Department of Obstetrics, Gynaecology and Reproduction, Faculty of Veterinary Science, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand; Swine Reproduction Research Unit, Chulalongkorn University, Bangkok, Thailand.
Department of Obstetrics, Gynaecology and Reproduction, Faculty of Veterinary Science, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand.
Prev Vet Med. 2020 Aug;181:105085. doi: 10.1016/j.prevetmed.2020.105085. Epub 2020 Jul 2.
The present study aims to characterize the colostrum, milk yield and composition and to determine whether sow parity would influence yield and composition of colostrum and milk in Danish Landrace × Yorkshire crossbred sows. The data were collected from sow parity numbers 1 (n = 27), 2-4 (n = 48) and 5-6 (n = 30) from Danish Landrace × Yorkshire crossbred sows reared in a commercial swine herd in Thailand. The piglets were weighed on day 0 (<1 h), 1 (24 h), 3, 10 and 17 after birth to determine the colostrum and milk yields of the sows using a prediction equation. Milk samples were collected manually within 1 h of the onset of parturition and on days 3, 10 and 17 after farrowing to evaluate milk composition. A general linear model procedure was used to analyze the effects of sow parity numbers on colostrum yield and composition and a general linear mixed model procedure was used to analyze the effects of sow parity numbers on yield and composition of milk. The model included the fixed effects of sow parity number and time (day after parturition). The sow parity numbers 2-4 (7.0 kg) had a higher colostrum yield than 1st parity sows (5.4 kg, P = 0.002) and parity 5-6 sows (5.9 kg, P = 0.025). No evidence of parity differences was observed on milk yield (P = 0.306). No effect of sow parity numbers on fat, protein and lactose in milk was observed. The dry matter in sow parity numbers 2-4 (19.8 g/100 g) had a tendency to be higher than sow parity number 1 (18.6 g/100 g, P = 0.107) and 5-6 (18.4 g/ 100 g, P = 0.053). In conclusion, sow parity number had an impact on colostrum yield in Danish Landrace × Yorkshire crossbred sows in a tropical climate but did not influence colostrum, milk composition and milk yield. Colostrum yield in Danish Landrace × Yorkshire crossbred sows was the highest in sow parity numbers 2-4.
本研究旨在描述初乳的特性、产奶量和成分，并确定母猪胎次是否会影响丹麦长白猪×约克夏杂交母猪的初乳和奶产量和成分。数据来自于在泰国一个商业猪场饲养的丹麦长白猪×约克夏杂交母猪的胎次 1（n=27）、2-4（n=48）和 5-6（n=30）。在分娩后 0（<1 h）、1（24 h）、3、10 和 17 天，通过预测方程来确定母猪的初乳和奶产量，并通过产仔后 1 小时内和产仔后 3、10 和 17 天收集奶样来评估奶成分。使用一般线性模型程序分析母猪胎次对初乳产量和成分的影响，使用一般线性混合模型程序分析母猪胎次对奶产量和成分的影响。模型包括胎次和时间（产后天数）的固定效应。2-4 胎次（7.0 kg）的初乳产量高于 1 胎次母猪（5.4 kg，P=0.002）和 5-6 胎次母猪（5.9 kg，P=0.025）。在奶产量上未观察到胎次差异（P=0.306）。母猪胎次对奶中的脂肪、蛋白质和乳糖没有影响。2-4 胎次的干物质（19.8 g/100 g）略高于 1 胎次（18.6 g/100 g，P=0.107）和 5-6 胎次（18.4 g/100 g，P=0.053）。总之，在热带气候下，母猪胎次对丹麦长白猪×约克夏杂交母猪的初乳产量有影响，但对初乳、奶成分和奶产量没有影响。丹麦长白猪×约克夏杂交母猪的初乳产量在 2-4 胎次最高。
