Comments for Brumm Speaks Out http://www.mnpork.com/forum Just another WordPress weblog Fri, 27 Apr 2012 18:48:34 +0000 http://wordpress.org/?v=2.9.2 hourly 1 Comment on SEW prices and new nursery designs by admin http://www.mnpork.com/forum/?p=335&cpage=1#comment-8188 admin Fri, 27 Apr 2012 18:48:34 +0000 http://www.mnpork.com/forum/?p=335#comment-8188 All of the available data on space for growing pigs suggests that 3.0 sqft/pig is adequate until pigs weigh about 52 pounds. Thus, if pigs are removed from a nursery or over-stocked wean-finish where they are housed at 3.0 sqft/pig prior to 50 pound liveweight, pen space would not be a limit to feed intake and daily gain. Four sqft/pig is thought to be adequate for pigs up to 77 lb bodyweight. In general, a small amount of space restriction is generally used as total weight gain per unit of space is higher even if daily gain begins to slow down. The general rule of thumb is that there is a 1% reduction in daily gain and daily feed intake with each 3% decrease in space allocation below the requirement for maximum pig performance on fully slatted floors. All of the available data on space for growing pigs suggests that 3.0 sqft/pig is adequate until pigs weigh about 52 pounds. Thus, if pigs are removed from a nursery or over-stocked wean-finish where they are housed at 3.0 sqft/pig prior to 50 pound liveweight, pen space would not be a limit to feed intake and daily gain. Four sqft/pig is thought to be adequate for pigs up to 77 lb bodyweight. In general, a small amount of space restriction is generally used as total weight gain per unit of space is higher even if daily gain begins to slow down. The general rule of thumb is that there is a 1% reduction in daily gain and daily feed intake with each 3% decrease in space allocation below the requirement for maximum pig performance on fully slatted floors.

]]> Comment on SEW prices and new nursery designs by Matthew http://www.mnpork.com/forum/?p=335&cpage=1#comment-8163 Matthew Tue, 24 Apr 2012 13:56:23 +0000 http://www.mnpork.com/forum/?p=335#comment-8163 Ventilation is obviously important in nursery facilities, especially with pigs having longer turns in the nursery. Taking into consideration that the ventilation is sized correctly, does having 4 square feet per pig have a positive effect on pig growth over the old rule of 3 feet per pig space? Ventilation is obviously important in nursery facilities, especially with pigs having longer turns in the nursery. Taking into consideration that the ventilation is sized correctly, does having 4 square feet per pig have a positive effect on pig growth over the old rule of 3 feet per pig space?

]]> Comment on SEW prices and new nursery designs by admin http://www.mnpork.com/forum/?p=335&cpage=1#comment-8147 admin Mon, 23 Apr 2012 17:30:17 +0000 http://www.mnpork.com/forum/?p=335#comment-8147 Curtain sided nurseries are quite common in the southeast. However, in the upper midwest we stay in heating mode and minimal ventilation much of the year and getting curtain sided barns tight enough is always a problem. In addition, curtains have almost no insulation capability so you would end up having to devise strategies to reduce heat loss thru the curtain wall that become time consuming to install/remove, etc. Curtain sided nurseries are quite common in the southeast. However, in the upper midwest we stay in heating mode and minimal ventilation much of the year and getting curtain sided barns tight enough is always a problem. In addition, curtains have almost no insulation capability so you would end up having to devise strategies to reduce heat loss thru the curtain wall that become time consuming to install/remove, etc.

]]> Comment on SEW prices and new nursery designs by Matthew http://www.mnpork.com/forum/?p=335&cpage=1#comment-8145 Matthew Mon, 23 Apr 2012 14:58:12 +0000 http://www.mnpork.com/forum/?p=335#comment-8145 Mike, is it ever possible to have a nursery design that is curtain sided, with the thought of getting enough air to the pigs especially in the summer and cutting down on electricity costs? Mike, is it ever possible to have a nursery design that is curtain sided, with the thought of getting enough air to the pigs especially in the summer and cutting down on electricity costs?

