of 111 857 Polish Holstein-Friesian cows from the active population in Pomerania and Kujawy, Poland ...
Anna Sawa, Kamil Siatka, Sylwia Krężel-Czopek   +2 more
openaire   +1 more source