Alobre Mohsen M, Abdelrahman Mutassim M, Alhidary Ibrahim A, Alharthi Abdulrahman S, Aljumaah Riyadh S
Department of Animal Production, Faculty of Food and Agriculture, King Saud University, Riyadh 11451, Saudi Arabia.
Research and Extension Authority, Dhamar P. O. Box 87148, Yemen.
Animals (Basel). 2021 Mar 11;11(3):777. doi: 10.3390/ani11030777.
This study investigated the effects of supplementing different levels of sunflower hulls (SFH) to the complete feed of late-gestation pregnant ewes on the nutritive and fatty acids profile of colostrum at three and 48 h postpartum. In this study, 24 primiparous lactating Naemi ewes were randomly selected at parturition from four dietary groups as follows: (1) C (control), total mixed ration (TMR; 0% SFH), (2) S12, TMR1 with 12% SFH (level 1), (3) S20, TMR2 with 20% SFH (level 2), and (4) S28, TMR3 with 28% SFH (level 3). The body condition scores were estimated 30 days prepartum. Colostrum samples were collected at three and 48 h postpartum to measure the nutritive values and fatty acids profiles. Data were analyzed as a complete randomized design with repeated measures and via Pearson's correlation and regression analyses. The results indicated a numerical correlation (R = 0.42; < 0.09) between the body condition score and both colostrum fat and total solids. SFH increased the colostrum fat % ( < 0.05), especially for S12 and S20, following a cubic trend. Additionally, the colostrum from S12 and S20 ewes had a higher proportion of unsaturated fatty acids (USFAs), omega3 and lower levels of saturated fatty acids (SFAs), other than margaric acid (C17) and stearic acid (C18), SFA/USFA, and omega 6/omega 3. Furthermore, the regression analysis of the fatty acid classes and indices indicated a quadratic relationship between the parameters and SFH levels. The results confirm that the inclusion of SFH at levels greater than 20% may have a negative effect on some fatty acid parameters as a result of the high lignin intake. In conclusion, up to 20% SFH can be used in a complete feed for pregnant ewes without negative effects on the colostrum fat content and fatty acids profiles.
本研究调查了在妊娠后期母羊的全价饲料中添加不同水平向日葵壳（SFH）对产后3小时和48小时初乳营养成分及脂肪酸谱的影响。在本研究中，从四个日粮组中随机选取24只初产哺乳的纳伊米母羊，分组如下：（1）C组（对照组），全混合日粮（TMR；0% SFH），（2）S12组，含12% SFH的TMR1（第1水平），（3）S20组，含20% SFH的TMR2（第2水平），（4）S28组，含28% SFH的TMR3（第3水平）。在产前30天评估体况评分。在产后3小时和48小时采集初乳样本，以测定营养价值和脂肪酸谱。数据采用重复测量的完全随机设计进行分析，并通过Pearson相关性和回归分析。结果表明，体况评分与初乳脂肪和总固体之间存在数值相关性（R = 0.42；P < 0.09）。SFH增加了初乳脂肪百分比（P < 0.05），尤其是S12组和S20组，呈三次方趋势。此外，S12组和S20组母羊的初乳中不饱和脂肪酸（USFAs）、ω-3比例较高，除十七烷酸（C17）和硬脂酸（C18）外，饱和脂肪酸（SFAs）水平较低，SFA/USFA和ω-6/ω-3也较低。此外，脂肪酸类别和指标的回归分析表明，这些参数与SFH水平之间存在二次关系。结果证实，由于木质素摄入量高，添加超过20%的SFH可能会对某些脂肪酸参数产生负面影响。总之，高达20%的SFH可用于母羊妊娠全价饲料中，而不会对初乳脂肪含量和脂肪酸谱产生负面影响。
