Advanced Replacement Heifer Calculator<\/title>\n \n \n <script src=\"https:\/\/cdn.tailwindcss.com\"><\/script>\n \n \n <link rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\">\n <link rel=\"preconnect\" href=\"https:\/\/fonts.gstatic.com\" crossorigin>\n <link href=\"https:\/\/fonts.googleapis.com\/css2?family=Inter:wght@400;500;600;700&display=swap\" rel=\"stylesheet\">\n \n <style>\n \/* Custom styles to enhance the UI *\/\n body {\n font-family: 'Inter', sans-serif;\n }\n \n \/* Custom tooltip for info icons *\/\n .tooltip {\n position: relative;\n display: inline-block;\n }\n\n .tooltip .tooltiptext {\n visibility: hidden;\n width: 220px;\n background-color: #1f2937; \/* gray-800 *\/\n color: #fff;\n text-align: center;\n border-radius: 6px;\n padding: 8px;\n position: absolute;\n z-index: 1;\n bottom: 125%;\n left: 50%;\n margin-left: -110px;\n opacity: 0;\n transition: opacity 0.3s;\n font-size: 0.875rem;\n line-height: 1.25rem;\n box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);\n border: 1px solid #4b5563; \/* gray-600 *\/\n }\n\n .tooltip:hover .tooltiptext {\n visibility: visible;\n opacity: 1;\n }\n \n \/* Custom transition for result section *\/\n .results-hidden {\n max-height: 0;\n opacity: 0;\n transform: translateY(-20px);\n transition: all 0.5s ease-out;\n overflow: hidden;\n }\n \n .results-visible {\n max-height: 1500px; \/* Adjust as needed *\/\n opacity: 1;\n transform: translateY(0);\n transition: all 0.5s ease-in;\n }\n\n <\/style>\n<\/head>\n<body class=\"bg-gray-900 text-gray-200 antialiased\">\n\n <div class=\"container mx-auto p-4 sm:p-6 lg:p-8 max-w-7xl\">\n \n <header class=\"text-center mb-8\">\n <h1 class=\"text-3xl sm:text-4xl font-bold text-white tracking-tight\">Advanced Replacement Heifer Calculator<\/h1>\n <p class=\"mt-2 text-lg text-gray-400\">Analyze and compare herd replacement strategies with improved calculations.<\/p>\n <\/header>\n\n \n <main class=\"space-y-8\">\n \n <section class=\"bg-gray-800 p-6 rounded-lg shadow-lg border border-gray-700\">\n <h2 class=\"text-xl font-semibold mb-4 text-white\">Global Assumptions<\/h2>\n <div class=\"grid grid-cols-1 md:grid-cols-2 gap-6\">\n <div class=\"input-group\">\n <label for=\"dailyRearingCost\" class=\"flex items-center text-sm font-medium text-gray-400 mb-2\">\n Daily Rearing Cost per Heifer ($)\n <div class=\"tooltip ml-2\">\n <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"h-4 w-4 text-gray-500\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\">\n <path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z\" \/>\n <\/svg>\n <span class=\"tooltiptext\">The average daily cost to raise a heifer from birth to first calving (includes feed, vet, labor, etc.).<\/span>\n <\/div>\n <\/label>\n <input type=\"number\" id=\"dailyRearingCost\" value=\"3.00\" step=\"0.01\" class=\"w-full bg-gray-700 border border-gray-600 text-white rounded-lg p-2.5 focus:ring-2 focus:ring-blue-500 focus:border-blue-500 transition\">\n <\/div>\n <\/div>\n <\/section>\n\n \n <div class=\"grid grid-cols-1 lg:grid-cols-2 gap-8\">\n \n <div class=\"scenario bg-gray-800 p-6 rounded-lg shadow-lg border border-gray-700\">\n <h3 class=\"text-2xl font-bold mb-6 text-cyan-400\">Scenario 1: Current Strategy<\/h3>\n <div class=\"space-y-4\">\n <div class=\"input-group\">\n <label for=\"herdSize1\" class=\"flex items-center text-sm font-medium text-gray-400 mb-2\">Herd Size \n <div class=\"tooltip ml-2\">\n <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"h-4 w-4 text-gray-500\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\"><path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z\" \/><\/svg>\n <span class=\"tooltiptext\">Total number of mature cows in the herd.