Effects of Extruded Linseed and Soybean Dietary Supplementation on Lactation Performance, First-Service Conception Rate, and Mastitis Incidence in Holstein Dairy Cows

Abstract

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.

N-3 Polyunsaturated Fatty Acids as a Nutritional Support of the Reproductive and Immune System of Cattle—A Review

“…Protected fat can be fed in the form of oilseeds that have undergone previous thermal processes, most often extrusion and micronization. Heat treatment in the form of an extrusion process of, for example, flax seeds, with optimally selected parameters [64] can change the site of protein digestion from the rumen to the small intestine without adversely affecting total nutrient digestibility [61], thus contributing to a faster fat absorption process [65]. The addition of extruded flaxseed not only increases the energy concentration in the ration but contributes to improving reproductive rates in ruminant animals through the specific effects of n-3 fatty acids [66], as well as increasing the proportion of polyunsaturated fatty acids contained in the milk of cows [61].…”

Influence of Functional Feed Supplements on the Milk Production Efficiency, Feed Utilization, Blood Metabolites, and Health of Holstein Cows during Mid-Lactation

“…As a result, in recent decades, various countries-including Saudi Arabia-have encouraged the expansion and development of dairy production in order to fulfil increasing consumer demand [3,4]. However, various socioeconomic and environmental issues confront milk production strategies, including the risks linked with the use of growth promoters and antibiotics in livestock [5,6]. Such difficulties have inspired a worldwide search for natural feed supplements that can improve cow milk yields [7][8][9].…”

Влияние Строения Пектиновых Веществ Льняных Кормовых Добавок На Абсорбционное Связывание Азагетероциклических Микотоксинов

“…Выявленные закономерности получили воплощение в специализированных методах ферментативного модифицирования льняных материалов, используемых в композиции с высокопротеиновыми концентратами для обеспечения 85 %-ной устойчивости белковых веществ к расщеплению микрофлорой рубца [29]. Результаты согласуются с недавно опубликованными данными оценки эффективности ис-пользования льно-протеиновых кормовых добавок in vivo [30].…”