The Effects of Some Environmental Factors Affecting on the Weaning Weight of Sistani Beef Calves

The present study was conducted to determine some environmental factors affecting birth weight, weaning weight and daily live weight gain of Holstein calves of a livestock facility in Izmir, Turkey. The data on 2091 calves born between the years 2005-2010 were used to assess the relevant parameters. Effects of calving year, calving month, calf gender and the interaction between calving year and calving month on calves’ birth weights were highly significant. The overall mean of birth weights was 39.6±0.15 kg. In addition, effects of calving year, calving month, gender, birth weight, weaning age, calving year x calving month, calving year x gender and calving year x calving month x gender interactions on weaning weight (WW) and daily live weight gain (DLWG) were highly significant. The overall means of WW and DLWG were respectively found to be 79.7±0.20 kg and 525±2.5 g. A one kilogram increase in birth weight resulted in an increase of 0.89 kg in weaning weight and a decrease of 1.26 g in daily live weight gain. Prenatal temperature-humidity index (THI) affected birth weight of calves (R2=0.67). Increasing THI from 50 to 80 resulted in 3.8 kg decrease in birth weight.

Download Full-text

Adjustment for environmental factors on birth weight and weaning weight beef calves

Nihon Chikusan Gakkaiho ◽

10.2508/chikusan.39.426 ◽

1968 ◽

Vol 39 (10) ◽

pp. 426-431

Author(s):

Kazuo KUMAZAKI ◽

Teruo MATSUO

Keyword(s):

Birth Weight ◽

Environmental Factors ◽

Weaning Weight ◽

Beef Calves

Download Full-text

Effect of genetic and environmental factors on the phenotype characteristics of lambs

Biotechnology in Animal Husbandry ◽

10.2298/bah1502223p ◽

2015 ◽

Vol 31 (2) ◽

pp. 223-233 ◽

Cited By ~ 1

Author(s):

M.P. Petrovic ◽

Caro Petrovic ◽

D. Ruzic-Muslic ◽

N. Maksimovic ◽

M.M. Petrovic ◽

...

Keyword(s):

Body Weight ◽

Birth Weight ◽

Statistical Analysis ◽

Environmental Factors ◽

Weaning Weight ◽

Average Birth Weight ◽

Factors Affecting ◽

Package Program ◽

The Difference ◽

Genetic And Environmental Factors

The aim of this study was to determine the influence of environmental factors affecting body weight variability of lambs in two crossbreed groups: Pirot x W?rttemberg and Sjenica x W?rttemberg. Both populations were managed under the same farm conditions. The data were analyzed to determine the effect of age of the dam, weight of dam, birth type, sex, year and season, on the birth weight and weaning weight of crossbreed lambs. Statistical analysis was performed by GLM procedure using the SPSS statistical package program. The average birth weight of Pirot x W?rttemberg lambs was 3.56 kg while Sjenica x W?rttemberg lambs was slightly higher at 3.69 kg. The difference on birth weight between the two crosses was not statistically significant (P>0.05). The average weaning weight of Pirot x W?rttemberg lambs was 23.54 kg while Sjenica x W?rttemberg lambs had higher weight at 24.37 kg. The difference of 0.83 kg on weaning weight was statistically significant (P <0.05). Body weight, depending on the environmental factors, ranged from 3.17 to 3.96 kg at birth and from 22.12 to 24.18 kg at weaning in Pirot x W?rttemberg lambs. Body weight of Sjenica x W?rttemberg lambs ranged from 3.39 to 3.99 kg at birth and from 22.69 to 25.44 kg at weaning. Statistical analysis showed that the differences were statistically significant (P<0.05) and highly significant (P<0.01).

Download Full-text