<\/span>\n <\/div>\n <\/label>\n <input type=\"number\" id=\"herdSize1\" value=\"500\" class=\"w-full bg-gray-700 border border-gray-600 text-white rounded-lg p-2.5 focus:ring-2 focus:ring-blue-500 focus:border-blue-500 transition\">\n <\/div>\n <div class=\"input-group\">\n <label for=\"cullRate1\" class=\"flex items-center text-sm font-medium text-gray-400 mb-2\">Annual Cull Rate (%)\n <div class=\"tooltip ml-2\">\n <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"h-4 w-4 text-gray-500\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\"><path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z\" \/><\/svg>\n <span class=\"tooltiptext\">Percentage of the herd culled or removed annually for any reason.<\/span>\n <\/div>\n <\/label>\n <input type=\"number\" id=\"cullRate1\" value=\"25\" class=\"w-full bg-gray-700 border border-gray-600 text-white rounded-lg p-2.5 focus:ring-2 focus:ring-blue-500 focus:border-blue-500 transition\">\n <\/div>\n <div class=\"input-group\">\n <label for=\"mortalityRate1\" class=\"flex items-center text-sm font-medium text-gray-400 mb-2\">Heifer Mortality & Non-Breeding Rate (%)\n <div class=\"tooltip ml-2\">\n <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"h-4 w-4 text-gray-500\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\"><path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z\" \/><\/svg>\n <span class=\"tooltiptext\">Percentage of heifers that are lost or fail to become pregnant between birth and calving.<\/span>\n <\/div>\n <\/label>\n <input type=\"number\" id=\"mortalityRate1\" value=\"15\" class=\"w-full bg-gray-700 border border-gray-600 text-white rounded-lg p-2.5 focus:ring-2 focus:ring-blue-500 focus:border-blue-500 transition\">\n <\/div>\n <div class=\"input-group\">\n <label for=\"ageAtCalving1\" class=\"flex items-center text-sm font-medium text-gray-400 mb-2\">Age at First Calving (months)\n <div class=\"tooltip ml-2\">\n <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"h-4 w-4 text-gray-500\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\"><path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z\" \/><\/svg>\n <span class=\"tooltiptext\">The average age in months when a heifer has her first calf.<\/span>\n <\/div>\n <\/label>\n <input type=\"number\" id=\"ageAtCalving1\" value=\"24\" class=\"w-full bg-gray-700 border border-gray-600 text-white rounded-lg p-2.5 focus:ring-2 focus:ring-blue-500 focus:border-blue-500 transition\">\n <\/div>\n <\/div>\n <\/div>\n\n \n <div class=\"scenario bg-gray-800 p-6 rounded-lg shadow-lg border border-gray-700\">\n <h3 class=\"text-2xl font-bold mb-6 text-green-400\">Scenario 2: Proposed Strategy<\/h3>\n <div class=\"space-y-4\">\n <div class=\"input-group\">\n <label for=\"herdSize2\" class=\"text-sm font-medium text-gray-400 mb-2 block\">Herd Size<\/label>\n <input type=\"number\" id=\"herdSize2\" value=\"500\" class=\"w-full bg-gray-700 border border-gray-600 text-white rounded-lg p-2.5 focus:ring-2 focus:ring-blue-500 focus:border-blue-500 transition\">\n <\/div>\n <div class=\"input-group\">\n <label for=\"cullRate2\" class=\"text-sm font-medium text-gray-400 mb-2 block\">Annual Cull Rate (%)<\/label>\n <input type=\"number\" id=\"cullRate2\" value=\"20\" class=\"w-full bg-gray-700 border border-gray-600 text-white rounded-lg p-2.5 focus:ring-2 focus:ring-blue-500 focus:border-blue-500 transition\">\n <\/div>\n <div class=\"input-group\">\n <label for=\"mortalityRate2\" class=\"text-sm font-medium text-gray-400 mb-2 block\">Heifer Mortality & Non-Breeding Rate (%)<\/label>\n <input type=\"number\" id=\"mortalityRate2\" value=\"10\" class=\"w-full bg-gray-700 border border-gray-600 text-white rounded-lg p-2.5 focus:ring-2 focus:ring-blue-500 focus:border-blue-500 transition\">\n <\/div>\n <div class=\"input-group\">\n <label for=\"ageAtCalving2\" class=\"text-sm font-medium text-gray-400 mb-2 block\">Age at First Calving (months)<\/label>\n <input type=\"number\" id=\"ageAtCalving2\" value=\"22\" class=\"w-full bg-gray-700 border border-gray-600 text-white