Effects of pregnancy and feeding level on carcass and meat quality traits of Nellore cows

被引：9

作者：

Duarte, M. S. ^{[1
]}

Gionbelli, M. P. ^{[1
,2
]}

Paulino, P. V. R. ^{[1
]}

Serao, N. V. L. ^{[3
]}

Silva, L. H. P. ^{[1
]}

Mezzomo, R. ^{[1
]}

Dodson, M. V. ^{[4
]}

Du, M. ^{[4
]}

Busboom, J. R. ^{[4
]}

Guimaraes, S. E. F. ^{[1
]}

Valadares Filho, S. C. ^{[1
]}

机构：

[1] Univ Fed Vicosa, Dept Anim Sci, BR-36570000 Vicosa, MG, Brazil

[2] USDA ARS, US Meat Anim Res Ctr, Clay Ctr, NE 68933 USA

[3] Univ Illinois, Dept Anim Sci, Urbana, IL USA

[4] Washington State Univ, Dept Anim Sci, Pullman, WA 99164 USA

来源：

MEAT SCIENCE | 2013年 / 94卷 / 01期

关键词：

Ad libitum feeding; Beef; Gestation; Maintenance; R-value; Sarcomere length; DEDIFFERENTIATED FAT-CELLS; MYOFIBRIL FRAGMENTATION; SARCOMERE-LENGTH; SKELETAL-MUSCLE; ADIPOSE-TISSUE; BOVINE MUSCLE; BEEF; PERFORMANCE; RESISTANCE; MECHANISMS;

D O I：

10.1016/j.meatsci.2013.01.008

中图分类号：

TS2 [食品工业];

学科分类号：

0832 ;

摘要：

Carcass and meat quality traits of 16 pregnant and 5 non-pregnant cows fed at 1.2 times maintenance and 16 pregnant and 6 non-pregnant fed ad libitum were evaluated. Pregnancy did not affect final body weight (FBW; P = 0.0923), cold carcass yield (CCY; P = 0.0513), longissimus muscle area (LMA; P = 0.8260), rib fat thickness (RFT; P = 0.1873) and shear force (WBSF; P = 0.9707). A lower FBW (P = 0.0028), LMA (P = 0.0048) and RFT (P = 0.0001) were observed in feed restricted cows. However, no differences were found for CCY (P = 0.7243) and WBSF (P = 0.0759) among feeding level groups. These data suggests that carcass and meat quality traits are not affected by pregnancy status in Nellore cows. Moreover, although cows experiencing feed restriction did have reduced deposition of subcutaneous fat and lean tissue, there were no major impacts on meat quality traits. (c) 2013 Elsevier Ltd. All rights reserved.

引用

页码：139 / 144

页数：6

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