#swine-gestation-calculator {
max-width: 600px;
margin: 20px auto;
padding: 15px;
background: #fff;
border-radius: 5px;
box-shadow: 0 1px 3px rgba(0,0,0,0.1);
font-family: -apple-system, BlinkMacSystemFont, ‘Arial’, sans-serif;
color: #333;
box-sizing: border-box;
}
h2 {
text-align: center;
margin: 0 0 15px;
font-size: 1.4rem;
line-height: 1.2;
color: #333;
}
p {
text-align: center;
color: #666;
font-size: 14px;
margin-bottom: 15px;
}
.form-group {
margin-bottom: 15px;
position: relative;
}
label {
display: block;
margin-bottom: 5px;
font-size: 0.9rem;
font-weight: 600;
}
input[type=”date”], input[type=”number”] {
width: 100%;
padding: 8px;
border: 1px solid #ddd;
border-radius: 3px;
font-size: 0.9rem;
box-sizing: border-box;
}
input:focus {
border-color: #0073aa;
outline: none;
}
.tooltip {
position: relative;
display: inline-block;
margin-left: 5px;
}
.tooltip .tooltip-text {
visibility: hidden;
width: 180px;
background: #333;
color: #fff;
text-align: center;
border-radius: 3px;
padding: 5px;
position: absolute;
z-index: 10;
bottom: 125%;
left: 50%;
transform: translateX(-50%);
opacity: 0;
transition: opacity 0.3s;
font-size: 0.75rem;
}
.tooltip:hover .tooltip-text {
visibility: visible;
opacity: 1;
}
.button-group {
display: flex;
gap: 10px;
justify-content: center;
margin-top: 15px;
}
button {
padding: 8px 16px;
border: none;
border-radius: 3px;
cursor: pointer;
font-size: 0.9rem;
background: #0073aa;
color: #fff;
}
button:hover {
background: #005177;
}
#reset-btn {
background: #6c757d;
}
#reset-btn:hover {
background: #5a6268;
}
#copy-btn {
background: #28a745;
}
#copy-btn:hover {
background: #218838;
}
#result {
margin-top: 15px;
padding: 10px;
border-radius: 3px;
font-size: 0.9rem;
line-height: 1.4;
min-height: 20px;
}
#result.success {
background: #e6f4ea;
border: 1px solid #28a745;
}
#result.error {
background: #f8d7da;
border: 1px solid #dc3545;
}
.progress-bar {
width: 100%;
background: #f0f0f0;
border-radius: 3px;
height: 20px;
margin-top: 10px;
overflow: hidden;
}
.progress-bar-fill {
height: 100%;
background: #28a745;
transition: width 0.3s ease;
}
.timeline {
margin-top: 10px;
font-size: 0.85rem;
}
.timeline div {
margin: 5px 0;
}
noscript {
display: block;
color: #dc3545;
text-align: center;
margin-top: 10px;
font-size: 0.9rem;
}
@media (max-width: 600px) {
#swine-gestation-calculator {
margin: 10px;
padding: 10px;
}
h2 {
font-size: 1.2rem;
}
.button-group {
flex-direction: column;
}
button {
width: 100%;
}
}
`;
resultDiv.innerHTML = `
Estimated Farrowing Date: ${formatDate(dueDate)}
Possible Farrowing Range: ${formatDate(minDueDate)} to ${formatDate(maxDueDate)}
Current Stage: ${daysElapsed >= 0 ? stage : ‘Pregnancy not yet started.’}
Progress:
Pregnancy Timeline: ${timeline}
Care Tips:
Swine Gestation Calculator
Estimate your sow’s farrowing date and track pregnancy stages.
Enter the breeding date, then click “Calculate”.
JavaScript is disabled. Please enable it to use the calculator.
(function() {
if (!document.getElementById(‘swine-gestation-calculator’)) return;
const form = document.getElementById(‘calc-form’);
const breedingDateInput = document.getElementById(‘breeding-date’);
const gestationPeriodInput = document.getElementById(‘gestation-period’);
const resultDiv = document.getElementById(‘result’);
function formatDate(date) {
return date.toLocaleDateString(‘en-US’, {
weekday: ‘long’,
year: ‘numeric’,
month: ‘long’,
day: ‘numeric’
});
}
function calculate() {
resultDiv.className = ”;
resultDiv.innerHTML = ”;
try {
const breedingDateStr = breedingDateInput.value;
const gestationDays = parseInt(gestationPeriodInput.value);
if (!breedingDateStr) {
throw new Error(‘Breeding date is required.’);
}
if (isNaN(gestationDays) || gestationDays 120) {
throw new Error(‘Gestation period must be between 112 and 120 days.’);
}
const breedingDate = new Date(breedingDateStr);
if (isNaN(breedingDate.getTime())) {
throw new Error(‘Invalid breeding date.’);
}
const dueDate = new Date(breedingDate);
dueDate.setDate(breedingDate.getDate() + gestationDays);
const minDueDate = new Date(breedingDate);
minDueDate.setDate(breedingDate.getDate() + 112);
const maxDueDate = new Date(breedingDate);
maxDueDate.setDate(breedingDate.getDate() + 120);
const today = new Date();
const daysElapsed = Math.floor((today – breedingDate) / (1000 * 60 * 60 * 24));
const progressPercent = Math.min((daysElapsed / gestationDays) * 100, 100);
const stage = daysElapsed <= 38 ? 'Early (Days 1–38): Embryo development, confirm pregnancy via ultrasound (day 24–35).' :
daysElapsed <= 76 ? 'Mid (Days 39–76): Fetus growth, sow’s belly enlarges.' :
'Late (Days 77–114): Rapid piglet growth, nesting behavior, move to farrowing crate (day 109).';
const timeline = `
Early Stage (Days 1–38): Pregnancy confirmable via ultrasound (day 24–35).
Mid Stage (Days 39–76): Noticeable belly growth, administer vaccines (day 60).
Late Stage (Days 77–114): Sow restless, prepare farrowing crate by day 109.
Possible Farrowing Range: ${formatDate(minDueDate)} to ${formatDate(maxDueDate)}
Current Stage: ${daysElapsed >= 0 ? stage : ‘Pregnancy not yet started.’}
Progress:
Pregnancy Timeline: ${timeline}
Care Tips:
- Provide balanced feed with extra protein in mid-to-late stages (day 40–100).
- Move sow to farrowing crate by day 109 for a clean, safe delivery.
- Monitor for no heat cycle (day 21) or restlessness; consult vet for ultrasound (day 24–35).
- Administer vaccines (e.g., E. coli, parvovirus) around day 60 and 100.