Effect of betaine supplementation on quantity and quality of colostrum and on circulating blood metabolites in Sanjabi pregnant ewes
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Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
Betaine is a methyl group donor that can affect important physiological processes involed with hemocyctein such as lactation. In the present study, the effect of betaine supplementation on concentrations of some blood metabolites, and on quantity of colostrum in pregnant ewes was investigated. Twenty multiparous pregnant Sanjabi ewes were fed either a basal diet (Control: 71.2±3.6 kg BW) or the basal diet supplemented with 5 g per kg dry matter betaine (Betaine: 71.6±3.8 kg BW) during the last month of gestation. Feed intake, body condition score, udder volume, and circulating concentration of glucose, beta-hydroxybutyrate, albumin, total protein, urea and homocysteine were determined during the last month prepartum. The quantity of colostrum was measured in two times with oxytocin ingection until six hours post- partum, and then was analysed for its chemical composions. The dry matter intake, body condition score, and udder volume of ewes in both Control and Betaine were similar. Quantity of colostrum (593 vs. 365 g) and fat (93 vs. 59 g), and blood concentration of hemocystein (8.4 vs. 8.1 µmol/L) in ewes receiving betaine was greater (P <0.05) than those in Control. Ewes in Betaine had a tendency towards lower circulating concentration of glucose (3.2 vs. 3.4 mmol/L, P=0.098), and beta-hydroxybutyrate concentration (0.46 vs. 0.82 mmol/L, P=0.059) than control ewes. In conclusion, dietary supplementation of betaine increased quantilty and fat content of colostrum, increased circulating hemocystein, and reduced circulating ketone bodies most likely via suppresing fatty acid oxidation in Sanjabi pregnant ewes.
Language:
Persian
Published:
Animal Sciences Journal, Volume:31 Issue: 121, 2019
Pages:
231 to 240
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