ADVERTISEMENT
Manila Bulletin devider Philippines devider National devider Shrimp, 'ludong' industry set to benefit from production and management projects says DOST-PCAARRD

Shrimp, 'ludong' industry set to benefit from production and management projects says DOST-PCAARRD

Published Aug 25, 2022 04:38 pm

Four projects funded by the Philippine Council for Agriculture, Aquatic and Natural Resources Research and Development of the Department of Science and Technology (DOST-PCAARRD) are set to benefit the country's shrimp and "ludong" industry.

(Photo from DOST-Mimaropa)

According to DOST-PCAARRD, a project has been developed for shrimps that employs a biofloc technology (BFT) protocol for tank-based nursery production of white leg shrimp (P. vannamei) for improved survival and growth and a biofloc calculator, which is a farmer-friendly way of determining the amount of sugar that will be added to the system.

"It was also reported that the combination of shrimp (P. monodon), milkfish (C. chanos), seaweeds (G. verrucosa), and green mussel (P. viridis) was found to be the most suitable integrated multi-trophic aquaculture (IMTA) species combination that showed better performance in shrimp growth, production, profitability and minimizing the V. parahaemoliticus and White Spot Syndrome Virus," DOST-PCAARRD stated.

The agency further mentioned that adverse effects were observed due to exposure to fluctuating temperatures like structural disintegration on the gills and hepatopancreas of shrimps that can cause functional changes in the affected organs.

Meanwhile, the project on ludong, one of the Philippines’ most expensive fish, reported that 11 municipalities along Cagayan River tributaries were identified as ludong’s fishing ground. In terms of feed, continuous and alternate feeding of commercial diet and duckweed improved the growth performance of ludong in captivity. Moreover, October was found to be the peak spawning month of ludong.

These accomplishments were discussed during the terminal review of the completed inland aquatic research and development projects under the Shrimp and Inland Aquatic Biodiversity Industry Strategic S&T Program held by the Inland Aquatic Resources Research Division (IARRD) of DOST-PCAARRD.

The review determined the project’s attainment of its commitments under the Industry Strategic S&T Program; identified technologies that are ready for transfer and information for dissemination to intended beneficiaries; and identified additional areas for research.

According to DOST-PCAARRD Technical Review and Evaluation Panel was composed of Mr. Wilfredo G. Yap, executive director of SANTEH Aquaculture Science and Technology Foundation, Inc.; Dr. Maria Rowena R. Eguia, scientist from the Southeast Asian Fisheries Development Center – Aquaculture Department (SEAFDEC-AQD); and Dr. Francisco B. Elegado, research associate professor at the BIOTECH, University of the Philippines Los Baños.

ADVERTISEMENT
.most-popular .layout-ratio{ padding-bottom: 79.13%; } @media (min-width: 768px) and (max-width: 1024px) { .widget-title { font-size: 15px !important; } }

{{ articles_filter_1561_widget.title }}

{{ item.title }}
.most-popular .layout-ratio{ padding-bottom: 79.13%; } @media (min-width: 768px) and (max-width: 1024px) { .widget-title { font-size: 15px !important; } }

{{ articles_filter_1562_widget.title }}

{{ item.title }}
.most-popular .layout-ratio{ padding-bottom: 79.13%; } @media (min-width: 768px) and (max-width: 1024px) { .widget-title { font-size: 15px !important; } }

