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| Investigation on Reproduction, Slaughter and Meat Traits of Tibetan Pigs in Guangdong Province |
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| DOI：10.16768/j.issn.1004-874X.2020.06.011 |
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| Abstract: |
| 【Objective】This study was conducted to understand the reproduction, slaughter, and meat traits of Tibetan pigs which were introduced from high altitude areas and raised in warm and humid plain areas of Guangdong province. These results provide a basis for the exploitation and utilization of resources and breeding of Tibetan pigs in Guangdong province. 【Method】Investigation on Tibetan pigs in three Tibetan pig breeding sites in Guangdong province were conducted during 2018 to 2019.【Result】The litter size of Tibetan sows was 8.38（±1.96）heads, and weaning survival rate of piglets was 92.53（±9.79）%; the birth weight of piglet was 0.75（±0.16）kg, and the average weaning weight was 5.38（±1.18）kg.
The carcass weight of Tibetan boars was 25.17（±6.14）kg, total lean meat rate was 50.46（±4.54）%, skin rate was 11.90
（±2.70）%, bone rate was 10.30（±1.77）%, fat rate was 25.51（±6.34）%, leaf fat rate was 7.41（±1.51）% and average back fat thickness was 2.80（±0.87）cm. The carcass weight of Tibetan sows was 22.35（±5.42）kg, total lean meat rate was 51.92（±5.73）%, skin rate was 12.57（±4.85）%, bone rate was 10.28（±2.00）%, fat rate was 22.97（±9.04）%, leaf fat rate was 6.19（±1.89）%, and average back fat thickness was 2.11（±0.59）cm. After slaughter, pH1h of Tibetan pigs was 6.25±0.08, pH24h was 5.25±0.08, shear force was 41.92（±1.02）N, drip loss at 24 h was 1.74（±0.12）%, muscle marbling score was 2.93（±0.17）points, and intramuscular fat content was 3.35（±0.53）%. 【Conclusion】The reproductive performance and meat production performance of Tibetan pigs in Guangdong area were improved compared with those of Tibetan pigs in high attitude area, indicating that Tibetan pigs were suitable for breeding in Guangdong. However, the meat production performance and meat quality of Tibetan pigs in Guangdong were significantly lower than those of conventional lean pigs, indicating that there was still much room for improvement in breeding. |
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