Effects of Protein Level Sequence and Kind of Starter on Rate and Efficiency of Gain of Growing Swine, and on Carcass Characteristics

Meade, R. J.; Rust, J. W.; Miller, Kenneth P.; Hanke, Hans; Grant, R. S.; Vermedahl, L. D.; Wass, D. F.; Hanson, L. E.

doi:10.2527/jas1969.292303x

Cited by 14 publications

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“…In a series of triah (10,11) it was found that the inclusion of dried skimmilk or fishmeal in corn-soybean meal diets did not consistently improve liveweight $owth. Also, corn-soybean meal diets which contained between 18 and 2IVo protein appeared adequate as measured by rate of gain (9, (Table 2) and fed until a mean pen liveweight of 50 kg was attained.…”

Section: Introductionmentioning

confidence: 99%

Protein and Copper Supplementation of Corn-Soybean Meal Diets for Young Pigs

Young¹,

Jamieson²

1970

Can. J. Anim. Sci.

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Section: Introductionmentioning

confidence: 99%

Protein and Copper Supplementation of Corn-Soybean Meal Diets for Young Pigs

Young¹,

Jamieson²

1970

Can. J. Anim. Sci.

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“…Although the effect of weight at weaning on the subsequent growth of the piglet is well known (Meade et al 1969;Mahan et al 1998), the effect on the ultimate quality of the carcass and pork meat at market weight is less well understood. At weaning, the variation in weight between the heaviest and lightest pigs was associated with the gestational and lactational treatments, individually or in combination.…”

Section: Progeny Weaning Weightmentioning

confidence: 99%

“…However, the effects of weaning weight on carcass characteristics are equivocal. Meade et al (1969) and Powell and Aberle (1980) showed no effect of weaning weight on carcass characteristics, but Himmelberg et al (1985) observed a higher muscle content in pigs that were weaned at a greater weight.…”

mentioning

confidence: 96%

“…Protein-inadequate diets during lactation can also reduce the growth of the progeny resulting in lower weights at weaning (Mahan and Mangan 1975;King et al 1993;Pluske et al 1998). Such weight disadvantage at weaning is never overcome (Meade et al 1969;Himmelberg et al 1985;Mahan et al 1998).…”

mentioning

confidence: 99%

“…However, when protein restriction during gestation is severe [~9 g crude protein (CP) d -1 ], birth weight is also reduced (Pond et al 1968(Pond et al , 1992Schoknecht et al 1993). It has been hypothesized, assuming an adequate protein supply during lactation, that the delayed effect of restricted gestational protein intake on litter growth is mediated through (1) a reduction in milk yield resulting from inadequate protein reserves to allow maximum production of milk and/or from limited development of the mammary tissue during gestation and/or (2) damage to the fetuses in utero, thus impairing postnatal growth.…”

mentioning

confidence: 99%

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Gestational and lactational feeding strategies for gilts: Growth, carcass characteristics and meat quality of the progeny

Fortin¹,

Clowes²,

Schaefer³

2003

Can. J. Anim. Sci.

