Culled gilts and sows fulfil the higher age (>270 days) and weight (150 kg LW) required for the production of high quality salami. In a feeding trial involving 52 culled gilts and sows, a “salami feed” (11,8 MJ DE, 0,8 g PUFA/MJ DE, 193 mg vit. E) was tested with respect to the duration needed to also attain the desired finishing condition and back fat quality characterized by a low polyunsaturated fatty acid content (PUFA) and by a fat score of below 60. Sows were progressively allocated to the salami diet fed semi ad libitum. and were slaughtered batch-wise. This resulted in a wide range of litter number, slaughter weight and days on trial. During the conditioning period lasting on average 39 days, the sows ingested 3.88 kg of feed per day realizing a weight gain of 26 kg at a mean growth rate of 750 g/day. Compared to eight control sows without salami diet, mean fat score of back fat was lowered from 64.4 to 56.6, 85 % of treated sows were below a fat score of 60. The Ranzimat-value of 17.1 h underlines a good oxidation stability. The lowest fat scores were found after having fed at least 125 kg of salami feed during 35 – 55 days and gaining at least 20 kg of body weight. As sows conditioned for the salami production get a much higher price, the current price structure makes it profitable to finish culled sows prior to slaughter with a feed containing not more than 0.8 g of PUFA/MJ DE.
Which stakeholders in the dairy sector have an influence on the productive life of dairy cows? Research results from FiBL and Agroscope suggest that broad-based cooperation is needed to create structures for a longer productive life.
Agriculture is aiming to reduce greenhouse gas and ammonia emissions. Agroscope showed that for dairy cattle housing, feed composition plays a role in these emissions as well as wind and temperature.
Lazzari G., Münger A., Eggerschwiler L., Borda-Molina D., Seifert J., Camarinha-Silva A., Schrade S., Zähner M., Zeyer K., Kreuzer M., Dohme-Meier F.
Tannin-containing feedstuffs like Acacia mearnsii and sainfoin (Onobrychis viciifolia) have a measurable impact in reducing methane emissions from dairy cows. However, since these feedstuffs in some cases lead to productivity losses, careful consideration must be given to their use.