Effect of zilpaterol hydrochloride on feedlot performance and carcass characteristics of ewe lambs during heat-stress conditions
U. Macías-Cruz A , F. D. Álvarez-Valenzuela A , N. G. Torrentera-Olivera A , J. V. Velázquez-Morales A , A. Correa-Calderón A , P. H. Robinson B and L. Avendaño-Reyes A CA Instituto de Ciencias Agrícolas, Universidad Autónoma de Baja California, Ejido Nuevo León, Valle de Mexicali, Baja California, 21705, México.
B Department of Animal Science, University of California, Davis, CA 95616-8521, USA.
C Corresponding author. Email: lar62@hotmail.com
Animal Production Science 50(10) 983-989 https://doi.org/10.1071/AN10094
Submitted: 15 June 2010 Accepted: 10 August 2010 Published: 21 October 2010
Abstract
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.
Additional keywords: β-agonist, female lambs, hair sheep breeds, zilmax.
Aguilera-Soto JI,
Ramírez RG,
Arechiga CF,
Méndez-Llorente F,
López-Carlos MA,
Silva-Ramos JM,
Rincon-Delgado RM, Duran-Roldan FM
(2008) Zilpaterol hydrochloride on performance and sperm quality of lambs fed wet brewers grains. Journal of Applied Animal Research 34, 17–21.
|
CAS |
Avendaño RL,
Álvarez VFD,
Correa CA,
Saucedo QJS,
Rivera AF,
Verdugo ZFJ,
Aréchiga FCF, Robinson PH
(2007) Evaluation of a cooling system used in the dry period of dairy cattle in summer. Técnica Pecuaria en México 45, 209–225.
Avendaño-Reyes L,
Torres-Rodríguez V,
Meraz-Murillo FJ,
Pérez-Linares C,
Figueroa-Saavedra F, Robinson PH
(2006) Effects of two β-adrenergic agonists on finishing performance, carcass characteristics and meat quality of feedlot steers. Journal of Animal Science 84, 3259–3265.
| Crossref | GoogleScholarGoogle Scholar | PubMed |
Beckett JL,
Delmore RJ,
Duff GC,
Yates DA,
Allen DM,
Lawrence TE, Elam N
(2009) Effects of zilpaterol hydrochloride on growth rates, feed conversion, and carcass traits in calf-fed Holstein steers. Journal of Animal Science 87, 4092–4100.
| Crossref | GoogleScholarGoogle Scholar |
CAS |
PubMed |
Beermann DH,
Hogue DE,
Fishell VK,
Dalrymple RH, Ricks CA
(1986) Effects of cimaterol and fishmeal on performance, carcass characteristics and skeletal muscle growth in lambs. Journal of Animal Science 62, 370–380.
|
CAS |
Bores QRF,
Velázquez MPA, Heredia AM
(2002) Evaluation of terminal breed in commercial breeding schemes with F1 hair sheep. Técnica Pecuaria en México 40, 71–79.
Courtheyn D,
Le Bizec B,
Brambilla G,
De Brabander HF,
Cobbaert E,
Van de Wiele M,
Vercammen J, De Wasch K
(2002) Recent developments in the use and abuse of growth promoters. Analytica Chimica Acta 473, 71–82.
| Crossref | GoogleScholarGoogle Scholar |
CAS |
Darcan N, Güney O
(2008) Alleviation of climatic stress of dairy goats in Mediterranean climate. Small Ruminant Research 74, 212–215.
| Crossref | GoogleScholarGoogle Scholar |
Dikeman ME
(2007) Effects of metabolic modifiers on carcass traits and meat quality. Meat Science 77, 121–135.
| Crossref | GoogleScholarGoogle Scholar |
CAS |
Dixon RM,
Thomas R, Holmes JHG
(1999) Interactions between heat stress and nutrition in sheep fed roughage diets. Journal of Agricultural Science 132, 351–359.
| Crossref | GoogleScholarGoogle Scholar |
Dunshea FR,
D’Souza DN,
Pethick DW,
Harper GS, Warner RD
(2005) Effect of dietary factors and other metabolic modifiers on quality and nutritional value of meat. Meat Science 71, 8–38.
| Crossref | GoogleScholarGoogle Scholar |
CAS |
Ekpe ED,
Moibi JA, Christopherson RJ
(2000) Effects of temperature and plane of nutrition on beta-adrenergic receptors in heart, kidney, and liver of lambs. Journal of Animal Science 78, 1907–1916.
|
CAS |
PubMed |
Estrada-Angulo A,
Barrera-Serrano A,
Contreras G,
Obregon JF,
Robles-Estrada JC,
Plascencia A, Zinn RA
(2008) Influence of level of zilpaterol chlorhydrate supplementation on growth performance and carcass characteristics of feedlot lambs. Small Ruminant Research 80, 107–110.
| Crossref | GoogleScholarGoogle Scholar |
Fiems LO,
Boucqué CV,
Van Cottyn BG, De Voorde G
(1991) Effect of dietary cimaterol on performance and carcass traits in bulls and on aspects of digestion in cattle and sheep. Annales de Zootechnie 40, 191–200.
| Crossref | GoogleScholarGoogle Scholar |
CAS |
Fuquay JW
(1981) Heat stress as is affects animal production. Journal of Animal Science 52, 164–174.
|
CAS |
PubMed |
Gruber SL,
Tatum JD,
Engle TE,
Prusa KJ,
Laudert SB,
Schroeder AL, Platter WJ
(2008) Effect of ractopamine supplementation and post-mortem aging on longissimus muscle palatability of beef steers differing in biological type. Journal of Animal Science 86, 205–210.
