Relationship between Yield and Composition of Sows' Milk and Weight Gains of Nursing Pigs

Lewis, A. J.; Speer, V. C.; Haught, Dorrance Galen

doi:10.2527/jas1978.473634x

Cited by 96 publications

(60 citation statements)

References 8 publications

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“…The milk yield of each sow was determined on d 12 and 19 by weighing the pigs at hourly intervals before and after nursing. The procedures used were those described by Lewis et al (1978). The length of time for assessment of milk yield was based on the report by Mahan et al (1971).…”

Section: Methodsmentioning

confidence: 99%

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Effect of Tallow and Choline Chloride Addition to the Diet of Sows on Milk Composition, Milk Yield and Preweaning Pig Performance2

Boyd

Moser

Peo

et al. 1982

Journal of Animal Science

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SummaryFour trials were conducted with a total of 188 crossbred sows to determine the effect of feeding diets supplemented with tallow (0 or 8%) and choline chloride (220 or 770 mg/kg diet) prior to parturition and during lactation on preweaning pig performance. On d 100 of gestation, sows were allotted to four factorially arranged dietary treatments: 0% tallow-220 mg/kg choline chloride, 0% tallow-770 mg/kg choline chloride, 8% tallow-220 mg/kg choline chloride, 8% tallow-770 mg/kg choline chloride. Diets without tallow were fed at the rate of 1.82 kg/d with an additional .18 kg/d of cornstarch, whereas sows receiving diets supplemented with tallow were fed 1.82 kg/d. Daily metabolizable energy intake was constant for all diets (approximately 6,240 kcal). Following parturition, the diets were fed ad libiturn for a 21-d lactation period. Pig survival to 21 d, in relation to the number of pigs born alive/litter, did not differ significantly between litters from sows receiving tallow (94.0%) and litters from sows receiving the control diet (92.5%). Although not significantly different, there was a trend toward slightly heavier pigs (6.35 vs 6.11 kg) and litters (53.97 vs 51.94 kg) after the 21-d lactation period in the groups nursing sows receiving tallow-supplemented diets. Litter performance was not improved by

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Section: Methodsmentioning

confidence: 99%

“…During the early postnatal phase of growth and development, young pigs are largely dependent upon their dams for nourishment. Therefore, milk yield and milk composition are associated with the rate of growth and development of the young pig (Fahmy, 1972;Lewis et al, 1978). (Lewis and Speer, 1973).…”

Section: R~ults and Discuuionmentioning

confidence: 99%

Effect of Tallow and Choline Chloride Addition to the Diet of Sows on Milk Composition, Milk Yield and Preweaning Pig Performance2

Boyd

Moser

Peo

et al. 1982

Journal of Animal Science

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“…Resultados semelhantes foram observados por Lewis et al (1978), Noblet & Etienne (1989), Barb et al (1993), De Bragança et al (1998, Noblet & Etienne (1998), Renaudeau et al (2003) e Moreira (2003), que também constataram que a melhoria na condição ambiental de porcas lactantes resulta em aumento do ganho de peso de leitões. Recentemente, Wagenberg et al (2006), em estudo para avaliar o efeito do resfriamento do piso sobre o desempenho de porcas lactantes, também verificaram que os leitões provenientes de porcas mantidas sobre piso com resfriamento recebendo ração à vontade cresceram 22 g/dia a mais que os leitões das porcas mantidas em piso sem resfriamento.…”

