Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/90322
標題: Investigating the welfare of laying hens in the conventional cage and floor production systems by Welfare Quality®
以Welfare Quality®探討傳統籠飼與平飼系統的蛋雞福祉
作者: Ting-Yi Wang
王亭懿
關鍵字: 蛋雞
福祉
laying hens
welfare
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摘要: 關心動物福祉已成為國際上之趨勢,現今所發展出數種福祉評估系統,除了能提供完善之評估項目予以飼養者自身檢視外,並能作為消費者選購畜產品時之依據。本研究係由較為著名的三種福祉評估系統中,選用Welfare Quality®系統來比較傳統籠飼與平飼系統蛋雞的福祉狀況,以探討適於台灣蛋雞福祉的生產系統。由於該系統在蛋雞方面尚未提供分數轉換之方法,因此,另使用荷蘭瓦格寧根大學研究中心所提出之方法,將評估結果轉為分數表達。產蛋母雞分別飼養於籠飼與平飼,於41與72週齡時進行福祉評估,分別代表產蛋期中與期末的福祉狀況,並測定65、72週齡時的蛋品質,以研究生產系統對於蛋品質之影響。結果顯示,籠飼在免於飢渴、舒適的溫度、社交行為的表現等標準中有較高的分數,社交行為之表現屬籠飼較佳,但其代表性需待進一步探討,在籠飼母雞無法測量人類與動物之關係。在人畜關係因條件因素方面,籠飼無法進行測量,故無法進行比較,而其餘標準皆為平飼較佳。蛋品質方面,平飼蛋重較重,但因室溫較高而新鮮度較差。Welfare Quality®能應用於多種系統,但由於歐盟已禁止巴達利籠之使用,因此,特定項目可能無法完全適用,且部份項目的分數轉換仍需進一步探討。因為以上之限制,Welfare Quality®目前仍無法作為本土飼養系統之福祉代表,但就平飼系統而言,是可作為評級之依據的。
Concerning animal welfare had become a trend around the world. Several welfare assessment systems developed can, in addition to providing complete assessment of animal welfare to the farm keepers, serve as a reference for consumers to purchase animal products. This study selected Welfare Quality® from the one of three famous welfare assessment systems to compare laying hens' welfare status under traditional cage and floor production systems in order to discuss the appropriate egg layer production system in Taiwan. As the fractional conversion method of laying hens had not yet provided, therefore, the result will be converted into scores by the proposed method provided by the Wageningen University Research Centre. Laying hens were housed in either cages or floor, and the welfare assessment were carried out at 41 and 72 weeks of age which respectively represent the welfare status at the middle and the end of egg production period. The egg quality was determined at 65 and 72 weeks of age to study the effect of production system on the egg quality. Results indicate that cage system had higher scores in freedom from hunger, comfortable temperature, and social behavior. The performance of the social behavior of the cage system was better, but it's validity needs further consideration, since the relationship between humans and animals can't be measured in caged hens. But for other standards, the floor system was better overall. For the egg quality, the eggs laid in floor system were heavier but inferior for freshness due to higher room temperature. Welfare Quality® can be used in a variety of systems, but there were some specific measurements can't fully applied in cage because it had been banned in EU. Therefore, these score still needs to be studied in the future. That is the reason why Welfare Quality® might be unable to evaluate the welfare status of every local production system, but it can be used for rating in the floor system.
URI: http://hdl.handle.net/11455/90322
文章公開時間: 2017-08-21
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