Teor de metionina + cistina total para codornas de corte do grupo genético EV2 durante o período de crescimento

Ferreira, Fabiana Vargas; Corrêa, G.S.S.; Corrêa, Angelita Duarte; Silva, M.A.; Felipe, V.P.S.; Freitas, L.S.; Wenceslau, Raphael Rocha; Lima, Cristina Amorim Ribeiro de; Santos, G.G.; Godinho, Rodrigo Mezêncio; Caramori, João Garcia; Vasconcellos, Cídia

doi:10.1590/s0102-09352012000300019

Cited by 3 publications

(1 citation statement)

References 5 publications

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“…This estimate is similar to the dietary methionine + cysteine:lysine ratio reported by SCHERER (2009), who reported 0.78 for meat-type quails from 1 to 14 days of age. However, the greatest BWG was estimated for quails fed 0.95% methionine + cysteine diet, being 0.73 methionine + cysteine: lysine ratio for European quail at 35 days of age (FERREIRA et al, 2012b).…”

Section: Experimental Periodmentioning

confidence: 95%

Digestible methionine + cysteine: lysine ratios for growing meat-type quails

et al. 2018

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The objective was to estimate the most appropriate digestible methionine + cysteine:lysine ratios for growing meat-type quails (Coturnix coturnix) from 1 to 21 days of age. Quails were fed with a basal ration deficient in digestible methionine + cysteine, with five levels of DL-methionine, in substitution of glutamic acid and starch, resulting in digestible methionine + cysteine:lysine ratios of 0.61, 0.66, 0.71, 0.76 and 0.81. Feed and methionine + cysteine intake, body weight gain, feed conversion and uniformity were assessed. From 1 to 7 days, an increasing linear effect was observed for feed and methionine + cysteine intake, body weight gain, and uniformity, and a linear decrease for feed conversion. From 8 to 14 days, the 0.70 methionine + cysteine: lysine ratio was the best for feed intake and body weight gain, and for uniformity, the 0.75 methionine + cysteine:lysine ratio was the most appropriate. For methionine + cysteine intake and feed conversion, an increasing and decreasing linear adjustment was observed, respectively. From 15 to 21 days, an increasing linear effect was observed for feed and methionine + cysteine intake and body weight gain; a decreasing linear effect was observed for feed conversion. The 0.81 ratio was the most efficient for feed conversion during all evaluated experimental periods. In conclusion, the 0.81 dietary methionine + cysteine:lysine ratio is the most appropriate for meat-type quails during the first 21 days of age.

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Section: Experimental Periodmentioning

confidence: 95%

Digestible methionine + cysteine: lysine ratios for growing meat-type quails

et al. 2018

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Carcass traits and meat quality of quails from both sexes and eight distinct strains

et al. 2017

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Our objective was to evaluate carcass traits and meat quality of quails from different strains and both sexes pertaining to three breeding-improvement programs. Quails from seven meat-type strains (UFV1, UFV2, UFV3, EV1, EV2, LF1 and LF2) and from one egg-laying (Japanese quail) strain (LAY) were slaughtered at 35 days of age. A completely randomised 8 (strain) × 2 (sex) factorial design was used for data analysis. Bodyweight, hot carcass weight and breast (musculus pectoralis major and m. pectoralis minor) and legs (thigh and drumstick) weights and their respective yields were determined. Ultimate pH, colour measurements, water-holding capacity, cooking loss and shear force were assessed. No difference in ultimate pH, shear force and hue was observed. The UFV3 strain had the greatest bodyweight at slaughter. The UFV3 strain had the greatest hot carcass weight in both sexes. The heaviest breasts were observed in both sexes of the UFV3 strain and in males of the UFV2 strain. The UFV3 quails had greater leg weight. The hot carcass yields of meat-type strains were greater than that of the LAY strain. The UFV3 and LAY females furnished a greater breast yield than did male quails. For males, the UFV1 strain had a greater yield of breast than that of LAY quails. The LAY quails presented the greatest yields of leg. The LAY quails had the least luminance, and the greatest water-holding capacity, cooking loss, red and yellow intensity, and chroma. In summary, meat obtained from meat-type strains had a greater water-holding capacity, lower cooking loss and greater luminance than that of the LAY strain. In addition, the meat-type strains grew appreciably faster, but the difference in yields of breast and leg meat between meat and layer strains was small. We conclude that meat-type strains, especially the UFV3, are more appropriate for enterprises focussed on meat production.

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