Follow
International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
Index Copernicus ICI Journals Master List 2019 - IJCMAS--ICV 2019: 96.39 For more details click here
National Academy of Agricultural Sciences (NAAS) : NAAS Score: *5.38 (2020) [Effective from January 1, 2020]For more details click here

Login as a Reviewer

Indexed in



National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2019: 96.39
Index Copernicus ICI Journals Master List 2019 - IJCMAS--ICV 2019: 96.39
For more details click here

See Guidelines to Authors
Current Issues

Original Research Articles

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2016.5(4): 287-296
DOI: http://dx.doi.org/10.20546/ijcmas.2016.504.033


Reproductive and Productive Indicators of Holstein-Friesian Cows Grown in Cubical Technology
Georgi Popov*, Zapryanka Shindarska and Iliya Ralchev
University of Forestry – Sofia, Faculty of Veterinary Medicine, Kliment Ohridski Blvd. 10
*Corresponding author
Abstract:

Reproductive and productive performances of Holstein - Friesian cows grown at cubic technology were studied. The study included 70 animals separated and aligned into groups according to number of lactation. The following reproductive parameters are traced: age of fertilization, age of calving, length of periods from calving to first heat and from calving to fertilization, number of inseminations, duration of pregnancy and calving period. From the productive parameters are researched: milk quantity for lactation, duration of lactation and dry period. The aim of the study is to establish productive and reproductive performances in Holstein-Friesian cows, at different lactation placed under the same technological conditions of feeding and breeding. The obtained results shows: extended duration for first, second, third and fourth lactation (respectively 347, 304, 326 and 316 days), increased number of insemination to fertilization (1,79; 1,39; 1,71 and 3,25 for each lactation), increased age of calving (35,5; 45,8; 60,7 and 73,2 months), extended period from calving to first heat (100,1; 81,6; 64,6 and 42,7 days), from calving to fertilization (141,6; 102,3; 126,7 and 125,7 days) and calving period (420,7; 381,4; 405,4 and 401,7 days) for the four lactations respectively.


Keywords: Production, Reproduction, Cows, Lactating Period, Sexual Cycle, Period from Calving to Fertilization.
Download this article as Download

How to cite this article:

Georgi Popov, Zapryanka Shindarska and Iliya Ralchev. 2016. Reproductive and Productive Indicators of Holstein-Friesian Cows Grown in Cubical Technology.Int.J.Curr.Microbiol.App.Sci. 5(4): 287-296. doi: http://dx.doi.org/10.20546/ijcmas.2016.504.033