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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
07/10/1996 |
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Data da última atualização: |
03/04/2017 |
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Autoria: |
RAKESTRAW, J.; LUSBY, K. S.; WETTEMANN, R. P.; WAGNER, J. J. |
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Título: |
Postpartum weight and body condition loss and performance of fall-calving cows. |
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Ano de publicação: |
1986 |
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Fonte/Imprenta: |
Theriogenology, v.26, n.4, p.461-473, Oct. 1986. |
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Idioma: |
Inglês |
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Conteúdo: |
A total of 166 mature fall-calving Hereford cows were used to study the effects of weight and body condition losses on the reproduction of cows and on the performance of their calves. This study was conducted before and during the breeding season over a 3-yr period. The cows calved in a good body condition and were assigned to one of the following treatment groups: the MM group to maintain weight from calving (September - October) throught breeding (December - January), the LM group to lose up to 10% of the postpartum weight from calving to the beginning of breeding and to maintain the weight during breeding, and the ML group to maintain weight from calving to the beginning of breeding and to, lose 10 - 15% of the postpartum weight during breeding. Weight losses were ajhusted by altering daily amounts of protein supplement and forage. Cows in the LM treatment group lost 3, 17 and 6% of their postpartum weight before breeding in yr 1, 2, and 3, respectively, and they had a 10-d longer (P<0.05) interval from calving to first estrus than MM or ML group cows. The percentage of cows with ovarian activity at the begginning of breeding was reduced (37 vs 64% P<0.01) for LM compared with MM cows. Treatment-by-year interactions were significant for pregnancy rate and ovarian activity at the end of breeding. In Year 1, ML cows lost 14% of portpartum weight during breeding and had reduced (P<0.01) pregnancy rates compared with MM or LM cows (50 vs 79 and 88%). Only 41% of ML cows in Year 1 had luteal activity after estrus compared to 93% for MM and 79% for LM cows. During Year 2, LM cows lost 17% of postpartum weight before breeding, while ML cows lost 6% of their postpartum weight before breedings and 11% during bredings. Preganancy rates tended to be reduced for both LM and ML cows cpmpared to MM cows (53 and 65 vs 87% P>0.10). The percentage of cows with ovarian activity and the end of breeding was reduced (P<0.05) for the LM treatment group and tended (P>0.10) to be lower for LM than for MM cows. In Year 3, pregnancy rates were greater (89, 84 and 85% for MM, LM and MM, respectively) for all groups. However, the percentage of cows with luteal activity after estrus was greater (P<0.05 for MM (94%) than for LM and ML (64 and 67%). Calf weaning weights (205 d in April) were not significantly influenced by treatment. We conclude that even if cows have adequate energy reserves at calving (good body) condition), optimal reproductive efficiency of fall-calving range cows cannot be ensured. MenosA total of 166 mature fall-calving Hereford cows were used to study the effects of weight and body condition losses on the reproduction of cows and on the performance of their calves. This study was conducted before and during the breeding season over a 3-yr period. The cows calved in a good body condition and were assigned to one of the following treatment groups: the MM group to maintain weight from calving (September - October) throught breeding (December - January), the LM group to lose up to 10% of the postpartum weight from calving to the beginning of breeding and to maintain the weight during breeding, and the ML group to maintain weight from calving to the beginning of breeding and to, lose 10 - 15% of the postpartum weight during breeding. Weight losses were ajhusted by altering daily amounts of protein supplement and forage. Cows in the LM treatment group lost 3, 17 and 6% of their postpartum weight before breeding in yr 1, 2, and 3, respectively, and they had a 10-d longer (P<0.05) interval from calving to first estrus than MM or ML group cows. The percentage of cows with ovarian activity at the begginning of breeding was reduced (37 vs 64% P<0.01) for LM compared with MM cows. Treatment-by-year interactions were significant for pregnancy rate and ovarian activity at the end of breeding. In Year 1, ML cows lost 14% of portpartum weight during breeding and had reduced (P<0.01) pregnancy rates compared with MM or LM cows (50 vs 79 and 88%). Only 41% of ML cows in Ye... Mostrar Tudo |
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Palavras-Chave: |
Fall calving. |
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Thesagro: |
Gado de Corte; Reprodução. |
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Thesaurus Nal: |
beef cattle; body condition; reproduction; weight loss. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03181naa a2200241 a 4500
001 1789806
005 2017-04-03
008 1986 bl --- 0-- u #d
100 1 $aRAKESTRAW, J.
