Kristen Ryan, Bathgate Roslyn, Cronin Greg M, Hall Evelyn, Possell Malcolm, O'Shea Cormac John
School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Sydney, NSW 2006, Australia.
Sydney School of Veterinary Sciences, Faculty of Science, The University of Sydney, Sydney, NSW 2006, Australia.
Animals (Basel). 2024 Apr 23;14(9):1263. doi: 10.3390/ani14091263.
Iron injections are vital but imperfect against iron deficiency anaemia (IDA). This experiment explored the effects on piglets of maternal flavour conditioning and the voluntary intake of anise flavoured, iron-supplemented creep feed compared with iron injections. The experiment was a 2 × 2 factorial arrangement: ±maternal exposure to dietary anise flavour and ±intramuscular injections of piglets. Twenty-three sows and their litters (242 piglets) were randomly allocated to one of four treatments ( = 5 or 6 per treatment): no flavour plus no injection (NF + NI); no flavour plus iron injection (NF + I); flavour plus no injection (F + NI); and flavour plus iron injection (F + I). All piglets could access anise flavoured, iron-supplemented creep feed (organic and inorganic forms) from D2 of birth. Sow feed intake and milk anethole concentration, piglet body weight (BW) and average daily gain (ADG), creep feed disappearance, piglet behavioural time budgets, and piglet blood glucose and haemoglobin concentrations were determined. Over the four-week study, the only significant differences found were that iron-injected piglets had reduced blood glucose ( = 0.036) on D14 and that maternal flavour provision increased the frequency of piglet creep feed interaction ( = 0.023) and decreased the frequency of suckling events ( = 0.009). In summary, maternal flavour conditioning reduced piglet creep feed neophobia without influencing consumption. The supplementation of creep feed with iron and anise flavour to piglets under the conditions of this trial was effective in preventing IDA, regardless of exposure to maternal flavouring conditioning.
铁注射剂对于缺铁性贫血（IDA）至关重要但并不完美。本实验探讨了母体风味调节以及与铁注射剂相比，仔猪自愿摄入茴芹风味的补铁开食料的效果。实验采用2×2析因设计：母体±接触日粮茴芹风味以及仔猪±肌肉注射。23头母猪及其仔猪（共242头仔猪）被随机分配到四种处理之一（每个处理n = 5或6）：无风味加无注射（NF + NI）；无风味加铁注射（NF + I）；有风味加无注射（F + NI）；有风味加铁注射（F + I）。所有仔猪从出生第2天起都可以获取茴芹风味的补铁开食料（有机和无机形式）。测定了母猪采食量和乳中茴香脑浓度、仔猪体重（BW）和平均日增重（ADG）、开食料消耗量、仔猪行为时间分配以及仔猪血糖和血红蛋白浓度。在为期四周的研究中，发现的唯一显著差异是，注射铁剂的仔猪在第14天血糖降低（P = 0.036），并且母体提供风味增加了仔猪与开食料相互作用的频率（P = 0.023），并降低了吮乳事件的频率（P = 0.009）。总之，母体风味调节减少了仔猪对开食料的新物恐惧症，而不影响其摄入量。在本试验条件下，给仔猪的开食料补充铁和茴芹风味可有效预防IDA，无论是否接触母体风味调节。
