全芝麻膳食包涵量对山羊乳腺脂质代谢转录信号的影响

IF 1.6 3区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE Small Ruminant Research Pub Date : 2024-05-23 DOI:10.1016/j.smallrumres.2024.107294
Panagiota Kyriakaki, Alexandros Mavrommatis, Christina Mitsiopoulou, Eleni Tsiplakou
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引用次数: 0

摘要

芝麻是一种富含多不饱和脂肪酸 (PUFA) 的油籽,可以作为一种高效的动物饲料,为反刍动物的乳汁提供丰富的不饱和脂肪酸 (UFA)。然而,在反刍动物的日粮中添加油类和油籽会改变乳腺的脂质代谢,影响牛奶的化学成分。虽然这一问题在牛身上已有大量研究记录,但对小型反刍动物,尤其是山羊的研究数量有限。有鉴于此,我们将 24 只产奶期为 80 ± 10 天的山羊(体重 = 44.9 ± 5.4 千克)分成三个同质组(n = 8)。对照组(CON)饲喂饲料/精料比例为 50/50 的日粮,不喂芝麻;S5 和 S10 组则通过部分替代豆粕和玉米粒,分别在精料中添加 5% 和 10% 的全芝麻。在第 100 个实验日使用核心针活检取样乳腺组织。在 S10 组中观察到 COX4I1 和 AGPAT1 的基因表达明显增加(p < 0.05),而全芝麻添加组中没有任何基因的转录受到不利影响。总之,在山羊日粮中添加芝麻(最多占精料的 10%)对调节乳腺脂质代谢的转录谱的影响微乎其微。
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Effect of whole sesame seeds dietary inclusion levels on transcriptional signatures of lipid metabolism in mammary gland of goats

Sesame, a polyunsaturated fatty acid (PUFA)-rich oilseed, can be a highly efficient animal feed to enriched ruminants’ milk with unsaturated fatty acids (UFAs). However, oils and oilseeds inclusion in ruminants’ diets can modify lipid metabolism in the mammary gland and affect milk chemical composition. Although the topic has been well-documented in cattle, a limited number of studies are available in small ruminants, particularly in goats. Given that, twenty-four goats (BW = 44.9 ± 5.4 kg) at 80 ± 10 days in milk were split up into three homogeneous groups (n = 8). The control (CON) group was fed a diet with a Forage/Concentrate ratio = 50/50 with no sesame seeds, while the groups S5 and S10 included whole sesame seeds at a level of 5 % and 10 % of concentrates, respectively, by partially substituting both soybean meal and corn grain. Mammary tissues were sampled on the 100th experimental day using a core needle biopsy. Significant increases (p < 0.05) in the gene expression of COX4I1 and AGPAT1 were observed in the S10 group, while none of the gene’s transcription was adversely affected by the whole sesame seed inclusion. In conclusion, sesame seed inclusion in goats’ diet (up to 10 % of concentrate) has a negligible effect on the transcription profile regulating lipid metabolism in the mammary gland.

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来源期刊
Small Ruminant Research
Small Ruminant Research 农林科学-奶制品与动物科学
CiteScore
3.10
自引率
11.10%
发文量
210
审稿时长
12.5 weeks
期刊介绍: Small Ruminant Research publishes original, basic and applied research articles, technical notes, and review articles on research relating to goats, sheep, deer, the New World camelids llama, alpaca, vicuna and guanaco, and the Old World camels. Topics covered include nutrition, physiology, anatomy, genetics, microbiology, ethology, product technology, socio-economics, management, sustainability and environment, veterinary medicine and husbandry engineering.
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