@conference {40346,
	title = {Wool growth in autumn and spring lambing ewes},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {51},
	year = {1991},
	month = {Jan},
	pages = {383-388},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Four trials in early to mid lactation investigated the effect of  supplementation with sodium bicarbonate on milk production from cows  grazing pasture. In Trial 1, 3 groups of 14 cows received 0, 100 g or  200 g NaHCO3/cow/day for 28 days. Trial 2 assessed whether any effects  of sodium carbonate were due to sodium by comparing no supplement, 200 g  NaHCO3/cow/day and 140 g NaC1 with three groups of 20 cows for 28 days.  In both trials treatments were administered by drenching at each  milking. Trial 3 assessed the importance of method of administration.  Treatments of no supplement, 100 g NaHCO3/cow/day by drenching at the  morning milking, or 100 g NaHCO3/cow/day in the drinking water were  administered to 3 groups of 20 cows, during three 21 day periods  according to a latin square design. Trial 4 compared rates of 0, 50,  and 100 g NaHCO3 via drinking water with 3 groups of 18 cows for 21  days.   In Trial 1 milk yield and protein yield were significantly reduced  (P<0.10) by drenching 200g NaHCO3/day, compared to the control cows  (14.,7 vs 15.3 kg milk/cow/day). The lower dose rate did not affect  milk yield or composition. In Trials 2 and 4, none of the treatments  significantly affected milk solid yields. Milk, protein and lactose  yields from cows on the trough treatment were higher than those for  control and drenched cows in Trial 3. Plasma magnesium was lower in  drenched cows than in control or trough treatment cows.  },
	issn = {1176-5283},
	author = {Reid TC and Sumner RMW}
}
