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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
07/03/2016 |
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Data da última atualização: |
07/03/2016 |
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Autoria: |
QUEIROZ, S. A.; THOLON, P.; RIBEIRO, A. C.; RESENDE, K. T.; RIBEIRO, S. D. |
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Título: |
Milk yield heritability, repetability and genetic trends in Saanen goats in Brazil. |
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Ano de publicação: |
2000 |
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Fonte/Imprenta: |
In: INTERNATIONAL CONFERENCE ON GOATS, 7., 2000, Tours, Poitiers, France. Proceedings... Paris: INRA: IGA: Institut de Elevage, 2000. v. 1, p. 241. |
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ISBN: |
2841480380 |
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Idioma: |
Francês |
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Conteúdo: |
Abstract: The aim of study was to estimate the genetic and phenotypic parameters and the evaluate the genetic trend of milk yield of parameters by using 417 Saanen goats from herds enrolled in PROCAPRI program. The variance component estimates were obtained by the Restricted Maximum Likelihood method, using an animal model. Heritability and repeatability estimates were 0.38. The results indicated that selection could be used to improve my and repeated measures of my are needed before deciding whether to cull a goat. |
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Palavras-Chave: |
Genetic parameters. |
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Thesagro: |
Cabra; Caprino; Melhoramento genético animal; Parâmetro genético; Produção leiteira. |
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Thesaurus Nal: |
Brazil; Genetic improvement; Goats; Heritability; Milk yield; repeatability; Saanen. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 01514naa a2200337 a 4500
001 2039942
005 2016-03-07
008 2000 bl uuuu u00u1 u #d
020 $a2841480380
100 1 $aQUEIROZ, S. A.
245 $aMilk yield heritability, repetability and genetic trends in Saanen goats in Brazil.
260 $c2000
520 $aAbstract: The aim of study was to estimate the genetic and phenotypic parameters and the evaluate the genetic trend of milk yield of parameters by using 417 Saanen goats from herds enrolled in PROCAPRI program. The variance component estimates were obtained by the Restricted Maximum Likelihood method, using an animal model. Heritability and repeatability estimates were 0.38. The results indicated that selection could be used to improve my and repeated measures of my are needed before deciding whether to cull a goat.
650 $aBrazil
650 $aGenetic improvement
650 $aGoats
650 $aHeritability
650 $aMilk yield
650 $arepeatability
650 $aSaanen
650 $aCabra
650 $aCaprino
650 $aMelhoramento genético animal
650 $aParâmetro genético
650 $aProdução leiteira
653 $aGenetic parameters
700 1 $aTHOLON, P.
700 1 $aRIBEIRO, A. C.
700 1 $aRESENDE, K. T.
700 1 $aRIBEIRO, S. D.
773 $tIn: INTERNATIONAL CONFERENCE ON GOATS, 7., 2000, Tours, Poitiers, France. Proceedings... Paris: INRA: IGA: Institut de Elevage, 2000.$gv. 1, p. 241.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
26/09/2022 |
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Data da última atualização: |
26/09/2022 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
FERNANDES, L. O.; PASCHOAL, J. J.; MACIEL, G. A.; BRAGA, G. J.; REIS, N. J. C.; PAIVA, M. I. de. |
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Afiliação: |
LEONARDO OLIVEIRA FERNANDES; JULIANA JORGE PASCHOAL; GIOVANA ALCANTARA MACIEL, CPAC; GUSTAVO JOSE BRAGA, CPAC; NÍNIVE JHORS CARNEIRO REIS; MARCIA INGRID DE PAIVA. |
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Título: |
Feed efficiency of Nellore young bull in the feedlot. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
In: REUNIÃO DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 57., 2022, Campinas. Tropical animal science and pratice to feed the planet: proceedings. Brasília, DF: SBZ; São Carlos, SP: Embrapa Pecuária Sudeste, 2022. |
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Páginas: |
p. 128 |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of the study was to evaluate feed efficiency of Nellore young bull in the feedlot using the evaluation of the residual feed intake (RFI). The experiment was carried out at the experimental farm Orestes Prata Tibery Júnior (ABCZ), located in Uberaba, MG, Brazil (lat. 19º 47' 68" S.; long. 47º 58' 50'' W, 788 m West). Nellore young bulls (n = 101), pure breed, with initial age of 17 months and mean live weight of 486 kg were housed in a feedlot containing electronic troughs and weighing scales. The experimental period lasted 98 days, with 28 of adaptation and 70 days of evaluation, from 03/17/2021 to 06/23/2021. The diet was formulated to provide 1.700 kg live weight/head/day and had a forage:concentrate ratio of 40:60, with 40% of corn silage and 60% of concentrate, containing 15.3% CP and 76.8% TDN on dry matter (DM) basis. The RFI was determined during the experimental period and the animals were separated in two experimental groups: positive and negative RFI. It was evaluated average daily gain (ADG), feed conversion (FC), daily dry matter intake (DMI) and gross feed efficiency (GFE). The experimental design was completely randomized and means were compared using Tukey test at 5% significance. In the evaluation of 101 young bulls, 56 had negative RFI and 45 had positive RFI, about 55.4% had lower DMI compared to estimated, which was considered the most efficient. The difference between the lowest and the highest