飼糧粗纖維與粗蛋白質含量對種母鵝初產之影響

本試驗旨在探討育成期飼糧粗纖維含量（10、15%）及產蛋期飼糧粗蛋白質含量（15、18%）對白中國鵝（White Chinese geese）及白羅曼鵝（White Roman geese）種母鵝初產之影響。15週齡時選取224隻（48♂、176♀），依體重平均分配至4個處理組（2品種×2粗纖維含量）、每處理4欄，每欄3♂、11♀；分別餵以含10或15%粗纖維含量飼糧，以調查育成期（白中國鵝為15～32週齡，白羅曼鵝為15～40週齡）不同飼糧粗纖維含量對種母鵝初產之影響。俟各處理組產蛋率達5%後，再分為兩粗蛋白質含量之處理，每處理2欄，分別餵以15或18%粗蛋白質含量飼糧，以比較產蛋期（白中國鵝為33～67週齡，白羅曼鵝為41～71週齡）不同粗蛋白質含量對種母鵝第一產蛋期產蛋性能之影響。結果顯示，育成期飼糧粗纖維含量（10，15%）對兩品種種鵝育成期之體重及採食量變化、初產體重及初產日齡影響皆不顯著（P＞0.05），但全期而言，則以15%粗纖維飼糧處理組有較低之飼料採食量。白中國鵝初產日齡較早（P＜0.05）、初產體重也較輕（P＜0.05）。產蛋期飼糧粗蛋白質含量對兩品種種鵝產蛋期之體重及採食量變化、受精率、孵化率、平均每隻母鵝之產蛋數及出雛數影響皆不顯著（P＞0.05），僅白羅曼鵝18%飼糧粗蛋白質處理組，其平均每隻母鵝出雛數顯著（P＜0.05）高於白中國鵝15及18%飼糧粗蛋白質處理組。初產及結束體重、平均每隻母鵝之產蛋數及出雛數，皆以白中國鵝顯著（P＜0.05）較白羅曼鵝為低。白中國鵝之高峰產蛋率為25.04%、白羅曼鵝則為37.24%，分別在2月及3月達產蛋高峰。

關鍵字

鵝；繁殖性能；粗纖維；粗蛋白質；育成期；產蛋期

並列摘要

The experiment was conducted to evaluate the effects of crude fiber (CF) (10, 15%) in holding diet and crude protein (CP) (15, 18%) in breeding diet on performance of first laying White Chinese geese and White Roman geese. Two hundred and twenty-four birds (48 ganders and 176 geese) of 15-week-old, were selected by body weight and were divided into four treatment groups (2 breeds X 2 CF levels), each with four replicate pens. Two treatments including feeding 10 or 15% CF diet during the holding period were designed (15-32 weeks of age for White Chinese geese, 15-40 weeks of age for White Roman geese) to examine the effects of CF in holding diet on prebreeding performance. After the laying rate reached 5%, each treatment further received different levels of CP (15, 18%) diets, 33-67 weeks of age for White Chinese geese and 41-71 weeks of age for White Roman geese, to determine the effects of laying diet CP on reproductive performance over the first laying period. Dietary CF in holding period had no effect (P ＞ 0.05) on body weight or feed intake of prebreeding period, body weight and age at first egg for both breeds. However, feed intake were lower in birds fed 15% CF than in those fed 10% CF in the holding period. White Chinese geese was in earlier (P ＜ 0.05) age and lower body weight than White Roman geese at first laying. Dietary CP in laying period also showed no effect (P ＞ 0.05) on body weight or feed intake of laying period, fertility, hatchability, number of eggs and goslings per goose for both breeds. White Roman geese fed 18% CP were higher (P ＜ 0.05) in number .of goslings per goose than White Chinese geese fed 15 and 18% CP. White Chinese geese had lower (P＜ 0.05) body weight both at first laying and terminal laying, less eggs and goslings per goose than White Roman geese did. The peak of laying was 25.04% (in February) for White Chinese geese and 37.24% (in March) for White Roman geese, respectively.

並列關鍵字

Goose ； Reproductive performance ； Crude fiber ； Crude protein ； Holding period ； Laying period

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