FACTORS AFFECTING ON AGE AT FIRST CALVING IN CROSSBRED CATTLE MAINTAINED AT LES QADIRABAD DISTRICT SAHIWAL

The data on age at first calving for 539 records of crossbred cows of different filial/genetic groups were considered for the present investigation. These crossbreds belonged to eight filial/genetic groups (F1, F2, F3, F4, F5, F6, F7 and F8) maintained at Livestock Experiment Station Qadirabad Distr...

Full description

Saved in:
Bibliographic Details
Published in:Pakistan journal of science 2022-09, Vol.74 (3), p.132
Main Authors: Ahmad, M, Tahir, M N, Ahmad, F, Shah, S S, Jahanzeb, M, Akhtar, M, Mirza, R H, Ikram, M
Format: Article
Language:English
Subjects:
Age
Animal husbandry
Cattle
Climatic conditions
Dairy industry
Livestock
Livestock industry
Milk production
Performance evaluation
Seasons
Summer
Variance analysis
Winter
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The data on age at first calving for 539 records of crossbred cows of different filial/genetic groups were considered for the present investigation. These crossbreds belonged to eight filial/genetic groups (F1, F2, F3, F4, F5, F6, F7 and F8) maintained at Livestock Experiment Station Qadirabad District Sahiwal from 1991 to 2014 (24 years). The duration of 24 year was divided into 6 periods (P1, P2, P3, P4, P5 and P6) of four years each. Each year was further divided into three seasons as winter (November-February), summer (March-June) and spring (July-October) on the basis of geo-climatic conditions prevailing in the region. The overall population mean of age at first calving was determined 1261.88±9.934 days. The analysis of variance revealed significant effect of period of calving on age at first calving. The finding of this study shows that age at first calving was subjected to non-genetic factor. Effect of season of calving on age at first calving was non-significant which indicate breed characteristic to adaptation with environment. Meanwhile effect of filial/genetic group was significant on age at first calving. Therefore, from the result of this investigation it can be determined that improving the feeding, health and other husbandry practices are essential to enhance the performance trait of this herd.
ISSN:0030-9877
2411-0930