individual intake followed was -1.87 kg (negative RFI) and 3.52 kg (positive RFI), with the difference of 5.39 kg of RFI, showing variability and chance of selection for more efficient and lower cost young bulls. It was observed effect of youn bull RFI group on DMI - 13.59 and 12.05 kg/day, and 2.51 and 2.24% LW, respectively for positive and negative RFI. There was a reduction of 11.3% in DMI during the experimental period. Feed conversion (6.28 and 6.93 kg of DM/kg ADG for negative and positive RFI) and GFE (0.16 and 0.15 kg ADG/kg DMI for negative and positive RFI) were influenced by RFI group. There was no effect (P>0.05) of RFI group on ADG - 1.95 (negative RFI) and 1.98 kg/head/day (positive RFI). Young bulls presenting negative RFI had lower intake with the same ADG, enabling better-feed conversion in the finishing phase, which directly affects the reduction of feed and production costs. MenosThe objective of the study was to evaluate feed efficiency of Nellore young bull in the feedlot using the evaluation of the residual feed intake (RFI). The experiment was carried out at the experimental farm Orestes Prata Tibery Júnior (ABCZ), located in Uberaba, MG, Brazil (lat. 19º 47' 68" S.; long. 47º 58' 50'' W, 788 m West). Nellore young bulls (n = 101), pure breed, with initial age of 17 months and mean live weight of 486 kg were housed in a feedlot containing electronic troughs and weighing scales. The experimental period lasted 98 days, with 28 of adaptation and 70 days of evaluation, from 03/17/2021 to 06/23/2021. The diet was formulated to provide 1.700 kg live weight/head/day and had a forage:concentrate ratio of 40:60, with 40% of corn silage and 60% of concentrate, containing 15.3% CP and 76.8% TDN on dry matter (DM) basis. The RFI was determined during the experimental period and the animals were separated in two experimental groups: positive and negative RFI. It was evaluated average daily gain (ADG), feed conversion (FC), daily dry matter intake (DMI) and gross feed efficiency (GFE). The experimental design was completely randomized and means were compared using Tukey test at 5% significance. In the evaluation of 101 young bulls, 56 had negative RFI and 45 had positive RFI, about 55.4% had lower DMI compared to estimated, which was considered the most efficient. The difference between the lowest and the highest individual intake followed was -1.87 kg (negati... Mostrar Tudo |
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Thesagro: |
Ganho de Peso. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1146825/1/Giovana-Maciel-Feed-efficiency-of-Nellore.pdf
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Marc: |
LEADER 03062nam a2200193 a 4500
001 2146825
005 2022-09-26
008 2022 bl uuuu u00u1 u #d
100 1 $aFERNANDES, L. O.
245 $aFeed efficiency of Nellore young bull in the feedlot.$h[electronic resource]
260 $aIn: REUNIÃO DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 57., 2022, Campinas. Tropical animal science and pratice to feed the planet: proceedings. Brasília, DF: SBZ; São Carlos, SP: Embrapa Pecuária Sudeste$c2022
300 $ap. 128
520 $aThe objective of the study was to evaluate feed efficiency of Nellore young bull in the feedlot using the evaluation of the residual feed intake (RFI). The experiment was carried out at the experimental farm Orestes Prata Tibery Júnior (ABCZ), located in Uberaba, MG, Brazil (lat. 19º 47' 68" S.; long. 47º 58' 50'' W, 788 m West). Nellore young bulls (n = 101), pure breed, with initial age of 17 months and mean live weight of 486 kg were housed in a feedlot containing electronic troughs and weighing scales. The experimental period lasted 98 days, with 28 of adaptation and 70 days of evaluation, from 03/17/2021 to 06/23/2021. The diet was formulated to provide 1.700 kg live weight/head/day and had a forage:concentrate ratio of 40:60, with 40% of corn silage and 60% of concentrate, containing 15.3% CP and 76.8% TDN on dry matter (DM) basis. The RFI was determined during the experimental period and the animals were separated in two experimental groups: positive and negative RFI. It was evaluated average daily gain (ADG), feed conversion (FC), daily dry matter intake (DMI) and gross feed efficiency (GFE). The experimental design was completely randomized and means were compared using Tukey test at 5% significance. In the evaluation of 101 young bulls, 56 had negative RFI and 45 had positive RFI, about 55.4% had lower DMI compared to estimated, which was considered the most efficient. The difference between the lowest and the highest individual intake followed was -1.87 kg (negative RFI) and 3.52 kg (positive RFI), with the difference of 5.39 kg of RFI, showing variability and chance of selection for more efficient and lower cost young bulls. It was observed effect of youn bull RFI group on DMI - 13.59 and 12.05 kg/day, and 2.51 and 2.24% LW, respectively for positive and negative RFI. There was a reduction of 11.3% in DMI during the experimental period. Feed conversion (6.28 and 6.93 kg of DM/kg ADG for negative and positive RFI) and GFE (0.16 and 0.15 kg ADG/kg DMI for negative and positive RFI) were influenced by RFI group. There was no effect (P>0.05) of RFI group on ADG - 1.95 (negative RFI) and 1.98 kg/head/day (positive RFI). Young bulls presenting negative RFI had lower intake with the same ADG, enabling better-feed conversion in the finishing phase, which directly affects the reduction of feed and production costs.
650 $aGanho de Peso
700 1 $aPASCHOAL, J. J.
700 1 $aMACIEL, G. A.
700 1 $aBRAGA, G. J.
700 1 $aREIS, N. J. C.
700 1 $aPAIVA, M. I. de
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Embrapa Cerrados (CPAC) |
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