Effect of Dietary Supplementation with Lipids of Different Unsaturation Degree on Feed Efficiency and Milk Fatty Acid Profile in Dairy Sheep

Hervás, Gonzalo; Toral, Pablo G.; Badia, Antonella Della; Frutos, Pilar

doi:10.3390/ani11082476

Cited by 8 publications

(4 citation statements)

References 55 publications

(93 reference statements)

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“…In this study, it was observed that the levels of oil used did not affect the productive parameters in the sheep and their offspring, which was similar to other studies carried out on sheep in which different oils were used in the diets; in some cases, over 6% of the DM was offered [11,[33][34][35]. However, there are reports in sheep and goats in which levels greater than 6% of the DM of oil were added to the diet without generating changes in productive behavior [36,37], as observed in dairy sheep of the Spanish Assaf breed that had 6% soybean oil added to their diets; this was similar to what happened in this trial for hair sheep in a tropical region.…”

Section: Productive Behavior Of Sheep and Lambssupporting

confidence: 83%

Extra Virgin Olive Oil: Does It Modify Milk Composition of Hair Sheep?

et al. 2023

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The aim of this study was to determine the effect of olive oil addition on the production, chemical composition, and fatty acid profile of sheep’s milk. Twenty-four lactating ewes with a live weight of 34.6 ± 4.61 kg were used. The animals were randomly distributed into four treatments (n = 6) with dietary addition of 0%, 2%, 4%, and 6% (dry matter basis) olive oil for 45 days. Milk samples were taken every 7 days for fatty acid (FA) and chemical analyses. A decrease (p < 0.05) in dry matter and crude protein intake was observed with 4% oil inclusion. Milk production and milk components were similar between treatments. The kilograms of meat from weaned lambs linearly increased as the oil inclusion increased. Milk C4:0 to C17:0 decreased with 2% olive oil. The monounsaturated and polyunsaturated FA content in the milk increased with the oil inclusion. There was an increase in the milk’s linoleic acid, linolenic acid, and eicosapentaenoic acid content with 2% olive oil. Overall, the addition of 2% extra virgin olive oil is recommended to improve milk’s FA profile without negative effects on animal performance.

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Section: Productive Behavior Of Sheep and Lambssupporting

confidence: 83%

Extra Virgin Olive Oil: Does It Modify Milk Composition of Hair Sheep?

et al. 2023

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“…*signi cant differences in each column using chi-square analysisDiscussionSheep were fed fat sources to enhance the energy density of their diet. Many aspects of sheep production, especially reproductive performance, are affected by dietary fat supplementation(Hervás et al, 2021;Mirzaei-Alamouti et al, 2018). Total dry matter intake in this study met the recommendation of the NRC (NRC, 2007) which 970 g/head/day for pregnant ewes weighing ±20 kg.…”

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confidence: 59%

The initial study on the benefits of flushing with Lemuru fish oil as a source of DHA and EPA on the performance of reproductive parameters in Garut ewes

Nurlatifah,

Herdis,

Arifiantini

et al. 2023

Preprint

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This study aimed to evaluate and analyze the effects of a flushing diet containing DHA and EPA from Lemuru fish oil on the reproductive performance parameters of Garut ewes. Forty (n = 40) primiparous Garut ewes aged 12–14 months with a body weight of 28.92 ± 4.94 kg were assigned into four experimental treatment groups. The experimental diets contained roughage : concentrate (30:70%) designated as control concentrate (CNT), flushing concentrate with 6% palm oil (PO), flushing concentrate with 3% palm oil mixed with 3% lemuru oil as DHA and EPA sources (PFO), and flushing concentrate with the addition of 6% lemuru oil (FO). Treatment animals were fed two weeks before and after conception and parturition (8 weeks of total flushing treatment). The addition of fish oil at either 3% (PFO) or 6% (FO) resulted in significantly higher reproductive performance of ewes by increasing the litter size, as reflected by the birth of multiple kids (P < 0.05) compared to CNT and PO. Adding fish oil (PFO and FO) also maintains gestation, resulting in increased kid yield, especially in the FO treatment, which yields the highest kid yield (0% single kid birth). The male ration lamb was also higher with fish oil supplementation (PFO and PO) (P < 0.05). Supplementation with fish oil could also maintain progesterone levels during the gestation period and some biochemical blood parameters. This study showed that using Lemuru fish oil 6% (FO) with a concentration of 1.34% DHA and EPA overall led to significantly higher reproductive performance in Garut sheep.

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“…From this point on, the central theme of this work is to determine the change in milk's fatty acid profile due to the dietary content of different PUFA levels during the lactation stage [19]. However, studies in sheep [27][28][29] and cows [30] when fed diets high in LA showed no adverse changes in rumen microbial activity, milk yield, and milk composition.…”

Section: Discussionmentioning

confidence: 99%

Identifying the Influence of the Dietary Polyunsaturated Fatty Acid Content on Milk Quality Traits in Najdi Sheep at Different Stages of Lactation

Matar,

Abdelrahman,

Ayadi

et al. 2023

Applied Sciences

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The quality of milk is fundamental to producing safe milk and dairy products that are suitable for consumption. The objective of this study was to determine the influence that the content of dietary polyunsaturated fatty acids (PUFA) has on the total mixed ration (TMR) and lactation stage of milk’s composition and the fatty acid profile (FA) of the dairy Najdi breed. During the lactation period, 48 Najdi ewes used the following four treatments: traditional feed (TR) and three total mixed rations (TMR1, TMR2, and TMR3) with different PUFA content. Milk samples were taken from whole milk in the morning. The chemical composition and FA profile were analyzed. The results show that the ewes fed TMR1 with a PUFA content (25.20%) produced high-quality milk as they contained high levels of polyunsaturated fatty acids (PUSF), linoleic acid (LA), α-linolenic acid (ALA) and omega-3 (n3). On the other hand, the milk of ewes fed TMR2 with PUFA (15.06%) contained high levels of unsaturated fatty acids (USF) and monounsaturated fatty acids (MUFA) and had significantly reduced hypercholesterolemia (HFA). It can be concluded that milk fat, protein, and total solids in the milk of Najdi sheep increased as lactation progressed, while lactose remained constant. Furthermore, as lactation progressed, saturated fatty acids (SFA), stearic acids, and oleic acids (OA) increased while USF and MUFA decreased. TMR diets can directly benefit the producer and livestock by producing high-quality milk while reducing its economic value.

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Effect of Dietary Supplementation with Lipids of Different Unsaturation Degree on Feed Efficiency and Milk Fatty Acid Profile in Dairy Sheep

Cited by 8 publications

References 55 publications

Extra Virgin Olive Oil: Does It Modify Milk Composition of Hair Sheep?

Extra Virgin Olive Oil: Does It Modify Milk Composition of Hair Sheep?

The initial study on the benefits of flushing with Lemuru fish oil as a source of DHA and EPA on the performance of reproductive parameters in Garut ewes

Identifying the Influence of the Dietary Polyunsaturated Fatty Acid Content on Milk Quality Traits in Najdi Sheep at Different Stages of Lactation

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