Week ending 7-9-20 farm notes:
PASTURES AND FEED
Pasture Growth Rate (PGR) for the week was 44 kg DM/ha/day and cover dropped to 2120 kg DM/ha.
Cows grazed 6 ha/day and we removed 5.5ha of silage from the farm which was ensiled with another 80 t DM of bought-in silage. These were paddocks that were for springers and colostrum cows that we couldn’t get through quick enough.
Pasture samples taken last week showed that Tom and the team have done an excellent job of pasture management with an average ME of 12.6, Dry Matter of 15%, Crude Protein at 26% DM (cows require CP >18 % DM for production up to 2.4 kg MS/cow/day), Neutral Detergent Fibre at 39% DM (cows require a minimum of 35% DM).
Daily demand is 54 kg DM/ha/day at peak. With growth rate still variable and pasture cover at a comfortable level we will be earmarking silage paddocks in the middle of the wedge. These may be paddocks that had a poor grazing event last round, would benefit from removal of K, or are best suited for silage making. Last season we made 139 t DM of silage on farm and purchased in another 90 t DM.
With only 15 cows left to calve we are at 96% calved after 9 weeks of calving.
Latest herd test results showed that the cows are producing an average of 2.28 kg MS/cow/day, with heifers averaging 1.8 kg MS/cow/day. We now have 12 cows on OAD to manage BCS loss.
Current cow demand is:
Maintenance = 57 MJ ME/cow/day
Milk production 2.2 kg MS x 77 = 170 MJ ME/cow/day
Walking 2 km/day on flat = 4 MJ ME/cow/day
Liveweight change 0.5 kg/day = -18.5 MJ ME/cow/day (assumes BCS loss of 0.5 BCS/month which is energy provided by the cow)
Total energy required 212.5 MJ ME/cow/day
With pasture currently over 12 ME this is equal to 17.7 kg DM eaten. With good grazing conditions we are offering 19 kg DM/cow day to achieve this (approx. 95% utilisation).
The DairyNZ Facts and Figures phone app has a handy calculator to work this all out for you.
We aim to maintain this level of intake for as long as possible. As the milk production drops off from peak, cows will reduce the rate of body weight loss if we can maintain good quality pasture for them to graze. During prolonged wet periods when cows reduce their grazing time, or utilisation of pasture is reduced, we offer more pasture and accept a higher residual 1700 kg DM/ha, or we can offer some PK to fill the gap.
We never use the Protein to Fat ratio alone to indicate whether cows are being under fed. We consider if:
Then these together indicate the cows’ energy balance has decreased and they are potentially being underfed in our system.
The Calcimol Molasses has run out now (10 t used in total) but we will still be giving limeflour to the colostrum cows. We will see how the milkers go without additional Ca before we look to add any more to their diet. We are still dusting with MgO for the milkers and without supplements being fed we are hoping not to need any more additional Ca for the milkers.
135 cows have cycled in the last two weeks since pre-mating heats have started. We are 17 days until PSM. We have budgeted for up to 15% of the herd to receive a CIDR. We won’t use sexed semen on these cows. We will have an idea of numbers after next week pre-mating analysis.
A second load of Wagyu calves left the farm last week and 45 heifer replacements have ventured outside onto the mobile calfeteria. They will get used to the fences and pasture with access to shelter in the calf shed before being moved on to their next paddock with a calf shelter. The second mob of 45 calves will then be ready to go outside.
Nothing to report
Nothing to report
Today more work is being done on the races around the yard entrance. In this high traffic zone we have been video recording animal movement and noticed the pot holes and loose stones that are appearing in these areas. With cows moving so effortlessly around the farm on the new race surfaces we certainly notice the areas that are uncomfortable for them to walk on. With only 10 lame cows recorded so far this season we are determined to continue the progress made. We have allocated $17k/year for race maintenance over and above any capital race work.
PEOPLE AND COMMUNITY
Tom and I are looking forward to catching up with you all at the next Focus Day on Wednesday 23rd September. We have developed a new format to fit with Level 2 requirements. We are offering two sessions: the morning (10.30am to 1pm) focused on information and discussions for farmers, and the afternoon (2pm to 3.30pm) a shortened version more suitable for rural professionals. This allows us to create more space and spread the numbers. You will be able to register your interest via the FB events once they are loaded. Registration is not compulsory.
We are looking forward to sharing with you a review of the season to date, analysis of the sexed semen/Wagyu calving, and we have Chris Tanner and James Sukias from NIWA discussing Edge-of-Field Actions to improve environmental outcomes.