| Crossref | GoogleScholarGoogle Scholar |
CAS |
PubMed |
Hahn GL
(1999) Dynamic responses of cattle to thermal heat loads. Journal of Dairy Science 82(Suppl. 2), 10–20.
| Crossref |
Leheska JM,
Montgomery JL,
Krehbiel CR,
Yates DA,
Hutcheson JP,
Nichols WT,
Streeter M,
Blanton JR, Miller MF
(2009) Dietary zilpaterol hydrochloride. II. Carcass composition and meat palatability of beef cattle. Journal of Animal Science 87, 1384–1393.
| Crossref | GoogleScholarGoogle Scholar |
CAS |
PubMed |
Li YZ,
Christopherson RJ,
Li BT, Moibi JA
(2000) Effects of a beta-adrenergic agonist (L-644,969) on performance and carcass traits of growing lambs in a cold environment. Canadian Journal of Animal Science 80, 459–465.
| Crossref | GoogleScholarGoogle Scholar |
CAS |
López-Carlos MA,
Ramírez RG,
Aguilera-Soto JI,
Aréchiga CF,
Méndez-Llorente F,
Rodríguez H, Silva JM
(2010) Effect of ractopamine hydrochloride and zilpaterol hydrochloride on growth, diet digestibility, intake and carcass characteristics of feedlot lambs. Livestock Science 131, 23–30.
| Crossref | GoogleScholarGoogle Scholar |
Marai IFM,
El-Darawany AA,
Fadiel A, Abdel-Hafez MAM
(2007) Physiological traits as affected by heat stress in sheep – A review. Small Ruminant Research 71, 1–12.
| Crossref | GoogleScholarGoogle Scholar |
Martello LS,
Savastano JH,
Silva SL, Balieiro JCC
(2009) Alternative body sites for heat stress measurement in milking cows under tropical conditions and their relationship to the thermal discomfort of the animals. International Journal of Biometeorology in press. ,
| Crossref | GoogleScholarGoogle Scholar | PubMed |
McManus C,
Paludo GR,
Louvandini H,
Gugel R,
Bastos SLC, Rezende PS
(2009) Heat tolerance in Brazilian sheep: physiological and blood parameters. Tropical Animal Health and Production 41, 95–101.
| Crossref | GoogleScholarGoogle Scholar | PubMed |
Mersmann HJ
(1998) Overview of the effects of beta-adrenergic receptor agonists on animal growth including mechanisms of action. Journal of Animal Science 76, 160–172.
|
CAS |
PubMed |
Montgomery JL,
Krehbiel CR,
Cranston JJ,
Yates DA, Hutcheson JP ,
et al
.
(2009) Dietary zilpaterol hydrochloride. I. Feedlot performance and carcass traits of steers and heifers. Journal of Animal Science 87, 1374–1383.
| Crossref | GoogleScholarGoogle Scholar |
CAS |
PubMed |
Neill S,
Unruh JA,
Marston TT,
Jaeger JR,
Hunt MC, Higgins JJ
(2009) Effects of implanting and feeding zilpaterol hydrochloride on performance, carcass characteristics, and subprimal beef yield of fed cows. Journal of Animal Science 87, 704–710.
| Crossref | GoogleScholarGoogle Scholar |
CAS |
PubMed |
Nourozi M,
Abazari M,
Raisianzadeh M,
Mohammadi M, ZareShahne A
(2008) Effect of terbutaline and metaproterenol (two beta-agonists) on performance and carcass composition of culled Moghani ewes. Small Ruminant Research 74, 72–77.
| Crossref | GoogleScholarGoogle Scholar |
Plascencia A,
Torrentera NG, Zin RA
(2008) Influence of the β-agonist, zilpaterol, on growth performance and carcass characteristics of feedlot steers. Journal of Animal and Veterinary Advances 7, 1257–1260.
|
CAS |
Reeds PJ, Mersmann HJ
(1991) Protein and energy requirements of animals treated with beta-adrenergic agonists: a discussion. Journal of Animal Science 69, 1532–1550.
|
CAS |
PubMed |
Robles-Estrada JC,
Barreras-Serrano A,
Contreras G,
Estrada-Angulo A,
Obregón JF,
Plasencia A, Ríos FG
(2009) Effect of two β-adrenergic agonists on finishing performance and carcass characteristics in lambs fed all-concentrate diets. Journal of Applied Animal Research 36, 33–36.
|
CAS |
Shackelford SD,
Edwards JW,
Smarr EK, Savell JW
(1992) Retail cut yields of Rambouillet weter lambs fed the beta-adrenergic agonist L644,969. Journal of Animal Science 70, 161–168.
|
CAS |
PubMed |
Shook JN,
VanOverbeke DL,
Kinman LA,
Krehbiel CR,
Holland BP,
Streeter MN,
Yates DA, Hilton GC
(2009) Effects of zilpaterol hydrochloride and zilpaterol hydrochloride withdrawal time on beef carcass cutability, composition, and tenderness. Journal of Animal Science 87, 3677–3685.
| Crossref | GoogleScholarGoogle Scholar |
CAS |
PubMed |
Vestergaard M,
Sejrsen K, Klastrup S
(1994) Growth, composition and eating quality of longissimus dorsi from young bulls fed the beta-agonist cimaterol at consecutive developmental stages. Meat Science 38, 55–66.
| Crossref | GoogleScholarGoogle Scholar |
CAS |
Walker CE, Drouillard JS
(2010) Effects of ractopamine hydrochloride are not confined to mammalian tissue: evidence for direct effects of ractopamine hydrochloride supplementation on fermentation by ruminal microorganisms. Journal of Animal Science 88, 697–706.
| Crossref | GoogleScholarGoogle Scholar |
CAS |
PubMed |