rounded-lg p-2.5 focus:ring-2 focus:ring-blue-500 focus:border-blue-500 transition\">\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n\n \n <div class=\"text-center pt-4\">\n <button onclick=\"calculateAndDisplay()\" class=\"bg-blue-600 hover:bg-blue-700 text-white font-bold py-3 px-8 rounded-lg shadow-md hover:shadow-lg transform hover:-translate-y-0.5 transition-all duration-300 ease-in-out\">\n Calculate & Compare\n <\/button>\n <\/div>\n\n \n <section id=\"resultsSection\" class=\"results-hidden space-y-8\">\n <div class=\"grid grid-cols-1 lg:grid-cols-3 gap-8 text-center\">\n \n <div class=\"bg-gray-800 p-6 rounded-lg border border-cyan-500\/50\">\n <h4 class=\"text-lg font-semibold text-cyan-400 mb-4\">Scenario 1 Results<\/h4>\n <p class=\"text-gray-400 text-sm\">Heifers to Develop Annually<\/p>\n <p id=\"heifersToDevelop1\" class=\"text-3xl font-bold text-white mb-4\">0<\/p>\n <p class=\"text-gray-400 text-sm\">Total Heifer Inventory<\/p>\n <p id=\"heiferInventory1\" class=\"text-3xl font-bold text-white mb-4\">0<\/p>\n <p class=\"text-gray-400 text-sm\">Total Annual Rearing Cost<\/p>\n <p id=\"totalCost1\" class=\"text-3xl font-bold text-white\"> $0<\/p>\n <\/div>\n\n \n <div class=\"bg-gray-800 p-6 rounded-lg border border-yellow-500\/50 flex flex-col justify-center items-center\">\n <h4 class=\"text-lg font-semibold text-yellow-400 mb-4\">Potential Annual Savings<\/h4>\n <p class=\"text-gray-400 text-sm\">Cost Savings<\/p>\n <p id=\"costSavings\" class=\"text-4xl font-bold text-white mb-4\">$0<\/p>\n <p class=\"text-gray-400 text-sm\">Fewer Heifers to Develop<\/p>\n <p id=\"heiferSavings\" class=\"text-4xl font-bold text-white\">0<\/p>\n <\/div>\n\n \n <div class=\"bg-gray-800 p-6 rounded-lg border border-green-500\/50\">\n <h4 class=\"text-lg font-semibold text-green-400 mb-4\">Scenario 2 Results<\/h4>\n <p class=\"text-gray-400 text-sm\">Heifers to Develop Annually<\/p>\n <p id=\"heifersToDevelop2\" class=\"text-3xl font-bold text-white mb-4\">0<\/p>\n <p class=\"text-gray-400 text-sm\">Total Heifer Inventory<\/p>\n <p id=\"heiferInventory2\" class=\"text-3xl font-bold text-white mb-4\">0<\/p>\n <p class=\"text-gray-400 text-sm\">Total Annual Rearing Cost<\/p>\n <p id=\"totalCost2\" class=\"text-3xl font-bold text-white\">$0<\/p>\n <\/div>\n <\/div>\n\n <\/section>\n \n \n <section class=\"bg-gray-800 p-6 rounded-lg shadow-lg border border-gray-700\">\n <h2 class=\"text-xl font-semibold mb-4 text-white\">Calculation Formulas<\/h2>\n <div class=\"space-y-3 text-gray-400\">\n <p><strong>1. Cows to Replace Annually:<\/strong> `Herd Size \u00d7 (Cull Rate \/ 100)`<\/p>\n <p><strong>2. Heifers to Develop Annually:<\/strong> `Cows to Replace \/ (1 – (Mortality Rate \/ 100))`<\/p>\n <p><strong>3. Total Heifer Inventory:<\/strong> `Heifers to Develop \u00d7 (Age at First Calving \/ 12)`<\/p>\n <p><strong>4. Total Annual Rearing Cost:<\/strong> `Total Heifer Inventory \u00d7 Daily Rearing Cost \u00d7 365.25`<\/p>\n <\/div>\n <\/section>\n <\/main>\n <\/div>\n\n <script>\n function calculateAndDisplay() {\n \/\/ --- 1. GATHER INPUTS ---\n const inputs = {};\n const ids = [\n 'dailyRearingCost', 'herdSize1', 'cullRate1', 'mortalityRate1', 'ageAtCalving1',\n 'herdSize2', 'cullRate2', 'mortalityRate2', 'ageAtCalving2'\n ];\n \n let allValid = true;\n ids.forEach(id => {\n const element = document.getElementById(id);\n const value = parseFloat(element.value);\n if (isNaN(value) || value < 0) {\n element.classList.add('border-red-500');\n allValid = false;\n } else {\n element.classList.remove('border-red-500');\n }\n inputs[id] = value;\n });\n\n if (!allValid) {\n \/\/ Optionally show an error message\n alert(\"Please ensure all fields contain valid, non-negative numbers.