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RESEARCH ARTICLE
Contents Vol 45(1)

Seasonality of calving in pasture-based dairy systems: its effects on herbage production, utilisation and dry matter intake

S. C. García A C and C. W. Holmes B
+ Author Affiliations
- Author Affiliations

A Faculty of Veterinary Science, The University of Sydney, MC Franklin Laboratory, Werombi Road, Camden, NSW 2570, Australia.

B Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Private Bag 11–222, Palmerston North, New Zealand.

C Corresponding author. Email: sgarcia@usyd.edu.au

Australian Journal of Experimental Agriculture 45(1) 1-9 https://doi.org/10.1071/EA00110
Submitted: 1 August 2000  Accepted: 9 March 2004   Published: 21 February 2005

Abstract

The objectives of the present work were to evaluate the influence of season of calving on (i) pasture productivity, (ii) total dry matter intake by cows, and (iii) the relationship between intake and milk yield of individual cows. Three systems in which the cows calved either in autumn, in spring or half in autumn, half in spring, were managed according to a set of common guidelines during 3 consecutive years. Herbage accumulation rate (HAR) was estimated by the difference between 2 successive grazings (pre- and post-grazing herbage mass). Average HAR in each month was similar between systems. However, small differences in HAR were observed between calving systems in spring and summer, and appeared to be related to the proportion of the farmlet closed for silage. Herbage dry matter intakes varied seasonally (P<0.05), but independently of the calving system (P>0.05). Cows from different calving systems, offered 8.9 or 2.5 kg maize silage dry matter per cow daily in the paddocks, consumed an average of 6.0 and 1.4 kg, respectively. A large variation in intake was observed between individual cows with ranges from 2 to 10 kg and 0.2 to 2.9 kg, respectively. In conclusion, applying the same grazing management decisions to systems with contrasting calving dates resulted in only small seasonal, but not annual, differences in pasture HAR. The results also indicated that when maize silage is fed in the paddock, wastage can be high and variation in intake between individual cows can also be large.


Acknowledgments

The authors thank Professor W. J. Fulkerson for the revision of this paper and for his useful suggestions and comments.


References


Bauman DE, Currie WB (1980) Partitioning of nutrients during pregnancy and lactation: a review of mechanisms involving homestoasis and homeorhesis. Journal of Dairy Science 63, 1514–1529.
| PubMed |
open url image1

Bibby J , Toutenburg H (1977) ‘Prediction and improved estimation in linear models.’ (John Wiley & Sons: Chichester)

Bishop-Hurley GJ (1999) An evaluation of a dairy systems study of the effects of contrasting spring grazing managements on pasture and animal performance. PhD Thesis, Massey University, Palmerston North, NZ.

Bishop-Hurley GJ , Matthews PNP , Hodgson J , Dake C , Matthew C (1997) Dairy systems study of the effects of contrasting spring grazing managements on pasture and animal production. In ‘Proceedings of the New Zealand Grassland Association’. pp. 209–214. (New Zealand Grassland Association: Wellington, NZ)

Corson DC , Waghorn GC , Ullyat MJ , Lee J (1999) NIRS: forage analysis and livestock feeding. In ‘Proceedings of New Zealand Grassland Association’. pp. 127–132. (New Zealand Grassland Association: Wellington, NZ)

Cosgrove GP , Betteridge K , Thomas VJ , Corson DC (1998) A sampling strategy for estimating dairy pasture quality. In ‘Proceedings of the New Zealand Society of Animal Production’. (Ed. PG Elvidge) pp. 25–28. (New Zealand Society of Animal Production: Hamilton, NZ)

Curtis KMS, Holst PJ, Murray PJ (1994) Measuring supplement intake in the field using ytterbium as a marker. Australian Journal of Experimental Agriculture 34, 339–343.
| Crossref |
open url image1

Da Silva SC , Matthew C , Matthews PNP , Hodgson J (1993) Influence of spring grazing management on summer and autumn production of dairy pastures. In ‘Proceedings of the 17th international grassland congress’. pp. 859–860. (New Zealand)