Section: Resultsunclassified

Resfriamento do piso da maternidade para porcas em lactação no verão

et al. 2011

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RESUMO -Avaliou-se o efeito do resfriamento do piso da gaiola de maternidade no desempenho produtivo de porcas em lactação no período de verão. Utilizaram-se 42 porcas entre o 1 o e o 5 o partos, distribuídas em delineamento experimental de blocos ao acaso com 3 tratamentos e 14 repetições, considerando cada porca uma unidade experimental. Os tratamentos foram assim constituídos: piso sem resfriamento e consumo à vontade; piso com resfriamento e consumo de 5,5 kg/dia; piso com resfriamento e consumo à vontade. Os animais mantidos em gaiola com piso com resfriamento e que receberam ração à vontade apresentaram maior consumo de ração, de energia metabolizável e de lisina digestível. A mobilização de reservas corporais foi maior nas porcas mantidas sobre o piso com resfriamento com alimentação restrita, as quais apresentaram também maior intervalo desmame-estro. Os leitões das porcas mantidas sobre o piso com resfriamento tiveram maior peso ao desmame e ganho de peso diário. As porcas lactantes mantidas no piso com resfriamento apresentaram menor frequência respiratória, temperatura retal e temperaturas superficiais da nuca, do pernil e do peito. O resfriamento do piso da gaiola de maternidade favorece a dissipação de calor corporal, melhorando a condição térmica, a capacidade de consumo e o desempenho produtivo de porcas em lactação durante o verão.Palavras-chave: bioclimatologia, desempenho, matrizes, produção animal, suinocultura Floor cooling in farrowing room for lactating sows in the summer ABSTRACT -The effect of cooling the forrowing cage floor on production performance of lactation sows in the summer was evaluated. Forty-two sows from to the 1 st to the 5 th parturition were allotted to a completely randomized block experimental design with three treatments and 14 repetitions, considering each animal an experimental unit. The treatments were the following: floor not cooled and free intake; floor cooled and 5.5 kg/day of intake; floor cooled and free intake. The sows maintained in cage with cooled floor and fed ad libitum showed greater feed intake, metabolizable energy and digestible lysine. Mobilization of body reserves were greater in sows kept on the cooled floor and receiving restricted food, and they also presented longer interval between weaning and estrus. Piglets of sows kept on cooled floor showed greater weight at weaning and daily weight gain. Lactating sows kept on the cooled floor presented lower values for respiratory frequency, rectal temperature and superficial temperatures of nape, ham and breast. Cooling the farrowing cage floor favors the dissipation of body heat, improving thermal condition, the capacity of feed intake and the productive performance of lactating sows in the summer.Key Words: animal production, bioclimatology, lactating sow, performance, pig breeding Revista Brasileira de Zootecnia IntroduçãoA produção animal brasileira tem crescido significativamente nos últimos anos e, neste segmento, a suinocultura destaca-se pelo aumento do número de animais produzidos e comercializ...

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“…On the other hand, litter sizes born and raised by F, dams were large but again there was no evidence of a n effect of a-lactalbumin genotype on pre-weaning performance of these animals. The use of pre-weaning weight gains is a cost-effective method of estimating the sows milk yield, however, it has been shown to be subject to large inaccuracies (Lewis et al, 1978). Thus, the lack of an association between the a-lactalbumin gene and pre-weaning piglet growth traits may reflect the limitation of the measurements used rather than the lack of an effect of the gene on milk production.…”

Section: Growth and Carcassmentioning

confidence: 98%

“…If this gene has .87 (kg/day) (ADG1) a similar effect on inilk yield in the pig, then the result should have been higher piglet weaning weights. Lewis et al (1978) showed that variation in milk yield accounted for the largest amount of variation in piglet weight preweaning with a R2 value of .34. Also, White et al…”

Section: Growth and Carcassmentioning

confidence: 99%

Association of the Porcine α-Lactalbumin Gene to Growth, Carcass, Meat Quality and Reproductive Traits

Miller

Bleck

Wang

et al. 2000

Journal of Applied Animal Research

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Relationship between Yield and Composition of Sows' Milk and Weight Gains of Nursing Pigs

Cited by 96 publications

References 8 publications

Effect of Tallow and Choline Chloride Addition to the Diet of Sows on Milk Composition, Milk Yield and Preweaning Pig Performance2

Effect of Tallow and Choline Chloride Addition to the Diet of Sows on Milk Composition, Milk Yield and Preweaning Pig Performance2

Resfriamento do piso da maternidade para porcas em lactação no verão

Association of the Porcine α-Lactalbumin Gene to Growth, Carcass, Meat Quality and Reproductive Traits

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