Effects of Extruded Linseed and Soybean Dietary Supplementation on Lactation Performance, First-Service Conception Rate, and Mastitis Incidence in Holstein Dairy Cows
Ahmed Dawod,
Hamada Ahmed,
Reham Abou-Elkhair,
Hamed T. Elbaz,
Ayman E. Taha,
Ayman A. Swelum,
Ibrahim A. Alhidary,
Islam M. Saadeldin,
Muath Q. Al-Ghadi,
Hani A. Ba-Awadh,
Elsayed O. S. Hussein,
Adham A. Al-Sagheer
Affiliations
Ahmed Dawod
Husbandry and Animal Wealth Development Department, Faculty of Veterinary Medicine, University of Sadat City, Menoufia 32897, Egypt
Hamada Ahmed
Nutrition and Vet., Clinical Nutrition Department, Faculty of Veterinary Medicine, Damanhour University, Damanhour 22511, Egypt
Reham Abou-Elkhair
Nutrition and Clinical Nutrition Department, Faculty of Veterinary Medicine, University of Sadat City, Menoufia 32897, Egypt
Hamed T. Elbaz
Theriogenology Department, Faculty of Veterinary Medicine, University of Sadat City, Menofia 32897, Egypt
Ayman E. Taha
Department of Animal Husbandry and Animal Wealth Development, Faculty of Veterinary Medicine, Alexandria University, Behira, Rasheed, Edfina 22758, Egypt
Ayman A. Swelum
Department of Animal Production, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia
Ibrahim A. Alhidary
Department of Animal Production, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia
Islam M. Saadeldin
Department of Animal Production, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia
Muath Q. Al-Ghadi
Department of Zoology, College of Science, King Saud University, Riyadh 11461, Saudi Arabia
Hani A. Ba-Awadh
Department of Animal Production, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia
Elsayed O. S. Hussein
Department of Animal Production, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia
Adham A. Al-Sagheer
Animal Production Department, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt
This study quantifies the effects of extruded linseed and soybean (ELS) dietary supplementation on milk yield, composition, and fatty acid profiles, as well as first-service conception rate in Holstein dairy cows. Seventy-eight open Holstein dairy cows were divided into two groups: (1) a control, which received a basal diet; and (2) a test group, which received a basal diet supplemented with the ELS (650 g/kg of extruded linseed and 150 g/kg of extruded soybean) at a rate of 100 g/kg. In the ELS group, milk yield per day and solid not fat (SNF) yield increased by 3.26% and 0.88%, respectively, in relation to the control. Percentage milk fat decreased significantly by 1.4% in the ELS group when compared with the control. The ELS supplement resulted in a decrease in saturated fatty acids (SFAs) and an increase in monounsaturated (MUFAs) and polyunsaturated fatty acids (PUFAs) in milk. In conclusion, the supplementation of dairy cow feed with 100 g/kg of ELS increases milk yield and milk unsaturated fatty acids (especially MUFAs and PUFAs). ELS supplementation also causes a decrease in percentage fat and SFA levels but does not affect the first-service conception rate or the incidence rate of mastitis.
