货物
发表于 2025-3-26 22:02:56
Feed Formulation and Processing,vailable, supplemental feeds need not contain all of the essential nutrients. Nutritionally incomplete feeds are usually specific for a fish species or culture system; supplemental feeds for tilapia culture are discussed in chapter 8. This chapter discusses the formulation of nutritionally complete feeds.
越自我
发表于 2025-3-27 04:17:54
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我怕被刺穿
发表于 2025-3-27 07:08:11
The Nutrients,mammals and birds on land; and, they lose less energy in protein catabolism and excretion of nitrogenous wastes than land animals because they excrete most of their nitrogenous wastes as ammonia through the gills.
盟军
发表于 2025-3-27 12:46:44
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impaction
发表于 2025-3-27 14:14:52
,Practical Feeding—Eels,roximately 30,000 tons in 1985, most of which was exported to Japan. Demand for young eels (elvers) usually exceeds the supply. The supply of elvers depends on catches along the coasts of Japan, Taiwan, Korea, and China, and due to the large fluctuation in elver catches, the price varies greatly.
Epithelium
发表于 2025-3-27 17:53:01
The Concept of Feeding Fish,ilkfish during the rainy season. This practice was originated by the Malay natives before .. 1400 (Schuster 1952). Early interest in fish culture in the United States was carried over from England before 1800 and was concentrated on propagation and culture of trout and salmon.
exhibit
发表于 2025-3-27 23:30:15
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Culmination
发表于 2025-3-28 04:08:30
,Practical Feeding—Crawfish,ur in greater numbers in some areas. Although the common names of these two species imply differences in habitat, environmental and biological requirements of the two species are similar. Unless otherwise indicated, crawfish will refer to these two species.
BOAST
发表于 2025-3-28 07:55:05
Book 1989nique for fish. Knowledge on nutrition and practical feeding of fish is essential to successful aquaculture. This book is intended to be helpful to students, scientists, practic ing nutritionists, and aquaculturists. It covers the known nutrient requirements and deficiency effects for various fishe
Anguish
发表于 2025-3-28 14:08:17
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