精料水平和泌乳阶段对羊奶脂肪酸组成的影响

Q3 Agricultural and Biological Sciences Scientia Agriculturae Bohemica Pub Date : 2019-09-01 DOI:10.2478/sab-2019-0023

K. Novotná, M. Ptáček, M. Fantová, L. Nohejlová, L. Stádník, M. Okrouhlá, Z. Peták

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引用次数: 4

摘要

摘要测定了30只哺乳期努比亚山羊不同精料量和泌乳阶段对乳脂脂肪酸组成的影响。日粮包括中等质量的干草、放牧牧场和浓缩饲料（大麦泥、燕麦和甜菜浆，湿重比为1:1:1）。一半的山羊（A组）每天接受1.2公斤，而B组每天接受1.0公斤的浓缩物。哺乳期取奶样3次。哺乳期饱和脂肪酸（SFA）总量逐渐增加，而多不饱和脂肪酸和单不饱和脂肪酸酯（MUFA）含量下降。A组的SFA较低，但在所有3次采样中MUFA和PUFA的浓度较高。努比亚山羊喂食更多的浓缩物，其FA比率可能更适合牛奶和奶制品的消费者。

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Impact of Concentrate Level and Stage of Lactation on Fatty Acid Composition in Goat Milk

Abstract The impact of different amounts of concentrate and stage of lactation on fatty acid profile in milk fat was measured in 30 lactating Nubian goats. The ration included medium-quality hay, grazed pasture and concentrate feed (mashed barley, oats and beet pulp at 1:1:1 wet weight ratios). Half of the goats (group A) received 1.2 kg whereas group B received 1.0 kg of concentrate daily. Milk samples were taken 3 times during lactation. The total amounts of saturated fatty acids (SFA) increased gradually during lactation while polyunsaturated (PUFA) and monounsaturated fatty acids (MUFA) decreased. Group A had lower SFA but higher concentrations of MUFAs and PUFAs at all 3 samplings. Nubian goats fed more concentrate had FA ratios presumably more suitable for consumers of milk and milk products.

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