飼糧限飼與輔以生鮮狼尾草對白羅曼種鵝繁殖性狀之影響

本文旨在探討種鵝基礎飼糧任或限飼與輔以生鮮狼尾草對白羅曼種鵝繁殖性能之影響。採用彰化種畜繁殖場繁殖之白羅曼鵝，以第3產次之種公與母鵝各120與400隻，逢機分配至5種飼糧處理組，每組2欄，每欄飼養種公與母鵝各12與40隻。飼糧處理依序為基礎飼糧任飼組（對照組）、基礎飼糧85%限飼組及基礎飼糧85%限飼組輔以1.5、3.0或4.5kg之生鮮狼尾草等共5種飼糧處理組。基礎飼糧之粗蛋白質與代謝能含量分別為18%與2,650kcal/kg。結果顯示，基礎飼糧任飼組之鵝隻於試驗結束的體重顯著較其他4組者重。種鵝於基礎飼糧85%限飼組及基礎飼糧85%限飼組輔以1.5kg生鮮狼尾草之前期（種鵝開始產蛋至產蛋率達35%之階段）種蛋之受精率均顯著較其他3組者佳；其於餵飼基礎飼糧85%限飼組之全期種蛋孵化率，則顯著較基礎飼糧85%限飼組且輔以3.0kg生鮮狼尾草與基礎飼糧任飼組者佳（48.3vs.39.7與32.5%）。種鵝於基礎飼糧85%限飼組及基礎飼糧85%限飼組輔以1.5及4.5kg之生鮮狼尾草之全期受精蛋孵化率，均顯著較基礎飼糧任飼組者佳（67.8、63.7、66.1vs.54.1%）。基礎飼糧任飼組之種鵝胸部重，顯著較其他各組者重（1.14vs.0.85、0.93、0.99及0.94kg），而其腿重則顯著較85%限飼組及基礎飼糧85%限飼組輔以1.5kg之生鮮狼尾草組者重（0.82vs.0.68及0.71kg）。綜上所述，基於經濟效益與動物福祉的考量，建議種鵝業者可以飼糧限飼並輔以新鮮牧草的方式飼養種鵝，提升種蛋的受精率與孵化率。

關鍵字

狼尾草；繁殖性狀；白羅曼鵝

並列摘要

This study was to investigate the effects of feed restriction and green napiergrass supplementation at laying period of White Roman goose in a traditional geese house. According to a completely randomized design, geese were randomly assigned to five treatments, treatments including of basal ration ad libitum (Control), 85% of basal ration feed restriction, 85% of basal ration feed restriction plus 1.5, 3.0 or 4.5 kg of green napiergrass Taishigrass No. 2. Five hundred and twenty geese of the third lay were randomly allotted into five dietary treatments, each including 2 pens and each pen with 12 males and 40 females. The diets for laying period contain 18% CP and 2,650 kcal ME/kg. The results showed that the geese feeding basal ration ad libitum had heavier body weight than the other 4 treatments at the time when the geese were ended egg production. Geese feeding 85% of basal ration feed restriction and 85% of basal ration feed restriction plus 1.5 kg of grass had higher fertility than feeding basal ration ad libitum and 85% of basal ration feed restriction plus 3 and 4.5 kg of grass at ESP1 (79.8, 78.3 vs. 67.2, 64.0 and 65.4%). Geese feeding 85% of ad libitum had higher hatchability than feeding ad libitum and 85% of ad libitum plus 3 kg and ad libitum of grass (48.3 vs. 39.7 and 32.5%). Geese feeding 85% of basal ration feed restriction and 85% of basal ration feed restriction plus 1.5 and 4.5 kg of grass had higher hatchability of fertilize egg than feeding basal ration ad libitum (67.8, 63.7, 66.1 vs. 54.1%). The geese feeding basal ration ad libitum had heavier breast weight than those feeding 85% of basal ration feed restriction, 85% of basal ration feed restriction plus 1.5, 3.0 or 4.5 kg of grass (1.14 vs. 0.85, 0.93, 0.99 and 0.94 kg/bird) and heavier leg weight than those feeding 85% of basal ration feed restriction and 85% of basal ration feed restriction plus 1.5 kg of grass (0.82 vs. 0.68 and 0.71 kg). Therefore, considering the economic benefits and animal welfare, feed restriction and green grass feeding is a good way to promote fertility and hatchability of geese.

並列關鍵字

Napiergrass ； Reproduction performance ； White Roman geese

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