\");\n return;\n }\n\n \/\/ --- 2. PERFORM CALCULATIONS ---\n const calculateScenario = (herdSize, cullRate, mortalityRate, ageAtCalving, dailyCost) => {\n const cr = cullRate \/ 100;\n const mr = mortalityRate \/ 100;\n\n const cowsToReplace = herdSize * cr;\n const heifersToDevelop = cowsToReplace \/ (1 - mr);\n const heiferInventory = heifersToDevelop * (ageAtCalving \/ 12);\n const totalAnnualCost = heiferInventory * dailyCost * 365.25;\n\n return { heifersToDevelop, heiferInventory, totalAnnualCost };\n };\n \n const results1 = calculateScenario(inputs.herdSize1, inputs.cullRate1, inputs.mortalityRate1, inputs.ageAtCalving1, inputs.dailyRearingCost);\n const results2 = calculateScenario(inputs.herdSize2, inputs.cullRate2, inputs.mortalityRate2, inputs.ageAtCalving2, inputs.dailyRearingCost);\n\n const costSavings = results1.totalAnnualCost - results2.totalAnnualCost;\n const heiferSavings = results1.heifersToDevelop - results2.heifersToDevelop;\n\n \/\/ --- 3. UPDATE UI ---\n const formatCurrency = (value) => new Intl.NumberFormat('en-US', { style: 'currency', currency: 'USD', minimumFractionDigits: 0, maximumFractionDigits: 0 }).format(value);\n const formatNumber = (value) => new Intl.NumberFormat('en-US', { minimumFractionDigits: 1, maximumFractionDigits: 1 }).format(value);\n\n \/\/ Update result cards\n document.getElementById('heifersToDevelop1').textContent = formatNumber(results1.heifersToDevelop);\n document.getElementById('heiferInventory1').textContent = formatNumber(results1.heiferInventory);\n document.getElementById('totalCost1').textContent = formatCurrency(results1.totalAnnualCost);\n \n document.getElementById('heifersToDevelop2').textContent = formatNumber(results2.heifersToDevelop);\n document.getElementById('heiferInventory2').textContent = formatNumber(results2.heiferInventory);\n document.getElementById('totalCost2').textContent = formatCurrency(results2.totalAnnualCost);\n\n document.getElementById('costSavings').textContent = formatCurrency(costSavings);\n document.getElementById('heiferSavings').textContent = formatNumber(heiferSavings);\n\n \/\/ --- 4. SHOW RESULTS & UPDATE CHART ---\n const resultsSection = document.getElementById('resultsSection');\n resultsSection.classList.remove('results-hidden');\n resultsSection.classList.add('results-visible');\n\n \/\/ Scroll to results on smaller screens for better UX\n if(window.innerWidth < 768) {\n resultsSection.scrollIntoView({ behavior: 'smooth' });\n }\n\n }\n <\/script>\n<\/body>\n<\/html>\n\n\n","protected":false},"excerpt":{"rendered":"<p>Advanced Replacement Heifer Calculator Advanced Replacement Heifer Calculator Analyze and compare herd replacement strategies with improved calculations. Global Assumptions Daily Rearing Cost per Heifer ($) The average daily cost to raise a heifer from birth to first calving (includes feed,<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-328","page","type-page","status-publish","hentry"],"brizy_media":[],"_links":{"self":[{"href":"https:\/\/dr-nutrition.ca\/index.php?rest_route=\/wp\/v2\/pages\/328","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dr-nutrition.ca\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/dr-nutrition.ca\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/dr-nutrition.ca\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dr-nutrition.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=328"}],"version-history":[{"count":5,"href":"https:\/\/dr-nutrition.ca\/index.php?rest_route=\/wp\/v2\/pages\/328\/revisions"}],"predecessor-version":[{"id":1259,"href":"https:\/\/dr-nutrition.ca\/index.php?rest_route=\/wp\/v2\/pages\/328\/revisions\/1259"}],"wp:attachment":[{"href":"https:\/\/dr-nutrition.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=328"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

