Impact of high-concentrate diets with cottonseed associated with calcium lignosulfonate on the metabolic, productive, and carcass characteristics of feedlot lambs

• Published in: Tropical animal health and production 2020-07, Vol.52 (4), p.1821-1832
• Main Authors: Cirne, Luís Gabriel Alves, de Carvalho, Gleidson Giordano Pinto, Viana, Pablo Teixeira, dos Santos Luz, Yann, da Silva Reis, Maria José, de Figueiredo, Mauro Pereira, de Assis Neto, Dallyson Yehudi Coura, Azêvedo, José Augusto Gomes, dos Santos Pina, Douglas, de Freitas Júnior, José Esler
• Format: Article
• Language: English
• Subjects: Animal Feed - analysis; Animals; Biomedical and Life Sciences; Blood Urea Nitrogen; Body weight gain; Calcium; Carbohydrates; Cottonseed Oil; Crushing; Diet; Diet - veterinary; Digestibility; Dry matter; Feedlots; Gossypium; Life Sciences; Lignin; Lignin - analogs & derivatives; Lignosulfonates; Male; Metabolism; Nitrogen; Nitrogen balance; Organic matter; Physical growth; Regular Articles; Seeds; Sheep; Sheep, Domestic - growth & development; Sheep, Domestic - metabolism; Sulfonation; Urea; Uric acid; Veterinary Medicine/Veterinary Science; Weight Gain; Zoology
• ISSN: 0049-4747; 1573-7438
• DOI: 10.1007/s11250-019-02194-5

This study aimed to evaluate the metabolic, productive, and carcass parameters of feedlot lambs fed high-concentrate diets with cottonseed associated with calcium lignosulfonate. Treatments consisted of diets including whole cottonseed, crushed cottonseed, whole cottonseed with lignosulfonate (100 g/kg), crushed cottonseed with lignosulfonate (100 g/kg), and a control diet without cottonseed. Thirty ½ Dorper ½ Santa Inês, non-castrated male lambs with an average live weight of 24.9 ± 3.6 kg and an average age of 3.5 months were evaluated in a completely randomized design. There was no effect ( P >  0.05) on the intakes of dry matter, organic matter, crude protein, and non-fibrous carbohydrates. The crushing of cottonseed and association with lignosulfonate increased ( P <  0.01) the intake and digestibility of ether extract. No effect was observed ( P >  0.05) for the concentrations of urine and plasma urea N, which averaged 616.2 and 108.6 mg/dL, respectively. There was a change ( P <  0.01) in nitrogen balance for digested N in g/day. There was no effect ( P >  0.05) on the urinary concentration of purine derivatives, except for uric acid excretions ( P <  0.05). Lignosulfonate associated with cottonseed provided an average daily gain of 0.293 kg/day, which was higher than the 0.226 kg/day obtained without lignosulfonate, but lower than control (0.302 kg/day), which also showed higher values of carcass yield. High-concentrate diets formulated without cottonseed improve lamb production performance. The use of high-concentrate diets with cottonseed associated with calcium lignosulfonate provides greater weight gains in lambs.