1
|
Elkin RG, El-Zenary AS, Bomberger R, Haile AB, Weaver EA, Ramachandran R, Harvatine KJ. Feeding laying hens docosa hexaenoic acid-rich microalgae oil at 40 g/kg diet causes hypotriglyceridemia, depresses egg production, and attenuates expression of key genes affecting hepatic triglyceride synthesis and secretion, but is rescued by dietary co-supplementation of high-oleic sunflower oil. Poult Sci 2022; 102:102318. [PMID: 36525748 PMCID: PMC9758496 DOI: 10.1016/j.psj.2022.102318] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 10/26/2022] [Accepted: 11/01/2022] [Indexed: 11/06/2022] Open
Abstract
The primary goal of this study was to investigate the effect of feeding White Leghorn hens graded levels of a docosahexaenoic acid (DHA)-rich microalgae oil (MAO) on productive performance and enrichment of eggs with very long-chain (VLC) omega-3 (n-3) polyunsaturated fatty acids (PUFA). Forty-nine-week-old hens (8 per diet) were fed the following diets for 28 d: 1) A corn-soybean meal-based diet with no supplemental oil (CON); 2) CON + 10 g/kg MAO; 3) CON + 20 g/kg MAO; 4) CON + 30 g/kg MAO; 5) CON + 40 g/kg MAO; 6) CON + 40 g/kg MAO + 20 g/kg high-oleic sunflower oil (HOSO); and 7) CON + 40 g/kg MAO + 40 g/kg HOSO. Diets 6 and 7 were included because we previously reported that co-feeding high-oleic acid oils with n-3 PUFA-containing oils attenuated egg yolk n-3 PUFA contents vs. feeding hens the n-3 oils alone. All data were collected on an individual hen basis. Egg VLC n-3 PUFA enrichment plateaued, in terms of statistical significance, at the 30 g/kg MAO level (266 mg/yolk). Hens fed 40 g/kg MAO had greatly attenuated measures of hen performance, marked liver enlargement, an altered ovarian follicle hierarchy, greatly lowered circulating triglyceride levels, and depressed hepatic expression of key genes involved in triglyceride synthesis and secretion. As compared to hens fed 40 g/kg MAO alone, feeding hens 40 g/kg MAO co-supplemented with HOSO (Diets 6 and 7) restored egg production, ovarian morphology, and all other measures of hen productive performance to CON levels, elevated plasma triglyceride levels, prevented liver enlargement, and increased the hepatic expression of key genes involved in triglyceride synthesis and secretion. In conclusion, MAO can greatly enrich hens' eggs with VLC n-3 PUFA, but its recommended dietary inclusion should not exceed 20 g/kg. This would allow for near-maximal yolk VLC n-3 PUFA enrichment without impairing hen productive performance, altering the ovarian follicle hierarchy or, based on the work of others, presumably imparting off-flavors in the egg.
Collapse
|
2
|
Zhu JJ, Luo J, Sun YT, Shi HB, Li J, Wu M, Yu K, Haile AB, Loor JJ. Short communication: Effect of inhibition of fatty acid synthase on triglyceride accumulation and effect on lipid metabolism genes in goat mammary epithelial cells. J Dairy Sci 2015; 98:3485-91. [PMID: 25726120 DOI: 10.3168/jds.2014-8202] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Accepted: 01/12/2015] [Indexed: 01/12/2023]
Abstract
The role of fatty acid synthase (FASN) on de novo fatty acid synthesis has been well established. In monogastrics, unlike acetyl-coenzyme A carboxylase, FASN is primarily controlled at the transcriptional level. However, no data exist on ruminant mammary cells evaluating effects of FASN knockdown on mRNA expression of lipogenic genes. Inhibition of FASN in mammary cells by C75-mediated interference, a synthetic inhibitor of FASN activity, and short hairpin RNA-mediated interference markedly reduced cellular triglyceride content at least in part by decreasing the expression of genes related to triglyceride synthesis (GPAT, AGPAT6, and DGAT2) and enhancing the expression of lipolysis-related genes (ATGL and HSL). Consistent with the markedly lower expression of genes related to lipid droplet formation and secretion (TIP47, ADFP, BTN1A1, and XDH), cellular lipid droplets also were reduced sharply after incubation with C75 or adenovirus-short-hairpin-RNA. The results underscored the essential role of FASN in the overall process of milk-fat formation in goat mammary epithelial cells.
