The influence of the age of dairy cows first calving on their productive longevity
Journal Title: «Таврійський науковий вісник» - Year 2018, Vol 99, Issue
Abstract
The article presents the influence of the age of dairy breeds first calving on indicators of their lifelong usage. It was established that for elongation of duration of productive usage of Holstein and Ukrainian Blackand Redand White breeds their first calving should be planned at the age of 27,1-29,0 months, and to increase their lifelong productivity – at the age of 25,1-27,0 months. Early (up to 25 months) and late (over 33 months) calvings leads to a shorter lifelong usage and decrease of lifetime productivity. The influence of the age of the first calving on the indicators of duration of lifelong usage was 7,5-9,2, and on productivity lifetime indicators – 4,4-7,0%.
Authors and Affiliations
Н. П. Бабік, Є. І. Федорович
Keywords
Related Articles
- EP ID EP590077
- DOI -
- Views 49
- Downloads 0
Yield of peas under short-term crop rotation depending on the intensity of natural moistening of podzolized chernozem
The results of the research on the yield of peas in short-term crop rotations after various predecessors during a long period of time are given in order to establish certain relationships between the weather and the crop...
Summary of the possibilities for improving the efficiency of implementing measures for saline lands desalination
This article highlights the general information about the degree and types of salinization of the Kura-Araks lowland of the Azerbaijan Republic. Some issues on the improvement of the ameliorative condition of the irrigat...
Formation of photosynthetic productivity of winter wheat under the action of Derby and Biolan.
The results of studies on the study of the effect of different rates of herbicide Derby introduced separately and in conjunction with the plant growth regulator Biolan on the photosynthetic productivity of winter wheat a...
Growth indexes of young pigs of red white-banded breed
In the article studied dynamics of live mass, as well as growth indexes of young pigs of red white-banded breed. The results of research in conditions of breeding farm for red white-banded pig breeds have shown expedienc...
Ecological substantiation of monitoring and population control of turnip moth Agrotis segetum Schiff. in modern agrocenoses of the forest-steppe of Ukraine
The article analyzes the current population dynamics of the turnip moth Agrotis segetum Schiff. in the forest-steppe of Ukraine, taking into account the effect of abiotic factors. The influence of the hydrothermal coeffi...