{"id":328,"date":"2024-12-14T01:27:06","date_gmt":"2024-12-14T01:27:06","guid":{"rendered":"https:\/\/dr-nutrition.ca\/?page_id=328"},"modified":"2026-02-04T13:07:34","modified_gmt":"2026-02-04T13:07:34","slug":"replacement-heifer-calculator","status":"publish","type":"page","link":"https:\/\/dr-nutrition.ca\/?page_id=328","title":{"rendered":"Replacement Heifer Calculator"},"content":{"rendered":"\n\n\n\n \n \n Advanced Replacement Heifer Calculator<\/title>\n \n \n <script src=\"https:\/\/cdn.tailwindcss.com\"><\/script>\n \n \n <link rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\">\n <link rel=\"preconnect\" href=\"https:\/\/fonts.gstatic.com\" crossorigin>\n <link href=\"https:\/\/fonts.googleapis.com\/css2?family=Inter:wght@400;500;600;700&display=swap\" rel=\"stylesheet\">\n \n <style>\n \/* Custom styles to enhance the UI *\/\n body {\n font-family: 'Inter', sans-serif;\n }\n \n \/* Custom tooltip for info icons *\/\n .tooltip {\n position: relative;\n display: inline-block;\n }\n\n .tooltip .tooltiptext {\n visibility: hidden;\n width: 220px;\n background-color: #1f2937; \/* gray-800 *\/\n color: #fff;\n text-align: center;\n border-radius: 6px;\n padding: 8px;\n position: absolute;\n z-index: 1;\n bottom: 125%;\n left: 50%;\n margin-left: -110px;\n opacity: 0;\n transition: opacity 0.3s;\n font-size: 0.875rem;\n line-height: 1.25rem;\n box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);\n border: 1px solid #4b5563; \/* gray-600 *\/\n }\n\n .tooltip:hover .tooltiptext {\n visibility: visible;\n opacity: 1;\n }\n \n \/* Custom transition for result section *\/\n .results-hidden {\n max-height: 0;\n opacity: 0;\n transform: translateY(-20px);\n transition: all 0.5s ease-out;\n overflow: hidden;\n }\n \n .results-visible {\n max-height: 1500px; \/* Adjust as needed *\/\n opacity: 1;\n transform: translateY(0);\n transition: all 0.5s ease-in;\n }\n\n <\/style>\n<\/head>\n<body class=\"bg-gray-900 text-gray-200 antialiased\">\n\n <div class=\"container mx-auto p-4 sm:p-6 lg:p-8 max-w-7xl\">\n \n <header class=\"text-center mb-8\">\n <h1 class=\"text-3xl sm:text-4xl font-bold text-white tracking-tight\">Advanced Replacement Heifer Calculator<\/h1>\n <p class=\"mt-2 text-lg text-gray-400\">Analyze and compare herd replacement strategies with improved calculations.<\/p>\n <\/header>\n\n \n <main class=\"space-y-8\">\n \n <section class=\"bg-gray-800 p-6 rounded-lg shadow-lg border border-gray-700\">\n <h2 class=\"text-xl font-semibold mb-4 text-white\">Global Assumptions<\/h2>\n <div class=\"grid grid-cols-1 md:grid-cols-2 gap-6\">\n <div class=\"input-group\">\n <label for=\"dailyRearingCost\" class=\"flex items-center text-sm font-medium text-gray-400 mb-2\">\n Daily Rearing Cost per Heifer ($)\n <div class=\"tooltip ml-2\">\n <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"h-4 w-4 text-gray-500\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\">\n <path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z\" \/>\n <\/svg>\n <span class=\"tooltiptext\">The average daily cost to raise a heifer from birth to first calving (includes feed, vet, labor, etc.).<\/span>\n <\/div>\n <\/label>\n <input type=\"number\" id=\"dailyRearingCost\" value=\"3.00\" step=\"0.01\" class=\"w-full bg-gray-700 border border-gray-600 text-white rounded-lg p-2.5 focus:ring-2 focus:ring-blue-500 focus:border-blue-500 transition\">\n <\/div>\n <\/div>\n <\/section>\n\n \n <div class=\"grid grid-cols-1 lg:grid-cols-2 gap-8\">\n \n <div class=\"scenario bg-gray-800 p-6 rounded-lg shadow-lg border border-gray-700\">\n <h3 class=\"text-2xl font-bold mb-6 text-cyan-400\">Scenario 1: Current Strategy<\/h3>\n <div class=\"space-y-4\">\n <div class=\"input-group\">\n <label for=\"herdSize1\" class=\"flex items-center text-sm font-medium text-gray-400 mb-2\">Herd Size \n <div class=\"tooltip ml-2\">\n <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"h-4 w-4 text-gray-500\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\"><path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z\" \/><\/svg>\n <span class=\"tooltiptext\">Total number of mature cows in the herd.