Collapse
Affiliation(s)
- J J Zhu
- Shaanxi Key Laboratory of Molecular Biology for Agriculture, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P. R. China 712100
| | - J Luo
- Shaanxi Key Laboratory of Molecular Biology for Agriculture, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P. R. China 712100.
| | - Y T Sun
- Shaanxi Key Laboratory of Molecular Biology for Agriculture, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P. R. China 712100
| | - H B Shi
- Shaanxi Key Laboratory of Molecular Biology for Agriculture, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P. R. China 712100
| | - J Li
- Shaanxi Key Laboratory of Molecular Biology for Agriculture, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P. R. China 712100
| | - M Wu
- Shaanxi Key Laboratory of Molecular Biology for Agriculture, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P. R. China 712100
| | - K Yu
- Shaanxi Key Laboratory of Molecular Biology for Agriculture, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P. R. China 712100
| | - A B Haile
- Shaanxi Key Laboratory of Molecular Biology for Agriculture, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P. R. China 712100
| | - J J Loor
- Mammalian NutriPhysioGenomics, Department of Animal Sciences and Division of Nutritional Sciences, University of Illinois, Urbana 61801
| |
Collapse
|
3
|
Wang W, Luo J, Sun S, Xi L, Gao Q, Haile AB, Shi H, Zhang W, Shi H. The Effect of Season on Spermatozoa Motility, Plasma Membrane and Acrosome Integrity in Fresh and Frozen-Thawed Semen from Xinong Saanen Bucks. Reprod Domest Anim 2014; 50:23-8. [DOI: 10.1111/rda.12444] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Accepted: 09/19/2014] [Indexed: 11/29/2022]
Affiliation(s)
- W Wang
- Shaanxi Key Laboratory of Molecular Biology for Agriculture; College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi China
| | - J Luo
- Shaanxi Key Laboratory of Molecular Biology for Agriculture; College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi China
| | - S Sun
- Shaanxi Key Laboratory of Molecular Biology for Agriculture; College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi China
| | - L Xi
- Shaanxi Key Laboratory of Molecular Biology for Agriculture; College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi China
| | - Q Gao
- College of Animal Science and Technology; Tarim University; Alar Xinjiang China
| | - AB Haile
- Shaanxi Key Laboratory of Molecular Biology for Agriculture; College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi China
| | - H Shi
- Shaanxi Key Laboratory of Molecular Biology for Agriculture; College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi China
| | - W Zhang
- Shaanxi Key Laboratory of Molecular Biology for Agriculture; College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi China
| | - H Shi
- Shaanxi Key Laboratory of Molecular Biology for Agriculture; College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi China
| |
Collapse
|
4
|
Shi H, Shi H, Luo J, Wang W, Haile AB, Xu H, Li J. Establishment and characterization of a dairy goat mammary epithelial cell line with human telomerase (hT-MECs). Anim Sci J 2014; 85:735-43. [DOI: 10.1111/asj.12206] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Accepted: 01/14/2014] [Indexed: 12/18/2022]
Affiliation(s)
- Huaiping Shi
- College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi China
| | - Hengbo Shi
- College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi China
| | - Jun Luo
- College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi China
| | - Wei Wang
- College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi China
| | - Abiel B. Haile
- College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi China
| | - Huifen Xu
- College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi China
| | - Jun Li
- College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi China
| |
Collapse
|