EXHIBIT 99.1

Contact:

Fred Adams, Jr.

Chairman and CEO

(601) 948-6813

CAL-MAINE FOODS, INC. REPORTS SECOND QUARTER FISCAL 2010 RESULTS

JACKSON, Miss. (December 28, 2009) ¾ Cal-Maine Foods, Inc. (NASDAQ: CALM) today announced results for the second quarter and six months ended November 28, 2009.

Net sales for the second quarter of fiscal 2010 were $229.2 million compared with net sales of $238.3 million for the same quarter of fiscal 2009. The Company reported net income of $16.1 million, or $0.68 per basic share, for the second quarter of fiscal 2010 compared with net income of $27.2 million, or $1.15 per basic share, for the second quarter of fiscal 2009.

For the first six months of fiscal 2010, net sales were $416.9 million compared with net sales of $445.2 million for the prior-year period. The Company reported net income of $12.3 million, or $0.52 per basic share, for the first half of fiscal 2010 compared with net income of $38.4 million, or $1.62 per basic share, for the year-earlier period.

Fred Adams, Jr., chairman and chief executive officer of Cal-Maine Foods, Inc., stated, “We are pleased with Cal-Maine’s results for the second quarter of fiscal 2010. The supply and demand for eggs were well balanced and sales at the retail level were very good. However, food service and restaurant sales continued to be slow, reflecting economic trends, and egg product sales were down about two percent. Our feed costs were down for the quarter, which improved our profitability. Our management team did a good job and all of our operations have been running smoothly.

“Looking ahead, we continue to see a favorable balance between egg supply and egg demand. However, while better than a year ago, feed costs will continue to be volatile and relatively high,” added Adams.

For the second quarter of fiscal 2010, Cal-Maine will pay a cash dividend of approximately $0.172 per share to holders of its common and Class A common stock. The amount paid could vary slightly based on the amount of outstanding shares on the record date. The dividend is payable February 11, 2010, to shareholders of record on January 27, 2010.

Selected operating statistics for the second quarter of fiscal 2010 compared with the prior year period are shown below:

	13 Weeks Ended						26 Weeks Ended
	November 28, 2009			November 29, 2008			November 28, 2009			November 29, 2008
Dozen Eggs Sold (000)		206,251			185,193			399,298			355,844
Dozen Eggs Produced (000)		164,647			142,868			320,790			276,510

% Specialty Sales (dozen)		13.7	%		14.2	%		13.4	%		13.5	%

Net Average Selling Price (dozen)	$	1.057		$	1.209		$	0.992		$	1.173
Feed Cost (Dozen)	$	0.347		$	0.385		$	0.352		$	0.417

% Specialty Sales		20.5	%		18.1	%		21.4	%		17.7	%

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CAL-MAINE FOODS, INC.	POST OFFICE BOX 2960 ▪	JACKSON, MISSISSIPPI 39207
	PHONE 601-948-6813	FAX 601-969-0905

Cal-Maine Foods, Inc. is primarily engaged in the production, grading, packing and sale of fresh shell eggs. The Company, which is headquartered in Jackson, Mississippi, currently is the largest producer and distributor of fresh shell eggs in the United States and sells the majority of its shell eggs in approximately 29 states across the southwestern, southeastern, mid-western and mid-Atlantic regions of the United States.

Statements contained in this press release that are not historical facts are forward-looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. Such forward-looking statements are subject to risks and uncertainties (contained in the Company’s SEC filings) that could cause actual results to differ materially from those projected. SEC filings may be obtained from the SEC or by contacting the Company.

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CAL-MAINE FOODS, INC.	POST OFFICE BOX 2960 ▪	JACKSON, MISSISSIPPI 39207
	PHONE 601-948-6813	FAX 601-969-0905

	November 28, 2009		May 30, 2009
ASSETS
Cash and short-term investments	$	151,717	$	82,048
Receivables		79,730		44,628
Inventories		98,565		97,535
Other		4,270		17,474
Current assets		334,282		241,685

Property, plant and equipment (net)		238,726		249,958
Other assets		57,163		91,202
Total assets	$	630,171	$	582,845

LIABILITIES AND SHAREHOLDERS' EQUITY
Accounts payable and accrued expenses	$	86,090	$	61,845
Other current liabilities		—		8,400
Current maturities of long-term debt		39,485		13,806
Deferred income taxes		20,495		19,635
Current liabilities		146,070		103,686

Deferred income taxes and other liabilities		32,520		30,167
Long-term debt, less current maturities		112,272		115,983
Shareholders' equity		339,309		333,009
Total liabilities and shareholders' equity	$	630,171	$	582,845

	13 Weeks Ended						26 Weeks Ended
	November 28,			November 29,			November 28,			November 29,
	2009			2008			2009			2008
Net sales	$	229,233		$	238,314		$	416,899		$	445,202
Gross profit		46,827			58,016			65,044			98,663
Operating income		25,435			43,124			20,134			61,105
Other expense		(799	)		(332	)		(2,358	)		(896	)
Income before income taxes		24,636			42,792			17,776			60,209

Net income	$	16,094		$	27,244		$	12,262		$	38,391

Net income per common share:
Basic	$	0.68		$	1.15		$	0.52		$	1.62
Diluted	$	0.67		$	1.14		$	0.51		$	1.61

Weighted average shares outstanding:
Basic		23,807			23,789			23,799			23,750
Diluted		23,881			23,826			23,873			23,797