<\/span>\n <\/div>\n <\/label>\n <input type=\"number\" id=\"herdSize1\" value=\"500\" class=\"w-full bg-gray-700 border border-gray-600 text-white rounded-lg p-2.5 focus:ring-2 focus:ring-blue-500 focus:border-blue-500 transition\">\n <\/div>\n <div class=\"input-group\">\n <label for=\"cullRate1\" class=\"flex items-center text-sm font-medium text-gray-400 mb-2\">Annual Cull Rate (%)\n <div class=\"tooltip ml-2\">\n <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"h-4 w-4 text-gray-500\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\"><path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z\" \/><\/svg>\n <span class=\"tooltiptext\">Percentage of the herd culled or removed annually for any reason.<\/span>\n <\/div>\n <\/label>\n <input type=\"number\" id=\"cullRate1\" value=\"25\" class=\"w-full bg-gray-700 border border-gray-600 text-white rounded-lg p-2.5 focus:ring-2 focus:ring-blue-500 focus:border-blue-500 transition\">\n <\/div>\n <div class=\"input-group\">\n <label for=\"mortalityRate1\" class=\"flex items-center text-sm font-medium text-gray-400 mb-2\">Heifer Mortality & Non-Breeding Rate (%)\n <div class=\"tooltip ml-2\">\n <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"h-4 w-4 text-gray-500\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\"><path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z\" \/><\/svg>\n <span class=\"tooltiptext\">Percentage of heifers that are lost or fail to become pregnant between birth and calving.<\/span>\n <\/div>\n <\/label>\n <input type=\"number\" id=\"mortalityRate1\" value=\"15\" class=\"w-full bg-gray-700 border border-gray-600 text-white rounded-lg p-2.5 focus:ring-2 focus:ring-blue-500 focus:border-blue-500 transition\">\n <\/div>\n <div class=\"input-group\">\n <label for=\"ageAtCalving1\" class=\"flex items-center text-sm font-medium text-gray-400 mb-2\">Age at First Calving (months)\n <div class=\"tooltip ml-2\">\n <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"h-4 w-4 text-gray-500\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\"><path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z\" \/><\/svg>\n <span class=\"tooltiptext\">The average age in months when a heifer has her first calf.<\/span>\n <\/div>\n <\/label>\n <input type=\"number\" id=\"ageAtCalving1\" value=\"24\" class=\"w-full bg-gray-700 border border-gray-600 text-white rounded-lg p-2.5 focus:ring-2 focus:ring-blue-500 focus:border-blue-500 transition\">\n <\/div>\n <\/div>\n <\/div>\n\n \n <div class=\"scenario bg-gray-800 p-6 rounded-lg shadow-lg border border-gray-700\">\n <h3 class=\"text-2xl font-bold mb-6 text-green-400\">Scenario 2: Proposed Strategy<\/h3>\n <div class=\"space-y-4\">\n <div class=\"input-group\">\n <label for=\"herdSize2\" class=\"text-sm font-medium text-gray-400 mb-2 block\">Herd Size<\/label>\n <input type=\"number\" id=\"herdSize2\" value=\"500\" class=\"w-full bg-gray-700 border border-gray-600 text-white rounded-lg p-2.5 focus:ring-2 focus:ring-blue-500 focus:border-blue-500 transition\">\n <\/div>\n <div class=\"input-group\">\n <label for=\"cullRate2\" class=\"text-sm font-medium text-gray-400 mb-2 block\">Annual Cull Rate (%)<\/label>\n <input type=\"number\" id=\"cullRate2\" value=\"20\" class=\"w-full bg-gray-700 border border-gray-600 text-white rounded-lg p-2.5 focus:ring-2 focus:ring-blue-500 focus:border-blue-500 transition\">\n <\/div>\n <div class=\"input-group\">\n <label for=\"mortalityRate2\" class=\"text-sm font-medium text-gray-400 mb-2 block\">Heifer Mortality & Non-Breeding Rate (%)<\/label>\n <input type=\"number\" id=\"mortalityRate2\" value=\"10\" class=\"w-full bg-gray-700 border border-gray-600 text-white rounded-lg p-2.5 focus:ring-2 focus:ring-blue-500 focus:border-blue-500 transition\">\n <\/div>\n <div class=\"input-group\">\n <label for=\"ageAtCalving2\" class=\"text-sm