245 $aPostpartum weight and body condition loss and performance of fall-calving cows.
260 $c1986
520 $aA total of 166 mature fall-calving Hereford cows were used to study the effects of weight and body condition losses on the reproduction of cows and on the performance of their calves. This study was conducted before and during the breeding season over a 3-yr period. The cows calved in a good body condition and were assigned to one of the following treatment groups: the MM group to maintain weight from calving (September - October) throught breeding (December - January), the LM group to lose up to 10% of the postpartum weight from calving to the beginning of breeding and to maintain the weight during breeding, and the ML group to maintain weight from calving to the beginning of breeding and to, lose 10 - 15% of the postpartum weight during breeding. Weight losses were ajhusted by altering daily amounts of protein supplement and forage. Cows in the LM treatment group lost 3, 17 and 6% of their postpartum weight before breeding in yr 1, 2, and 3, respectively, and they had a 10-d longer (P<0.05) interval from calving to first estrus than MM or ML group cows. The percentage of cows with ovarian activity at the begginning of breeding was reduced (37 vs 64% P<0.01) for LM compared with MM cows. Treatment-by-year interactions were significant for pregnancy rate and ovarian activity at the end of breeding. In Year 1, ML cows lost 14% of portpartum weight during breeding and had reduced (P<0.01) pregnancy rates compared with MM or LM cows (50 vs 79 and 88%). Only 41% of ML cows in Year 1 had luteal activity after estrus compared to 93% for MM and 79% for LM cows. During Year 2, LM cows lost 17% of postpartum weight before breeding, while ML cows lost 6% of their postpartum weight before breedings and 11% during bredings. Preganancy rates tended to be reduced for both LM and ML cows cpmpared to MM cows (53 and 65 vs 87% P>0.10). The percentage of cows with ovarian activity and the end of breeding was reduced (P<0.05) for the LM treatment group and tended (P>0.10) to be lower for LM than for MM cows. In Year 3, pregnancy rates were greater (89, 84 and 85% for MM, LM and MM, respectively) for all groups. However, the percentage of cows with luteal activity after estrus was greater (P<0.05 for MM (94%) than for LM and ML (64 and 67%). Calf weaning weights (205 d in April) were not significantly influenced by treatment. We conclude that even if cows have adequate energy reserves at calving (good body) condition), optimal reproductive efficiency of fall-calving range cows cannot be ensured.
650 $abeef cattle
650 $abody condition
650 $areproduction
650 $aweight loss
650 $aGado de Corte
650 $aReprodução
653 $aFall calving
700 1 $aLUSBY, K. S.
700 1 $aWETTEMANN, R. P.
700 1 $aWAGNER, J. J.
773 $tTheriogenology$gv.26, n.4, p.461-473, Oct. 1986.
