科研之友
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摘要
In California, where more than 90% of processed tomatoes in the United States are produced and 50% of the US production of safflower seeds is grown, there is an abundance of tomato pomace, a by-product of tomato processing, and safflower meal from decorticated safflower seeds. Diets with these 2 ingredients may produce molt and postmolt results comparable with a recommended no-added-salt non-feed-removal diet. Therefore, molt and postmolt measurements were compared in third-cycle Single Comb White Leghorn hens fed non-feed-removal diets containing 1) corn and soybean meal (CS8, control), 2) corn meal with no added salt (C-NS), 3) C-NS and safflower meal (C-NS-SM), 4) or C-NS and tomato pomace (C-NS-TP). During the molt, birds fed C-NS-TP consumed amounts of feed comparable with those of birds fed the other test diets; however, birds fed tomato pomace had lower BW and observably more diarrhea than other birds. Mortality did not differ among birds fed the treatment diets during the molt and postmolt periods. No differences were observed among treatment groups for postmolt BW, mortality, specific gravity of eggs, and eggshell thickness. Postmolt egg production was different among treatment groups, ranked as CS8 > C-NS > C-NS-SM > C-NS-TP. After molting, hens fed the C-NS-SM and C-NS-TP diets produced lower egg weights than did hens fed the CS8 and C-NS diets. The Haugh units for eggs from hens fed the C-NS, C-NS-SM, and C-NS-TP diets were higher than those for eggs from hens fed the CS8 diet. Overall, feeding safflower meal yielded results for feed consumption and BW comparable with those of feeding the no-salt diet during molt. However, except for egg production, postmolt measurements were equivalent among the C-NS, C-NS-SM, and C-NS-TP diets. We conclude that tomato pomace is useful in non-feed-removal molt diets.
- 出版日期2011-9