font-medium text-gray-400 mb-2 block\">Age at First Calving (months)<\/label>\n <input type=\"number\" id=\"ageAtCalving2\" value=\"22\" class=\"w-full bg-gray-700 border border-gray-600 text-white rounded-lg p-2.5 focus:ring-2 focus:ring-blue-500 focus:border-blue-500 transition\">\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n\n \n <div class=\"text-center pt-4\">\n <button onclick=\"calculateAndDisplay()\" class=\"bg-blue-600 hover:bg-blue-700 text-white font-bold py-3 px-8 rounded-lg shadow-md hover:shadow-lg transform hover:-translate-y-0.5 transition-all duration-300 ease-in-out\">\n Calculate & Compare\n <\/button>\n <\/div>\n\n \n <section id=\"resultsSection\" class=\"results-hidden space-y-8\">\n <div class=\"grid grid-cols-1 lg:grid-cols-3 gap-8 text-center\">\n \n <div class=\"bg-gray-800 p-6 rounded-lg border border-cyan-500\/50\">\n <h4 class=\"text-lg font-semibold text-cyan-400 mb-4\">Scenario 1 Results<\/h4>\n <p class=\"text-gray-400 text-sm\">Heifers to Develop Annually<\/p>\n <p id=\"heifersToDevelop1\" class=\"text-3xl font-bold text-white mb-4\">0<\/p>\n <p class=\"text-gray-400 text-sm\">Total Heifer Inventory<\/p>\n <p id=\"heiferInventory1\" class=\"text-3xl font-bold text-white mb-4\">0<\/p>\n <p class=\"text-gray-400 text-sm\">Total Annual Rearing Cost<\/p>\n <p id=\"totalCost1\" class=\"text-3xl font-bold text-white\"> $0<\/p>\n <\/div>\n\n \n <div class=\"bg-gray-800 p-6 rounded-lg border border-yellow-500\/50 flex flex-col justify-center items-center\">\n <h4 class=\"text-lg font-semibold text-yellow-400 mb-4\">Potential Annual Savings<\/h4>\n <p class=\"text-gray-400 text-sm\">Cost Savings<\/p>\n <p id=\"costSavings\" class=\"text-4xl font-bold text-white mb-4\">$0<\/p>\n <p class=\"text-gray-400 text-sm\">Fewer Heifers to Develop<\/p>\n <p id=\"heiferSavings\" class=\"text-4xl font-bold text-white\">0<\/p>\n <\/div>\n\n \n <div class=\"bg-gray-800 p-6 rounded-lg border border-green-500\/50\">\n <h4 class=\"text-lg font-semibold text-green-400 mb-4\">Scenario 2 Results<\/h4>\n <p class=\"text-gray-400 text-sm\">Heifers to Develop Annually<\/p>\n <p id=\"heifersToDevelop2\" class=\"text-3xl font-bold text-white mb-4\">0<\/p>\n <p class=\"text-gray-400 text-sm\">Total Heifer Inventory<\/p>\n <p id=\"heiferInventory2\" class=\"text-3xl font-bold text-white mb-4\">0<\/p>\n <p class=\"text-gray-400 text-sm\">Total Annual Rearing Cost<\/p>\n <p id=\"totalCost2\" class=\"text-3xl font-bold text-white\">$0<\/p>\n <\/div>\n <\/div>\n\n <\/section>\n \n \n <section class=\"bg-gray-800 p-6 rounded-lg shadow-lg border border-gray-700\">\n <h2 class=\"text-xl font-semibold mb-4 text-white\">Calculation Formulas<\/h2>\n <div class=\"space-y-3 text-gray-400\">\n <p><strong>1. Cows to Replace Annually:<\/strong> `Herd Size \u00d7 (Cull Rate \/ 100)`<\/p>\n <p><strong>2. Heifers to Develop Annually:<\/strong> `Cows to Replace \/ (1 – (Mortality Rate \/ 100))`<\/p>\n <p><strong>3. Total Heifer Inventory:<\/strong> `Heifers to Develop \u00d7 (Age at First Calving \/ 12)`<\/p>\n <p><strong>4. Total Annual Rearing Cost:<\/strong> `Total Heifer Inventory \u00d7 Daily Rearing Cost \u00d7 365.25`<\/p>\n <\/div>\n <\/section>\n <\/main>\n <\/div>\n\n <script>\n function calculateAndDisplay() {\n \/\/ --- 1. GATHER INPUTS ---\n const inputs = {};\n const ids = [\n 'dailyRearingCost', 'herdSize1', 'cullRate1', 'mortalityRate1', 'ageAtCalving1',\n 'herdSize2', 'cullRate2', 'mortalityRate2', 'ageAtCalving2'\n ];\n \n let allValid = true;\n ids.forEach(id => {\n const element = document.getElementById(id);\n const value = parseFloat(element.value);\n if (isNaN(value) || value < 0) {\n element.classList.add('border-red-500');\n allValid = false;\n } else {\n element.classList.remove('border-red-500');\n }\n inputs[id] = value;\n });\n\n if (!allValid) {\n \/\/ Optionally show an error message\n alert(\"Please ensure all fields contain valid, non-negative numbers.