Dove H, Mayes RW (1991) The use of plant wax alkanes as marker substances in studies of the nutrition of herbivores: a review. Australian Journal of Agricultural Research 42, 913–952.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Fulkerson WJ, Donaghy DJ (2001) Plant-soluble carbohydrate reserves and senescence-key criteria for developing an effective grazing management system for ryegrass-based pastures: a review. Australian Journal of Experimental Agriculture 41, 261–275.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Fulkerson WJ, Michell PJ (1987) The effect of height and frequency of mowing on the yield and composition of perennial ryegrass–white clover swards in the autumn to spring period. Grass and Forage Science 42, 169–174. open url image1

García SC , Cayzer FJ , Holmes CW , MacDonald A (1998) The effect of calving season on milk production. A systems study. In ‘Proceedings of the New Zealand Society of Animal Production’. pp. 61–63. (New Zealand)

García SC, Holmes CW (1999) Effects of time of calving on the productivity of pasture-based dairy systems: a review. New Zealand Journal of Agricultural Research 42, 347–362. open url image1

García SC, Holmes CW (2001) Lactation curves of autumn- and spring-calved cows in pasture-based dairy systems. Livestock Production Science 68, 189–203.
| Crossref | GoogleScholarGoogle Scholar | open url image1

García SC, Holmes CW, Hodgson J, MacDonald A (2000a) The combination of the n-alkanes and 13C techniques to estimate individual dry matter intakes of herbage and maize silage by grazing dairy cows. Journal of Agricultural Science, Cambridge 135, 47–55.
| Crossref | GoogleScholarGoogle Scholar | open url image1

García SC, Holmes CW, MacDonald A, Lundman M, Lundman J, Pacheco-Navarro R (2000b) Comparative efficiency of autumn and spring calving for pasture-based dairy systems. Asian–Australasian Journal of Animal Science 13(Supplement), 533–537. open url image1

Holmes CW , Wilson GF , Mackenzie DDS , Flux DS , Brookes IM , Davey AWF (1987) Nutrition: Quantitative requirements of dairy cattle. In ‘Milk production from pasture’. (Eds CW Holmes, GF Wilson) pp. 107–130. (Butterworths Agricultural Books: Wellington, NZ)

Holst PJ, Curtis KMS, Hall DG (1994) Methods of feeding grain supplements and measuring their intake by adult sheep. Australian Journal of Experimental Agriculture 34, 345–348.
| Crossref |
open url image1

Leaver JD, Fraser D (1989) A systems study of high and low concentrate inputs for dairy cows: grassland production and utilisation over four years. Research and Development in Agriculture 6, 183–189. open url image1

Lemaire G , Chapman D (1996) Tissue flows in grazed plant communities. In ‘The ecology and management of grazing systems’. (Eds J Hodgson, AW Illius) pp. 3–36. (CABI: Wallingford, UK)

Littell RC, Henry PR, Ammerman CB (1998) Statistical analysis of repeated measures data using SAS procedures. Journal of Animal Science 76, 1216–1231.
| PubMed |
open url image1

Michell P (1982) Value of a rising-plate meter for estimating herbage mass of grazed perennial ryegrass-white clover swards. Grass and Forage Science 37, 81–87. open url image1

Oliveira DE, Manella MQ, Boin C, Lanna DPD, Demarchi JJAA, Alleoni GF (2002) Evaluation of a controlled-release capsule of n-alkanes for studies with ruminants. Journal of Animal Science 80(Supplement 1), 270.
| PubMed |
open url image1

Robson MJ , Ryle GJA , Woledge J (1988) The grass plant — its form and function. In ‘The grass crop: the physiological basis of production’. (Eds MB Jones, A Lazenby) pp. 25–83. (Chapman and Hall: London)

SAS (1997) ‘SAS/STAT® Software: changes and enhancements through release 6.12.’ (SAS Institute Inc.: Cary, NC)

Standing Committee on Agriculture (1990) ‘Feeding standards for Australian livestock: ruminants.’ (CSIRO, Australian Agricultural Council)

Wales WJ, Doyle PT, Stockdale CR, Dellow DW (1999) Effects of variations in herbage mass, allowance, and level of supplement on nutrient intake and milk production of dairy cows in spring and summer. Australian Journal of Experimental Agriculture 39, 119–130.
| Crossref | GoogleScholarGoogle Scholar | open url image1