Effects of zilpaterol hydrochloride and soybean oil supplementation on feedlot performance and carcass characteristics of hair-breed ram lambs under heat stress conditions

2014 ◽  
Vol 92 (3) ◽  
pp. 1184-1192 ◽  
Author(s):  
J. L. Dávila-Ramírez ◽  
U. Macías-Cruz ◽  
N. G. Torrentera-Olivera ◽  
H. González-Ríos ◽  
S. A. Soto-Navarro ◽  
...  
Keyword(s):  
Heat Stress ◽  
Soybean Oil ◽  
Carcass Characteristics ◽  
Stress Conditions ◽  
Feedlot Performance ◽  
Zilpaterol Hydrochloride ◽  
Ram Lambs

Effect of zilpaterol hydrochloride on feedlot performance and carcass characteristics of ewe lambs during heat-stress conditions

2010 ◽  
Vol 50 (10) ◽  
pp. 983 ◽  
Author(s):  
U. Macías-Cruz ◽  
F. D. Álvarez-Valenzuela ◽  
N. G. Torrentera-Olivera ◽  
J. V. Velázquez-Morales ◽  
A. Correa-Calderón ◽  
...  
Keyword(s):  
Heat Stress ◽  
Carcass Characteristics ◽  
Basal Diet ◽  
Weather Conditions ◽  
Stress Conditions ◽  
Control Group ◽  
Hair Sheep ◽  
Feedlot Performance ◽  
Ewe Lambs ◽  
Zilpaterol Hydrochloride

The objective of the present study was to evaluate the effects of supplementation of zilpaterol hydrochloride (ZH) to the finishing diets on the feedlot performance and carcass characteristics of hair sheep ewe lambs during hot environmental conditions. Twenty Katahdin × Pelilbuey and Dorper × Pelibuey crossbred females with an average initial liveweight (LW) of 26.2 ± 0.83 kg were blocked by the initial LW, and assigned individually to 20 pens in a closed calf-rearing unit provided with fans. Treatments were (1) control group (basal diet without ZH) and (2) ZH group (basal diet plus 10 mg of ZH/ewe.day). Skin temperatures were measured each 2 days in five ewes by treatment; ambient weather conditions were recorded every day. After a 34-day feeding period, all ewes were slaughtered. Climatic variables during the study showed severe heat stress, with the average temperature–humidity index and temperature 85 units and 34.1°C, respectively. The skin temperature of belly and right flank was greater (P < 0.05) in ZH females than in control lambs. Ewe lambs fed ZH had feedlot performance, carcass length, shear force, body fat and skin percentage similar (P > 0.05) to control ewe lambs. With the exception of peritoneum and head (P < 0.05), all visceral organs had similar (P > 0.05) percentages between treatments. However, hot- and cool-carcass weights, dressing percentage, conformation and rib-eye area were greater (P < 0.05) for ewes supplemented with ZH. Likewise, the weight of hindquarter, legs and ribs expressed as a percentage of hot-carcass weight increased (P < 0.05) with ZH supplementation. Growth and deposition of excessive fat in hair-sheep ewe lambs were not improved with ZH supplementation under heat-stress conditions, whereas carcass-quality traits such as dressing and rib-eye area were increased.

1685 Effects of different levels of zilpaterol hydrochloride on feedlot performance and carcass characteristics of hair-breed ram lambs

2016 ◽  
Vol 94 (suppl_5) ◽  
pp. 821-821
Author(s):  
J. Cayetano de Jesús ◽  
R. Rojo-Rubio ◽  
H. Lee-Rangel ◽  
L. Avendaño-Reyes ◽  
U. Macias-Cruz ◽  
...  
Keyword(s):  
Carcass Characteristics ◽  
Feedlot Performance ◽  
Zilpaterol Hydrochloride ◽  
Ram Lambs ◽  
Different Levels

Impact of zilpaterol hydrochloride and soybean-oil supplementation on intramuscular fat, fatty acid profile and cholesterol concentration in the longissimus muscle of male hair lamb under moderate heat-stress conditions

2018 ◽  
Vol 58 (10) ◽  
pp. 1932 ◽  
Author(s):  
J. L. Dávila-Ramírez ◽  
L. Avendaño-Reyes ◽  
E. A. Peña-Ramos ◽  
T. Y. Islava-Lagarda ◽  
U. Macías-Cruz ◽  
...  
Keyword(s):  
Heat Stress ◽  
Fatty Acid ◽  
Soybean Oil ◽  
Negative Impact ◽  
Intramuscular Fat ◽  
Climatic Conditions ◽  
Stress Conditions ◽  
Cholesterol Concentration ◽  
Control Group ◽  
Zilpaterol Hydrochloride

Forty Dorper × Pelibuey crossbred male lambs (31.70 ± 2.30 kg, 4 months of age) were used to evaluate the effect of zilpaterol hydrochloride (ZH; 0 or 10 mg/lamb daily) and soybean-oil (SBO, 0 or 60 g/kg DM) supplementation on intramuscular fat, fatty acid (FA) profiles and cholesterol concentration of their meat. After 34 days, the animals were slaughtered, and their longissimus thoracis muscle was collected. The climatic conditions were of moderate heat stress (average temperature 35.7°C) during the study. Feedlot performance and carcass characteristics were not affected (P > 0.05) by ZH and SBO supplementation. The ZH treatment decreased the intramuscular fat content (by 30.4%), the amount of monounsaturated FA (by 3.5%) and the monounsaturated FA : saturated FA ratio (by 4.9%) compared with the control group. Supplementation with SBO decreased cis FA, C18:1 n-9c and C20:4 n-6, whereas the trans FA and cholesterol concentration increased. ZH use caused a decrease in body fat and intramuscular fat concentration. However, it caused a decrease in total monounsaturated fatty acids, which are among the healthiest fats in terms of the nutritional value of meat. Generally, principal changes in the lipid composition of hair lamb meat under heat-stress conditions were caused by SBO supplementation; however, they would have a minimal negative impact on human health.

