Effects of Dietary Levels of Energy and Protein at the Finishing Stage. 1.Performance and Pelt Production of Rex Rabbits

• 主要作者: Perpustakaan UGM, i-lib
• 格式: Article NonPeerReviewed
• 出版: [Yogyakarta] : Universitas Gadjah Mada 1995
• 主題: Jurnal i-lib UGM
• 在線閱讀: https://repository.ugm.ac.id/26608/; http://i-lib.ugm.ac.id/jurnal/download.php?dataId=9641
• 機構: Universitas Gadjah Mada

ABSTRACT Unlike meat-type rabbits 'Flemish Giant, New Zealand White or Californian] winch are slaughtered at 10 - 12 weeks old, Rex rabbit, a fine fur-producing rabbit, arc harvested at 6 - 8 monthold, The nutrient requirement at the 'finisher stage and for fur production purpose may be different from those of starter stage or meat production purpose. Ninelysix Rex rabbits of 3,5 to 4 months old were used m a 3 x 4 factorial experiment to study the effect of levels of protein 114, 16 and 18%] and levels of digestible energy [DE - 2000, 2250, 2500 and 2750 kcal/kg] on the perfomianee and fur production Rex rabbits. Each treatment combination consisted of 8 unsexed rabbits. Animal performance and fur production were observed. Differences among treatment means of each parameter tested were analysed by LSD. In general, results indicated that there were no significant interaction occured between levels of energy and protein on the parameters measured, Feed intake WU, dry matter digestibility IDMDI, percentage of carcass [PC1. edible meat [PEN% fat bone [PB[ and skin [PS], and weight [RPW] and area IRPAJ of raw pelt wore not significantly different among treatments. Higher dietary level of BE and protein, however significantly increased bodyweight gain [DWG] and feed efficiency [FCR], and dried weight 'DPW' and area [DPAI of pelt Ranges of values for the tested parameters were 104 - 121 g/rabba/d for Fi, 12 - 16 g/rabbiLid for BING, 6.9 - 9 7 for FCR. and 53 -62% for MID. Values for PC, PEN, PF, PB and PS ranged from 51 to 54%, 67 to 71%, 17 to 6,4%, 23 to 29% and from 7.4 to S O, respectively. Pelt production, in terms of pelt weight and pelt area were 172 - 205 pelt and 1136 - 1223 cm2/pelt, respectively for raw pelts. Corresponding values for dried pelt were 119 - 11 Og and 1485 - 172.8 ern2 Key Words: Energy, Protein, Performance, Pelt Production, Rex Rabbits