Effect of Reused Broiler Litter on Broilers Performance

• Main Authors: Wang-Hsien-Hsu, 徐王鮮
• Other Authors: Tsai, Ming-chu
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/23466849019172732455

碩士 === 環球科技大學 === 生物技術研究所 === 104 === Poultry products are good sources of protein in Taiwan, but large amount of poultry litter produced from the poultry industry cannot be ignored. The chicken litter with the nutrients for plant is a good source of organic fertilizers. In recent years, the concerns about the environmental impact of chicken litter form publics have been raising, so the treatment and reduction of chicken litter are the problem that the poultry industry must face to. The recording tables of management, including the date of placing chicks, chick numbers of each batch, daily death numbers, feed consumption of stages, and out chicken date, and whole field sold feather number, the date and numbers of catching, total weight of catching, and the reuse times feeding of bedding materials, were applied to assess the production effectiveness of a broiler farm and to investigate the litter amounts of single batch and reused broiler litter. The results showed the periods of raising, the average weight per bird of catching, the average feed conversion rates and average fertility rates were 35.3–36.0 days, 2.08–2.15 kg, 1.48–1.50 and 95.5%–97.6%, respectively for the 1st to 5th batches of reused broiler litter as bedding materials. It showed no difference among batches (P > 0.05). The death numbers and average mortality rates were 883, 284, 207, 222, 426 and 58 birds and 1.36%, 0.44%, 0.32%, 0.35%, 0.67% and 0.09% for the 1, 2, 3, 4, 5 and 6 week ages, respectively. The average death numbers and mortality rates of the first week were significantly higher than those of other week ages (P < 0.05). The statistic analysis of interaction among batches, week age and batch × week age on death numbers and mortality rates showed there were no significant difference on the death numbers and mortality rates among batches (P > 0.05), but those among week ages were significantly difference (P < 0.001). There were no interaction effect between batch and week age (P > 0.05). The results of investigation on rice hull consumption and broiler litter yield showed they were 0.174 (0.164–0.202) and 1.19 (0.95–1.36) kg/bird, and 0.162 (0.158–0.166) and 1.25 (1.15–1.31) kg/bird, respectively, in open and closed types broiler houses. The thickness of bedding materials increased, and broiler litter yield decreased with the litter recycling times increased. The broiler litter yield of the second to fifth batches were 0.78–0.63 kg/bird. The results of this study showed the reused broiler litter did not affect the production efficiency of broiler farm, and could reduce the yield of broiler. The recycling of broiler litter as bedding material can be a management model for the poultry industry’s reference.