Phosphorus supplementation improves the growth and reproductive performance of female Brahman cattle grazing phosphorus-deficient pastures in the Victoria River District, Northern Territory, Australia

Autor: T. J. Schatz, K. D. McCosker, C. Heeb
Rok vydání: 2023
Předmět:
Zdroj: Animal Production Science. 63:544-559
ISSN: 1836-5787
1836-0939
DOI: 10.1071/an21565
Popis: Context There is a paucity of information on the responses to phosphorus (P) supplementation of breeder herds grazing P-deficient rangelands in northern Australia. Aims A study examined the production and economic benefits of P supplementation of Brahman females grazing P-deficient pastures in the Northern Territory (NT) of Australia. Methods Two treatment groups (initially n ~ 90) grazed two similar P-deficient paddocks for 5 years after weaning (at approximately 6 months of age). Management was the same except that the loose lick mineral supplement either contained P (+P) or did not contain P (−P). Performance attributes were measured from commencement until after the cows had the opportunity to calve during three successive annual cycles. Key results The cows in the +P treatment were overall heavier (P
Databáze: OpenAIRE
Externí odkaz:
Nepřihlášeným uživatelům se plný text nezobrazuje