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Open AccessArticle

Effect of Zilpaterol Hydrochloride on Performance and Meat Quality in Finishing Lambs

Facultad de Agronomía y Veterinaria, Universidad Autónoma de San Luis Potosí, SanLuis Potosi 78000, Mexico
Centro Universitario UAEM Temascaltepec, Universidad Autónoma del Estado de México, Temascaltepec 513000, Mexico
Facultad de Ciencias Quimicas, Universidad Autónoma de San Luis Potosí, San Luis Potosi 78000, Mexico
Instituto de Ciencias Agrícolas, Universidad Autónoma de Baja California, Mexicali 21705, B.C., Mexico
Centro Nacional de Investigación Disciplinaria en Parasitología Veterinaria, Progreso 97320, Mexico
División Académica de Ciencias Agropecuarias, Universidad Juárez Autónoma de Tabasco, Villahermosa 86280, Mexico
Author to whom correspondence should be addressed.
Agriculture 2020, 10(6), 241;
Received: 15 May 2020 / Revised: 16 June 2020 / Accepted: 18 June 2020 / Published: 22 June 2020
(This article belongs to the Special Issue Farm Animal Nutrition Approaches in a Changing Environment)
Twenty-four Dorper x Pelibuey lambs were housed in individual pens during a 31-d feeding period and assigned to four treatments (n = 6) under a randomized complete block design with different daily doses of zilpaterol hydrochloride (ZH): 0 (control), 0.1, 0.2, and 0.3 mg/kg BW to determine the effects of ZH supplementation on productive performance, meat quality, and wholesale cut yields. Final BW (p = 0.02) and average daily gain (ADG, p = 0.04) were greater in lambs supplemented with 0.2 mg/kg BW. Supplemental ZH tended to improve dry matter intake (DMI, p = 0.008) and ADG:DMI ratio (p = 0.078). Wholesale cut yields were not affected by ZH supplementation. Percentage of head was greater (p = 0.04) in lambs treated with ZH. The ZH supplementation did not affect carcass characteristics. However, longissimus thoracis et lumborum (LTL) presented a linear trend (p = 0.08) of increasing with ZH supplementation. Percentage of blood presented a trend (p = 0.051) of decreasing with ZH supplementation. Also, liver decreased in size (p < 0.05) for treatments where ZH was included. Values of luminosity decreased (p < 0.02) when ZH dosage increased. The value of protein Lowry was greater, with 0.3 mg kg−1 (p = 0.04). Cathepsin B + L was greater in the lambs from the control treatment (p = 0.05). In conclusion, using a daily ZH dosage of 0.2 mg per kg of BW produced the best productive performance, carcass characteristics, and some changes in the meat of hair-breed lambs. View Full-Text
Keywords: zilpaterol hydrochloride; meat quality; hair breeds; lamb performance zilpaterol hydrochloride; meat quality; hair breeds; lamb performance
MDPI and ACS Style

Cayetano-De-Jesus, J.A.; Rojo-Rubio, R.; Grajales-Lagunes, A.; Avendaño-Reyes, L.; Macias-Cruz, U.; Gonzalez-del-Prado, V.; Olmedo-Juárez, A.; Chay-Canul, A.; Roque-Jiménez, J.A.; Lee-Rangel, H.A. Effect of Zilpaterol Hydrochloride on Performance and Meat Quality in Finishing Lambs. Agriculture 2020, 10, 241.

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