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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
28/07/1995 |
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Data da última atualização: |
17/11/2011 |
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Autoria: |
LITTLE, D. A. |
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Título: |
Effects of dry season supplements of protein and phosphorus to pregnant cows on the incidence of first post-partum oestrus. |
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Ano de publicação: |
1975 |
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Fonte/Imprenta: |
Australian Journal of Experimental Agricultural and Animal Husbandry, v.15, p.25-31, Feb. 1975. |
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Idioma: |
Inglês |
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Conteúdo: |
Pregnant multiparous Nrahman cross cows grazing native pasture at Samfod in south-east Queensland were allotted to three treatment groups in late winter; one group received a daily supplement of 180 g crude protein (as peanut meal) plus 10 g phosphorus (P), the second group 10 g P and the third (control) group neither protein nor P. The P and control groups received approximately 320 g DOM per day, mainly composed of sugar and grain, to balance the DOM provided to the protein + P group as peanut meal. Supplementation continued for a period approximately spanning the third to eighth months of gestation. The protein plus phosphorus supplement significantly reduced the interval from calving to first post-parum oestrus by 46 per cent; all animals in this groups had exhibited oestrus within two months of calving. By three months after calving, only 50 per cent of controls and 70 per cent of those given phosphorus had exhibited oestrus. Calf growth was unaffected by the supplements. Samples of grazed pasture were collected using non-pregnant cows with aoesophageal fistulae. The provision of P or P plus proteinaa tended to rendera the anaimals less selective in their grazing. The evidence suggested that the higher feed requirements of the pregnant cows removeda any possible effect of the suppelemnts on their selectivity. Native pasture provided a slightly sub maintenance rationa during the period of supplementationa, and a major limiting nutrient appeared to be protein. |
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Palavras-Chave: |
Bovine; Estacao seca; Protein; Reproductionm. |
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Thesagro: |
Bovino; Fósforo; Proteína; Reprodução. |
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Thesaurus Nal: |
dry season; phosphorus. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02192naa a2200241 a 4500
001 1785123
005 2011-11-17
008 1975 bl --- 0-- u #d
100 1 $aLITTLE, D. A.
245 $aEffects of dry season supplements of protein and phosphorus to pregnant cows on the incidence of first post-partum oestrus.
260 $c1975
520 $aPregnant multiparous Nrahman cross cows grazing native pasture at Samfod in south-east Queensland were allotted to three treatment groups in late winter; one group received a daily supplement of 180 g crude protein (as peanut meal) plus 10 g phosphorus (P), the second group 10 g P and the third (control) group neither protein nor P. The P and control groups received approximately 320 g DOM per day, mainly composed of sugar and grain, to balance the DOM provided to the protein + P group as peanut meal. Supplementation continued for a period approximately spanning the third to eighth months of gestation. The protein plus phosphorus supplement significantly reduced the interval from calving to first post-parum oestrus by 46 per cent; all animals in this groups had exhibited oestrus within two months of calving. By three months after calving, only 50 per cent of controls and 70 per cent of those given phosphorus had exhibited oestrus. Calf growth was unaffected by the supplements. Samples of grazed pasture were collected using non-pregnant cows with aoesophageal fistulae. The provision of P or P plus proteinaa tended to rendera the anaimals less selective in their grazing. The evidence suggested that the higher feed requirements of the pregnant cows removeda any possible effect of the suppelemnts on their selectivity. Native pasture provided a slightly sub maintenance rationa during the period of supplementationa, and a major limiting nutrient appeared to be protein.
650 $adry season
650 $aphosphorus
650 $aBovino
650 $aFósforo
650 $aProteína
650 $aReprodução
653 $aBovine
653 $aEstacao seca
653 $aProtein
653 $aReproductionm
773 $tAustralian Journal of Experimental Agricultural and Animal Husbandry$gv.15, p.25-31, Feb. 1975.
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Registro original: |
Embrapa Pantanal (CPAP) |
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