{{ articles_filter_1563_widget.title }}

{{ item.title }}

{{ articles_filter_1564_widget.title }}

{{ item.title }}
.mb-article-details { position: relative; } .mb-article-details .article-body-preview, .mb-article-details .article-body-summary{ font-size: 17px; line-height: 30px; font-family: "Libre Caslon Text", serif; color: #000; } .mb-article-details .article-body-preview iframe , .mb-article-details .article-body-summary iframe{ width: 100%; margin: auto; } .read-more-background { background: linear-gradient(180deg, color(display-p3 1.000 1.000 1.000 / 0) 13.75%, color(display-p3 1.000 1.000 1.000 / 0.8) 30.79%, color(display-p3 1.000 1.000 1.000) 72.5%); position: absolute; height: 200px; width: 100%; bottom: 0; display: flex; justify-content: center; align-items: center; padding: 0; } .read-more-background a{ color: #000; } .read-more-btn { padding: 17px 45px; font-family: Inter; font-weight: 700; font-size: 18px; line-height: 16px; text-align: center; vertical-align: middle; border: 1px solid black; background-color: white; } .hidden { display: none; }
function initializeAllSwipers() { // Get all hidden inputs with cms_article_id document.querySelectorAll('[id^="cms_article_id_"]').forEach(function (input) { const cmsArticleId = input.value; const articleSelector = '#article-' + cmsArticleId + ' .body_images'; const swiperElement = document.querySelector(articleSelector); if (swiperElement && !swiperElement.classList.contains('swiper-initialized')) { new Swiper(articleSelector, { loop: true, pagination: false, navigation: { nextEl: '#article-' + cmsArticleId + ' .swiper-button-next', prevEl: '#article-' + cmsArticleId + ' .swiper-button-prev', }, }); } }); } setTimeout(initializeAllSwipers, 3000); const intersectionObserver = new IntersectionObserver( (entries) => { entries.forEach((entry) => { if (entry.isIntersecting) { const newUrl = entry.target.getAttribute("data-url"); if (newUrl) { history.pushState(null, null, newUrl); let article = entry.target; // Extract metadata const author = article.querySelector('.author-section').textContent.replace('By', '').trim(); const section = article.querySelector('.section-info ').textContent.replace(' ', ' '); const title = article.querySelector('.article-title h1').textContent; // Parse URL for Chartbeat path format const parsedUrl = new URL(newUrl, window.location.origin); const cleanUrl = parsedUrl.host + parsedUrl.pathname; // Update Chartbeat configuration if (typeof window._sf_async_config !== 'undefined') { window._sf_async_config.path = cleanUrl; window._sf_async_config.sections = section; window._sf_async_config.authors = author; } // Track virtual page view with Chartbeat if (typeof pSUPERFLY !== 'undefined' && typeof pSUPERFLY.virtualPage === 'function') { try { pSUPERFLY.virtualPage({ path: cleanUrl, title: title, sections: section, authors: author }); } catch (error) { console.error('ping error', error); } } // Optional: Update document title if (title && title !== document.title) { document.title = title; } } } }); }, { threshold: 0.1 } ); function showArticleBody(button) { const article = button.closest("article"); const summary = article.querySelector(".article-body-summary"); const body = article.querySelector(".article-body-preview"); const readMoreSection = article.querySelector(".read-more-background"); // Hide summary and read-more section summary.style.display = "none"; readMoreSection.style.display = "none"; // Show the full article body body.classList.remove("hidden"); } document.addEventListener("DOMContentLoaded", () => { let loadCount = 0; // Track how many times articles are loaded const offset = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]; // Offset values const currentUrl = window.location.pathname.substring(1); let isLoading = false; // Prevent multiple calls if (!currentUrl) { console.log("Current URL is invalid."); return; } const sentinel = document.getElementById("load-more-sentinel"); if (!sentinel) { console.log("Sentinel element not found."); return; } function isSentinelVisible() { const rect = sentinel.getBoundingClientRect(); return ( rect.top < window.innerHeight && rect.bottom >= 0 ); } function onScroll() { if (isLoading) return; if (isSentinelVisible()) { if (loadCount >= offset.length) { console.log("Maximum load attempts reached."); window.removeEventListener("scroll", onScroll); return; } isLoading = true; const currentOffset = offset[loadCount]; window.loadMoreItems().then(() => { let article = document.querySelector('#widget_1690 > div:nth-last-of-type(2) article'); intersectionObserver.observe(article) loadCount++; }).catch(error => { console.error("Error loading more items:", error); }).finally(() => { isLoading = false; }); } } window.addEventListener("scroll", onScroll); });
Join Our Newsletters

Sign up by email to receive news.

© 2025 Manila Bulletin The Nation's Leading Newspaper. All Rights Reserved.