Feeding calcium soaps of fatty acids to lactating cows: effect on production, body condition and blood lipids.
Ca soaps of fatty acids (CSFA, 0.5 kg/d) were added to the diet of lactating cows for 170 d, and production, body condition score and blood lipids were examined. Production of fat-corrected milk was increased by 1.5 kg/d owing to increase in both milk and fat production. Over 250 d lactation, production of fat-corrected milk was enhanced by 1.3 kg/d. Body condition scores were lower in cows fed CSFA in early lactation, but tended to exceed those of control cows after 80 d lactation. Reproductive performance was improved in cows fed CSFA. Serum total lipids, phospholipids and cholesterol were increased in CSFA cows at 15 and 29 d but not at 59 d post partum. The cholesterol increase was mainly in the high density lipoprotein fraction.
Sklan
D
D
Faculty of Agriculture, Hebrew University, Rehovot, Israel.
Bogin
E
E
Avidar
Y
Y
Gur-Arie
S
S
D000704:Analysis of Variance; D000818:Animals; D002417:Cattle / Q000097:blood / Q000378:metabolism / Q000502:physiology*; D002784:Cholesterol / Q000097:blood; D004041:Dietary Fats / Q000008:administration & dosage / Q000378:metabolism; D005227:Fatty Acids / Q000008:administration & dosage* / Q000378:metabolism; D005260:Female; D005298:Fertility; D007774:Lactation; D016018:Least-Squares Analysis; D016014:Linear Models; D008055:Lipids / Q000097:blood*; D010743:Phospholipids / Q000097:blood; D011247:Pregnancy
D004041:Dietary Fats; D005227:Fatty Acids; D008055:Lipids; D010743:Phospholipids; D002784:Cholesterol