RT Journal T1 ENVIRONMENTAL FACTORS AFFECTING PREWEANING GROWTH TRAITS OF BUCHI SHEEP IN PAKISTAN A1 M. Akhtar K. Javed A1 M. Abdullah A1 N. Ahmad A1 M. A. Elzo JF Journal of Animal and Plant Sciences JO JAPS SN 1018-7081 VO 22 IS 3 SP 529 OP 536 YR 2012 FD 2012/06/01 DO DOI NA AB

The present investigation was carried out to study the influences of environmental factors on the preweaning growth traits in Buchi sheep maintained at the Livestock Experiment Station Jugaitpir, Pakistan. The data were collected from 1986 to 2010.  Means± SE were 2.84 ± 0.009 kg for birth weight, 7.64 ± 0.014 kg for weight at around 60 days of age, 12.64 ± 0.03 kg for weaning weight and 12.55 ± 0.03 kg for weaning weight adjusted to 120 days of age. Statistical analyses were performed by using the mixed procedure of the SAS statistical package program.  The model included the effects of year and season of birth, sex, type of birth, parity, age and weight of dam at lambing, and two-way interactions between these factors. Results showed that all preweaning traits were significantly (P < 0.05) affected by year, sex, interaction between year and season, and interaction between year and sex of lamb. A significant interaction (P < 0.05) between season and sex existed for both weaning traits. In addition, weaning weight adjusted to 120 days was also significantly affected by the interaction between sex and type of birth. Birth weight was affected (P < 0.05) by season, birth type and parity. Age and weight of dam were not significant factors for preweaning traits. The non-significance of type of birth on preweaning growth may have been partly due to the low rate of twin births (4%) for Buchi sheep in this population. Findings here suggested that farm management must be appropriately changed to compensate for changes in environmental effects over time.

K1 Buchi sheep, environmental factors, growth, interaction, preweaning PB Pakistan Agricultural Scientists Forum LK https://thejaps.org.pk/AbstractView.aspx?mid=2012-JAPS-301