volume 44 issue 3 (september 2010) : 157 - 167
FACTORS AFFECTING PRE-WEANING BODY WEIGHTS AND GROWTH RATES IN CROSSBRED PIGS*
1Sri Venkateswara Veterinary University,
Hyderabad - 500 03, India
Published In
Indian Journal of Animal Research
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volume 44 issue 3 (september 2010) : 157 - 167
FACTORS AFFECTING PRE-WEANING BODY WEIGHTS AND GROWTH RATES IN CROSSBRED PIGS*
1Sri Venkateswara Veterinary University,
Hyderabad - 500 03, India
ABSTRACT
Data pertaining to the pre-weaning body weights and average daily gains of 2909 piglets
belonging to two crossbred (50% and 75% LWY-Desi) genetic groups were analyzed. Genetic
group, period and season of birth and LSB in general, affected all the body weights highly
significantly. The overall least-squares mean body weights were 1.11 ± 0.01, 2.16 ± 0.01, 3.20
± 0.02, 4.32 ± 0.02, 5.44 ± 0.03, 6.52 ± 0.04, 7.65 ± 0.04, 8.79 ± 0.05 and 10.13 ± 0.06 kg
at birth, 1, 2, 3, 4, 5, 6, 7 and 8 weeks age, respectively. The overall least squares mean ADGs
during 0 and 1, 1 and 2, 2 and 3, 3 and 4, 4 and 5, 5 and 6, 6 and 7, 7 and 8 and birth and 8
weeks were 0.149 ± 0.002, 0.148 ± 0.002, 0.158 ± 0.002, 0.161 ± 0.002, 0.154 ± 0.002,
0.161 ± 0.002, 0.165 ± 0.003, 0.191 ± 0.003 and 0.161 ± 0.001 kg, respectively. Genetic and
phenotypic correlations among body weights were mostly positive and medium to high.
Correlations among average daily gains were very low and without any trend
belonging to two crossbred (50% and 75% LWY-Desi) genetic groups were analyzed. Genetic
group, period and season of birth and LSB in general, affected all the body weights highly
significantly. The overall least-squares mean body weights were 1.11 ± 0.01, 2.16 ± 0.01, 3.20
± 0.02, 4.32 ± 0.02, 5.44 ± 0.03, 6.52 ± 0.04, 7.65 ± 0.04, 8.79 ± 0.05 and 10.13 ± 0.06 kg
at birth, 1, 2, 3, 4, 5, 6, 7 and 8 weeks age, respectively. The overall least squares mean ADGs
during 0 and 1, 1 and 2, 2 and 3, 3 and 4, 4 and 5, 5 and 6, 6 and 7, 7 and 8 and birth and 8
weeks were 0.149 ± 0.002, 0.148 ± 0.002, 0.158 ± 0.002, 0.161 ± 0.002, 0.154 ± 0.002,
0.161 ± 0.002, 0.165 ± 0.003, 0.191 ± 0.003 and 0.161 ± 0.001 kg, respectively. Genetic and
phenotypic correlations among body weights were mostly positive and medium to high.
Correlations among average daily gains were very low and without any trend
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In this Article
APC
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Published In
Indian Journal of Animal Research