This experiment was conducted to study the effects of rice husk powder on growth performance, nutrient apparent digestibility and slaughter performance of growing meat rabbits. Six hundred New Zealand rabbits at 28 days of age and with similar body weight were randomly divided into 5 groups with 6 replicates per group, and 20 rabbits per replicate with half male and half female. Rabbits in the 5 groups were fed diets supplemented with 0 (control group), 5%, 10%, 15% and 20% rice husk powder, respectively. The pre-test period lasted for 7 days, and the experimental period lasted for 35 days. The results showed that diet with different addition amounts of rice husk powder had no significant effects on the average daily feed intake of rabbits (P>0.05), but the average daily gain and mortality of rabbits decreased with the increase of the rice husk powder addition amount, and the feed/gain increased. The average daily gain of rabbits in 15% and 20% rice husk powder group was significantly decreased (P<0.05), while the feed/gain was significantly increased compared with the control group (P<0.05). Diet with different addition amounts of rice husk powder had no significant effects on the apparent digestibility of ether extract (EE), crude fiber (CF), neutral detergent fiber (NDF), acid detergent fiber (ADF) and lignin (ADL) (P>0.05). The apparent digestibility of energy and crude protein (CP) showed a gradual downward trend with the increase of rice husk powder addition amount, and that in 15% and 20% rice husk powder groups was significantly decreased compared with the control group (P<0.05). With the increase of rice husk powder addition amount, the slaughter performance of rabbits showed a downward trend, and the half carcass weight, full carcass weight, half eviscerated rate and full eviscerated rate in 20% rice husk powder group was significantly lower than those in the control group (P<0.05). According to the test indexes of experiment, the addition amount of rice husk powder in the diet of growing meat rabbits should be not more than 15%.
GUO Zhiqiang
,
WANG Bin
,
LI Congyan
,
KUANG Liangde
,
MEI Xiuli
,
ZHENG Jie
,
YANG Rui
,
XIE Xiaohong
,
LEI Min
. Effects of Rice Husk Powder on Growth Performance, Nutrient Apparent Digestibility and Slaughter Performance of Growing Meat Rabbits[J]. Chinese Journal of Animal Nutrition, 2021
, 33(9)
: 5219
-5225
.
DOI: 10.3969/j.issn.1006-267x.2021.09.041
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