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

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 effec...

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Published in:Agriculture (Basel) 2020-06, Vol.10 (6), p.241
Main Authors: Cayetano-De-Jesus, Jorge Adalberto, Rojo-Rubio, Rolando, Grajales-Lagunes, Alicia, Avendaño-Reyes, Leonel, Macias-Cruz, Ulises, Gonzalez-del-Prado, Veronica, Olmedo-Juárez, Agustin, Chay-Canul, Alfonso, Roque-Jiménez, José Alejandro, Lee-Rangel, Héctor Aarón
Format: Article
Language:English
Subjects:
Animal care
Cathepsin B
Cattle
Color
Dosage
Dry matter
Experiments
Feeds
Hair
hair breeds
Humanitarianism
Laboratory animals
lamb performance
Livestock
Luminosity
Meat
Meat industry
Meat quality
Proteins
Supplements
zilpaterol hydrochloride
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Summary: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.
ISSN:2077-0472
2077-0472
DOI:10.3390/agriculture10060241