TY  - JOUR
T1  - The Effects of Some Environmental Factors Affecting on the Weaning Weight of Sistani Beef Calves
AU - Alipanah, Masoud AU - Bazzi, Hossein 
JO  - Journal of Animal and Veterinary Advances
VL  - 10
IS  - 11
SP  - 1480
EP  - 1483
PY  - 2011
DA  - 2001/08/19
SN  - 1680-5593
DO  - javaa.2011.1480.1483
UR  - https://makhillpublications.co/view-article.php?doi=javaa.2011.1480.1483
KW  - Iran
KW  -birth weight
KW  -Sistani beef calf
KW  -205 days weaning weight
KW  -environmental effects
AB  - This experiment analyses the growth of calves of the conservation nucleus for Sistani cattle. Data in this study were obtained from the Sistani cattle Research station of Sistan and Baluchistan province in Iran. Weaning weights data was available on 372 Sistani beef calves (198 male and 174 female), born between 2003 and 2007. The effects of sire, age of dam, year/season of birth, sex of calf and birth weight was used as a covariate on the 205 days weaning weight which was computed by analysis of variance (GLM). Overall mean of the 205 days weaning weight of all calves was 127.25 kg. According to the age of the dam, the weaning weight increased up to 7 years (with the exception of 6 years) and after the maximum (137.6 kg) decreased. The minimum values were found in the group of 8 years old (97.7 kg) cows. With respect to birth year, the highest weaning weight (141.1 kg) was observed in 2007 and the lowest (101.66 kg) in 2003. The year effect varied but the trend observed is that of an increase in weaning weight with time. For birth season, spring, summer, autumn and winter the 205 days weaning weight was 112.2, 115.3, 123.2 and 131 kg, respectively. Male calves reached 121.6 kg and female calves 119.2 kg mean value of the adjusted weaning weight.
ER  -