PMID- 7759358
OWN - NLM
STAT- MEDLINE
DCOM- 19950627
LR  - 20190512
IS  - 0021-8812 (Print)
IS  - 0021-8812 (Linking)
VI  - 72
IP  - 12
DP  - 1994 Dec
TI  - The effect of live weight gain and live weight loss on body composition of Merino 
      wethers: chemical composition of the noncarcass organs and the empty body.
PG  - 3098-109
AB  - Chemical composition of the noncarcass organs, combined noncarcass organs, and 
      fleece-free empty body (FFEB) was measured during live weight gain (LWG) and live 
      weight loss (LWL) to determine the effect of different periods of normal and 
      retarded growth on chemical composition of noncarcass organs and FFEB. 
      Thirty-five Merino wethers had ad libitum access to the experimental diet (17.23% 
      CP and 12.09 MJ/kg of DE) to grow from 23.0 to 33.0 kg live weight and then were 
      fed to lose a total of 10 kg in three periods of 25 d each at the rate of 133 
      g/d. Groups of five wethers were slaughtered at live weights of 23.0, 26.3, 29.6, 
      and 33.0 kg during LWG and 29.6 (first period), 26.3 (second period), and 23.0 kg 
      (third period) during LWL. The lower combined noncarcass weight in LWL wethers 
      than in LWG wethers at 23.0 and 26.3 kg of live weights was due to the 
      significantly lower protein weight at 23.0 and 26.3 kg (P < .01) and water weight 
      at all common slaughter weights (P < .01). Chemical fat in the combined 
      noncarcass organs was significantly greater in LWL wethers than in LWG wethers at 
      23.0, 26.3 (P < .01), and 29.6 kg (P < .05). The general increase of chemical fat 
      in the combined noncarcass organs of the LWL wethers was mainly due to the 
      significant increase in the chemical fat in the head and feet at 23.0 (P < .01), 
      26.3, and 29.6 kg (P < .05), liver at 23.0 kg (P < .01), and total alimentary 
      tract fat at 23.0 (P < .01) and 29.6 kg (P < .05). Although fleece-free empty 
      body weight (FFEBW) was similar in LWG and LWL wethers at all common slaughter 
      weights, FFEB water weight was lower significantly in LWL wethers at 23.0, 26.3 
      (P < .01), and 29.6 kg (P < .05) and that of chemical fat was greater 
      significantly in LWL wethers at 23.0 (P < .01), 26.3, and 29.6 kg (P < .05) than 
      in LWG wethers. Wethers after weight loss had more chemical fat and less water in 
      their FFEB than normal growing wethers at the same FFEBW.
FAU - Aziz, N N
AU  - Aziz NN
AD  - Department of Animal and Poultry Science, University of Guelph, Ontario, Canada.
FAU - Murray, D M
AU  - Murray DM
FAU - Ball, R O
AU  - Ball RO
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PL  - United States
TA  - J Anim Sci
JT  - Journal of animal science
JID - 8003002
RN  - 0 (Lipids)
RN  - 0 (Proteins)
SB  - IM
MH  - Animals
MH  - Body Composition/*physiology
MH  - Body Water
MH  - Digestive System/chemistry
MH  - Kidney/chemistry
MH  - Lipids/analysis
MH  - Liver/chemistry
MH  - Lung/chemistry
MH  - Male
MH  - Pancreas/chemistry
MH  - Proteins/analysis
MH  - Random Allocation
MH  - Regression Analysis
MH  - Sheep/*physiology
MH  - Skin/chemistry
MH  - Spleen/chemistry
MH  - Trachea/chemistry
MH  - Weight Gain/*physiology
MH  - Weight Loss/*physiology
EDAT- 1994/12/01 00:00
MHDA- 1994/12/01 00:01
CRDT- 1994/12/01 00:00
PHST- 1994/12/01 00:00 [pubmed]
PHST- 1994/12/01 00:01 [medline]
PHST- 1994/12/01 00:00 [entrez]
AID - 10.2527/1994.72123098x [doi]
PST - ppublish
SO  - J Anim Sci. 1994 Dec;72(12):3098-109. doi: 10.2527/1994.72123098x.