Rakhi Kumari

Central Institute of Freshwater Aquaculture | CIFA · Fish Nutrition and Physiology Division

Exogenous proteolytic enzyme supplementation is required in certain disease conditions in humans and animals and due to compelling reasons on use of more plant protein ingredients and profitability in animal feed industry. However, limitations on their utility in diet are imposed by their pH specificity, thermolabile nature, inhibition due to a var...

Exogenous nucleotide supplementation during times of rapid growth and stress is preferred because de novo synthesis is insufficient and energetically a costly process. To overcome inefficient utilization of dietary nucleotides due to intestinal cell repulsion and dependency on pH, an efficient controlled delivery system based on chitosan nanopartic...

In world, at present more than 800 million continue to suffer from chronic malnourishment and the global population is expected to grow by another 2 billion to reach 9.6 billion people by 2050. Therefore, it is a huge challenge of feeding the growing population, and at the same time safeguarding its natural resources for future generations. The mic...

Anabas testudineus is one of the potential candidates for species diversification in freshwater aquaculture. The present study aimed to evaluate the consumption pattern of endogenous nutritional components available in the form of yolk and digestive enzymes status during early larval development of A. testudineus. The fatty acid profiles viz., satu...

Due to the market instability and increasing demand and prices of fishmeal, the aquafeed industry must seek alternative protein feedstuffs to keep producing aquafeeds in a sustainable and cost-effective way. Hermetia illucens (BSF) larvae meal is considered sustainable since its production recycles organic waste streams into a valuable nutrient. Th...

Real‐time quantitative PCR (RT‐qPCR) is the most advanced and commonly used method for quantification of gene expression levels because of its high sensitivity, specificity and accuracy. The analytical capability of RT‐qPCR, on the other hand, is dependent on precise normalization by using the most stable reference genes. The present study was unde...

High‐density fingerling rearing of pengba was conducted for 90 days in biofloc system (BFS) to study the effect of stocking density on growth, feed utilization, water quality, water use efficiency and health of animals. The study was conducted in 12 continuously aerated tanks (50 m3), grouped into four treatments T‐1, T‐2, T‐3 and T‐4, which were s...

A 60-day feeding trial was conducted to optimally reduce the fishmeal level in climbing perch (Anabas testudineus) fingerling diet using a dietary brewer’s spent yeast biomass (BSY) based diet. In this study, five isonitrogenous (35% CP) and isocaloric (19.15 MJ/Kg) feeds were prepared by replacing 0 (BSY0), 25% (BSY25), 50% (BSY50), 75% (BSY75) an...

High density fingerling rearing of pengba, Osteobrama belangeri in biofloc system was carried out for 45 days with wheat flour and molasses as two carbon sources to maintain C/N ratio of 15:1. Effect of biofloc was evaluated in terms of water quality changes, fish growth performance, digestive enzyme activities, non‐specific immune system and antio...

The effect of dietary fish protein hydrolysate (FPH) at inclusion levels of 0% (control), 5% (FPH5), 10% (FPH10) and 15% (FPH15) (w/w) on growth, digestive enzyme activity, immune response and antioxidant status of striped murrel, Channa striata (4.18 ± 0.04 g), was evaluated. The dietary FPH inclusion had significantly increased weight gain (WG),...

Ontogeny of the digestive tract and its accessory organs and their further development in the Indian walking catfish (Clarias magur) were examined in larvae, starting from the day of hatching until 35 days post-hatching (dph) reared at 28–29 °C. Many organs at their primordial stage were seen on the day of hatching. These include opened oral cavity...

Aquaculture production has become one of the fastest-growing quality animal protein-producing enterprises, contributing significantly to satisfying increased demand for animal protein by providing barely half of all fish and shellfish consumed directly by humans. As consequences of the intensification of aquaculture for meeting the demand, high fee...

The development of a cost effective feed is a necessity for profitable operation of fish farms. One approach towards the reduction of feed cost is the utilization of locally available non-conventional agroindustrial byproducts. In order to assess the potential of sugar industry by-products (press mud and cane molasses) as ingredients in the feed fo...

प्रौद्योगिकी समर्थित जलकृषि न केवल जल- सघन व्यवसायों के हानिकारक प्रभावों को कम करता है, बल्कि युवाओं को खेती के व्यवसाय के लिए भी प्रोत्साहित करता है। मत्स्य उत्पादन और इसकी लाभप्रदता को बढ़ाने के लिए पानी की कम आवश्यकता और मछली के उच्च घनत्व वाले संग्रहण से संबंधित विभिन्न तकनीकों का उपयोग किया जा रहा है। इनमें अलंकारी मछलियों का पालन, मोती पालन,...

Endocrine disrupting substances (EDS) an exogenous agent which have ability to alter the synthesis, release, transport, binding action, metabolism and elimination of natural hormones in the body that is responsible for normal physiology, homeostasis and regulation of development process. According to World Health Organization (WHO) endocrine disrup...

To understand the carbohydrate utilization ability during developmental stages of Clarias magur, the mRNA levels and enzyme activity of amylase were studied. Furthermore, the transcript levels of some important growth genes like growth hormone (GH), insulin-like growth factor I (IGF-I) and insulin-like growth factor binding protein (IGFBP) were eva...