PLANNING FOR THE MONTH AHEAD:
Cheers Jo + Tom
|Milk Production - Week ending||3/08/2020||10/08/2020||17/08/2020||24/08/2020||31/08/2020||7/09/2020||Variance|
|Cow's in milk||291||312||335||361||382||396||+1|
|Springer herd/dry cows||124||98||75||46||28||14||+14|
|Number of cows in big herd||265||158||177||197||220||232||-8|
|Number of cows in small herd||0||131||143||139||140||145||-5|
|Number of cows in colostrum herd||16||18||15||24||14||14||+14|
|Number of Cows in the Treatment/Sick herd||2||4||4||1||4||4||-3|
|KgMS/cow/day (cows in the vat only)||1.85||2.02||2.10||2.19||2.22||2.22||+.55|
|Milk production for week ending (kgMS)||3305.00||3402.00||4525.00||5095.00||5343.00||5704.00||+1098|
|Total milk production - YTD (kgMS)||6607.00||10009.00||15157.00||20582.00||25594.00||31298.00||-96474|
|Milk production per ha (kgMS/ha/day)||3.20||3.80||4.40||4.90||5.20||5.50||+.9|
|Total milk production per ha - YTD (kgMS/ha/YTD)||46.00||70.00||105.00||143.00||178.00||217.00||-670|
|Bulk Milk SCC (SCC x 1000)||132||113||131||134||126||145||+18|
|Animal Health - Week ending||3/08/2020||10/08/2020||17/08/2020||24/08/2020||31/08/2020||7/09/2020||Variance|
|BCS (average whole herd)||5.70||5.50||5.40||5.40||5.30||5.20||+.7|
|BCS (average heifers)||5.60||5.25||5.50||5.50||5.40||5.40||+.7|
|Lame cows - new cases||1||2||0||0||5||1||+1|
|Lame cows - YTD||2||4||4||4||9||10||-27|
|Mastitis - new cases||3||1||5||1||4||2||-|
|Mastitis - YTD||5||6||11||12||16||18||-31|
|Number of cows on penicillin||3||4||6||1||4||2||-|
|Number of cows on penicillin YTD||9||13||19||20||24||26||-39|
|Culls - new cases||0||4||0||0||0||0||-|
|Culls - YTD||0||4||4||4||4||4||-12|
|Deaths - new cases||1||1||0||0||0||0||-|
|Deaths - YTD||1||2||2||2||2||2||-2|
|Pasture Production - Week ending||3/08/2020||10/08/2020||17/08/2020||24/08/2020||31/08/2020||7/09/2020||Variance|
|Average pasture cover (kgDM/ha)||2405||2249||2190||2161||2242||2120||-63|
|Average pasture growth rates (kgDM/day)||25||23||38||43||65||44||+3|
|Lowest post graze residual (kgDM/ha)||1300||1400||1450||1500||1500||1500||-|
|Highest pre graze cover (kgDM/ha)||4000||3800||3100||3000||2800||2800||-400|
|Average area grazed/day for milkers (ha)||2.72||3.00||3.80||4.60||5.20||6.00||+3.3|
|Total Biomass Measured (kgDM) )|
|Supplementary Use - Week ending||3/08/2020||10/08/2020||17/08/2020||24/08/2020||31/08/2020||7/09/2020||Variance|
|Average PKE (kg/cow/day)||0.10||0.10||0.80||0.50||1.50||0.50||-1.5|
|Average maize (kg/cow/day)||0.00||0.00||0.00||0.00||0.00||0.00||-|
|Average silage (kg/cow/day)||0.50||0.30||0.30||0.30||0.30||0.10||-2.4|
|Silage usage YTD||12.20||13.20||11.80||12.30||13.20||13.50||-15.7|
|Silage Harvested Tonnes (DM)||0.00||0.00||0.00||0.00||0.00||14.80||+14.8|
|Total Supplement Feed (per cow kgDM)||38.80||42.00||43.80||48.60||63.10||67.30||+14.8|
|Total Supplement YTD (Tonnes)||15.70||17.00||17.80||19.70||25.60||27.30||-113.3|
|Nitrogen and Gibberellic Acid - Week ending||3/08/2020||10/08/2020||17/08/2020||24/08/2020||31/08/2020||7/09/2020||Variance|
|kgN applied per ha/% of farm||0.00 KgN/ 0.00 %||29.00 KgN/ 41.70 %||0.00 KgN/ 0.00 %||32.70 KgN/ 34.70 %||0.00 KgN/ 0.00 %||0.00 KgN/ 0.00 %||0.00 %|
|kgN applied YTD (average kgN/ha)||4.80||16.90||16.90||28.20||28.20||28.20||-48.4|
|GA applied (20gm/ha)||0.00||0.00||0.00||0.00||0.00||0.00||-|
|Effluent Applied y/n||N||Y||N||N||N||Y||-|
|Paddocks effluent applied||0||3||0||0||0||4||+4|
|Application Depth (mm)||0.00||18.00||0.00||0.00||0.00||18.00||-|
|Climate - Week ending||3/08/2020||10/08/2020||17/08/2020||24/08/2020||31/08/2020||7/09/2020||Variance|
|Temperature (ave. °C)||11.04||9.92||10.00||13.00||11.30||11.00||-10.5|
|Soil temperature (ave. °C at 10cm depth)||12.50||12.50||11.60||13.00||13.00||13.20||-8.8|
|Soil Moisture(% at 10cm depth)||33.50||33.90||33.70||34.10||34.10||34.70||+7.7|