Effects of Different Roughage Material Diets on Slaughter Performance and Muscle Quality of Minxinan Black Rabbits

LIU Gongyan; SUN Haitao; LIU Ce; BAI Liya; YANG Liping; JIANG Wenxue; WANG Wenzhi; GAO Shuxia

doi:10.3969/j.issn.1006-267x.2020.09.037

Chinese Journal of Animal Nutrition >

2020 , Vol. 32 >Issue 9: 4277 - 4284

DOI: https://doi.org/10.3969/j.issn.1006-267x.2020.09.037

Effects of Different Roughage Material Diets on Slaughter Performance and Muscle Quality of Minxinan Black Rabbits

LIU Gongyan ,
SUN Haitao ,
LIU Ce ,
BAI Liya ,
YANG Liping ,
JIANG Wenxue ,
WANG Wenzhi ,
GAO Shuxia

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Shandong Key Laboratory of Animal Disease Control and Breeding, Animal Husbandry and Veterinary Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, China

Received date: 2020-03-23

Online published: 2020-09-17

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Abstract

This experiment was conducted to investigate the effects of different roughage material diets on slaughter performance and muscle quality of Minxinan black rabbits, in order to select the suitable roughage materials and dietary formula for Minxinan black rabbits. It will provide reference for off-site breeding of Minxinan black rabbits. One hundred and twenty healthy 35-day-old Minxinan black rabbits with similar body weight were selected in this experiment, and randomly divided into 3 groups with 5 replicates in each group and each replicate contained 8 rabbits (half male and half female) according to body weight and gender. Rabbits in the 3 groups were fed complete diets using peanut seedling powder, alfalfa powder and beanstalk powder as the main fiber sources, respectively. The trial lasted for 7 days for adaptation, and 105 days for test. At the end of the experiment, one male rabbit and one female rabbit were slaughtered in each replicate, and 10 rabbits were slaughtered in each group. The results showed that different roughage material diets had significant effects on pre-slaughter live weight, half eviscerated ratio, all eviscerated ratio and abdominal fat relative weight (P<0.05). Among them, the half eviscerated ratio and all eviscerated ratio of peanut seedling powder group and alfalfa powder group were significantly higher than that of soybean straw powder group (P<0.05), while the abdominal fat relative weight of alfalfa powder group was significantly higher than that of soybean straw powder group and peanut seedling powder group (P<0.05). The heart index, liver index and spleen index of Minxinan black rabbits were significantly affected by different roughage material diets (P<0.05), and those of peanut seedling powder group were significantly higher than those of soybean straw powder group (P<0.05). There was no significant difference in the contents of dry matter, crude protein and ash in muscle of Minxinan black rabbits under different roughage material diets (P>0.05), but there was significant difference in the content of ether extract in muscle (P<0.05). The content of ether extract in muscle of alfalfa powder group was 12.86% higher than that of soybean straw powder group (P<0.05). Therefore, different roughage material diets can affect the slaughter performance and muscle quality of Minxinan black rabbits. For the local breed resource of Minxinan black rabbits, the nutritional value of alfalfa powder is better than peanut seedling powder, and peanut seedling powder is better than soybean straw powder. However, for Minxinan black rabbits, the nutritional level of the diet should not be too high, and the dietary formula of peanut seedling powder group is suitable.

Key words： roughage type; Minxinan black rabbits; slaughter performance; muscle quality

Cite this article

LIU Gongyan , SUN Haitao , LIU Ce , BAI Liya , YANG Liping , JIANG Wenxue , WANG Wenzhi , GAO Shuxia . Effects of Different Roughage Material Diets on Slaughter Performance and Muscle Quality of Minxinan Black Rabbits[J]. Chinese Journal of Animal Nutrition, 2020 , 32(9) : 4277 -4284 . DOI: 10.3969/j.issn.1006-267x.2020.09.037

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