\");\n return;\n }\n\n \/\/ --- 2. PERFORM CALCULATIONS ---\n const calculateScenario = (herdSize, cullRate, mortalityRate, ageAtCalving, dailyCost) => {\n const cr = cullRate \/ 100;\n const mr = mortalityRate \/ 100;\n\n const cowsToReplace = herdSize * cr;\n const heifersToDevelop = cowsToReplace \/ (1 - mr);\n const heiferInventory = heifersToDevelop * (ageAtCalving \/ 12);\n const totalAnnualCost = heiferInventory * dailyCost * 365.25;\n\n return { heifersToDevelop, heiferInventory, totalAnnualCost };\n };\n \n const results1 = calculateScenario(inputs.herdSize1, inputs.cullRate1, inputs.mortalityRate1, inputs.ageAtCalving1, inputs.dailyRearingCost);\n const results2 = calculateScenario(inputs.herdSize2, inputs.cullRate2, inputs.mortalityRate2, inputs.ageAtCalving2, inputs.dailyRearingCost);\n\n const costSavings = results1.totalAnnualCost - results2.totalAnnualCost;\n const heiferSavings = results1.heifersToDevelop - results2.heifersToDevelop;\n\n \/\/ --- 3. UPDATE UI ---\n const formatCurrency = (value) => new Intl.NumberFormat('en-US', { style: 'currency', currency: 'USD', minimumFractionDigits: 0, maximumFractionDigits: 0 }).format(value);\n const formatNumber = (value) => new Intl.NumberFormat('en-US', { minimumFractionDigits: 1, maximumFractionDigits: 1 }).format(value);\n\n \/\/ Update result cards\n document.getElementById('heifersToDevelop1').textContent = formatNumber(results1.heifersToDevelop);\n document.getElementById('heiferInventory1').textContent = formatNumber(results1.heiferInventory);\n document.getElementById('totalCost1').textContent = formatCurrency(results1.totalAnnualCost);\n \n document.getElementById('heifersToDevelop2').textContent = formatNumber(results2.heifersToDevelop);\n document.getElementById('heiferInventory2').textContent = formatNumber(results2.heiferInventory);\n document.getElementById('totalCost2').textContent = formatCurrency(results2.totalAnnualCost);\n\n document.getElementById('costSavings').textContent = formatCurrency(costSavings);\n document.getElementById('heiferSavings').textContent = formatNumber(heiferSavings);\n\n \/\/ --- 4. SHOW RESULTS & UPDATE CHART ---\n const resultsSection = document.getElementById('resultsSection');\n resultsSection.classList.remove('results-hidden');\n resultsSection.classList.add('results-visible');\n\n \/\/ Scroll to results on smaller screens for better UX\n if(window.innerWidth < 768) {\n resultsSection.scrollIntoView({ behavior: 'smooth' });\n }\n\n }\n <\/script>\n<\/body>\n<\/html>\n\n\n","protected":false},"excerpt":{"rendered":"<p>Advanced Replacement Heifer Calculator Advanced Replacement Heifer Calculator Analyze and compare herd replacement strategies with improved calculations. Global Assumptions Daily Rearing Cost per Heifer ($) The average daily cost to raise a heifer from birth to first calving (includes feed,<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-328","page","type-page","status-publish","hentry"],"brizy_media":[],"_links":{"self":[{"href":"https:\/\/dr-nutrition.ca\/index.php?rest_route=\/wp\/v2\/pages\/328","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dr-nutrition.ca\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/dr-nutrition.ca\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/dr-nutrition.ca\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dr-nutrition.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=328"}],"version-history":[{"count":5,"href":"https:\/\/dr-nutrition.ca\/index.php?rest_route=\/wp\/v2\/pages\/328\/revisions"}],"predecessor-version":[{"id":1259,"href":"https:\/\/dr-nutrition.ca\/index.php?rest_route=\/wp\/v2\/pages\/328\/revisions\/1259"}],"wp:attachment":[{"href":"https:\/\/dr-nutrition.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=328"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}