The importance of a high feed intake during lactation of primiparous sows nursing large litters.
The importance of a high feed intake during lactation of primiparous sows nursing large litters.
复制标题
DOI：
10.2527/2003.813594x
复制
发表时间：
2003-03
影响因子：
3.3
通讯作者：
J. Eissen;E. Apeldoorn;E. Kanis;M. Verstegen;K. H. D. Greef
中科院分区：
文献类型：
--
作者：
J. Eissen;E. Apeldoorn;E. Kanis;M. Verstegen;K. H. D. Greef
本研究的目的是调查喂养大量仔猪是否会对初产母猪的泌乳和断奶后性能产生负面影响，以及增加泌乳期采食量是否可以防止可能的负面影响。在一项实验中，记录了 268 头三种基因型（G1、G2 和 G3）随意饲喂母猪的数据，其中在 4 周的哺乳期间产仔数标准化为 8、11 或 14 头仔猪。与 G1 和 G2 相比，G3 母猪体重较重（P 9.8 头仔猪 (P < 0.01)。母猪的体重减轻和窝增重随窝产仔数线性增加 (P < 0.001)。每多喂一头仔猪，母猪断奶至发情间隔时间延长的可能性就增加 23% (P < 0.01)。泌乳期间每日采食量较高，可减少仔猪组织损失。母猪的窝增重增加（P < 0.01），并减少断奶至发情间隔时间延长的可能性（每增加一公斤，减少 42%；P < 0.01）。在第一次泌乳期间每日体重损失较低的母猪，其第二窝仔猪数量较多（1.28 头仔猪/公斤；P < 0.01），并且断奶至发情间隔时间延长的可能性每公斤减少 61%。 (P < 0.001)。因此，随着窝产仔数的增加，建议通过刺激每日采食量和遗传选择来减少哺乳期间的体重损失。
The objective of this study was to investigate whether nursing a large number of piglets has negative effects on lactation and postweaning performance of primiparous sows and whether a greater lactation feed intake can prevent possible negative effects. Data were recorded on 268 ad libitum-fed sows of three genotypes (G1, G2, and G3) in an experiment where litter size was standardized to 8, 11, or 14 piglets during a 4-wk lactation. Compared to G1 and G2, G3 sows were heavier (P 9.8 piglets (P < 0.01). Body weight loss of the sow and litter weight gain increased linearly with litter size (P < 0.001). Per extra piglet nursed, sows had a 23% (P < 0.01) higher probability of a prolonged weaning-to-estrus interval. A higher daily feed intake during lactation reduced tissue loss of the sow, increased litter weight gain (P < 0.01), and reduced the probability of a prolonged weaning-to-estrus interval (by 42% per extra kilogram; P < 0.01). Sows with a lower daily body weight loss during first lactation had a larger second litter (1.28 piglets/kg; P < 0.01), and their probability of a prolonged weaning-to-estrus interval was reduced by 61% per kilogram (P < 0.001). With increasing litter size, it is therefore recommended to reduce body weight loss during lactation by stimulating daily feed intake and by genetic selection.