Impact of sorting before feeding zilpaterol hydrochloride on feedlot performance and carcass characteristics of yearling steers1,2

2015 ◽  
Vol 93 (5) ◽  
pp. 2285-2296 ◽  
Author(s):  
F. H. Hilscher ◽  
E. M. Hussey ◽  
B. L. Nuttelman ◽  
D. B. Burken ◽  
W. A. Griffin ◽  
...  
Keyword(s):  
Carcass Characteristics ◽  
Feedlot Performance ◽  
Zilpaterol Hydrochloride

scholarly journals Effects of the association between whole cottonseed and calcium salts of fatty acids on nutrient intake, feedlot performance, and carcass characteristics of Bos indicus animals offered a high-concentrate diet

2021 ◽  
Author(s):  
Leonardo R. Müller ◽  
Daniel I C. G. Gouvêa ◽  
André F. Francischinelli ◽  
Guiherme D. A. Alvarenga ◽  
Pablo C Castagnino ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Soybean Oil ◽  
Feed Efficiency ◽  
Dry Matter ◽  
Bos Indicus ◽  
Carcass Characteristics ◽  
Dry Matter Intake ◽  
Feedlot Performance ◽  
Calcium Salts ◽  
Whole Cottonseed

Abstract This experiment evaluated the effects of feeding whole cottonseed (WC) and/or calcium salts of fatty acids (CSFA) on dry matter intake (DMI), performance, and carcass characteristics of Bos indicus animals receiving a high-concentrate diet during the finishing phase. On day 0, 96 Nellore bulls were blocked according to initial shrunk body weight (BW; 302 ± 26.7 kg) into group pens (4 animals/pen) and, within blocks, pens were randomly assigned to receive: 1) 15% of WC and 2% of CSFA [dry matter (DM) basis] of palm, cottonseed, and soybean oil (15WC; n = 6), 2) 10% of WC and 3% of CSFA (DM basis) of palm, cottonseed, and soybean oil (10WC; n = 6), 3) 5% of WC and 4% of CSFA (DM basis) of palm, cottonseed, and soybean oil (5WC; n = 6), and 4) 0% of WC and 5% of CSFA (DM basis) of palm, cottonseed, and soybean oil (0WC; n = 6). Diets were formulated to be isocaloric, isonitrogenous, and isolipidic. Experimental period lasted 108 days, whereas dry matter intake (DMI) was evaluated daily and blood samples and carcass measurements were obtained on days 0, 55, and 108 of the study. Upon slaughter on day 109, steaks were collected for determination of the chemical and fatty acid (FA) profile of the meat. No treatment effects (P ≥ 0.35) were observed on DMI, performance, average daily gain (ADG), carcass ultrasound measurements, and chemical variables of the steak. Nonetheless, including WC into the diets increased C12:0, C16:0, C16:1 trans-9, C17:0, C18:0, C18:1 cis-9, C18:2 cis-9,cis-12, C18:3 cis-9,cis-12,cis-15, saturated, and unsaturated FA intake (P &lt; 0.01). Moreover, adding WC increased DMI fluctuation and feed efficiency (P = 0.03), but decreased marbling (P ≤ 0.03). A treatment × day interaction was observed (P &lt; 0.01) for serum leptin concentration, as 10WC animals had greater leptin concentration on d 103 vs. other treatments (P &lt; 0.01). Regarding steak FA profile, WC addition into the diet increased C18:2 cis-7,trans-9 and C18:3 cis-9,cis-12,cis-15 (P &lt; 0.001), whereas saturated FA was quadratically affected (P = 0.02) and unsaturated FA was reduced for 15WC (P &lt; 0.04). In summary, increasing levels of CSFA into isolipidic finishing diets containing WC did not negatively impact feedlot performance, but reduced feed efficiency and increased marbling scores of Bos indicus bulls, demonstrating its feasibility as a technology to improve carcass traits of low-marbling animals.

Feedlot performance, carcass characteristics and meat quality of Nellore bulls and steers fed Zilpaterol hydrochloride

2019 ◽  
Vol 227 ◽  
pp. 166-174 ◽  
Author(s):  
C.F. Costa ◽  
A.L.C. Brichi ◽  
D.D. Millen ◽  
R.S. Goulart ◽  
I.C. Pereira ◽  
...  
Keyword(s):  
Meat Quality ◽  
Carcass Characteristics ◽  
Feedlot Performance ◽  
Zilpaterol Hydrochloride

Feedlot performance and carcass traits of hairbreed ewe lambs in response to zilpaterol hydrochloride and soybean oil supplementation

2015 ◽  
Vol 93 (6) ◽  
pp. 3189-3196 ◽  
Author(s):  
J. L. Dávila-Ramírez ◽  
U. Macías-Cruz ◽  
N. G. Torrentera-Olivera ◽  
H. González-Ríos ◽  
E. A. Peña-Ramos ◽  
...  
Keyword(s):  
Soybean Oil ◽  
Carcass Traits ◽  
Feedlot Performance ◽  
Ewe Lambs ◽  
Zilpaterol Hydrochloride
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