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Registro original: |
Embrapa Pantanal (CPAP) |
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
11/01/2019 |
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Data da última atualização: |
08/01/2024 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
SILVA, I. S.; NOGUEIRA, E. T.; BARROS, A. P. A.; SANTOS, R. G. de B.; SILVA, L. F. da; BIASOTO, A. C. T. |
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Afiliação: |
ISLAINE SANTOS SILVA; ELIS TATIANE NOGUEIRA; ANA PAULA ANDRÉ BARROS; RENATA GOMES DE BARROS SANTOS; LAISE FERREIRA DA SILVA; ALINE TELLES BIASOTO MARQUES, CPATSA. |
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Título: |
Influência do uso de chip de carvalho francês na composição físico-química e colorimétrica de vinho tinto "Syrah". |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
In: ENCONTRO NACIONAL DA AGROINDÚSTRIA, 4., 2018, Bananeiras. Anais... Bananeiras: UFPB: CABA, 2018. |
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Idioma: |
Português |
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Conteúdo: |
A região do Vale do Submédio São Francisco (VSSF) é a segunda maior região produtora de vinhos elaborados com as cultivares Vitis vinifera do país, na qual a variedade Syrah destaca-se como a mais utilizada na região para a elaboração de vinhos tintos. Os vinhos elaborados com essa cultivar dispõem de alta capacidade de amadurecimento, para isso, avaliou-se o efeito da utilização de chips de carvalho francês de média tostagem na composição físico-química e colorimétrica de vinho tinto ?Syrah? elaborado no VSSF. Foram testados dois tratamentos, um de controle (sem utilização de chip) e o outro utilizando chip de carvalho francês de média tostagem (6g.L-1). Os parâmetros avaliados foram: pH, acidez total e volátil, açúcares redutores, densidade, dióxido de enxofre livre e total, teor alcóolico, extrato seco, índice de polifenóis totais, intensidade de cor, tonalidade, e análise colorimétrica pelo sistema CIELAB. Os resultados mostraram que a utilização de chip de carvalho francês pode contribuir para maiores estabilidades microbiológica e da cor dos vinhos em razão do menor valor de pH encontrado. Evidenciou-se que a utilização de chip influenciou significativamente nos parâmetros inerentes à cor, obtendo-se maior índice de polifenóis totais no vinho com emprego do chip de carvalho francês. |
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Palavras-Chave: |
Fragmentos de carvalho; Média tostagem; Polifenóis; Syrah; Vale do São Francisco; Vinho tropical. |
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Thesagro: |
Cor; Enologia; Vinho. |
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Thesaurus NAL: |
Polyphenols; Wine cultivars; Wine quality; Wines. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/190263/1/AC4-proceedings-IV-ENAG-98023.pdf
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Marc: |
LEADER 02335nam a2200325 a 4500
001 2103648
005 2024-01-08
008 2018 bl uuuu u00u1 u #d
100 1 $aSILVA, I. S.
245 $aInfluência do uso de chip de carvalho francês na composição físico-química e colorimétrica de vinho tinto "Syrah".$h[electronic resource]
260 $aIn: ENCONTRO NACIONAL DA AGROINDÚSTRIA, 4., 2018, Bananeiras. Anais... Bananeiras: UFPB: CABA$c2018
520 $aA região do Vale do Submédio São Francisco (VSSF) é a segunda maior região produtora de vinhos elaborados com as cultivares Vitis vinifera do país, na qual a variedade Syrah destaca-se como a mais utilizada na região para a elaboração de vinhos tintos. Os vinhos elaborados com essa cultivar dispõem de alta capacidade de amadurecimento, para isso, avaliou-se o efeito da utilização de chips de carvalho francês de média tostagem na composição físico-química e colorimétrica de vinho tinto ?Syrah? elaborado no VSSF. Foram testados dois tratamentos, um de controle (sem utilização de chip) e o outro utilizando chip de carvalho francês de média tostagem (6g.L-1). Os parâmetros avaliados foram: pH, acidez total e volátil, açúcares redutores, densidade, dióxido de enxofre livre e total, teor alcóolico, extrato seco, índice de polifenóis totais, intensidade de cor, tonalidade, e análise colorimétrica pelo sistema CIELAB. Os resultados mostraram que a utilização de chip de carvalho francês pode contribuir para maiores estabilidades microbiológica e da cor dos vinhos em razão do menor valor de pH encontrado. Evidenciou-se que a utilização de chip influenciou significativamente nos parâmetros inerentes à cor, obtendo-se maior índice de polifenóis totais no vinho com emprego do chip de carvalho francês.
650 $aPolyphenols
650 $aWine cultivars
650 $aWine quality
650 $aWines
650 $aCor
650 $aEnologia
650 $aVinho
653 $aFragmentos de carvalho
653 $aMédia tostagem
653 $aPolifenóis
653 $aSyrah
653 $aVale do São Francisco
653 $aVinho tropical
700 1 $aNOGUEIRA, E. T.
700 1 $aBARROS, A. P. A.
700 1 $aSANTOS, R. G. de B.
700 1 $aSILVA, L. F. da
700 1 $aBIASOTO, A. C. T.
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