W. A. D. Nayananjalie

ORCID: 0000-0002-5225-0074
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Research Areas
  • Ruminant Nutrition and Digestive Physiology
  • Genetic and phenotypic traits in livestock
  • Animal Nutrition and Physiology
  • Effects of Environmental Stressors on Livestock
  • Reproductive Physiology in Livestock
  • Livestock Management and Performance Improvement
  • Meat and Animal Product Quality
  • Milk Quality and Mastitis in Dairy Cows
  • Agricultural Economics and Practices
  • Polyamine Metabolism and Applications
  • Rabbits: Nutrition, Reproduction, Health
  • Agricultural Systems and Practices
  • Livestock and Poultry Management
  • Crop Yield and Soil Fertility
  • Agriculture, Soil, Plant Science
  • Soil and Water Nutrient Dynamics
  • Magnetic and Electromagnetic Effects
  • Nuts composition and effects
  • Muscle Physiology and Disorders
  • Food Quality and Safety Studies
  • PI3K/AKT/mTOR signaling in cancer
  • Agriculture and Rural Development Research
  • Food Industry and Aquatic Biology
  • Agricultural pest management studies
  • Moringa oleifera research and applications

Rajarata University of Sri Lanka
2015-2023

Virginia Tech
2011-2015

This study assessed the effect of rearing system on carcass traits, meat quality and sensory attributes slow-growing indigenous chicken raised pasture lands. Semi-intensive pasture-raised (PRS) with six replicates intensive (IS) three were tested. Live weight at slaughtering, total yield, yield cuts, parameters collected. Dressing percentage was calculated. Sensory broiler vs PRS IS also evaluated. The data revealed significantly higher (p˂0.05) average per bird in (954.42±31.20 g) than...

10.4038/jdza.v10i2.94 article EN Journal of Dry Zone Agriculture 2025-04-03

The objectives of this study were to assess the effects early grain feeding on acetate and glucose turnover rates preference for palmitate synthesis by subcutaneous fat (SCF), intramuscular (IMF), visceral (VF) in finishing steers. Sixteen Angus × Simmental steers used study; 8 weaned (EW) fed a high-grain diet immediately after weaning 100 or 148 d, remained with their dams pasture until at 202 ± 5 253 d age. Normal (NW) EW animals combined grazed 374 393 age, when they placed corn...

10.2527/jas.2014-8374 article EN Journal of Animal Science 2015-05-01

10.29322/ijsrp.8.4.2018.p7627 article EN International Journal of Scientific and Research Publications 2018-04-12

International Journal of Multidisciplinary Studies (IJMS) is published by the Faculty Graduate - University Sri Jayewardenepura. IJMS provides a supportive environment for multidisciplinary researchers to publish their contribution academy knowledge and wisdom. Focus journal on research which should cover at least two distinct disciplines.

10.4038/ijms.v2i1.64 article EN International Journal of Multidisciplinary Studies 2015-06-30

The objective of this study was to determine the effect early weaning followed by a period high-grain feeding on plasma acetate kinetics and signaling protein phosphorylation in LM tissue growing steers. We hypothesized that grain would result altered cell use support observed improvements carcass gain marbling. Fall-born Angus × Simmental steers were weaned at 106 ± 4 d age (early [EW]; n = 6) fed diet for 148 or remained with their dams (normal [NW]; pasture until 251 5 age. Both...

10.2527/jas.2014-8277 article EN Journal of Animal Science 2015-05-01

This study was aimed to determine the effect of cow factors; breed, age, nutritional status, lactation number and stage milk composition on freezing point depression (FPD) milk. Unadulterated individual samples were collected from different breeds. All tested for FPD, Milk Urea Nitrogen (MUN) its composition. Results revealed that FPD significantly differed (P < 0.05) with successive lactations status cow. cross bred cows showed higher compared pure Freezing increased age but MUN lowered...

10.5455/ijlr.20160512114121 article EN International Journal of Livestock Research 2016-01-01

This study was conducted to investigate the possibility of using palm kernel cake (PKC) in broiler rations Sri Lanka. Three hundred, day-old chicks were randomly allocated into five treatment diets with different levels PKC a Complete Randomized Design. Body weight gain significantly less (P 0.05) among birds fed diets. Results revealed that is potential feed ingredient feeding and it can be incorporated up 15% without any adverse effects.

