Short Communications

Effects of Pellet Diet Supplementation on Growth Performance, Slaughter Traits, Development of Tissues and Organs of Dairy Bull Calves for Veal Production

  • WANG Yongchao ,
  • JIANG Chenggang ,
  • CUI Xiang ,
  • DIAO Qiyu ,
  • TU Yan
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  • Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China

Received date: 2012-11-22

  Online published: 2013-04-12

Abstract

This study was designed to investigate the effects of pellet diet supplementation on growth performance, slaughter traits, development of tissues and organs of dairy bull calves for veal production. Twenty-four newborn Holstein bull calves with an average weight of (41.00±1.55) kg were randomly allocated to two dietary treatments, calves in treatment A were fed milk replacer and Chinese wildrye, and those in treatment B were fed milk replacer, pellet diet and Chinese wildrye. The trial lasted for 180 d. Growth performance of calves was measured. Five calves from each treatment were slaughtered to determine slaughter traits and wet weights of each tissue and organ. The results showed that there were no significant differences in average daily gain (0.73 vs. 0.74 kg) and feed conversion ratio (2.39 vs. 2.36) during the whole experimental period (P>0.05), the differences in wither height, body length, heart girth, cannon circumference and hip widths were not significant either (P>0.05); the diarrhea incidence and the diarrheic rate of calves in treatment B were 4.87 and 1.31 percent lower than those in treatment A, respectively (P<0.05); no significant differencs in dressing percentage, meat percentage, dressing percentage of carcass and ratio of meat to bone were found between two treatments (P>0.05); additionally, the wet weight of stomachus compositus and percentage of each stomach compartment in empty body weight of calves in treatment B were significantly higher than those in treatment A (P<0.01). Dietary supplementation of pellet diet can maintain growth performance and slaughter traits of Holstein bull calves on 1 to 181 days after birth for veal production specifically, and improve the development of stomachus compositus, but reduce diarrhea incidence and diarrheic rates.

Cite this article

WANG Yongchao , JIANG Chenggang , CUI Xiang , DIAO Qiyu , TU Yan . Effects of Pellet Diet Supplementation on Growth Performance, Slaughter Traits, Development of Tissues and Organs of Dairy Bull Calves for Veal Production[J]. Chinese Journal of Animal Nutrition, 2013 , 25(5) : 1113 -1122 . DOI: 10.3969/j.issn.1006-267x.2013.05.029

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