]]> Comment on SEW prices and new nursery designs by admin http://www.mnpork.com/forum/?p=335&cpage=1#comment-8083 admin Mon, 16 Apr 2012 14:15:58 +0000 http://www.mnpork.com/forum/?p=335#comment-8083 Removing pollutants won't change the sizing requirements since we are dealing with the large increase in heat production by today's improved pigs. The target for summer ventilation is to move enough air so room temperatures stay with 2-3F of outside temperatures. Removing pollutants won’t change the sizing requirements since we are dealing with the large increase in heat production by today’s improved pigs. The target for summer ventilation is to move enough air so room temperatures stay with 2-3F of outside temperatures.

]]> Comment on SEW prices and new nursery designs by Matt http://www.mnpork.com/forum/?p=335&cpage=1#comment-8008 Matt Fri, 06 Apr 2012 22:11:11 +0000 http://www.mnpork.com/forum/?p=335#comment-8008 Do you think removing half of the dust and H2S and ammonia from the air in the production room will help elevate some of these sizing concerns? Especially for those facilities already built with improper ventilation. Ionization treatment of the air can help. Do you think removing half of the dust and H2S and ammonia from the air in the production room will help elevate some of these sizing concerns? Especially for those facilities already built with improper ventilation.

Ionization treatment of the air can help.

]]> Comment on Some random thoughts and thanks by Matt http://www.mnpork.com/forum/?p=314&cpage=1#comment-7185 Matt Tue, 13 Dec 2011 21:03:06 +0000 http://www.mnpork.com/forum/?p=314#comment-7185 Well said Dr. Brumm. Will keep her in my prayers. Well said Dr. Brumm.

Will keep her in my prayers.

]]> Comment on Some random thoughts and thanks by Gary Apgar http://www.mnpork.com/forum/?p=314&cpage=1#comment-7180 Gary Apgar Mon, 12 Dec 2011 19:06:36 +0000 http://www.mnpork.com/forum/?p=314#comment-7180 Mike, So sorry to learn of Liz's health challenges. I'll keep you and your family in my prayers. Hope all else is well. Gary Mike,
So sorry to learn of Liz’s health challenges. I’ll keep you and your family in my prayers. Hope all else is well.
Gary

]]> Comment on Winter Ventilation Mistakes by admin http://www.mnpork.com/forum/?p=312&cpage=1#comment-7082 admin Fri, 25 Nov 2011 14:25:04 +0000 http://www.mnpork.com/forum/?p=312#comment-7082 The goal of furnace sizing is to have a furnace only large enough to just shut off on the coldest day of the year - that is - a furnace is big enough if it shuts off. The longer a furnace runs per burn cycle, the more uniform temperatures will be in the room being heated as the furnace fan is blowing air everywhere with the heated space and the temperature rise is gradual. As you suggest, I recommend furnaces with variable output valves (the 'blue' valve that is between the control module and the flame). Turn it to low at the beginning of the heating season. Begin turning it higher (more heat output) when the furnace doesn't shut off. IF the furnace shuts off, don't change the valve setting. In tunnel barns many set the furnace nearest to the tunnel curtain to a higher heat output - this results in more uniform room heating as the tunnel curtain end of the barn is often the coldest location in the barn. The goal of furnace sizing is to have a furnace only large enough to just shut off on the coldest day of the year – that is – a furnace is big enough if it shuts off. The longer a furnace runs per burn cycle, the more uniform temperatures will be in the room being heated as the furnace fan is blowing air everywhere with the heated space and the temperature rise is gradual.

As you suggest, I recommend furnaces with variable output valves (the ‘blue’ valve that is between the control module and the flame). Turn it to low at the beginning of the heating season. Begin turning it higher (more heat output) when the furnace doesn’t shut off. IF the furnace shuts off, don’t change the valve setting.

In tunnel barns many set the furnace nearest to the tunnel curtain to a higher heat output – this results in more uniform room heating as the tunnel curtain end of the barn is often the coldest location in the barn.

]]> Comment on Winter Ventilation Mistakes by Mike Weinzetl http://www.mnpork.com/forum/?p=312&cpage=1#comment-7076 Mike Weinzetl Thu, 24 Nov 2011 14:35:39 +0000 http://www.mnpork.com/forum/?p=312#comment-7076 Mike, Do you still suggest running heaters with 3 different gas valve settings at the lowest position for more uniform heating? Is so, when might a guy need to use the medium and high positions? Thank you Mike,

Do you still suggest running heaters with 3 different gas valve settings at the lowest position for more uniform heating? Is so, when might a guy need to use the medium and high positions?

Thank you

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