Animal, 2019 The transition period is the most critical period in the lactation cycle of dairy cows. Extended lactations reduce the frequency of transition periods, the number of calves and the related labour for farmers.
A. Kok +6 more
doaj +1 more source
PRODUCTIVE AND REPRODUCTIVE PERFORMANCE OF FRIESIAN CATTLE UNDER ASSIUT ENVIRONMENTAL CONDITIONS [PDF]
Assiut Veterinary Medical Journal, 2018 Environmental factors such as animal origin, parity, year of calving and season of calving affect productivity. This work focused on the study of the effect of these factors on milk yield and reproductive traits of Friesian cows raised under Upper Egypt ...
HASSAN A.H +3 more
doaj +1 more source
Genetic parameters and trends for lactation length in the first three lactations of Holstein cows [PDF]
Archives Animal Breeding, 2012 Abstract. Calving records from the Animal Breeding Center of Iran collected from January 1986 to December 2007 and comprising 492424 calving events of Holsteins from 1413 dairy herds were analysed using linear animal models to estimate genetic parameters for lactation lengths in the first three lactations of Holstein cows.
openaire +2 more sources
SOME FACTORS AFFECTING MILK YIELD AND LACTATION LENGTH IN NILI RAVI BUFFALOES [PDF]
Pakistan Veterinary Journal, 2007 Effects of parity, lactation length, calving season, calf sex and service period on milk yield for 426 records in 134 Nili Ravi buffaloes maintained at the National Agricultural Research Center, Islamabad Pakistan during 1988-2004 were evaluted.
M. AFZAL, M. ANWAR AND M. A. MIRZA
doaj
Genetic profile of total body energy content of Holstein cows in the first three lactations [PDF]
, 2005 Weekly total body energy content (TBEC) was calculated for 444 Holstein cows in their first 3 lactations. These calculations were based on body lipid and protein changes predicted from weekly changes in body condition score and live weight of each cow ...
Banos, G +3 more
core +1 more source
STUDY REGARDING THE INFLUENCE OF PARITY ON MILK PRODUCTION TRAITS IN ROMANIAN BLACK AND WHITE COWS
Scientific Papers Animal Science and Biotechnologies, 2023 The aim of this paper was to establish the way parity had an influence on the milk production and lactation length in Romanian Black and White cows from the Didactical Farm Timişoara.
SIMONA BAUL +6 more
doaj
Genetic studies on performance traits of Jersey crossbred cows in sub-temperate region
Indian Journal of Animal Sciences, 2014 The evaluation of production performance traits of Jersey crossbred cows is essential for their genetic improvement in sub-temperate region. The present investigation was conducted on 619 records of 265 Jersey crossbred cows maintained at an organized ...
R K TAGGAR +3 more
doaj +1 more source
Lactation length, lactation milk yield and dry off period of exotic and local crossed cows in Cameroon [PDF]
, 2022 Data on of 403 genetic crossed cows obtained from the database of the Bambui Centre of the Institute of Agricultural Research for Development (IRAD) in the Sudano-guinean altitude zone of West of Cameroon were used to evaluate effect of parity and season
NIBA, Aziwo +11 more
core +1 more source
Estimates of correction factors for lactation length and genetic parameters for milk yield in buffaloes [PDF]
Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2004 Correction factors for milk yield at 90, 240, 270 and 305 days of lactation of buffaloes and genetic and environmental parameters for milk yield of these lactation periods were estimated.
H. Tonhati +5 more
doaj +1 more source
Addressable self‐immobilization of lactate dehydrogenase across multiple length scales
Biotechnology Journal, 2013 AbstractSuccessful nanobiotechnology implementation largely depends on control over the interfaces between inorganic materials and biological molecules. Controlling the orientations of biomolecules and their spatial arrangements on the surface may transform many technologies including sensors, to energy.
Cetinel, Sibel +7 more
openaire +4 more sources