Effects of selenium supply and dietary restriction on maternal and fetal body weight, visceral organ mass and cellularity estimates, and jejunal vascularity in pregnant ewe lambs1

2007 ◽  
Vol 85 (10) ◽  
pp. 2721-2733 ◽  
Author(s):  
J. J. Reed ◽  
M. A. Ward ◽  
K. A. Vonnahme ◽  
T. L. Neville ◽  
S. L. Julius ◽  
...  
2008 ◽  
Vol 86 (4) ◽  
pp. 890-901 ◽  
Author(s):  
T. L. Neville ◽  
M. A. Ward ◽  
J. J. Reed ◽  
S. A. Soto-Navarro ◽  
S. L. Julius ◽  
...  

2013 ◽  
Vol 91 (5) ◽  
pp. 2355-2366 ◽  
Author(s):  
E. D. Sharman ◽  
P. A. Lancaster ◽  
C. P. McMurphy ◽  
G. G. Mafi ◽  
J. D. Starkey ◽  
...  

2001 ◽  
Vol 79 (9) ◽  
pp. 2481 ◽  
Author(s):  
A N Scheaffer ◽  
J S Caton ◽  
M L Bauer ◽  
L P Reynolds

2008 ◽  
Vol 86 (5) ◽  
pp. 1254-1262 ◽  
Author(s):  
M. A. Ward ◽  
T. L. Neville ◽  
J. J. Reed ◽  
J. B. Taylor ◽  
D. M. Hallford ◽  
...  

2017 ◽  
Vol 38 (2) ◽  
pp. 855 ◽  
Author(s):  
Daiane De Oliveira Grieser ◽  
Simara Márcia Marcato ◽  
Mariana Fátima Zanon Ferreira ◽  
Taciana Maria de Oliveira-Bruxel ◽  
Vittor Zancanela ◽  
...  

This study aimed to assess the effect of quantitative dietary restriction during refeeding on the performance, body chemical composition, and deposition, weight gain of organs and carcass parts of quails reared for meat (Coturnix coturnix coturnix). A total of 144 quails, between 11 to 42 days old, were distributed in a completely randomized design, 4x2 factorial scheme, at four levels of feed restriction (ad libitum, 30%, 50% and 70% restrictions on the daily intake ad libitum) for both genders. Therefore, there was eight treatments with three replicates and six birds each. At the tenth day of age, the animals were housed in cages, where remained for four days under adaptation. Dietary restriction was applied between the days 15 and 35 while refeeding was carried out from day 36 to 42. Compensatory weight gain (CWG), i.e. weight gain of organs and carcass parts, and feed efficiency (FE) were improved for quails under feed restriction. Fat (F), crude protein (CP), protein deposition rate (PDR) and fat in females (FDf) and carcass retained energy in females (CREf) increased linearly as restriction levels decreased. Maximum estimates of feed intake for males (MFIm), compensatory weight gain for males (CWGm) and females (CWGf), feed efficiency for males (FEm), protein deposition for males (PDm) and carcass retained energy in males (CREm) were obtained with restriction levels of 43.56%, 30.56%, 63.93%, 62.63%, 80.25%, 1.94% and 09.34% if compared to ad libitum, respectively. As a result, we concluded that according to quantitative feed restriction level, significant increases in feed efficiency and body weight gain, as well as decreases in carcass fat throughout quail refeeding period. As for gender, given the existing sexual dimorphism, females lost greater body weight than males under dietary restriction, besides showing higher protein and fat gains in the carcass and an enhanced feed efficiency during refeeding.


2013 ◽  
Vol 53 (4) ◽  
pp. 308 ◽  
Author(s):  
A. Estrada-Angulo ◽  
Y. S. Valdés ◽  
O. Carrillo-Muro ◽  
B. I. Castro-Perez ◽  
A. Barreras ◽  
...  

Forty Pelibuey × Kathdin lambs (35.5 ± 0.4 kg) were used in a 56-day feeding experiment to assess the effects of feeding different levels of chromium-enriched live yeast (Cr-YC) on growth performance, dietary energetics, carcass traits and visceral organ mass. The Cr-YC source contained 5.5 × 109 colony forming units (CFU) and 0.40 mg of Cr per gram. Treatments consisted of a dry rolled corn-based finishing diet supplemented with 0, 1, 2 or 3 g Cr-YC/lamb.day. Total daily dosages were: 5.5 × 109 CFU and 0.4 mg; 1.1 × 1010 CFU and 0.8 mg Cr, and 1.65 × 1010 CFU and 1.2 mg Cr for supplementation levels of 1, 2 or 3 g Cr-YC/lamb.day, respectively. There were no treatments effects on dry matter intake. As the level of Cr-YC supplementation increased, average daily gain, gain to feed and dietary net energy were linearly increased, and observed/expected dry matter intake was linearly decreased. Chromium-enriched live yeast supplementation increased empty bodyweight (EBW), gastrointestinal fill and full viscera weight, but did not influence organ weights as a proportion of EBW (g/kg EBW). Cr-YC level did not affect carcass length, backfat thickness, kidney, pelvic and heart fat or body wall thickness, but increased hot carcass weight and longissimus muscle area. In general, treatment effects on percentage yield of wholesale cuts (tissue weight as a percentage of cold carcass weight) were small. However, Cr-YC decreased percentage flank. Chromium-enriched yeast supplementation enhances growth rate, longissimus muscle area, and dietary energetic efficiency in finishing feedlot lambs.


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