January 2009 has not been the best month on the farm, but inspite of some bad mojo, I decided to try feeding baleage for the first time.
Baleage is based on the ensiling principle, but in a bale of hay instead of a silo. Baleage is hay that is baled at high moisture (40%-60% — dry hay is baled anywhere from 12% to 18% or maybe, but it is pushing it unless a propionic acid preservative spray is used, 20% or a bit higher) very tightly in a round bale and then wrapped in multiple layers of plastic, at least four layers. The plastic wrap and tightly wrapped bale keep oxygen out of the hay. The lack of oxygen and the high moisture encourages the anaerobic bacteriological (lacto bacilus) fermentation, or pickling, of the hay. The pH of properly made baleage should be below 4.0. The baleage is stable until the plastic wrap is removed. Once removed, the bale will spoil in one to two days in warm weather, but it can last for four or five days in cold weather.
Baleage is a high quality, high protein feed. The fermentation process either adds protein or preserves protein that would usually be lost in dry preservation, I don’t know which. Regardless, baleage is a high protein forage, the exact protein content depending on the mix of grass and legumes in the hay. The baleage I am feeding right now, which is just a first cutting grass baleage is about 14% protein. In a few weeks as the sheep approach six weeks before lambing, I will switch to a 16% protein baleage that is second cutting from a grass-alfalfa field. In addition to additional protein, the alfalfa adds additional types and greater quantities of vitamins and minerals. The hay in the second cutting of the field is also finer, less stemmy, so it is more palatable. The last six weeks of gestation are critical for the development of the lambs, and the ewes need the additional protein and vitamins and minerals to meet the demands of the rapidly developing lambs.
However, there is a risk in feeding baleage (or any ensiled feed), less to cows, more to sheep and goats. Improperly “pickled” baleage can harbor and promote the proliferation of the Lysteria monocytogenes bacterium. Infection with lysteria bacteria results in listeriosis, an unpleasant and usually deadly infection.
Before making the decision to feed baleage, I queried a small ruminant (sheep and goats) listserve that I am subscribed to in order to see how real a danger baleage presents. I interpreted the consensus to be that carefully fed (make sure it is well pickled and avoid moldy baleage) baleage is an excellent feed and the risk of listeriosis is low. However, if there is a listeriosis infection, it is possible to lose quite a few animals quite quickly.
So, having weighed the risks and benefits, I decided to give it a try. I am getting fifteen to twenty bales from a guy I know one town over. Each bale weighs about 1,000 pounds, but because of the high moisture content (40% in these bales), there is only 600 pounds of dry matter in each bale, and feed amounts are calculated on a dry matter basis. A sheep or a goat will eat three to five pounds of dry matter per day depending on its stage of production (open, gestating, lactating, growing). I have twenty-five sheep, and currently ten goats, so they will eat about 140 pounds of dry matter per day. In addition, I will be feeding the baleage to the pigs (for the same reasons, good protein, good vitamins and minerals), the twelve of whom will eat two to three pounds a piece, maybe a bit more. The total consumption will therefore be about 170 pounds of dry matter, meaning that one bale will last for three and a half days. When I get rid of the goats — hopefully soon, although I can’t quite bring myself to advertise them — I may run into a problem, but hopefully it will stay cold enough that I don’t end up with spoilage. Spoiling baleage heats up, so it is obvious.
This baleage feeding is definitely an experiment. If I have a single case of listeriosis, if it does not save me money, if the animals don’t do better on it than they would on a good quality second or later cutting alfalfa-grass dry hay, then I will not feed it again. Baleage is not an environmentally sound preserved forage. It creates a tremendous amount of plastic waste. A few pounds of thin plastic sheeting are used in each bale. Therefore, the benefits of feeding it need to be very high to outweigh the cost of production of such waste.
I opened the first bale yesterday. The first thing you notice about baleage is the smell. It smells sweet, so good you almost want to chow down on it yourself. The first cutting of this hay was pretty late, so the baleage is pretty stemmy, but the roughage will do the sheep and goats good. Because I am feeding the baleage to two groups of sheep, two groups of goats, and one group of pigs, I can’t just put a bale out in the field for the sheep to eat free choice. Instead, I stood the bale on one flat end out by the large group of sheep and have been unrolling “sheets” of hay from the bale, which I walk out to the big group of sheep and take out to the other animals in a wheel barrow (the hay is compressed and rolled up like cash register tape, so each sheet is only a couple of inches thick). One turn around the bale seems to weight about forty pounds, or twenty-four pounds, on a dry matter basis, which is about right for the big group of sheet, when I feed them three times a day, if they ate it all. But, they don’t, they reject some, either because it is too stemmy or because they have trampled it, so to make up for the waste, I am giving them a turn and a half. When the sheets unroll without a struggle, feeding this way doesn’t take any longer than if I were feeding small square bales. However, the snow was deeper than I thought where I set this bale, and it is standing kind of cockeyed, which is putting pressure on the lower parts of the bale, making it hard, impossible, actually, to unroll a full sheet without needing to struggle with the hay at the bottom of the bale. I am tearing the sheet at the point and then skipping that little section and starting back up on the other side.
The sheep dug right into the baleage, and so did the pigs. The goats, of course, just nibbled at it, but they will come around, especially because after the Coco and Buzi scare following close on the heels of Izzy’s death I am never ever feeding another single grain of grain to goats on this farm again, so if they don’t eat the baleage, they are going to get pretty hungry.