10.5455/ijlr.20170201053413 article EN International Journal of Livestock Research 2017-01-01

Even though, recommended ethanol concentration for alcohol test is 68% (v/v), different levels are used to detect milk acidity which leads unjustified sample rejection. This study was aimed investigate the compositional and keeping quality parameters of raw on stability. Milk samples were collected tested stability using concentrations ethyl viz. 66%, 68%, 70%, 72% 74% (v/v). Selected analyzed compositional, physical properties. Result revealed that significantly differed (P 0.05)....

10.5455/ijlr.20160325105132 article EN International Journal of Livestock Research 2016-01-01

The study was carried out to compare the yield and nutritive value of recently introduced fodder species; Sorghum var. Sugar Graze with hybrid Napier CO-3, commonly used by Sri Lankan dairy farmers. Field experiment conducted as a Randomized Complete Block Design. Two harvests were obtained at 50% flowering stage parameters, anti-nutritive factors determined. Plant height dry matter yields significantly (P < 0.05) higher compared CO-3 in both harvests. However, highest soluble carbohydrate...

10.5455/ijlr.20160810105641 article EN International Journal of Livestock Research 2016-01-01

The effect of feeding low dietary crude protein (CP) with different levels supplemental protease enzyme on commercial broilers was investigated. Three-hundred broiler chicks were divided into five treatments six replicates in a completely randomized design. experimental diets positive control (recommended CP levels, T1), negative (level reduced by 5%, T2), + 300 g t-1 (T3), 400 (T4) and 500 (T5). Growth, blood serum, carcass quality meat parameters measured. Data analysed using one-way...

10.4038/sljae.v2i2.42 article EN Sri Lankan Journal of Agriculture and Ecosystems 2020-12-28

We showed previously that TMR briquettes made with a variety of forages and industrial by-products had higher crude protein energy concentrations than the conventional diet including fresh-cut Guinea grass commercial cattle pellet (CTL). The study objective was to determine what extent nutritional advantages would be translated into milk production dairy cows in dry zone Sri Lanka. Nine Jersey × Sahiwal were assigned CTL or two 3 Latin square design three periods each 14 d for measurement 7...

10.3390/ani12070932 article EN cc-by Animals 2022-04-05

Feed blocks, which are made by improving the nutritional status of agricultural by-products, a proved solution to uplift productivity dairy animals in Sri Lanka. Though feed block making machines locally available, their prices unaffordable for small-scale rural farmers. Therefore, objective this study was introduce an efficient and affordable machine The newly fabricated consisted hydraulically operated jack, mould piston fixed iron frame. total cost production 43,000 LKR. blocks were...

10.4038/sljae.v2i1.28 article EN Sri Lankan Journal of Agriculture and Ecosystems 2020-06-01

This experiment intended to figure out the nutritive value of fodder species and industrial by-products for feeding ruminants in Anuradhpura. Fodder species; maize (<em>Zea mays</em>), sorghum (<em>Sorghum bicolour</em>), CO-3 (<em>Pennisetum purpureum</em> x <em>P. americanum</em>), gliricidia (<em>Gliricidia</em> <em>sepium</em>), guinea grass (<em>Panicum maximum</em>) agro-industrial by-products; rice (<em>Oryza</em> <em>sativa</em>) bran, coconut (<em>Cocos nucifera</em>) poonac,...

10.4038/jdza.v6i2.46 article EN cc-by Journal of Dry Zone Agriculture 2020-12-30

This research aims to find out the feasibility of formation different total mixed ration (TMR) briquettes. Six recipes (TMR1, TMR2, TMR3, TMR4, TMR5, and TMR6) were prepared by blending combinations forages concentrates balance nutrient requirements lactating dairy cows. Each TMR briquette was wrapped stored at room temperature for three months tested monthly intervals composition shelf life. A cost analysis performed determine economic feasibility. The crude protein, ether extract, fibre,...

10.4038/sljae.v3i1.60 article EN Sri Lankan Journal of Agriculture and Ecosystems 2021-06-29

International Journal of Multidisciplinary Studies (IJMS) is published by the Faculty Graduate - University Sri Jayewardenepura. IJMS provides a supportive environment for multidisciplinary researchers to publish their contribution academy knowledge and wisdom. Focus journal on research which should cover at least two distinct disciplines.

10.4038/ijms.v4i1.39 article EN International Journal of Multidisciplinary Studies 2017-07-26
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