Year: 2019 | Month: December | Volume 9 | Issue 6
Controlled Reproduction along with Crossbreeding for Genetic Up-gradation of Non-descriptive Goats
DOI:10.30954/2277-940X.06.2019.18
Abstract:
The present study was aimed on the genetic improvement of non-descriptive goats through estrus synchronization and by crossbreeding with Beetal goats they were reported to be a good milker, having higher body weight and dressing percentage. AVIKESIL-S, indigenously developed progesterone intra-vaginal sponges were utilized for estrus synchronization in does maintained at livestock farm complex, Veterinary College, Hassan. Response to estrus synchronization was noticed in all the does (100%) under study, irrespective of the genetic background. Natural service was practised with three mating designs ie. G1-Beetal × Beetal, G2-Beetal × non-descriptive, G-3 non-descriptive × non-descriptive. Pregnancy test was performed with ultrasonography at 45 days post-mating. The conception rates in does of G1, G2 and G3 groups were 87.5, 87.5, and 75.0% respectively. Kidding rate were 85.7, 85.7 and 100.0% in G1, G2 and G3 groups, respectively. Litter sizes were 1.5, 1 and 1 in G1, G2 and G3 groups, respectively. Average birth weight in G1, G2 and G3 groups were 3.82±0.20, 2.82±0.12 and 2.00±0.09 kg, respectively and average daily gain in G1, G2 and G3 groups were 42.86±1.69, 33.81±1.28, and 33.57±0.87 g, respectively. Better growth performances were noticed up to 3 months of study period in G1 and G2 compared to G3 groups. It could be concluded that combined utilization of ES technology and crossbreeding in non-descriptive goats would provide superior kids for bulk marketing and ease management by avoiding dispersed kidding. Also more number of animals would be available for selection thus increasing the selection intensity their by improving the genetic improvement.
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