【摘要】：蛋雞舍圍護(hù)結(jié)構(gòu)的保溫隔熱性能是影響雞舍溫度的穩(wěn)定性,進(jìn)而影響蛋雞健康和生產(chǎn)性能的關(guān)鍵因素。由于蛋雞舍一般不采暖,依靠蛋雞的自身顯熱產(chǎn)熱量來(lái)維持冬季蛋雞舍內(nèi)溫度,因此如果蛋雞舍冬季飼養(yǎng)密度較低、通風(fēng)過(guò)度或圍護(hù)結(jié)構(gòu)保溫性能不足,都難以滿(mǎn)足蛋雞舍溫度環(huán)境的要求。如何確定不同氣候區(qū)雞舍圍護(hù)結(jié)構(gòu)必要的保溫性能和飼養(yǎng)密度要求是解決蛋雞舍冬季通風(fēng)和保溫矛盾問(wèn)題的關(guān)鍵。該文通過(guò)建立蛋雞舍動(dòng)態(tài)熱平衡理論模型,系統(tǒng)分析了不同氣候區(qū)雞舍圍護(hù)結(jié)構(gòu)的最低熱阻需求,得出不同氣候區(qū)雞舍圍護(hù)結(jié)構(gòu)的保溫性能要求與蛋雞飼養(yǎng)方式(密度)的關(guān)系。結(jié)果表明:冬季舍外計(jì)算溫度分別為-25℃(東北、內(nèi)蒙古)、-15℃(華北、西北)、0℃(長(zhǎng)江以南)的地區(qū),蛋雞舍墻體、屋面的最小熱阻應(yīng)分別不小于0.778、0.972;0.573、0.716;0.266、0.333(m~2·℃)/W;對(duì)應(yīng)3層全階梯籠養(yǎng)、4層半階梯籠養(yǎng)和4層疊層、6層疊層、8層疊層籠養(yǎng)等飼養(yǎng)模式最大飼養(yǎng)密度下,所能夠適應(yīng)的圍護(hù)結(jié)構(gòu)冬季室外計(jì)算溫度應(yīng)分別不低于-14、-17、-19、-22、-23℃。研究結(jié)果為不同氣候地區(qū)選擇適宜飼養(yǎng)模式以及密閉式蛋雞舍圍護(hù)結(jié)構(gòu)保溫系統(tǒng)的設(shè)計(jì)提供了理論依據(jù)。
[Abstract]:The thermal insulation performance of the envelope structure is the key factor affecting the stability of the temperature, and then the health and production performance of the laying hens. Because the laying hens do not usually heat, they rely on the heat production of the laying hens to maintain the temperature of the laying hens in winter. Therefore, if the breeding density of the laying hens is low in winter, the ventilation is excessive or the insulation performance of the envelope structure is insufficient. It is difficult to meet the requirements of the temperature environment of the laying hens. It is the key to solve the contradiction between ventilation and insulation of laying hens in winter that how to determine the necessary heat preservation performance and the requirement of feeding density of the enclosure structure in different climate regions. Based on the dynamic thermal balance model of laying hens, the minimum thermal resistance requirements of the enclosure structure in different climate regions are systematically analyzed in this paper. The relationship between the heat preservation performance requirements of the enclosure structure and the rearing mode (density) of laying hens in different climates was obtained. The results show that the minimum thermal resistance of the wall and roof should be no less than 0.778,0.972 in the areas of-25 鈩，

本文編號(hào)：2438367