Seroprevalence of SARS-CoV-2-specific IgG antibodies in Kashmir, India, 7 months after the first reported local COVID-19 case: results of a population-based seroprevalence survey from October to November 2020.

OBJECTIVES: We designed a population-based survey in Kashmir to estimate the seroprevalence of SARS-CoV-2-specific IgG antibodies in the general population aged 18 years and above. SETTING: The survey was conducted among 110 villages and urban wards across 10 districts in Kashmir from 17 October 2020 to 4 November 2020. PARTICIPANTS: Individuals aged 18 years and above were eligible to be included in the survey. Serum samples were tested for the presence of SARS-CoV-2-specific IgG antibodies using the Abbott SARS-CoV-2 IgG assay. PRIMARY AND SECONDARY OUTCOME MEASURES: We labelled assay results equal to or above the cut-off index value of 1.4 as positive for SARS-CoV-2-specific IgG antibodies. Seroprevalence estimates were adjusted for the sampling design and assay characteristics. RESULTS: Out of 6397 eligible individuals enumerated, 6315 (98.7%) agreed to participate. The final analysis was done on 6230 participants. Seroprevalence adjusted for the sampling design and assay characteristics was 36.7% (95% CI 34.3% to 39.2%). Seroprevalence was higher among the older population. Among seropositive individuals, 10.2% (247/2415) reported a history of COVID-19-like symptoms. Out of 474 symptomatic individuals, 233 (49.2%) reported having been tested. We estimated an infection fatality rate of 0.034%. CONCLUSIONS: During the first 7 months of the COVID-19 epidemic in Kashmir Valley, approximately 37% of individuals were infected. The reported number of COVID-19 cases was only a small fraction of the estimated number of infections. A more efficient surveillance system with strengthened reporting of COVID-19 cases and deaths is warranted.

Livestock feed resources availability, feeding practices, and nutrient balances in high Himalaya (Gurez) valley of Kashmir.

Assessment of the ruminant livestock feed sources availability, existing feeding practices, and nutrient balances was embarked at different zones of Gurez valley of Kashmir in two major seasons (summer and winter). A baseline survey was conducted to obtain the information in three zones, viz., Lower, Middle and Upper Gurez. The study was carried out in three villages in each zone where seven farmer families per village were selected randomly for the study. A total of 63 households owning livestock were interviewed to collect the information and the samples of available animal feeds and fodders fed during the seasons for chemical analysis. Daily nutrient intakes were calculated and compared with the standard requirements to determine the nutrient balances of livestock during the seasons. The main crops cultivated only during summer season were pulses (98.41%), maize (95.24%), and potatoes (90.48%), while few farmers in Lower and Middle Gurez also sow oats (42.86%) and had apple orchards (17.46%), the by-products and wastes of which were utilized as livestock feeds. The only fodder crop cultivated throughout Gurez was maize. During winter, due to very harsh climatic conditions, no agricultural activities are being carried out, as such greenery perishes from the scenario. Feed resources availability to the livestock varied according to the season. Animals relied mainly on natural grazing resources available overabundant during summer and remained undernourished due to very limited feed resources during winter when completely stall-fed. Most of the farmers offered tree foliage (92%) and practiced concentrate feed (86%) supplementation to their animals particularly during winter season (96%). Farmers (87%) were preparing concentrate feed at home by blending ingredients available with them. Only 6% of the farmers supplemented the diet of animals with mineral mixture. Nutrient intakes through different feed resources were in excess during summer, while non-availability of green fodder during winter leads to considerable nutritional deficit in quantity, as well as quality. It is concluded that lack of technical know-how among the animal rearers regarding livestock feeding strategies and winter season feed/fodder scarcity are the major constraints that limit livestock productivity. It is therefore suggested that there is a dire need for nutritional innovations to increase fodder production as well as adoption of fodder conservation and feeding strategies for ensuring year-round availability of animal feeds if sustainable livestock production is to be met in the high Himalaya Gurez valley of Kashmir.

Prospects of complete feed system in ruminant feeding: A review.

Effective utilization of available feed resources is the key for economical livestock rearing. Complete feed system is one of the latest developments to exploit the potential of animal feed resources in the best possible way. The complete feed is a quantitative mixture of all dietary ingredients, blended thoroughly to prevent separation and selection, fed as a sole source of nutrients except water and is formulated in a desired proportion to meet the specific nutrient requirements. The concentrate and roughage levels may vary according to the nutrient requirement of ruminants for different production purposes. The complete feed with the use of fibrous crop residue is a noble way to increase the voluntary feed intake and thus animal's production performance. In this system of feeding, the ruminant animals have continuous free choice availability of uniform feed mixture, resulting in more uniform load on the rumen and less fluctuation in release of ammonia which supports more efficient utilization of ruminal non-protein nitrogen. Feeding complete diet stabilizes ruminal fermentation, thereby improves nutrient utilization. This feeding system allows expanded use of agro-industrial by-products, crop residues and nonconventional feeds in ruminant ration for maximizing production and minimizing feeding cost, thus being increasingly appreciated. However, to extend the concept extensively to the field and make this technology successful and viable for farmers, more efforts are needed to be taken.