EFFECTS OF REPLACEMENT OF ALFALFA BY BIG-LEAF MULBERRY ON GROWTH PERFORMANCE, DIGESTION AND MEAT QUALITY IN GROWING RABBITS

文献类型： 外文期刊

第一作者： Wu, X. Z.

作者： Wu, X. Z.;Dai, S. F.;Wang, L. X.;Yang, P. L.;Gao, X. H.;Wen, Z. G.;Zhu, M. X.

作者机构：

关键词： big-leaf mulberry; digestibility; growth performance; meat quality; rabbit

期刊名称：WORLD RABBIT SCIENCE （ 影响因子：1.233； 五年影响因子：1.018 ）

ISSN： 1257-5011

年卷期： 2019 年 27 卷 4 期

页码：

收录情况： SCI

摘要： This study aimed to investigate the effect of sundried big-leaf mulberry (BLM) as a replacement for alfalfa on the growth performance, digestibility of nutrients, nitrogen (N) utilisation and meat quality in New Zealand White rabbits. One hundred and sixty weaned rabbits, aged 35 +/- 1 d and with a body weight of 755 +/- 26 g, were randomly assigned to the 4 treatments with 20 replicates of 2 rabbits (1 male and 1 female) each. Animal performance was evaluated between the 35th and 77th d of age in 40 animals per treatment. The coefficients of total tract apparent digestibility (CTTAD) of nutrients and N utilisation were measured between 77 to 83 d of age in 30 animals per treatment. The control rabbits were fed a corn-soybean mealalfalfa meal based diet. The three experimental groups were fed a similar diet in which the alfalfa meal was replaced by 10% (BLM10), 20% (BLM20), or 30% (BLM30) BLM. The final body weights and average daily gain were higher (P<0.05) in BLM20 rabbits compared to control and BLM30 rabbits. Although BLM Inclusion had no effects on the CTTAD of dry matter, organic matter and crude protein (P>0.10), the CTTAD of ether extract was higher in rabbits fed the diets based on BLM (P<0.05). No effect of treatment was noted on ingested and faecal N. Urinary (P<0.05) and retained N (P<0.10) were higher in animals fed with BLM30 and BLM20 diets, respectively. Dietary BLM supplementation increased a* (P<0.05) and tended to reduce L* (P<0.10) in rabbit meat samples. It was concluded that replacing alfalfa meal with BLM (20%) can promote growth and Increase ether extract digestibility. Additionally, dietary BLM supplementation can Increase the redness value of meat.

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