Effect of lactation induction on milk production and composition,oxidative and antioxidant status,and biochemical variables |
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| Authors: | Willian Mauricio Radavelli Gabriela Campigotto Gustavo Machado Nathieli B. Bottari Guilherme Bochi Rafael N. Moresco Vera M Morsch Maria Rosa C. Schetinger Anderson Bianchi Matheus D. Baldissera Rogério Ferreira Aleksandro Schafer da Silva |
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| Affiliation: | 1.Department of Animal Science,Universidade do Estado de Santa Catarina (UDESC),Chapecó,Brazil;2.Laboratory of Veterinary Epidemiology,Universidade Federal do Rio Grande do Sul (UFRGS),Porto Alegre,Brazil;3.Department of Biochemistry and Molecular Biology,Universidade Federal de Santa Maria (UFSM),Santa Maria,Brazil;4.Department of Clinical Analysis,UFSM,Santa Maria,Brazil;5.Department of Animal Science,Universidade Federal do Paraná (UFPR),Curitiba,Brazil;6.Department of Microbiology and Parasitology,UFSM,Santa Maria,Brazil |
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| Abstract: | This study aimed to induce lactation in Lacaune sheep and to verify its influence on milk production and composition, oxidative/antioxidant profile, and biochemical variables in serum and milk. A group of ewes (group A, n?=?7) was induced with estradiol (0.5 mg/kg body weight (BW)) and progesterone (1.25 mg/kg BW) on days 1 to 7, bovine somatotropin (BST; 250 mg/animal) on days 11 and 40, as well as dexamethasone (16 mg/day) on days 19, 20, and 21. For comparison, another group of pregnant ewes was used as control (group B, n?=?5). Blood and milk samples were collected for biochemical analysis, oxidative/antioxidant profile analysis, and determination of individual volume and chemical composition. The hormonal protocol was effective to induce lactation; however, milk production was 79 % lower than the control group. Milk fat, protein, and total solids were significantly lower (p?
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