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. 2003. Gestational and lactational feeding strategies for gilts: Growth, carcass characteristics and meat quality of the progeny. Can. J. Anim. Sci. 83: 205-211. This study was conducted to determine whether feeding gilts (1) at or above their National Academy of Sciences-National Research Council (NAS-NRC 1998) requirements during gestation, and (2) to lose a moderate (~10%) or large (~17%) amount of maternal protein during lactation had a residual effect on their progeny's growth, carcass characteristics and pork quality at market weight. From each litter, the heaviest and lightest barrows and gilts were selected. The progeny of gilts fed above their requirements during gestation, and those that lost the least body protein during lactation were heavier at weaning; +0.3 kg (P < 0.05) and +0.5 kg (P ≤ 0.01), respectively. However, these liveweight differences, which were associated with the gestation and lactation effects, were no longer evident (P > 0.05) at day 35 or 85 post-weaning. But at slaughter, these animals had thinner (P < 0.01) fat thickness and higher (P < 0.05) predicted salable meat yield. Independently of the gestation and lactation treatments, and compared to the low-weaning-weight pigs, the high-weaning-weight pigs maintained their weight advantage (P < 0.01 at day 35 (+ 2.8 kg) and day 85 (+ 5.4 kg) post-weaning), took 4.5 fewer days (P < 0.01) to reach market weight, but had similar (P > 0.05) carcass characteristics and pork quality. Council (NAR-NRC 1998) pendant la gestation ou (2) conçu pour entraîner une diminution moyenne (~ 10 %) ou importante (~ 17 %) des protéines maternelles pendant la lactation avait un effet résiduel sur la croissance, les paramètres de la carcasse et la qualité de la viande des rejetons des truies nullipares, une fois atteint le poids de marché. Les auteurs ont sélectionné les truies nullipares et les castrats les plus lourds et les plus légers de chaque portée. Les rejetons des truies qui ont reçu plus que l'apport recommandé pendant la gestation et de celles qui avaient perdu le moins de protéines à la lactation étaient plus lourds au sevrage, soit avaient 0,3 kg (P < 0,05) ou 0,5 kg de plus (P ≤ 0,01), respectivement. L'écart de poids vif associé aux effets de la gestation et de la lactation avait néanmoins disparu (P > 0,05) 35 ou 85 jours après le sevrage. À l'abattage, les mêmes animaux présentaient cependant un gras dorsal plus mince (P < 0,01) et un rendement prévu en viande de salaison plus élevé (P <0,05). Comparativement aux sujets légers, les porcs plus lourds au sevrage gardaient encore leur avantage (P < 0,01) 35 jours (+2,8 kg) et 85 jours (+5,4 kg) après le sevrage, peu importe le traitement à la gestation et à la lactation. Il leur fallait aussi 4,5 jours de moins (P < 0,01) pour atteindre le poids de marché, mais les paramètres de la carcasses étaient similaires (P > 0,05), à l'instar de la qualité de la viande.

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Estudo de altos níveis de cobre orgânico e inorgânico como promotores de crescimento de leitões

Lima¹

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An experiment was conducted to evaluate high dietary leveis of organic and inorganic Cu, respectively, cupric citrate and copper sulfate, as growth promoters of weanling pigs fed complex diet. Eighty crossbred weanling pigs (40 castrated males and 40 females), averaging 6,85 kg initial weight and 21± 2 days of age, were assigned to 5 treatments in a randomized complete block design based on genetic group, sex and live weight. The treatments consisted in a basal diet of corn soybean meal, lactose, dried skim milk and spray dried porcine plasma meal ( control), or the basal diet containing 200 ppm of inorganic Cu (as Cu SO 4 .5H 2 O), or 50, 100 and 150 ppm of organic Cu (as C 6 H 4 Cu 2 O 7 ). The basal diet was supplemented with 2500 ppm of Zn (as ZnO) during the first 14 days of experimental period. Pigs were housed in 20 pens with 4 pigs (2 castrated males and 2 females) per pen (experimental unit)and 4 replications per treatment. Feed and water were given ad libitum to pigs during ali 28-day experimental period. Pigs were weighed individually and the d p. ta of feed intake/pen were X registered every week. Average daily garn, daily feed intake and feed conversion were not affected (P > 0,05) by high dietary leveis of copper. Therefore, high dietary leveis of organic, as cupric citrate, and inorganic, as copper sulfate, did not show any growth promoter effect on weanling pigs fed complex diet.

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Effects of Protein Level Sequence and Kind of Starter on Rate and Efficiency of Gain of Growing Swine, and on Carcass Characteristics

Cited by 14 publications

References 0 publications

Protein and Copper Supplementation of Corn-Soybean Meal Diets for Young Pigs

Protein and Copper Supplementation of Corn-Soybean Meal Diets for Young Pigs

Gestational and lactational feeding strategies for gilts: Growth, carcass characteristics and meat quality of the progeny

Estudo de altos níveis de cobre orgânico e inorgânico como promotores de crescimento de leitões

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